User Manual
WFM 601A, WFM 601E & WFM 601M
Serial Digital Component Waveform Monitors
071-0103-01
This document supports firmware version 1.00
and above.
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WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for
a period of three (3) years from the date of shipment. If a product proves defective during this warranty period, Tektronix, at
its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in
exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging
and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix
shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix
service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges
for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance
and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts
by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from
improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of
non-Tektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of
such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR
IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO
REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO
THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE
OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
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Service Assurance
If you have not already purchased Service Assurance for this product, you may do so at any time during the product’s
warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs.
Repair Protection extends priority repair services beyond the product’s warranty period; you may purchase up to three years
of Repair Protection.
Calibration Services provide annual calibration of your product, standards compliance and required audit documentation,
recall assurance, and reminder notification of scheduled calibration. Coverage begins upon registration; you may purchase up
to five years of Calibration Services.
Service Assurance Advantages
H Priced well below the cost of a single repair or calibration
H Avoid delays for service by eliminating the need for separate purchase authorizations from your company
H Eliminates unexpected service expenses
For Information and Ordering
For more information or to order Service Assurance, contact your Tektronix representative and provide the information
below. Service Assurance may not be available in locations outside the United States of America.
Name
VISA or Master Card number and expiration
date or purchase order number
Repair Protection (1,2, or 3 years)
Calibration Services (1,2,3,4, or 5 years)
Instrument model and serial number
Instrument purchase date
Company
Address
City, State, Postal code
Country
Phone
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Table of Contents
General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix
xi
Getting Started
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–1
1–1
1–2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Included Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Waveform Monitor in a Serial Video System . . . . . . . . . . . . . . . .
1–5
1–5
1–5
1–11
1–12
Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial Equipment Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–15
1–15
1–16
1–17
Operating Basics
Reference
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1
2–1
2–5
2–6
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Display (WFM 601A Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bowtie Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital List (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Waveform (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Eye Display (WFM 601E and WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . .
Filter Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gamut Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graticule Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jitter Measurement Display (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . .
Line Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiple Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parade Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Picture Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ref Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1
3–1
3–5
3–7
3–8
3–12
3–13
3–14
3–16
3–19
3–27
3–28
3–29
3–34
3–37
3–39
3–41
3–41
3–42
3–43
3–44
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Table of Contents
Serial Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vector Display Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Waveform Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–44
3–52
3–53
3–58
3–58
Appendices
Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A–1
Appendix B: Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS–232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B–1
B–1
B–1
Appendix C: Remote Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–1
Cable Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SLM:CABle <B8281 | B1694 | B1505> (WFM 601E and WFM 601M Only) .
SLM:SOURCE? (WFM 601E and WFM 601M Only) . . . . . . . . . . . . . . . . . . . .
SLM:RCVR? (WFM 601E and WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . .
SLM:LEVEL? (WFM 601E and WFM 601M Only) . . . . . . . . . . . . . . . . . . . . .
SLM:LENGTH? (WFM 601E and WFM 601M Only) . . . . . . . . . . . . . . . . . . . .
C–3
C–3
C–4
C–4
C–5
C–5
Configuration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFErence: MODE <INT | EXT> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ARROWhead:LIMIT:PAL <MV_700 | MV_950> . . . . . . . . . . . . . . . . . . . . . . .
ARROWhead:LIMIT:NTSC <IRE_100 | IRE_110 | IRE_120 | IRE_131> . . . .
ARROWhead:FORMat <NTSC | PAL | AUTO> . . . . . . . . . . . . . . . . . . . . . . . .
GAMut:GRATicule <ARROWhead | DIAmond> . . . . . . . . . . . . . . . . . . . . . . .
GAMut:ALarm:TRIGger <NONE | CMPST | RGB | BOTH> . . . . . . . . . . . . . .
GAMut:ALarm:DISPlay <SCRN | PICT | BOTH> . . . . . . . . . . . . . . . . . . . . . .
STANDard <LINES_525 | LINES_625 | AUTO> . . . . . . . . . . . . . . . . . . . . . . .
VECtor:BARS <B100 | B75> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VECtor:GRATicule <LTNG | VECtor> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERial:MENU <STATUS | FORM | CABLE> . . . . . . . . . . . . . . . . . . . . . . . . . .
SERial:DISPlay <RGB | YPbPr> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERial:MONitor <GBR | YPbPr> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERial:EAVSAV <PASS | STRIP> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERial:ALarm:<error type> <alarm setting> . . . . . . . . . . . . . . . . . . . . . . . . . . .
UIMENU:<command> <options> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–6
C–6
C–7
C–7
C–8
C–8
C–9
C–9
C–10
C–10
C–11
C–11
C–12
C–12
C–13
C–13
C–14
Cursor Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–16
CURsor:SELect <VOLT | TIME | VOLT_TIME | MARK | NONE> . . . . . . . . .
CURsor:CONTROL <VOLT | TIME> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MC:<ONE | TWO | THREE> <marker position> . . . . . . . . . . . . . . . . . . . . . . .
<VC | TC>:<ONE | TWO> <voltage level | timing range> . . . . . . . . . . . . . . . .
<TC | VC>:TRACK <ON | OFF> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–16
C–17
C–17
C–18
C–19
Digital Waveform and Digital List Commands . . . . . . . . . . . . . . . . . . C–20
DGTL? (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGTL:REGion? (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGTL:DATA? (WFM 601M Only)
DGTL:DATA:V#? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGTL:VDATA? (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGTL:VIDmode <VIDEO | DATA> (WFM 601M Only) . . . . . . . . . . . . . . . . .
DGTL:FReeze <ON | OFF> (WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . .
DGTL:BASE <HEX | DECIMAL | BINARY> (WFM 601M Only) . . . . . . . . .
C–20
C–21
C–21
C–22
C–23
C–23
C–24
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Table of Contents
Display Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–25
DISPlay:SINGLE <display mode> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:INTENSITY:<display mode>:<line select mode> <intensity> . . . . . .
DISPlay:INTENSITY:READ <intensity> . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:INTENSITY:AUDIO <intensity> (WFM 601A Only) . . . . . . . . . . . .
DISPlay:PIXC <contrast range> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:PIXB <blackness range> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:TRACEROT <tracerotate> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:SCALEillum <scale> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPlay:FOCUS:<line select mode> <range> . . . . . . . . . . . . . . . . . . . . . . . . . .
C–25
C–26
C–27
C–28
C–28
C–28
C–29
C–29
C–30
Error Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–31
ESR? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALLEV? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–31
C–31
Eye Pattern Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–33
EYe:DISPlay < FLAT | EQEYE> (WFM 601M Only) . . . . . . . . . . . . . . . . . . . .
EYe:MODE <OVERLAY | EYE10> (WFM 601E and WFM 601M Only) . . . .
EYe:CLOckhpf <E10HZ | E100HZ | E1000HZ> (WFM 601E and
C–33
C–33
WFM 601M Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–34
Gain Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–35
GAIN:AUDIO <DBU0 | DBU4 | DBU8 | DBU12> (WFM 601A Only) . . . . .
GAIN:W_V_STATE <x1 | x5 | x10> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAIN:<WFM | VEC>:VAR:STATE <ON | OFF> . . . . . . . . . . . . . . . . . . . . . . .
GAIN:<WFM | VEC>:VAR:VALUE <gain> . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAIN:LTNG:VAR:<VERT | HORZ>:STATE <ON | OFF> . . . . . . . . . . . . . . . .
GAIN:LTNG:VAR:<VERT | HORZ>:VALUE <gain> . . . . . . . . . . . . . . . . . . .
C–35
C–35
C–36
C–36
C–37
C–37
Input Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–38
INput:SOUrce <SERIALA | SERIALB> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INput:CHANnel <CH1 | CH2 | CH3> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INput:PBPROFFSet <MV_0 | MV_350> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–38
C–39
C–39
Jitter Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–40
JITter:HPFILter <J10HZ | J1000HZ | J10KHZ | J100KHZ> (WFM 601M Only)
JITter:UNITS <SEC | UI | OFF> (WFM 601M Only) . . . . . . . . . . . . . . . . . . . .
JITter:<ALIGNMENT | TIMING >? (WFM 601M Only) . . . . . . . . . . . . . . . . .
C–40
C–40
C–41
Line Select Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–42
LINESelect:<command> <options> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–42
Position Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–44
POSition:VERTical:<display mode> <range>
POSition:HORZ:<display mode> <range> . . . . . . . . . . . . . . . . . . . . . . . . .
C–44
Preset Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–46
PREset:REcall <PRESETn | FACTORY > . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREset:STORE <PRESETn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREset:NAMES:<PRESETn> “any string” . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–46
C–46
C–47
Sweep Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–48
SWEEP:TIMING <ONEL | TWOL | ONEF | TWOF> . . . . . . . . . . . . . . . . . . .
SWEEP:TIMING <ONEL | ONEF> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWEEP:MAG <OFF | ON> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–48
C–49
C–49
System Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–50
MENU <FILTer | CURsor | LINESelect | CONFIG | GAIN | CRT | CLear |
SERial> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–50
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Table of Contents
FILTer <FLAT | DIFF | LP> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AFC <ON | OFF> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PORT:ECHO <ON | OFF> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROTEST <ON | OFF> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNID? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALSignal:ENable <OFF | ON> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C–51
C–51
C–52
C–52
C–53
C–53
Remote Command Processing Code . . . . . . . . . . . . . . . . . . . . . . . . . . . C–55
Appendix D: User Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning or Replacing the Fan Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graticule Light Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the CRT Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D–1
D–1
D–1
D–2
D–3
D–3
Glossary
Index
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List of Figures
Figure 1–1: Dimensions of the 1700F00 plain cabinet . . . . . . . . . . . . .
1–6
1–7
Figure 1–2: 1700F02 portable cabinet . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–3: Rear view of the waveform monitor in a 1700F02 cabinet
Figure 1–4: The 1700F05 rack cabinet holds two instruments . . . . . .
Figure 1–5: 1700F05 cabinet showing utility drawer and blank panel
Figure 1–6: Monitoring the video bit stream of a serial receiver . . . .
1–8
1–9
1–10
1–12
Figure 1–7: Monitoring serial digital signals around
a routing switcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–13
1–14
Figure 1–8: Eye Pattern display of a termination with good
return loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–9: Eye Pattern display of a termination with poor
return loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–14
1–16
1–18
1–19
1–20
1–21
1–22
1–22
1–23
1–24
1–25
1–26
1–26
2–1
Figure 1–10: Initial equipment connections . . . . . . . . . . . . . . . . . . . . .
Figure 1–11: Initial display in the Waveform display mode . . . . . . . .
Figure 1–12: Channel 1 of Color bar with CRT adjustments visible .
Figure 1–13: Eye Pattern display mode . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–14: Jitter display mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–15: Vector display for 100% Color bar signal . . . . . . . . . . .
Figure 1–16: Lightning display for 100% Color bar signal . . . . . . . .
Figure 1–17: Arrowhead gamut display . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–18: Diamond gamut display . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–19: Video digital waveform . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–20: Data digital waveform . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–21: Typical Audio display with small phase error . . . . . . . .
Figure 2–1: WFM 601M front panel . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: WFM 601A and WFM 601E front panels . . . . . . . . . . . .
Figure 2–3: Elements of the waveform monitor menu controls . . . . .
Figure 2–4: Rear panel of the waveform monitor . . . . . . . . . . . . . . . .
Figure 3–1: A signal from one channel only . . . . . . . . . . . . . . . . . . . . .
Figure 3–2: X and Y signal in phase with equal amplitudes . . . . . . . .
Figure 3–3: Signals out of phase with equal amplitudes . . . . . . . . . . .
Figure 3–4: Signals out of phase with unequal amplitudes . . . . . . . . .
Figure 3–5: Signals with reverse polarity and equal amplitudes . . . .
2–2
2–5
2–6
3–1
3–2
3–2
3–3
3–3
Figure 3–6: Signals with a phase error of 90 degrees and
equal amplitudes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3
3–4
Figure 3–7: Typical Audio display pattern with small phase error . .
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Figure 3–8: Typical Bowtie display on the waveform monitor . . . . . .
Figure 3–9: Bowtie waveform showing a timing error in CH 3 . . . . .
Figure 3–10: Bowtie waveform showing gain error in CH 3 . . . . . . . .
3–5
3–6
3–6
Figure 3–11: Configure menu for WFM/VEC showing
the selection knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–8
3–9
Figure 3–12: Map of functions available in the Configure menu . . . .
Figure 3–13: Example of the Digital List display . . . . . . . . . . . . . . . . .
Figure 3–14: Data List display mode in the Video mode . . . . . . . . . . .
Figure 3–15: Digital Waveform display in the VIDEO mode . . . . . . .
Figure 3–16: Digital Waveform display in DATA mode . . . . . . . . . . .
3–14
3–15
3–16
3–17
Figure 3–17: Digital Waveform display showing X5 gain on CH 1 (Y)
waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–18
3–20
3–21
3–22
Figure 3–18: Overlay Eye display . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–19: 10-EYE triggered display . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–20: Connections for measuring a serial source . . . . . . . . . . .
Figure 3–21: Timing Cursors alignment for measuring 20–80%
rise time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–24
3–29
3–30
3–31
3–34
3–35
3–37
Figure 3–22: Construction of the Diamond display . . . . . . . . . . . . . . .
Figure 3–23: Out-of-gamut signals on a Diamond display . . . . . . . . .
Figure 3–24: NTSC and PAL Arrowhead gamut displays . . . . . . . . .
Figure 3–25: Waveform measurement graticule . . . . . . . . . . . . . . . . .
Figure 3–26: Graticule for K-factor measurements . . . . . . . . . . . . . . .
Figure 3–27: Example of the Jitter display . . . . . . . . . . . . . . . . . . . . . .
Figure 3–28: Parade display of YPbPr shown in Line Select mode
(15H only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–40
3–41
3–42
3–45
3–47
3–48
3–49
3–50
3–53
3–54
3–55
3–56
B–1
Figure 3–29: Parade display of Y and Pb signals . . . . . . . . . . . . . . . . .
Figure 3–30: Example of the Picture display . . . . . . . . . . . . . . . . . . . .
Figure 3–31: Serial STATUS display for firmware V2.X . . . . . . . . . .
Figure 3–32: Serial STATUS display for firmware V1.X . . . . . . . . . .
Figure 3–33: Serial format display showing the FORMAT screen . . .
Figure 3–34: Serial format display showing the Cable screen . . . . . .
Figure 3–35: Connection for point-to-point error measurements . . .
Figure 3–36: Vector display relationship of the Pr and Pb signals . . .
Figure 3–37: Vector display graticule . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–38: Construction of the Lightning display . . . . . . . . . . . . . .
Figure 3–39: Lightning graticule showing interchannel timing errors
Figure B–1: Pin assignments for the RS-232 connector . . . . . . . . . . .
Figure B–2: Pin assignments for the REMOTE connector . . . . . . . .
Figure D–1: Graticule light bulb replacement . . . . . . . . . . . . . . . . . . .
B–2
D–2
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Table of Contents
List of Tables
Table 3–1: List of measured and actual rise times for the
waveform monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–1: Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–2: CRT display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–3: AC power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–4: Environmental characteristics . . . . . . . . . . . . . . . . . . . . . .
Table A–5: Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–25
A–1
A–8
A–9
A–9
A–9
Table A–6: Safety standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–10
Table A–7: Safety certification compliance . . . . . . . . . . . . . . . . . . . . . A–10
Table A–8: Certifications and compliances . . . . . . . . . . . . . . . . . . . . . A–11
Table B–1: Remote connector pin assignments and functions . . . . . .
Table C–1: Symbols used in this section . . . . . . . . . . . . . . . . . . . . . . . .
B–2
C–1
Table C–2: SERial:ALarm: commands and options . . . . . . . . . . . . . . C–14
Table C–3: UIMENU: commands and options . . . . . . . . . . . . . . . . . . C–15
Table C–4: Voltage and Timing Cursor positioning commands
and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–18
Table C–5: Voltage and Timing Cursor tracking commands and
options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–19
Table C–6: DISPLay:SINGLE commands . . . . . . . . . . . . . . . . . . . . . . C–25
Table C–7: DISPlay:INTENSITY command options . . . . . . . . . . . . . C–27
Table C–8: DISPLay:FOCUS command options . . . . . . . . . . . . . . . . C–30
Table C–9: Typical ALLEV? responses to detected system errors. . . C–32
Table C–10: LINESelect: commands and options . . . . . . . . . . . . . . . . C–42
Table C–11: POSition:VERTical commands and options . . . . . . . . . C–45
Table C–12: POSition:HORZ commands and options . . . . . . . . . . . . C–45
Table C–13: FILTer command options . . . . . . . . . . . . . . . . . . . . . . . . . C–51
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Table of Contents
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General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
To avoid potential hazards, use this product only as specified.
Injury Precautions
Use Proper Power Cord. To avoid fire hazard, use only the power cord specified
for this product.
Avoid Electric Overload. To avoid electric shock or fire hazard, do not apply a
voltage to a terminal that is outside the range specified for that terminal.
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Do Not Operate Without Covers. To avoid electric shock or fire hazard, do not
operate this product with covers or panels removed.
Use Proper Fuse. To avoid fire hazard, use only the fuse type and rating specified
for this product.
Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not operate
this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere. To avoid injury or fire hazard, do not
operate this product in an explosive atmosphere.
Product Damage
Precautions
Use Proper Power Source. Do not operate this product from a power source that
applies more than the voltage specified.
Provide Proper Ventilation. To prevent product overheating, provide proper
ventilation.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
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General Safety Summary
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
DANGER
High Voltage
Protective Ground
(Earth) Terminal
ATTENTION
Refer to Manual
Double
Insulated
Certifications and
Compliances
Refer to the specifications section for a listing of certifications and compliances
that apply to this product.
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Preface
This manual describes the capabilities of the WFM 601A, WFM 601E, and
WFM 601M Serial Digital Component Waveform Monitors and their features
and specifications.
To get started, refer to the first section, Getting Started. This section shows you
how to install and configure the waveform monitor for use in your operating
environment. For detailed information about a feature, refer to the third section,
Reference.
About This Manual
This manual is composed of the following sections:
H
H
H
H
Getting Started provides a product description, installation instructions, and a
functional check procedure. Standard and optional accessories are also listed.
Operating Basics briefly describes the front panel controls and rear panel
connections.
Reference provides an alphabetized reference for all display modes and
configurable features of the waveform monitor.
Appendices provides additional information including the specifications,
remote control interfaces, and maintenance procedures.
Related Manuals
The following related document is also available.
H
The WFM 601A, WFM 601E, and WFM 601M Service Manual
(070–9836-XX) describes how to service the waveform monitors. This
optional manual may be ordered separately.
Complete and mail the Warranty Reply Card packaged with this manual to ensure
that you receive notifications of firmware or hardware upgrades.
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Preface
Contacting Tektronix
Product
Support
For application-oriented questions about a Tektronix measure-
ment product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time
Or contact us by e-mail:
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Service
Support
Contact your local Tektronix distributor or sales office. Or visit
our web site for a listing of worldwide service locations.
http://www.tek.com
In North America:
For other
information 1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
To write us Tektronix, Inc.
P.O. Box 1000
Wilsonville, OR 97070-1000
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Getting Started
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Getting Started
This section presents information you need to set up your waveform monitor and
to check that it is functional. This section contains the following information:
H
H
H
H
Product Description gives an overview of the product capabilities.
Accessories lists the standard and optional accessories.
Installation describes how to set up the waveform monitor for use.
Functional Check gives a procedure to verify the primary functions of your
waveform monitor.
Product Description
The waveform monitors measure and display 4:2:2 component serial digital
signals. A waveform monitor displays serial digital signals as the familiar
component signals, as an Eye pattern, as digital data or in a variety of standard
measurement modes. Use the EDH (Error Detection and Handling) system and
the suite of automated checks of the serial digital format to verify data integrity.
Refer to Appendix A: Specifications for details of the waveform monitor
performance.
Features
The waveform monitors offers the following features:
H
H
H
H
Two 270 Mbit serial component loop-through inputs
Digital video standards SMPTE 259M, ITU-R BT.656, and ITU–R BT.601
RGB and Y-PB-PR display format for 525 and 625 line signals
Eye Pattern display with Timing and Voltage Cursors on the WFM 601E and
the WFM 601M
H
Jitter demodulator with numeric jitter readout and video correlated jitter
waveform display on the WFM 601M
H
H
Parade or Waveform display of Y, PB, and PR component signals
Digital Waveform and Data displays with Data-cursor correlation between
display modes on the WFM 601M
H
H
RGB and composite Gamut checks with Diamond and Arrowhead displays
Field, line, and word (WFM 601M only) select with readout and bright up of
selected lines on Picture Monitor Out (Y or G Channel)
1–1
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Getting Started
H
H
H
H
SMPTE RP-165 standard EDH indicator for presence
Embedded Audio indentification
Analog audio Lissajous display on the WFM 601A
Source signal level meter and cable-length readout on the WFM 601E and
the WFM 601M
H
H
H
Lightning and Vector displays
Reclocked Serial Component Digital output following A/B switching
Video Reference: Internal Serial Component signal (follows A/B switching)
or external composite
Menus
An expanded feature set is available through the menus. You select menu items
with multi-use bezel buttons and knobs. When you select a menu item, such as
Voltage Cursors, on-screen labels show the current function of the bezel buttons
and knobs.
Calibrator
The waveform monitors provide an internal calibrator signal to set both vertical
and horizontal gain. The calibrator signal is a 700 mV, 100 kHz signal. Press the
CONFIG button and use the bezel knob to select the Calibrate menu. Press the
CAL SIG button to turn on the calibrator signal.
Accessories
The waveform monitor is shipped with several standard accessories. These
standard accessories and any optional accessories are listed here.
Standard Accessories
The following accessory items are included with this product:
1
1
1
3
3
2
User Manual, this manual (071-0103–XX)
Power Cord: United States and Japan only (161–0216–XX)
Replacement Fuse Cartridge: 3AG, 2A, 250 V, fast-blow (159–0021–00)
Replacement Graticule Light Bulbs (150–0168–00)
Replacement Air Filters for Fan (378–0415–00)
75 W High-frequency, End-line Terminations: 26 dB to 300 MHz
(011–0163–00)
1
Smoke Grey CRT Filter, installed on instrument (378–0258–00)
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Getting Started
Options
The following options are available when ordering a waveform monitor.
Power Cord Options. If you do not specify a power cord option, the waveform
monitor is shipped with a North American 125 V power cord and one replace-
ment fuse. The following power cord options are available when purchasing your
waveform monitor.
Power cords for use in North America are UL listed and CSA certified. Cords for
use in areas other than North America are approved by at least one test house
acceptable in the country to which the product is shipped.
H
H
H
H
H
Option A1. Power, Universal Europe, 220 V/16 A (Locking Power Cord)
Option A2. Power, United Kingdom, 240 V/15 A (Power Cord)
Option A3. Power, Australia, 240 V/10 A (Power Cord)
Option A4. Power, North America, 250 V/10 A (Power Cord)
Option A5. Power, Swiss, 240 V/6 A (Power Cord)
Optional Accessories
The following items can be ordered with the monitor or purchased through a
Tektronix field office or distributor. When ordering, include both the name and
part number (if available) of the option.
WFM 601A, WFM 601E, and WFM 601M Service Manual. (070-9836-XX) Provides
module-level troubleshooting information plus information to help identify
components, such as schematics, component locaters, and a complete parts list.
Front Panel Cover. The front panel cover protects the display face from damage
and dust.
1700F00 Plain Cabinet. This rack mount cabinet is half-rack width, made of
durable metal and painted silver-gray. Ventilating holes in the top, bottom, and
sides of the cabinet help dissipate heat.
1700F02 Carrying Case. This portable cabinet is similar to the 1700F00, but it has
rubber feet, a carrying handle, a flipstand, and a front cover.
1700F05 Side-by-Side Rack Adapter. The 1700F05 allows you to mount two
half-rack width instruments in a standard 19-inch rack.
1–3
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Getting Started
1700F06 Blank Panel. When you use only one side of a 1700F05 enclosure, insert
a 1700F06 Blank Panel in the unused side to improve appearance and air flow.
1700F07 Utility Drawer. When you use only one side of a 1700F05, install the
1700F07 utility drawer in the unused side to provide storage and improve
appearance and air flow. The drawer opens and closes freely, unless latched for
transport.
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Installation
This section provides instructions for installing the waveform monitor into a
standard rack or one of the optional cases. At installation time, save the shipping
carton and packing materials (including the anti-static bag) in case you need to
ship the instrument.
Included Accessories
Hardware Installation
The waveform monitor is shipped with several accessory items which may be
required for normal use. For more information on accessories, refer to page 1–2.
Because operating environments vary, the waveform monitor is not shipped with
a cabinet unless you have ordered one. All qualification testing for the waveform
monitor was performed in a 1700F00 cabinet. To guarantee compliance with
specifications, you should operate the waveform monitor in one of the cabinets
described here.
Cabinets
The cabinets offered for the waveform monitor provide EMI shielding, protect
against electrical shock, and protect against the accumulation of dust. Figure 1–1
shows the plain cabinet, option 1700F00. A rear panel fan supplies filtered,
cooling air which exits through the cabinet vent holes. Restricting the air flow
through the vents or the rear fan can lead to an excessive internal temperature.
NOTE. To meet EMI emission specifications, the waveform monitor must be
installed in a Tektronix 1700F00, 1700F02, or 1700F05 enclosure. The enclosure
front edges must securely contact the conductive front bezel on all four sides.
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Installation
21 cm
(8.25 in)
42.7 cm
(16.2 in)
13 cm
(5.1 in)
Figure 1–1: Dimensions of the 1700F00 plain cabinet
The optional 1700F00 cabinet is the basic element for all of the cabinets. The
1700F02 Portable carrying case is an enhanced version of the 1700F00 cabinet,
as is the 1700F05 side-by-side rack mount assembly. All cabinets are available
from your Tektronix representative.
1–6
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Installation
The portable cabinet, 1700F02, is shown in Figure 1–2. The 1700F02 has a
handle, four feet, and a flip-up stand. The mounting hole sizes and spacing are
different from those of the 1700F00.
21 cm
(8.25 in)
42.7 cm
(16.2 in)
13 cm
(5.1 in)
Figure 1–2: 1700F02 portable cabinet
1–7
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Installation
Installing the Waveform
Monitor in a Cabinet
Secure the waveform monitor in a cabinet using two 6-32 Pozidriver screws.
Figure 1–3 shows the location of these screws on the rear panel.
CAUTION. Do not carry a waveform monitor in a cabinet without installing the
rear panel mounting screws. Without the mounting screws, there is nothing to
keep the waveform monitor in its cabinet.
Cabinet securing
screws
Figure 1–3: Rear view of the waveform monitor in a 1700F02 cabinet
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Installation
Rack Adapter
The optional 1700F05 side-by-side rack adapter, shown in Figure 1–4, consists of
two attached cabinets. Use it to mount the waveform monitor and another
half-rack width instrument, such as an analog component monitor, in a standard
19-inch rack.
You can adjust the rack adapter so that the waveform monitor is aligned with
other equipment in the rack. See Figure 1–4.
48.2 cm
(19 in)
13.2 cm
(5.3 in)
Mounting
holes
43.9 cm
(17.3 in)
Mounting
holes
Front panel
alignment holes
Figure 1–4: The 1700F05 rack cabinet holds two instruments
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Installation
If you are using only one side of the rack adapter, insert a blank panel (1700F06)
or an accessory drawer (1700F07) in the unused section to improve airflow and
appearance. Figure 1–5 shows the blank panel and drawer.
1700F05
1700F07
1700F06
Figure 1–5: 1700F05 cabinet showing utility drawer and blank panel
Repackaging for
Shipment
To ship the waveform monitor to a Tektronix Service Center for service, follow
these instructions:
1. Attach a tag to the waveform monitor showing the name of the owner, the
complete address, the phone number, the instrument serial number and a
description of the required service.
2. Repackage the instrument in the original packaging materials. If the original
packaging materials are not available, follow these instructions:
a. Obtain a carton of corrugated cardboard having inside dimensions at
least six inches greater than the dimensions of the instrument. Use a
shipping carton that has a test strength of at least 275 pounds.
b. Surround the instrument with a protective bag (anti-static preferred). For
instruments that are not in a cabinet, wrap a cardboard piece around the
bagged instrument to protect internal components.
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Installation
c. Pack dunnage or urethane foam between the instrument and the carton. If
using Styrofoam kernels, overfill the box and compress when closing the
lid. You need three inches of cushioning on all sides of the instrument.
3. Seal the carton with shipping tape or industrial staples.
Connecting Power
The waveform monitor operates from a single-phase power source with the
neutral conductor at or near earth ground. The line conductor is fused for
over-current protection. A protective ground connection through the grounding
conductor in the power cord is essential for safe operation.
WARNING. When power is supplied, line voltage will be present in the waveform
monitor, even if the POWER switch is set to STANDBY.
AC Power Requirements
The waveform monitor operates from an AC line frequency of 50 or 60 Hz, over
the range of 90–250 Volts, without the need for configuration, except the power
cord. Refer to page 1–2 for the power cord options. The typical power draw is
75 W. Refer to Appendix A: Specifications for additional information on power
and environmental requirements.
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Installation
Installing the Waveform Monitor in a Serial Video System
The serial digital monitor can operate almost anywhere in the distribution system
due to its high impedance, bridging, loop-through inputs. This section describes
two types of connections and presents useful information on line termination.
Most serial equipment employs a receiver that regenerates an output signal, such
as the receiver shown in Figure 1–6. Routing the incoming serial signal through
one of the waveform monitor loop-though inputs and connecting the output of
the serial receiver to the other loop-through input allows you to compare the
incoming signal and the regenerated output signal.
Serial source
Regenerated
serial output
Waveform Monitor
(rear panel)
Serial receiver
Output
SER A
Loop-through input
Input
Serial video
output signal
SER B
Loop-through input
Figure 1–6: Monitoring the video bit stream of a serial receiver
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Installation
You can use the waveform monitor to check serial digital signals around a
routing switcher. It is possible to look at all the inputs to the switcher with the use
of a patch panel and the serial monitor as shown in Figure 1–7.
Waveform Monitor
(rear panel)
Serial video output signal
Patch panel
Serial router
SER A
Loop-through input
SER B
Loop-through input
Serial
sources
Output
Figure 1–7: Monitoring serial digital signals around a routing switcher
Line Termination
The waveform monitor uses passive loop-through serial inputs, similar in concept
to those used in baseband video equipment. Accordingly, the loop-through must
be terminated externally. It is important that this external termination meet
accuracy and return loss requirements.
If the waveform monitor is installed to monitor an operating link, the destination
receiver and the connecting cable serve as the termination. This monitoring
connection is best because it checks the performance of the entire serial path. The
return loss of the waveform monitor is sufficiently high that, in most cases, the
destination receiver sets the system return loss.
In cases where the waveform monitor is placed at the end of a link, a BNC
termination must be installed on one side of the loop-through connector. The
termination must be 75 W and DC coupled (good return loss extends to DC).
Return loss should exceed 25 dB from 10 kHz to 270 MHz. The supplied 75 W
terminators meet these requirements.
A terminator can be inspected for return loss problems using the WFM 601M or
WFM 601E waveform monitor and a serial source with low aberrations, such as
the Tektronix TG 2000 mainframe with a DVG1 Generator module. Connect the
generator serial output to one side of the waveform monitor loop-through
connector and install the terminator on the other side. Select the EYE mode and
observe the Eye Pattern, paying particular attention to leading edge aberrations.
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Figure 1–8 shows the Eye Pattern with a good return loss terminator. Figure 1–9
shows the distorted Eye Pattern of a terminator having only 13 dB return loss
(capacitive) at 100 MHz. Terminations with aberrations under 10% are accept-
able.
Figure 1–8: Eye Pattern display of a termination with good return loss
Figure 1–9: Eye Pattern display of a termination with poor return loss
Compatibility of BNC Center Pins. Most video equipment BNC connectors,
whether 50 or 75 W, use a 50 W standard center pin. Some laboratory 75 W BNC
connectors use a smaller diameter center pin. The BNC connectors on the
WFM 601M are designed to work with the 50 W standard (large diameter) center
pins.
Do not use connectors or terminators with the smaller center pins. They could
cause intermittent connections.
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Functional Check
The following procedure provides a basic operational check of the waveform
monitor. Only instrument functions, not measurement quantities or specifications,
are checked in this procedure. Therefore, a minimum amount of test equipment is
required.
WARNING. To avoid personal injury, be sure that a cabinet is installed on the
instrument.
All checks are made with the cabinet installed. The cabinet, an optional
accessory, must be installed on the instrument to avoid personal injury, maintain
proper environment for the instrument, keep dust out, and provide proper EMI
shielding.
If the Functional Check reveals improper operation or an instrument malfunction,
check the connections to and the operation of the test equipment. If it is operating
normally and the failure is repeatable, send the waveform monitor to qualified
service personnel for repair or adjustment.
For a complete check of the instrument performance, refer qualified service
personnel to the Performance Verification Procedure in the Service manual.
Required Equipment
The following equipment is required to perform this procedure:
H
Digital Component Television Signal Generator (1)
Provides 100% Color Bar signal.
For example: The Tektronix TG 2000 Signal Generation Platform with a
DVG1 module.
H
H
H
Function generator (1) (for WFM 601A only)
For example: Tegam FG 503
Coaxial Cable (1)
42-inch, 75 W, RG6 cable (Tektronix Part No. 012-0159-00) or equivalent
75 W Terminator (1)
End-line (Tektronix Part No. 011-0163-00)
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Functional Check
Initial Equipment Connections
Figure 1–10 shows how to configure a signal generator and the waveform
monitor to preform the Functional Check procedure.
Waveform Monitor
(rear panel)
Signal
generator
75 W terminator
SER A
Output
Loop-through input
Figure 1–10: Initial equipment connections
Follow these steps to configure the test equipment.
1. Ensure the waveform monitor is enclosed in a cabinet before connecting AC
power.
2. Connect the waveform monitor to an appropriate AC power source.
3. Connect the component serial digital output of the signal generator to one
side of the SER A input.
4. Terminate the other side of the loop-through the SER A input with the 75 W
terminator.
5. For the WFM 601A only, connect one of the Function Generator audio
outputs to pins 8 and 9 of the REMOTE 25-pin connector; connect the other
output to pins 10 and 11. See Appendix B: Remote Operation for more
information on configuring the waveform monitor’s remote connector for
audio input. Ensure that the generator amplitude is a nominal 5 V, but not
greater than 8 Vpeak.
This procedure does not check the monitor outputs (MON OUT). To check these
outputs, connect a GBR or YPbPr analog component monitor and check for the
Color bar pattern during the procedure.
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Functional Check
Functional Check Procedure
Perform the following steps to check the basic functions.
WARNING. A shock hazard exists in the waveform monitor when it has no cabinet
and it is connected to AC power. Always install the waveform monitor in a
cabinet before use.
1. Perform steps listed under Initial Equipment Connections.
2. Set the video generator to produce a 100% Color Bar signal and to enable its
output.
3. Press the front-panel power switch on the waveform monitor. Check that the
indicator beside the switch lights up indicating ON.
4. Check that the CRT and graticule light up. When you apply power, the
waveform monitor restores its last settings.
5. Initialize the waveform monitor settings. The waveform monitor contains a
factory Preset that restores the instrument to factory settings.
a. Press the PRESET MENU button.
b. Select the FACTORY setting by turning the bezel knob under the list of
presets to highlight FACTORY
c. Press the bezel button adjacent to RECALL to load the factory preset.
d. Check for the Waveform display mode with one channel of the Color Bar
signal displayed. Your display should look similar to Figure 1–11.
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Functional Check
@ 525/2:1
10mS/DIV
Figure 1–11: Initial display in the Waveform display mode
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Functional Check
6. Check the display brightness controls.
a. Press the CRT MENU button. The display controls should appear as
shown in Figure 1–12.
b. Check that you can position the waveform by adjusting the VERT and
HORIZ POS bezel knobs. Leave the signal horizontally centered and
with the waveform bottom on the 0 V line.
@ 525/2:1
10mS/DIV
DISPLAY
READOUT
TRACE
RD TEST
ON OFF
FOCUS
SCALE
INTENSITY
Figure 1–12: Channel 1 of a color bar signal with CRT adjustments visible
c. Use the bezel knobs under the CRT to adjust the focus, brightness of the
graticule scale, and intensity of the trace. Adjust the display controls to
the desired viewing levels.
d. Press the top bezel button to select READOUT. Adjust the readout
intensity to the desired level.
e. Exit the CRT menu by pressing the CRT button. The changes made while
the menu was displayed remain in effect.
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Functional Check
7. Check the Eye Display mode. (WFM 601E and WFM 601M only)
a. Press the EYE/JITTER button to select the Eye display mode. The
indicator next to EYE should light.
b. Check that the waveform is triggered to produce an Eye display like that
in Figure 1–13. The degree of noise on the Eye waveform is determined
by the video generator and connecting cables.
c. Press the lower bezel button to change from FLAT mode to EYE EQ
mode. You should hear the click of a relay and the display will change
slightly as the equalization circuit modifies the waveform.
d. Press the bezel button again to return to the FLAT mode.
100mV/DIV
OVERLAY
1nS/DIV
EYE
EQ EYE
Figure 1–13: Eye Pattern display mode
8. Check the Jitter display mode. (WFM 601M only)
a. Press the EYE/JITTER button to select the Jitter display mode. The
indicator next to JITTER should light.
b. The Jitter display should resemble that shown in Figure 1–14. Your jitter
readout values may differ from those in Figure 1–14. Jitter values are
affected by the quality of the signal source and connecting cables.
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Functional Check
1 UI/DIV
10mS/DIV
10HZ
JITTER (P-P)
TIMING
0.10UI
10HZ HPF
0.10UI
Figure 1–14: Jitter display mode
9. Check the Vector display modes.
a. Press the VECTOR/GAMUT button to select the Vector mode. The
indicator next to VECTOR should light.
b. Check that the display looks like the Vector display pictured in Fig-
ure 1–15.
c. If the display does not appear as illustrated, ensure that the generator is
set to output a 100% Color Bar signal.
d. Press the bezel button labeled VECTOR/LIGHTNING to select the
Lightning display.
e. Check that the display looks like the Lightning display pictured in
Figure 1–16.
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Functional Check
@ 525/2:1
10mS/DIV
R
M
G
100% BARS
I
Y
L
B
G
C
Y
Figure 1–15: Vector display for a 100% Color Bar signal
@ 525/2:1
Y
L
C
G
M
R
B
B
R
M
G
C
VECTOR
LIGHTNING
Y
L
Figure 1–16: Lightning display for a 100% Color Bar signal
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Functional Check
10. Check the Gamut display modes.
a. Press the VECTOR/GAMUT button to select the GAMUT display mode.
The indicator next to GAMUT should light up.
b. If the bezel button labeled DIAMOND/ARROWHEAD does not have
Arrowhead selected, press that bezel button to select ARROWHEAD.
c. Check that the display looks like the Arrowhead gamut display in
Figure 1–17.
@ 525/2:1
Y
ARROWHEAD
DIAMOND
| C |
Figure 1–17: Arrowhead gamut display
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Functional Check
d. Press the bezel button again to select the Diamond display mode.
e. Check that the display looks like the Diamond gamut display in
Figure 1–18.
@ 525/2:1
G
B
G
R
ARROWHEAD
DIAMOND
Figure 1–18: Diamond gamut display
11. Check the Digital Waveform display modes. (WFM 601M only)
a. Press the DGTL WFM/DGTL LIST button to select the Digital
Waveform display mode. The indicator next to DGTL WFM should light
up.
b. If the bezel button labeled VIDEO/DATA does not have VIDEO
selected, press that bezel button to select VIDEO.
c. Check that the display looks like the Video digital waveform display in
Figure 1–19.
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Functional Check
@ 525/2:1
F1: 50
10mS/DIV
VIDEO
Y’ 840 d
DATA
SMP 271
ACTIVE
UPDATE
FREEZE
NEXT FIELD
HEX
DECIMAL
BINARY
LINE SEL
SAMPLE
Figure 1–19: Video digital waveform
d. Press the bezel button again to select the DATA display mode.
e. Check that the display looks like the Data digital waveform display in
Figure 1–20.
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Functional Check
@ 525/2:1
F1: 50
10mS/DIV
VIDEO
DATA 840 d
DATA
SMP 271
ACTIVE
UPDATE
FREEZE
NEXT FIELD
HEX
DECIMAL
BINARY
LINE SEL
SAMPLE
Figure 1–20: Data digital waveform
12. Check the Audio display mode. (WFM 601A only)
a. Set the function generator for a sine wave at 1 kHz and 10 Vpk-pk or less
amplitude.
b. Press the ANALOG AUDIO button. The AUDIO button indicator should
light.
c. Check that the display looks like the Audio display in Figure 1–21.
1/2
1dB
40°
20°
Figure 1–21: Typical Audio display with small phase error
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Operating Basics
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Functional Overview
This section provides an overview of the front-panel features and rear-panel
connectors for the waveform monitor
Front Panel Overview
Figures 2–1 and 2–2 show the front panels of the three waveform monitors. A
brief discussion of each feature follows the illustrations. For detailed informa-
tion, refer to section 3, Reference.
Figure 2–1: WFM 601M front panel
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Functional Overview
WFM 601A front panel
WFM 601E front panel
Figure 2–2: WFM 601A and WFM 601E front panels
DISPLAY and VIDEO
DISPLAY Buttons
Six buttons in the DISPLAY or VIDEO DISPLAY area control the type of
display. Most buttons represent two related types of displays. Press a button to
select one of its two displays. Press the button again to select the other. When
you select a display type, the indicator beside it lights up.
EYE. Displays the serial input signal as an Eye pattern display. For the
WFM 601M, you can choose standard or equalized Eye displays with a bezel
button.
EQ EYE . (WFM 601E only) Displays the input signal as an equalized Eye pattern
display, which is useful when the signal has been degraded by long transmission
lines.
JITTER. (WFM 601M only) Displays the peak-to-peak jitter measurement over a
specified bandwidth. The display includes the demodulated jitter waveform for
measurement.
VECTOR. Displays the component signals as either conventional Vector or
Lightning mode. Vector mode plots the chrominance signals, Pb and Pr, against
each other to show their phase and amplitude relationships. The Lightning mode
shows amplitude and timing relationships between the luminance and chromi-
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Functional Overview
nance signals. The top of the display plots Y against Pb while the bottom plots Y
against Pr.
GAMUT. Displays the video signal in Diamond or Arrowhead gamut displays.
Diamond mode evaluates RGB signals for gamut limit violations. Arrowhead
display plots Y versus chrominance magnitude to show adherence to composite
gamut limits. A gamut error message appears at the lower-left when an RGB or
Composite gamut error is detected. Turn this alarm on or off in the CONFIG
menu.
WAVEFORM. Displays the video signal as voltage versus time. Any or all of the
three channels can be displayed from a single video line.
PARADE. Displays up to three channels of the serial video signal in succession.
MULTIPLE. Allows two display modes to be active at the same time. The
Waveform or Parade can be displayed with either Vector, Lightning, or Diamond.
PICTURE. Displays the video signal source. When Line Select is on, the selected
line is highlighted to identify where it is in the video picture.
BOWTIE. Displays a bowtie test signal to determine timing differences between
the three component signals, Y, Pb, and Pr. The external video source must
generate a Bowtie test signal.
DGTL WFM. (WFM 601M only) Displays the displays digital word values as a
waveform. The data values are not interpolated to generate the waveform.
DGTL LIST. (WFM 601M only) Displays the sequential data values in a list. Data
may be in linear data sequence or as groups of four values as they appear in the
multiplexed data stream: CB, Y, CR, Y’.
AUDIO ANALOG
(WFM 601A Only)
Displays the stereo analog audio input as a Lissajous pattern. The size of the
opening in the pattern is relative to the phase error between the X and Y audio
channels. The Lissajous pattern will take one of three general forms: a line, an
ellipse, or a circle.
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Functional Overview
Bezel Knobs
The center three knobs located below the CRT have multiple functions. Your
selection of DISPLAY or MENU functions or items from on-screen menus
determine the current function of each knob. A label adjacent to the knob
indicates its current function. The outside knobs are permanently assigned to
control vertical and horizontal trace position.
Bezel Buttons
The five bezel buttons along the right side of the CRT have multiple functions.
Your selection of DISPLAY modes, MENU functions, or on-screen items from
the displayed menus determine the current function of each button. A label
adjacent to each button indicates its current selection. The buttons either step
through a list of two or more items or turn a function on or off.
VIDEO IN
SWEEP
Allows you to turn on or off CH 1 (Y/R), CH 2 (PB/G), and CH 3 (PR/B) and to
select the serial digital signal from input SERIAL A or B. At least one input and
one channel are always on.
The two Sweep buttons select the waveform monitor sweep rate and horizontal
magnification.
LINE / FIELD. Toggles through four sweep rates: 1-Line (5 ms/div), 2-Line
(10 ms/division), 1-Field, and 2-Field. Selections are limited in some display
modes.
MAG. Provides horizontal magnification of waveform signals. Use the Horizontal
Position bezel knob to move left or right on through the waveform.
SERIAL
Displays a status screen providing EDH error statistics and format error
reporting, including ANC data errors and line/field length errors. This area
includes two indicators.
EDH DET. Lights up when the incoming serial digital signal has the SMPTE
RP165 specified Error Detection and Handling (EDH) signal.
ALARM. Lights up when a serial video data or format error occurs or when a
serial signal is not detected.
REF (Reference)
MENU
Selects either internal serial digital or external composite video input for the
instrument synchronization reference.
Provides access to configuration and measurement functions that affect the
DISPLAY mode. Press a MENU button to display that menu and enable the
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Functional Overview
associated functions. Press the button again to exit the menu and disable the
function.
POWER
Puts the waveform monitor into the standby or operational state.
CLEAR MENU
Turns off the MENU function readouts without affecting the menu settings. Also,
provides access to alternative displays in some display modes.
Using the Menus
The instrument has a set of front-panel selectable MENU buttons that call up
CRT readout menus. These menus operate in conjunction with the five bezel
buttons along the side of the CRT and the three knobs directly beneath it. See
Figure 2–3.
Enabled menu selections are surrounded by a rectangle to indicate that they are
active.
Pressing the CLEAR MENU button turns off the menu readout while leaving the
functions associated with the current Display mode.
Pressing a MENU button when its menu is displayed turns off both the menu
readout and, in most cases, disables the function. By selecting Line Select,
Cursor, Filter, or Gain, the last settings are returned. For example, if X5 was
active when you last used the Gain menu, returning to the Gain menu restores X5
gain.
Bezel buttons
Display menus
with their
optional selections
Menu selection buttons
Menu clear
Bezel knobs
Figure 2–3: Elements of the waveform monitor menu controls
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Functional Overview
Rear Panel Connectors
Figure 2–4 shows the rear panel of the waveform monitor. A brief discussion of
each connector follows the illustration.
Power Connector
The waveform monitor is designed to operate from a single-phase power source
with the neutral conductor at or near earth ground. Only the line conductor is
fused for over-current protection. A protective ground connection through the
grounding conductor in the power cord is essential for safe operation.
WARNING. Dangerous potentials are present on the Power circuit board. Do not
connect power to the waveform monitor if it is not enclosed in a prescribed
cabinet.
The waveform monitor operates from an AC line frequency of 50 and 60 Hz,
over the range of 90–250 VAC, without the need for configuration. Refer to
Appendix A: Specifications for additional information on power and environmen-
tal requirements.
Power connector
Figure 2–4: Rear panel of the waveform monitor
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Functional Overview
Loop-Through Inputs
There are three passive loop-through inputs located on the rear panel. All are
compensated for 75 W impedance and require proper termination at one end of
the loop-through connector or at the receiver in a monitored system.
SER A and SER B. Provides for connection of two 270 Mb serial component data
signals. These inputs have minimal impact on the monitored serial data path.
EXT REF. Provides for connection of an external synchronization signal such as
black burst or composite video.
Coaxial Outputs
Five rear panel connections drive signals into a 75 W environment.
MON OUT (Y/G, PB/B, PR/R). Provides three 75 W component signal outputs to
drive a component picture monitor. You can set the output format to YPBPR or
GBR. Invalid input signals cause a blinking highlight of the monitor display at
the line where the error occurs. This gamut error highlight or “bright-up” signal
is present on the Y (or G) output and is controlled in the CONFIG menu.
SERIAL OUT. Provides a reclocked version of the selected signal input (SER A or
SER B).
JITTER OUT. (WFM 601M only) Provides a 75 W output signal from the jitter
demodulator. The Jitter high-pass filter (JITTER HPF) selection does not affect
this signal. You can view the jitter waveform on the waveform monitor using the
JITTER display mode.
Multi-Pin Connectors
Two multi-pin connectors provide control using a PC or other controller. Refer to
Appendix B for pin assignment information for these connectors.
RS-232. This 9-pin subminiature D-type connector provides a serial interface for
remote control and calibration.
REMOTE. This 25-pin subminiature D-type connector provides limited remote
control functions.
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Functional Overview
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This section provides detailed information on the waveform monitor functions.
The topics are organized alphabetically. Most topics are named after the front
panel labels and button names.
Audio Display (WFM 601A Only)
The Audio display allows you to measure stereo audio phase errors of 20 kHz
analog stereo audio signals. Connect the audio signals to the Remote Connector
described in Appendix B on page B–2.
Correct phasing between two audio channels is quickly verified by the degree of
separation in the pattern shown on the display. Amplitudes are verified by the
direction of the pattern’s axis.
Audio amplitude and phase is monitored using a calibrated X/Y Lissajous
display. Using this display you can verify that the program audio will be properly
reproduced on both monaural and stereo receivers.
Lissajous Patterns
Any oscilloscope, including a vectorscope, that has identical X and Y amplifiers
can make accurate stereo audio phase measurements. When identical signals of
equal amplitude are input, the display pattern produced will be a Lissajous
pattern. The opening of the Lissajous pattern is relative to the phase error
between the signals. The remainder of this section discusses some of the
Lissajous patterns generated by the waveform monitor.
Figure 3–1 depicts an input audio signal from one channel. The figure on the left
depicts input from the X channel only, which produces a line pattern along the X
axis of an XY plot. Similarly, a line pattern along the Y axis of an XY plot
indicates an input audio signal from the Y channel only, as shown in the figure
on the right.
X
Y
X
Y
=
=
Figure 3–1: A signal from one channel only
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Figure 3–2 depicts an input audio signal in which the X and Y channels are in
perfect phase and have equal amplitudes.
X
=
Y
Figure 3–2: X and Y signal in phase with equal amplitudes
Figure 3–3 depicts an input audio signal in which the X and Y channels are out
of phase by some amount but have equal amplitudes. The pattern is an ellipse
rather than an line, which indicates the signals are out of phase. The axis of the
ellipse lies terminates in the target boxes, which indicates that the amplitudes are
equal.
X
=
Y
Figure 3–3: Signals out of phase with equal amplitudes
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Figure 3–4 depicts signals out of phase with unequal amplitudes. The figure on
the left shows a signal in which the X channel amplitude is greater than the Y
channel. The figure on the right depicts a signal with a larger Y channel
amplitude.
X
Y
X
Y
=
=
Figure 3–4: Signals out of phase with unequal amplitudes
Figure 3–5 depicts an input audio signal in which the X and Y channels are
reversed (reversed polarity) with equal amplitudes.
X
=
Y
Figure 3–5: Signals with reverse polarity and equal amplitudes
If the phase error between the X and Y channels is exactly 90 degrees and the
amplitudes are equal, the pattern of the audio signal input is a circle. See
Figure 3–6.
X
=
Y
Figure 3–6: Signals with a phase error of 90 degrees and equal amplitudes
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Measuring Phase Error
The electronic graticule of the Analog Audio Display has scales for measuring
stereo audio phase and amplitude errors. The dashed diagonal line is the
measurement axis for errors less than 90 degrees and is terminated in amplitude
targets that correspond to the length of the X and Y axes. The boxes surrounding
the crosshairs are equal to amplitude errors of 1/2 and 1 dB, respectively.
Phase error is measured as degrees of phase shift and is relative to the minor axis
of the ellipse pattern displayed on the CRT. To determine the phase error, read the
value of the electronic graticule where the ellipse is tangent to the scale of the
electronic graticule.
1/2
1dB
40°
20°
Figure 3–7: Typical Audio display pattern with small phase error
Adjusting the Audio Gain
The waveform monitor has four graticule calibrations available: 0, +4, +8, and
+12 dBu. To adjust these levels use the following procedure.
1. While in the Audio display mode, press the GAIN menu button.
2. Press one of the bezel buttons to select the appropriate calibration level.
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Bowtie Display
The Bowtie display evaluates the relative amplitude and timing between the three
video channels. This display requires a special test signal from the monitored
source. See Figure 3–8. The Tektronix TG 2000 Waveform Generator can
produce a bowtie signal with 20 ns time marks, which aid in signal evaluation.
The signal is a 500 kHz sinewave on CH 1 (luminance) and 502 kHz sine waves
on CH 2 (Pb) and CH 3 (Pr).
The display is made up of two separate waveforms as shown in Figure 3–8. The
left waveform always compares CH 1 to CH 2. The right waveform always
compares CH 1 to CH 3.
Figure 3–8: Typical Bowtie display on the waveform monitor
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Timing Measurement
The timing measurement is based on alignment of the center marker and the null
point at the center of the waveform. The generator provides a center marker,
which is centered on the null point when interchannel timing is correct. A shift of
the null to the left or right indicates a difference in the relative timing. If the null
shifts two full time markers, the relative timing error between channels would be
40 ns. If the null is to the left of the center marker, the color difference channel is
advanced relative to the luminance channel. When either of the nulls is shifted to
the right, that color difference signal is delayed relative to the luminance channel.
In Figure 3–9, the chrominance channel—CH 3 (Pr)—is advanced relative to the
luminance channel by 20 ns.
Shifted null point
Figure 3–9: Bowtie waveform showing a timing error in CH 3
Although you can use Waveform or Lightning displays to determine channel
timing, the Bowtie method provides better resolution of channel timing and is the
easiest to use.
Relative Gain Check
The bowtie measurement provides a method to determine whether the relative
channel gain is correct. If the gains are not equal, the center null point will not be
a complete null. Figure 3–10 shows a Bowtie display with an incomplete null in
the right waveform. If the gain error is in CH 1, neither waveform has a complete
null. If CH 2 gain is off, the left waveform will not null completely, but the right
one will. If the gain is off for CH 3, as in Figure 3–10, the left waveform will be
normal and the right one will not reach a complete null.
Incomplete null
Figure 3–10: Bowtie waveform showing gain error in CH 3
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Calibration
Instrument gain may require adjustment for special monitoring applications or to
ensure the best precision for cursor or graticule signal measurements. Follow
these procedures to set the vertical and horizontal gain.
Setting Vertical Gain
1. Press the WAVEFORM/PARADE button to select the Waveform display.
2. Press the CONFIG menu button and use the bezel knob to select the
CALIBRATE submenu. Press the bezel buttons to set CAL SIG on and
GAIN CAL on.
3. Use the VERT POS control to place the calibrator signal between the 0 V
reference and 0.7 graticule lines. The amplitude of the calibration signal is
exactly 700 mV.
4. If the RESET V CAL readout is on, press the adjacent bezel button to turn it
off. Pressing the RESET V CAL bezel button reinstates the gain setting
established at the last calibration.
5. Check to see that the calibrator signal is now displayed at exactly 700 mV. If
the gain is off, adjust the gain for exactly 700 mV with the V CAL bezel
knob. Press the GAIN CAL button if the V CAL knob is not available.
Setting Horizontal Gain
1. Press the Waveform/PARADE button to select the Waveform display.
2. Press the CONFIG menu button and use the bezel knob to select the
CALIBRATE submenu. Press the bezel buttons to set CAL SIG on and
GAIN CAL on.
3. If the RESET H CAL readout is on, press the adjacent bezel button to turn it
off. Pressing the RESET H CAL bezel button reinstates the gain setting
established at the last calibration.
4. Press the SWEEP LINE/FIELD button to select the 2 Line sweep mode
(10 ms/div) and check for one full cycle per major division.
5. If the gain is off slightly, adjust the horizontal gain with the H CAL bezel
knob. If the H CAL knob is not available, press the GAIN CAL button.
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Configure Menus
The Configure menu provides configuration selections for all display modes and
some external signals. Press the CONFIG MENU button at any time to enter the
Configure menu. Figure 3–11 shows a sample Configure menu and the bezel
knob used to select from the list of Configure menus. Figure 3–12 provides a
map of all Configure menu functions.
COLOR BARS
75% 100%
WFM/VEC
GAMUT
WFM AS
RGB YPBPR
EYE PATTERN
JITTER
PBPR OFFSET
0 mV
350 mV
SER ALARM
FORMAT
EAV-SAV
PASS STRIP
CALIBRATE
Figure 3–11: Configure menu for WFM/VEC showing the selection knob
Turning the knob causes a selection box to scroll through the menu list. The
selections assigned to the bezel buttons change as you scroll through the list of
Configure menus. Press the CONFIG button again to remove the Configure
menu.
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WFM/VEC
GAMUT
COLOR BARS
GAMUT CHECK
75%
100%
OFF
RGB
CMPST
BOTH
EYE PATTERN (WFM 601E and WFM 601M only)
JITTER (WFM 601M only)
MODE
OVERLAY
10 EYE
WFM AS
JITTER HPF
10 Hz
1kHz
10kHz
RGB
YPBPR
SER ALARM
FORMAT
CALIBRATE
MISSING VID
ALARM DISP
OFF
ALARM
PBPR OFFSET
0 mV
SCREEN
PIX MON
BOTH
CLOCK BW
10 Hz
100 Hz
FULL FIELD
100kHz
350 mV
CRC ERROR
OFF ALARM
READOUT
UI
SEC
1 kHz
EAV-SAV
GAMUT (IRE)
100
120
PASS
STRIP
110
131
ACTIVE PIC
CRC ERROR
OFF
OFF
ALARM
LIMIT
FORMAT
NTSC
PAL
FMT ERROR
OFF ALARM
AUTO
MON OUT AS
CAL SIG
ON OFF
GBR
YPBPR
STANDARD
GAIN CAL
ON OFF
525/2:1
625/2:1
AUTO
SYNC
DIRECT
AFC
Figure 3–12: Map of functions available in the Configure menu
Configure Menu
Description
The following list describes the items in each Configure menu.
WFM/VEC. Contains choices for the Waveform, Parade, Vector, and Lightning
video displays.
H
H
COLOR BARS. Selects either 75% or 100% graticules for the Lightning and
Vector modes.
WFM AS. In Waveform or Parade modes, determines if channels 1, 2, and 3
are displayed in their native Y, Pb, Pr format (YPbPr) or transcoded to R, G,
B (RGB). WFM AS does not affect the picture monitor output signal (MON
OUT).
H
H
PBPR OFFSET. Allows adding a 350 mV positive offset to the Pb and Pr
channels to facilitate comparison with the Y channel. Does not affect the
transcoded RGB display or the picture monitor out signal.
EAV-SAV. Determines what data is passed to the D/A converters. In Strip
mode, only digital signals between the SAV and EAV (start and end of active
region) sync words are passed to the D/A converters and subsequently to the
display and the picture monitor output. In Pass mode all digital data is sent to
the converters.
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GAMUT. Configures conditions and error indicators for the gamut error alarm.
H
GAMUT CHECK. Determines whether RGB, Composite (CMPST), or both
types of gamut errors trigger the gamut alarm. RGB indicates when the R, G,
or B signals are less than 0 mV or greater than 700 mV. CMPST indicates
when the sum of luminance and peak chrominance exceed the level selected
with GAMUT (IRE). Use ALARM DISP to determine the indicator of the
gamut alarm.
H
ALARM DISP. Determines how the gamut alarm is indicated. In SCREEN
mode, a gamut error message appears in the lower left of the CRT. In PIX
MON mode, the portion of the video picture that exceeds gamut, blinks in a
highlighted or bright-up mode on the picture monitor output.
H
H
GAMUT. Sets the level used for the CMPST gamut alarm. For NTSC, the
levels are 100, 110, 120 and 131 IRE. For PAL, the levels are 700 mV and
950 mV. Use GAMUT CHECK to pick the CMPST alarm.
LIMIT FORMAT. Determines if the gamut limit check is for PAL or NTSC
format signals. AUTO mode automatically determines the input format.
EYE PATTERN. Selects the display mode and attenuation of low-frequency jitter
for the EYE and EQ EYE display modes.
H
H
MODE. Selects between OVERLAY and 10-EYE trigger modes. Overlay
displays all bits of a serial word at each eye location. The 10-EYE mode
displays all ten bits of the serial signal at ten fixed locations.
CLOCK BW. Selects between 10 Hz, 100 Hz, and 1 kHz filters to suppress
low-frequency jitter.
JITTER. Configures the Jitter measurement with a high pass filter and the units of
the readout.
H
H
JITTER HPF. Selects from high pass filters 10 Hz, 1 kHz, 10 kHz, and
100 kHz. The selection appears in the jitter readout box and in the upper
right corner of the CRT, just below the horizontal deflection factor.
READOUT. Determines whether the jitter measurement is in the units UI
(unit intervals) or seconds or if the readout is off.
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SER ALARM. Selects which events cause the Alarm indicator to light. The
front-panel Alarm light can be activated by up to four different serial video
conditions. Press the adjacent bezel buttons to turn these alarms on or off.
When an alarm condition occurs, the Alarm light stays on for a minimum of one
second. If selected alarm conditions occur at a frequency greater than once per
second, the Alarm light stays on continuously.
When any of the following conditions are enabled and a condition occurs, the
alarm indicator turns on:
H
H
H
H
MISSING VID. The input serial signal level drops below a preset threshold
(determined by the serial receiver).
FULL FIELD CRC ERROR. The transmitted cyclical redundancy checksum
(CRC) does not match the actual CRC for the last video field.
ACTIVE PIC CRC ERROR. The transmitted CRC does not match the actual
CRC for the last active picture region.
FMT ERROR. A serial format error occurs.
FORMAT. Selects the format of the picture monitor out signal and the scanning
standard expected by the waveform monitor.
H
H
MON OUT AS. Configures the analog component picture monitor out signal
as either Y, Pb, Pr, (YPbPr) or as GBR. Composite sync is added to the Y or
G channel.
STANDARD. Selects the scanning standard, from either 525/2:1 or 625/2:1,
that the waveform monitor expects at the SER A and B inputs. This choice
affects the monitor sweep rates and the line selector. In AUTO mode, the
monitor selects either 525 or 625 line operation based on the detected field
rate (60 Hz or 50 Hz).
H
SYNC. Selects either Direct or AFC synchronization of the internal timing.
The Direct mode uses the 27 MHz word clock as extracted from the serial
digital signal. This mode passes any signal jitter on to other internal
operations and to the MON OUT video signals. The AFC mode uses a
phase-locked loop circuit to produce a stable clock. The phase-locked loop
averages small-phase differences in the clock. The AFC mode is best in most
situations. Use the Direct mode when large, low-frequency jitter is present in
your system.
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CALIBRATE. Allows minor adjustment to the vertical and horizontal gain
calibration prior to making amplitude measurements. To adjust gain, you need a
700 mV, 100 kHz signal. Use a known external reference signal or the internal
calibrator signal. Selections for the CALIBRATE menu are only present when in
the Waveform or Parade display modes.
H
CAL SIG. Turns on or off the internal 700 mV calibrator signal. The
calibrator signal is synchronized in order to provide an accurate 100 kHz
timing standard. If the calibrator signal varies significantly from 700 mV
when RESET V CAL is not visible, then the waveform monitor may require
calibration.
H
GAIN CAL. Enables or disables the V CAL and H CAL controls. The
V CAL knob adjusts vertical gain and the H CAL knob adjusts the horizontal
gain. To return the gain to its original calibrated setting, press the RE-
SET V CAL or H CAL bezel buttons.
In addition, the following software version information appears:
H
H
Software Version Number. The lower right corner of the CRT shows the
version number for the instrument software preceded by a “V”.
Coprocessor Code Version. The lower right corner of the CRT shows the
version number of the serial coprocessor code preceded by a “C”.
CRT Settings
The CRT menu provides control of trace parameters and readout intensity. To
access the CRT menu at any time, press the MENU CRT button. Press the top
bezel button to access the Display, Readout and Trace controls. Use the assigned
bezel knobs to adjust the display. You can control the following functions from
the CRT menu:
H
H
H
H
H
Focus. Sets the sharpness of the waveform trace.
Scale. Sets the intensity of the side lights that illuminate the etched graticule.
Intensity. Sets the trace intensity or brightness separately from the readout.
Readout Intensity. Sets the readout intensity or brightness.
Trace Rotation. Adjusts the rotation of the trace.
How to Recover from
Minimal Readout Intensity
Readout intensity can be turned below the minimum viewing level, which makes
all CRT menus disappear. If this happens, press the CRT menu button and note
that the menu comes up at a reduced intensity. Pressing the top CRT bezel button
once moves the cursor to READOUT and reduces the intensity again. At this
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point, turn the bezel knob next to the HORIZ POS knob clockwise to increase the
readout intensity.
Press the CRT button to exit the CRT menu.
Cursors
Cursors allow you to measure the amplitude or time difference between
waveform features. Cursors usually provide better measurement resolution than
is possible measuring against the etched graticule. Press the CURSOR MENU
button to display the Cursor menu.
Cursor Menu Features
The Cursor menu allows you to choose Voltage Cursors, Time Cursors, Markers,
or both Voltage and Time cursors. When Voltage and Time cursors are active, the
three bezel knobs control cursor 1, cursor 2, and cursor tracking. The difference
in the settings of cursor 1 and cursor 2, is reported with CRT readout as DV or
DT. In the Both mode (V+T), use the CONTROL bezel button to alternate
between voltage and time cursor control. Tracking locks the cursors at their
current separation and lets you move them together.
Markers provide adjustable screen reference points with no associated readout.
Markers may be positioned vertically, but not horizontally. The three markers are
identified by the type of dashed lines:
H
H
H
Mark 1 has long dashes.
Mark 2 has double dashes.
Mark 3 has short dashes.
Pressing the CLEAR MENU button removes the cursor selections, but the
cursors, difference readout (voltage or time), and control assignments remain
active and on screen. To restore the Cursor menu, press the CURSOR menu
button again. To turn off the cursors, press the CURSOR button when the Cursor
menu is displayed (two presses when the Cursor menu is not displayed).
Variable Gain and Sweep
with Cursors
The Cursors are tied to the trace scaling. Hence, cursor measurements are
accurate with Gain set to X5, X10, or Variable Gain.
The various sweep modes are compatible with the Time Cursors. You can make
Time Cursor measurements in any of the Sweep modes: 1-Line, 2-Line, 1-Field,
or 2-Field. You may need to brighten the cursors and the trace by pressing the
CRT MENU button and adjusting the intensity.
Time Cursors measurements are possible with MAG on, though both cursors may
be off screen. The measurements are accurate, even though you cannot see the
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Time Cursors. Use the HORIZ POS knob to pan left or right to the cursor
locations.
Digital List (WFM 601M Only)
The Digital List display lists the data values in sequence as they occur in the
digital component video signal. Press the DGTL WFM/DGTL LIST button to
enter the Digital List mode. Figure 3–13 shows an example of the Digital List
display. You can use the data cursor, assigned to a bezel knob, to scroll through
the data. The location of the data cursor in the Digital List display is correlated
with the data cursor in the Digital Waveform and Parade display modes.
Video/Data Selection
The Video/Data bezel button chooses between two displays. Figure 3–13 shows
the DATA mode. Figure 3–14 shows the VIDEO mode with the same data values
as those in Figure 3–13. The VIDEO mode groups the samples in the order in
which they occur in the data stream, CbYCrY’. The label above the grouped list
indicates this order.
@ 525/2:1
DATA
2FE
30D
2FE
30D
2FE
30D
2FE
324
2FD
324
312
374
364
374
3A6
h
h
h
h
h
h
h
h
h
h
h
h
h
h
h
F1: 80
VIDEO
DATA
SMP1160
ACTIVE
UPDATE
FREEZE
NEXT FIELD
HEX
DECIMAL
BINARY
LINE SEL
SAMPLE
Figure 3–13: Example of the Digital List display
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Data Format
Press the fourth bezel button to select the base used for displayed data from
hexadecimal (h), decimal (d), or binary (b). The characters (h, d, or b) following
the data indicates its base.
@ 525/2:1
Cb Y Cr Y’
2FE
h
F1: 80
VIDEO
DATA
30D
h
2FE
h
h
h
h
SMP1160
ACTIVE
30D
h
2FE
h
UPDATE
FREEZE
30D
h
2FE
324
2FD
324
h
h
h
NEXT FIELD
312
374
364
374
3A6
h
h
HEX
DECIMAL
BINARY
h
LINE SEL
SAMPLE
Figure 3–14: Data List display mode in the Video mode
Freeze/Update
Press the second bezel button to select between active, video data and frozen
data. Frozen data is not updated with current values from the video data stream.
The Freeze mode stores six lines with three lines from each field. Use the Next
Field bezel button to switch between fields.
Line Select Settings
In the Digital List display, Line Select is set to Sample by default. Use the bezel
knobs labeled LINE and SAMPLE to select video lines and samples within a
line. The current field and line appear at the upper left on the CRT. Use the Next
Field bezel button to alternate between fields in a frame. The Sample knob
scrolls to the end of the line then returns to the beginning of the line.
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Digital Waveform (WFM 601M Only)
The Digital Waveform display shows the component data samples as a wave-
form. Press the DGTL WFM/DGTL LIST button to enter the Digital Waveform
mode. Figure 3–15 shows an example of the Digital Waveform display. You can
use the data cursor, assigned to a bezel knob, to scroll through the data wave-
form. The data cursor remains centered while the data scrolls by. The location of
the data cursor on the Digital Waveform display is correlated with the data cursor
in the Digital List Display and with the sample select indicator or “blivit” in the
Waveform and Parade Displays. For more information on the data cursor, refer to
Line Select on page 3–39. The value of the current sample on each waveform
appears above the waveform. The character (h, d, or b) following the value
indicates its base.
@ 525/2:1
->Y’ 786
d
F1: 80
SMP1163
ACTIVE
Cb 804
d
d
Cr 804
LINE SEL
SAMPLE
Figure 3–15: Digital Waveform display in the VIDEO mode
Video/Data Selection
Use the VIDEO/DATA bezel button to select the format of the digital waveform.
Figure 3–15 shows the VIDEO mode and Figure 3–16 shows the DATA mode.
Note the DATA label at the top of the data cursor in Figure 3–16.
The VIDEO mode displays the three video component channels, YCbCr, as
separate waveforms. Any or all of the three channels may be displayed at one
time. The channels are correctly time aligned so the data cursor shows the current
sample values for each. Note that Y and Y’ samples are interleaved to create the
CH 1 waveform. As you move the data cursor through the CH 1 data, the label
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will switch between Y and Y’. The symbol “–>” indicates the currently selected
sample. The offset or broken data cursor seen in Figure 3–15 indicates that the Y’
sample is selected and it is not aligned (nonco-sited) with the Cb and Cr channels.
The Y sample is aligned or co-sited with Cb and Cr channels and its data cursor
appears in line. Use the Video mode when selecting samples in the active picture
area.
The DATA mode displays the samples in sequence as they are received
(Cb,Y,Cr,Y’). Use the Data mode to view sync words (EAV and SAV) and
ancillary data.
Output Monitor Signals
The data cursor creates intersecting horizontal and vertical highlighted (or bright
up) lines on the analog video output to indicate where in the video signal the data
cursor is located. When you move the data cursor to the end of a line, the output
picture shifts to show you the horizontal sync region. Likewise, when you move
to the beginning or end of a frame, the vertical sync region shifts to the center of
the screen. As you scroll through line samples, watch the location of the
highlighted line on the output monitor. By doing so, you can correlate changes in
the video signal with changes in the digital data values. To use the cross-hair
cursor in the horizontal and vertical blanking regions, set EAV–SAV to PASS in
the Configure WFM/VEC menu.
@ 525/2:1
F1: 176
10mS/DIV
DATA 274
h
SMP 543
ACTIVE
LINE SEL
SAMPLE
Figure 3–16: Digital Waveform display in DATA mode
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Gain Interactions
Use the GAIN MENU function to magnify the vertical gain of a single channel
by X5 or X10. Figure 3–17 shows CH 1 with X5 gain. Note the data cursor
readout is for the “Y” channel with a value of 868 decimal.
@ 525/2:1
Y
868 d
F1: 80
X1
X5
SMP1165
ACTIVE
X10
VARIABLE
ON OFF
LINE SEL
SAMPLE
Figure 3–17: Digital Waveform display showing X5 gain on CH 1 (Y) waveform
Line Select Settings
Choosing the Digital Waveform display forces Line Select to the Sample mode.
Line Select in the Sample mode assigns two bezel knobs to select video lines and
samples within a line. The current field and line readout appear at the upper left
on the CRT. Press the Next Field bezel button to alternate between fields in a
frame. The Sample knob scrolls to the end of the line then returns to the
beginning of the line.
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Eye Display (WFM 601E and WFM 601M Only)
The Eye pattern display presents a voltage-versus-time waveform composed of
multiple sweeps of the serial bit stream. You can measure the amplitude, rise
time, aberrations, and jitter of the serial signal using the Eye pattern display.
Select either the Serial A or B input for display and measurement. You can also
choose to display the raw signal data (FLAT) or perform receiver equalization
(EQ EYE) on the signal before display.
Use the cursors to measure parameters of the Eye display. Refer to page 3–22 for
instructions on using the cursors to measure the Eye display.
EYE and EQ EYE Modes
The EYE and EYE EQ modes allow measurement in short and long transmission
line environments, respectively.
On the WFM 601E, press the EYE/EQ EYE button to select the EYE or EQ EYE
modes.
On the WFM 601M, press EYE/JITTER button to select the EYE mode. Press
the lower bezel button to alternate between the EYE and EQ EYE modes. If the
EYE/EQ EYE selection is not visible when the EYE display is active, press the
CLEAR MENU button.
The EYE mode directly displays the serial signal applied to the rear panel
loop-through input. This mode is best for directly monitoring a serial digital
source or a short length of cable. When monitoring a signal near the end of a long
cable run, the EYE mode might show what appears to be a band of noise. Use the
EQ EYE mode to restore the signal shape and amplitude before display.
The EQ EYE mode is best used to measure signals degraded by transmission
through a long cable. The EQ EYE mode applies receiver equalization to the
serial signal to restore it. Because equalization enhances the signal and causes
signal peaking, it is best used to check signal continuity. You should regard EQ
EYE display measurements as uncalibrated and merely qualitative.
For the best measurements, use the EYE mode whenever possible. Use EQ EYE
when the EYE mode fails to provide a useful signal.
Clock BW Filters
Both EYE pattern displays can attenuate low frequency jitter using one of three
clock-recovery filters. Select from the 10 Hz, 100 Hz, and 1 kHz filters. Use
these Clock BW filters to separate the medium and high frequency jitter from
low frequency jitter. The filter frequencies indicate the –3 dB point. To access the
filters, press the CONFIG button and select the EYE PATTERN menu. The
10 Hz and 1 KHz filters allow jitter measurements according to the SMPTE
RP-184 standard.
The selected clock bandwidth filter appears in a readout field directly below the
horizontal deflection factor.
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Trigger Modes
Two trigger or sweep modes are available with the Eye display: OVERLAY and
10-EYE.
OVERLAY. In OVERLAY mode, all bits of a serial word are overlaid at each eye
location. Because numerous transitions for the data bits are overlaid, each eye
crossing shows the timing jitter in the video system. Figure 3–18 shows the
Overlay Eye display. Approximately three eyes are displayed and the horizontal
scale is 1 ns/div.
100 mV/DIV
OVERLAY
1 nS/DIV
10 Hz
Figure 3–18: Overlay Eye display
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10 EYE. In 10-EYE mode, every tenth bit of the serial signal appears at a fixed
location on the display. Figure 3–19 shows the 10-EYE mode. Approximately
10 eyes are displayed per horizontal sweep, and the horizontal scale is 3 ns/div.
In the 10-Eye more, you can observe events that are correlated with the serial
word rate or horizontal line rate. In this mode, you can also observe systematic
errors that affect certain bits in the data word.
100 mV/DIV
10–EYE
3 nS/DIV
10 Hz
Figure 3–19: 10-EYE triggered display
To select the trigger mode, press the CONFIG button and use the bezel knob to
select the EYE PATTERN menu. Press the DISPLAY bezel button to select
OVERLAY or 10 EYE. The trigger mode is indicated by a readout in the upper
left corner of the CRT. The trigger modes are available with both EYE and EYE
EQ displays.
Gain
The calibrated vertical gain for the EYE and EQ EYE modes is 100 mV/div. You
can expand the vertical scale by selecting X5, X10, or Variable gain. The vertical
scale is displayed in the upper left corner of the CRT screen. Press the GAIN
button to access the X5, X10, and Variable Gain gain selections. When Variable
Gain is enabled, a “>” appears in front of the deflection factor to indicate the
uncalibrated condition.
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Eye Pattern
Measurements
This section describes how to measure parameters of the Eye pattern to verify
standard signal specifications for serial digital transmission. The measurements
discussed here are amplitude, aberrations, rise time, and jitter. Figure 3–20
illustrates the initial equipment connections.
Waveform Monitor
(rear panel)
Serial source
75 W terminator
SER A
Output
Loop-through input
Figure 3–20: Connections for measuring a serial source
Setup for Measurements. Perform the following steps in preparation for the Eye
pattern measurements. Figure 3–20 illustrates the equipment connections.
1. Connect the serial source to the monitor with a 75 W cable two meters or less
in length. Use high quality, low loss coaxial cable, such as Belden 8281.
2. Connect a 75 W terminator with at least 25 dB return loss to 300 MHz on the
other end of the loop-through input.
3. Set the serial source to output a 100% Color Bar signal.
4. Press the EYE/JITTER button to select the Eye Pattern display.
5. Press the GAIN MENU button and select 1X vertical gain.
6. Adjust the vertical position so the bottom of the waveform rests on the –.1 V
line.
Measuring Amplitude. Measuring the signal amplitude can help you determine if
the signal amplitude is too low due to cable losses or other system problems. This
procedure shows you how to measure the signal amplitude using both the
graticule and the Voltage Cursors. To measure the signal amplitude, follow these
steps:
1. Perform the initial settings for Eye measurements described on page 3–22.
2. Select the desired input channel (SER A or B).
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3. Use either the OVERLAY or 10-EYE display mode. Press the CONFIG
MENU button and select the EYE PATTERN menu to choose OVERLAY or
10-EYE.
4. Set CLOCK BW, in the Config EYE menu, to 1kHZ in order to reduce the
effects of time jitter, which can obscure the amplitude measurement.
5. For graticule measurement, select X1 vertical gain and make sure that
variable gain is off. At X1 gain, the scale is 100 mV/div.
6. Use the VERT POS knob to position the waveform bottom at the 0 V line. If
the waveform exceeds 800 mV, position its bottom at the –.1, –.2, or –.3 V
line. Measure the amplitude at a horizontal part of the waveform top line.
7. Enable the Voltage Cursors.
8. Position one cursor at the top horizontal part of the waveform; ignore any
overshoot on the rising edge.
9. Position the second cursor at the bottom of the waveform; ignore any
undershoot. The Voltage Cursor readout gives the signal amplitude.
10. For Cursor measurements, you can use any gain setting, including variable
gain, since the waveform and the cursors are equally affected by the gain
setting. Use higher gain settings, such as X5, to help match the cursor to the
waveform.
Signal sources should measure 800 mVp-p "10%. Signal amplitudes outside this
range can degrade receiver performance.
Measuring Aberrations. Serial sources should produce good signal transitions with
a minimum of overshoot and ringing. Automatic equalizer circuits in receivers
may be sensitive to aberrations greater than 10%.
To measure aberrations, perform the following steps:
1. Perform the initial settings for Eye measurements described on page 3–22.
2. Enable the Voltage Cursors.
3. Place one cursor at the peak of the overshoot and the other at the bottom of
the topline of the waveform. Include any ringing (the oscillation following
overshoot) in the measurement. Essentially, you are measuring the thickness
of the top line of the waveform.
4. Perform the same cursor measurement on the bottom line thickness,
including any undershoot and ringing.
5. Aberrations at the top or bottom line should not exceed 10% of the signal
amplitude.
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The Eye display bandwidth of the waveform monitor is 450 MHz, so it can not
display aberrations faster than this. Most receiver circuits are also bandwidth
limited and usually ignore fast transients. This common bandwidth makes the
waveform monitor a good indicator of problem sources in systems.
Measuring Rise Time. Rise time measurements provide a check on the perfor-
mance of sources and signal degradation by cabling.
To measure rise time, perform the following steps:
1. Perform the initial settings for Eye measurements described on page 3–22.
2. Select Variable Gain and size the waveform to 10 major divisions.
3. Use the Vert Pos bezel knob to position the bottom of the trace at the –.3 line
and check that the top is aligned with the .7 V line.
4. Enable the Timing Cursors.
5. Align the cursors as shown in Figure 3–21. The first cursor is at the crossing
of the rising edge and –.1 V line. The second cursor is at the crossing of the
rising edge and the .5 V line. Use the horizontal MAG for greater accuracy
when adjusting the cursors.
6. The indicated nt time value is the standard 20 – 80% rise time measurement.
>100mV/DIV
OVERLAY
nT
.8nS
0.5nS/DIV
1 kHz
.8
.7
.6
.5
.4
.3
.2
.1
100%
50%
–.1
–.2
–.3
Figure 3–21: Timing Cursors alignment for measuring 20–80% rise time
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Calculating Actual Rise Time. The waveform monitor Eye display has a bandwidth
of 450 MHz which equates to a 20 – 80% rise time of 500 ps. Consider this finite
rise time when you measure the displayed rise time. You can calculate the actual
rise time of the source being measured using the following formula:
TR(source)
=
(TR(measured))2–(0.5ns)2
Ǹ
T
R(source) = the actual 20 – 80% rise time of the source (in ns);
TR(measured) = the 20 – 80% rise time measured on the waveform monitor (in ns)
Table 3–1 lists actual rise times for a number of rise time values measured with
the waveform monitor.
Table 3–1: List of measured and actual rise times for the
waveform monitor
20–80% rise time measured
Actual 20–80% rise time
400 ps
640 ps
710 ps
780 ps
860 ps
900 ps
940 ps
1.0 ns
1.1 ns
1.2 ns
1.3 ns
1.4 ns
1.5 ns
1.6 ns
500 ps
600 ps
700 ps
750 ps
800 ps
900 ps
1.0 ns
1.1 ns
1.2 ns
1.3 ns
1.4 ns
1.5 ns
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Measuring Jitter. The Eye display in Overlaid mode provides a quick way to
measure timing jitter. The WFM 601M waveform monitor also provides an
automated Jitter measurement described on page 3–37.
Timing jitter is the deviation of signal transitions compared to those of a
reference clock. Ideally, all data bit transitions occur at equal intervals. In real
systems, factors such as noise, pulse distortion, and variations in bit patterns
cause timing jitter. Jitter results in Eye closure along the time axis, narrowing the
window in which the data values can be accurately determined. Data errors result
when the Eye becomes too narrow.
Jitter is characterized by both its magnitude and frequency. Signal transitions
deviate from their ideal position by a peak amount and at one or more frequen-
cies, depending on the sources. The frequency of the jitter is important in
determining its effect on the system. Typically, only high frequency jitter affects
data recovery. But low frequency jitter can affect time-critical operations such as
signal multiplexing and D/A conversion.
The waveform monitor provides three bandwidth filters: 10 Hz, 100 Hz, and
1 kHz. These filters only show jitter terms above the selected filter frequency.
For example, with 1 kHz selected, 50 Hz jitter is heavily attenuated while 10 kHz
jitter appears unattenuated.
To measure timing jitter with the waveform monitor, perform the following steps:
1. Perform the initial settings for Eye measurements described on page 3–22.
2. Choose the OVERLAY display mode (located in the EYE PATTERN
CONFIGure menu). In this mode, each of the ten bits of a scrambled serial
word are overlaid in the same location, showing peak jitter at each eye
crossing.
3. Select the appropriate BW Limit filter. Take two measurements: one with the
10 Hz filter, showing total broadband jitter, and one with the 1 kHz filter,
which removes the low-frequency jitter.
4. Enable the Timing Cursors.
5. Position the cursors to measure the Eye zero-crossing point.
6. Set Gain to X5 for better vertical resolution; use SWEEP MAG for better
horizontal resolution.
Suggested limits for jitter are 740 ps p-p over one horizontal line, measured with
the 1 kHz BW Limit filter. If composite D/A conversion is planned, use the
10 Hz BW Limit filter and the same 740 ps p-p limit.
To date, many of the jitter problems in systems have been the result of genlock-
ing clocks to other references such as the horizontal synchronization pulse.
Reference jitter transferred by genlocks into a serial system is typically between
20 and several hundred hertz. Also, the phase detection process used by the
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genlock can add noise, which results in jitter in the 10 Hz to 1 kHz range. By
using the appropriate BW Limit filter, genlock jitter can be included or rejected
from a jitter measurement.
Observing Word Correlated Behavior. The Eye Pattern display in 10-Eye mode
allows you to analyze word correlated jitter. When video is serialized, a 270 MHz
serial clock is derived from the 27 MHz rate parallel word clock. Often there is
slight phase modulation of the serial clock between the transitions of the parallel
clock producing jitter at data-bit transitions. This jitter is not random; it is
correlated to the parallel word rate. Also, the video pattern applied to the
serializer changes at a 27 MHz rate or at an integer fraction of this rate. Any
video pattern related effects in the serial system typically appear at fixed data-bit
locations with respect to the parallel word.
In the Eye display10-EYE mode, the trigger is on the parallel word boundaries,
with 10 Eyes shown per sweep. Parallel word and tv-line correlated behavior can
be seen in this mode. If a serial system has a disturbance that appears related to
video patterns, either word or tv-line, use the 10-EYE mode in either EYE or EQ
EYE to analyze the problem. Use the Line Select function to place the area of
interest in the Eye pattern display.
Filter Menu
The Filter menu provides selection of input signal filters for the Waveform and
Parade display modes. The three available filters are FLAT (unfiltered), LPASS
(1 MHz low pass filter), and the DIFF (differentiated steps filter).
Pressing CLEAR MENU turns off the filter selection readout. To turn off the
Filter selection and leave the Filter menu, press the FILTER button (press the
button twice if the Filter menu is not displayed). Leaving the FILTER menu
returns the monitor to the unfiltered (FLAT) setting.
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Gain Menu
The GAIN menu allows you to expand the display vertically by set levels or to
vary it continuously. The expanded waveform lets you inspect a waveform
feature or more precisely position a cursor for a measurement.
Press the GAIN MENU button to access the Gain menu. Use the fixed bezel
buttons to select from the gain settings of X1, X5, X10, and Variable gain. Gain
is useful in all display modes except PICTURE mode. In Vector displays,
variable gain changes both horizontal and vertical gain equally. Lightning and
Diamond displays have both horizontal and vertical variable gain.
CLEAR MENU turns off all of the menu readout, except the VAR GAIN label.
Variable gain remains active as long as the front-panel GAIN indicator is lit.
To turn Gain off, press the GAIN button once (twice if the Gain menu is not
visible). When you quit the Gain menu, Variable gain returns to the calibrated
setting and Vertical gain returns to X1.
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Gamut Displays
The waveform monitor features two types of gamut displays. The Diamond
display checks video signals for proper RGB gamut. The Arrowhead display
checks composite-coded video signals. Both gamut, or signal limit, displays can
trigger an alarm when the input signal exceeds a gamut limit.
Press the VECTOR/GAMUT button to select GAMUT. Use the bottom bezel
button to select either the Diamond or Arrowhead display mode. This selection
may not be visible when other MENU functions, such as GAIN, are active. Press
the CLEAR SCREEN button to remove other function menus.
Diamond Display
The Diamond display is very effective at showing the relationship between the R,
G, and B signal video signals. The waveform monitor converts the Y, Pb, and Pr
components recovered from the serial signal to R, G, and B to form the Diamond
display. Figure 3–22 shows how the Diamond plot is developed.
Ultimately all color video signals are coded as RGB for display on a picture
monitor. To predictably display all three components, they must lie between peak
white, 700 mV, and black, 0 V. Picture monitors handle excursions outside the
standard range (gamut) in different ways.
+700 mV
Legal G and B space
G
B
R
Green
Green
0 V
0 V
Blue
Red
+700 mV
+700 mV
G
Legal G and R space
+700 mV
X–Y plot
Diamond plot
Figure 3–22: Construction of the Diamond display
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Checking RGB Gamut. For a signal to be in gamut, all signal vectors must lie
within the G-B and G-R diamonds. Conversely, if a vector extends outside the
diamond, it is out of gamut. The direction of an excursion out of gamut indicates
which signal is excessive. Errors in green amplitude affect both diamonds
equally, while blue amplitude errors affect only the top diamond and red errors
affect only the bottom diamond. You can set an alarm to indicate when the signal
exceeds the RGB gamut. For information on setting the gamut alarm, refer to
Gamut Alarms on page 3–33.
The intensity of a vector indicates its duration. A momentary out-of-gamut
condition appears as a faint trace. Long duration violations show as a bright
trace. Figure 3–23 gives some sample out-of-gamut signals on the Diamond
display.
On the Diamond Display, monochrome signals appear as vertical lines. Nonlinear
component processing, such as from a gamma corrector that alters white balance,
can cause deviations along the vertical axis.
As with the lightning display, bending of the transitions indicates timing delays.
When a color bar signal is applied, the vertical axis becomes an indicator of
delay errors.
Example A:
R – Ok
G > 700 mV
B – Ok
Example B:
R – Ok
G – Ok
Example C:
R – Ok
G – Ok, 350 mV
B < 0 mV
B > 700 mV
Figure 3–23: Out-of-gamut signals on a Diamond display
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Arrowhead Gamut
The Arrowhead gamut display plots luminance (Y) against chrominance (C) to
check if the composite signal adheres to standard gamut. Figure 3–24 shows
NTSC and PAL Arrowhead displays (75% Color bars) and indicates the values of
the graticule lines. The arrow-head shape of the graticule results from overlaying
the standard limits for luminance and luminance plus peak chrominance.
NTSC display
100 IRE
120 IRE
131 IRE
NTSC
120 IRE
Current alarm
level setting
Alarm level
cursor
Y Ampl
Y
–40 IRE
| C |
C Ampl
PAL display
700 mV
950 mV
PAL
700 mV
Current alarm
level setting
Alarm level
cursor
Y Ampl
Y
–300 mV
| C |
C Ampl
Figure 3–24: NTSC and PAL Arrowhead gamut displays
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Signals exceeding the luminance amplitude gamut extend above the top
horizontal limit (top electronic graticule line). Signals exceeding the luminance
plus peak chrominance amplitude gamut extend beyond the upper and lower
diagonal limits. The bottom horizontal line shows the minimum allowed
luminance level of 7.5 IRE for NTSC and 0 mV for PAL. See Figure 3–24.
Graticule Format. The electronic graticule is different for PAL and NTSC formats.
Use the CONFIG GAMUT menu to select the Limit Format. The AUTO
selection in the Gamut Configure menu determines the correct graticule from
your input signal. A field rate of 60 Hz indicates NTSC and 50 Hz indicates PAL.
NTSC and PAL Limit Cursors. The alarm limit cursor sets the upper amplitude
point at which an alarm is triggered. In Figure 3–24, the NTSC limit cursor is set
to 120 IRE, as indicated at the upper right of the Arrowhead graticule. Set the
NTSC limit cursor to 100, 110, 120, or 131 IRE to fit your operating practices.
Likewise set the PAL limit cursor to 700 mV or 950 mV. Use the CONFIG
GAMUT menu to set the gamut level.
For information on setting the gamut alarm, refer to Gamut Alarms on
page 3–33.
Checking Composite Gamut. The Arrowhead display provides an automated
check on adherence to RGB or composite gamut standards with the Alarm
feature discussed on page 3–33. To perform an automated gamut check, enable
the alarm and set the level. The automated check alerts you whenever the signal
exceeds the set limit.
Another useful Arrowhead function is a measure of how well the active video
signal is using the dynamic range of video channel. A properly adjusted signal
should be centered in the arrowhead graticule and have transitions that approach
all the limits.
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Gamut Alarms
The Gamut display modes can alert you whenever a signal exceeds a selected
limit. You can set alarm limits for both the Diamond RGB display and Arrow-
head composite display. The alarm can take the form of an alarm message in the
lower left corner of the CRT or a flashing of the MON OUT signal.
To set either the RGB or composite alarm, follow these steps:
1. Press the CONFIG button and select the GAMUT menu.
2. Select the type of GAMUT CHECK from these choices:
H
H
CMPST (composite) for the Arrowhead display
RGB for the Diamond display. RGB mode checks the R, G, and B
signals for transitions below 0 mV and above 700 mV.
H
BOTH enables RGB and CMPST gamut checks.
3. Select the type of ALARM DISP (display) you want from:
H
H
SCREEN places an error message at the lower left of the CRT.
PIX MON flashes the analog output monitor signal in the area that
exceeds the limits.
H
BOTH enables both SCREEN and PIX MON alarm displays.
4. Set the adjustable limit cursor to 100, 110, 120, or 131 IRE for NTSC or
700 mV or 950 mV for PAL.
When an alarm condition occurs, a message appears or the monitor flashes for at
least one second. In addition, pin 16 of the Remote rear panel connector is pulsed
low. Refer to Remote Connector discussion on page B–2 for more information.
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Graticule Measurements
The waveform monitor provides an internal etched graticule for waveform
measurements. The internal graticule scales are on the same plane as the CRT
phosphor to reduce parallax errors. You can adjust the graticule and trace
illumination in the CRT menu for viewing or photographing the display.
Figure 3–25 shows the etched graticule.
Upper limit for 75% color diff signals
Center line for 75% and 100%
color diff signals
Lower limit for 75% color diff signals
0 V horizontal reference
mV scale
Figure 3–25: Waveform measurement graticule
Vertical Scale
This etched scale facilitates direct Waveform and Parade measurements. The
vertical scale is marked in millivolts (mV) and extends from –300 mV to
+800 mV in 100 mV increments.
There are three dashed lines on the graticule used to measure the color difference
signals, Pb and Pr. The line at 50% amplitude is the center line for the color
difference signal measurements. The lines at 90 mV and 610 mV correspond to
the peak excursions for 75% color difference signals. 100% color difference
signals extend from the baseline (0 V) to 700 mV, centered on the 50% graticule
line.
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K-Factor Graticule. A special graticule located at the top of the etched graticule
allows measurement of K-Factor line-time distortion. Figure 3–26 shows the
special graticule and how to align a 2T Bar waveform to measure time-line
distortion.
The graticule does not include the first and last 1 ms of the bar where short-time
distortions (ringing, overshoot, undershoot, etc.) occur. The solid outer box
equals a 4% K factor, while the dashed-line inner box equals a 2% K factor.
K-factor
graticule
Waveform
alignment
points
Figure 3–26: Graticule for K-factor measurements
To measure the K-factor distortion follow these steps:
1. Apply a 700 mV 2T bar signal with a 26 ms duration bar to the active Serial
input.
2. Adjust the waveform so its bottom is on the 0 V line and its top is on the
700 mV line. If necessary, adjust the Variable Gain in the GAIN menu so the
waveform spans the 0 V to 700 mV lines. Note the rising and falling edges of
the waveform must align with the marks on the 50% line.
3. After initial alignment, measure the largest deviation of the bar top (tilt or
rounding) using the K–factor graticule. You can expand the waveform by
setting Gain to X5. The K factor graticule lines then measure 0.8% and 0.4%
K factor.
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2T Pulse to Bar. 2T pulse-to-bar measurements are made using the solid and
dashed lines located to the left of the K-Factor graticule. Setup is the same as for
K-Factor measurement. The 2T pulse-to-bar graticule lines are scaled according
to the following formula:
1
and
1
(1–4K)
(1+4K)
Where:
K = 0.02 for 2% K Factor (using the dashed lines)
or
K = 0.04 for 4% K Factor (using the solid lines)
Set Gain to X5 to increase the resolution to 0.4% and 0.8%.
Horizontal Scale
The horizontal reference line (0 V) is also referred to as the base line, 0 mV,
blanking level, and black level. The reference line has 12 major divisions. Main
marks at the 1st, 6th, and 11th divisions provide for timing and linearity
measurements, which should occur within the center ten divisions. When the
Sweep button is set to 1-Line, each major division represents 5 ms, and when set
to 2-Line sweep, each major division represents 10 ms. The current deflection
factor is displayed in the upper-right corner of the CRT.
Pressing the MAG button magnifies the sweep so the scale on the baseline equals
500 ns per major division for 1-Line sweep and 1 ms per major division in 2-Line
sweep. Use the HORIZ POS knob to view the waveform extremes when
magnified.
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Jitter Measurement Display (WFM 601M Only)
The Jitter display mode provides an automatic peak-to-peak measure of time
jitter on the active SER A or B input signal. Selectable high-pass filters allow
you to distinguish between high and low frequency jitter. Figure 3–27 shows an
example of the Jitter display including a sample jitter waveform. The jitter mode
converts any phase modulation to amplitude and plots it against time. An
unfiltered version of the jitter waveform appears on the JITTER OUT BNC
connector on the rear-panel.
Jitter measurements appear in the Jitter measurement box. The left measurement
is Timing or wideband peak-to-peak jitter from 10 Hz to 5 MHz. The right
measurement gives filtered peak-to-peak jitter measured after the high-pass filter.
The selected high-pass filter is indicated above the filtered jitter measurement.
0.1 UI/DIV
2 FIELD
10HZ
High-pass filter
JITTER (P-P)
TIMING
0.16UI
10HZ HPF
0.17UI
Jitter p-p out of
high-pass filter
Wideband p-p
jitter
Jitter waveform
after the
high-pass filter
Figure 3–27: Example of the Jitter display
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Jitter Demodulation
The Jitter measurement uses a demodulator method to determine signal jitter. The
serial clock is recovered from the input signal and multiplied (demodulated)
against a very stable oscillator, which translates any phase modulation (jitter) into
a DC value. The resulting DC values plotted against time is proportional to jitter
in the serial signal. This jitter waveform is passed through a high-pass filter and
applied to a peak detector. The peak detector measurement is presented in the
jitter measurement box seen in Figure 3–27. The demodulator can detect jitter up
to 5 MHz.
Jitter Measurement
Configuration
The Jitter measurement lets you pick one of four high-pass filters and set the
readout units. Press the CONFIG MENU button and select JITTER. Use the
JITTER HPF bezel button to select from the available filters: 10 Hz, 1 kHz,
10 kHz, and 100 kHz. The jitter readout displays in seconds (SEC) or unit
intervals (UI). Use the READOUT bezel button select the unit type or turn off
the readout.
You can display the jitter waveform using any of the LINE/FIELD sweep
selections. You can also use the Line Select function to view an individual line.
Vertical Gain and horizontal MAG are available to enhance your view of the
jitter waveform. Use the Voltage Cursors to measure specific parts of the jitter
waveform. The Jitter Config menu READOUT selection determines the units for
the Voltage Cursors.
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Line Select
The Line Select menu lets you select the part of the extracted video signal to
display and measure. You can select one line, 15 lines, or a single sample on any
line in any field. The selected part is indicated on the MON OUT signals as
highlighted video.
A readout in the upper left of the CRT indicates the currently selected field, line,
and sample. For example, the display F1:22, SMP1441 means that field 1, line 22
and sample 1441 is selected. In 15 H mode, starting and ending line numbers are
given. In 525 line standard with field 2 selected, sequential line numbers appear
in parenthesis.
To set the Line Select mode, press the LIN SEL MENU button. The Line Select
menu appears offering control selections. Bezel knobs are assigned to select line
number and sample (in SAMPLE mode).
Field Selection
The bezel buttons FIELD and NEXT FIELD select the field from which the
selected line/sample is taken. Selecting ALL displays the same line number from
both fields in a frame. The “1 of 2” selection lets you choose a line from only one
field in a frame. Press the NEXT FIELD button repeatedly to cycle through the
fields in a frame.
Line or Sample Selection
The second bezel button allows selection of 1H, 15H, and SAMPLE
(WFM 601M only) display modes. In 1H mode, select a single horizontal line
from anywhere in a frame. On the output monitor, the single selected line will be
highlighted. When the selected line is near the top or bottom of the frame, the
output monitor signal shifts to show the vertical sync region.
In the 15H mode you select a range of lines using the bezel knob. On the output
monitor, a band of lines is highlighted. The output monitor signal does not shift
as with the 1H and SAMPLE modes.
In the SAMPLE mode, select a horizontal line and a specific sample on that line.
In the Waveform and Parade Displays, a rectangular marker or “blivit” shows the
selected sample on the waveform. On the output monitor, highlighted horizontal
and vertical lines intersect at the selected sample. In the SAMPLE mode, the
output monitor display shifts to show the sync region when your selection
approaches either end of a line or field. Selections in the sample mode are
correlated across most display modes, such as Digital Waveform, Digital Data,
Parade, and Waveform display. For example, you can align the blivit to the SAV
sample in the Parade mode, then switch to the Digital Waveform mode and see
the SAV value in the data stream.
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A special condition exists in 15H mode when you select the PARADE or
WAVEFORM displays. The first line in the display corresponds with the LIN
SEL readout. The second is from the second line and the third is from the third
line in the sequence. See Figure 3–28. For more information on how line select
affects the Parade mode, refer to page 3–41.
Line 1
Line 2
Line 3
Figure 3–28: Parade display of YPbPr shown in Line Select mode (15H only)
The CLEAR MENU button removes the readout associated with the line
selection, but the line number readout and Line Sel control assignment remain
active on screen. To restore the menu readout, press the LINE SEL menu button
again. To turn off the function press the LINE SEL menu button when the menu
readout is displayed; press LIN SEL twice when the menu is not displayed.
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Multiple Display
Parade Display
The Multiple display allows you to overlay two display modes. When the
Waveform or Parade mode is displayed, you can add either the Vector, Lightning,
or Diamond displays. When you exit the Multiple display, the previous display is
restored.
Display the component signals Y (CH 1), Pb (CH2), and Pr (CH 3) using the
Parade display. You can choose to display one, two, or all three waveforms at
once. Measure the waveforms using the graticule or Cursors.
Gain and Sweep selections operate as in the Waveform display. Gain selections
are available to expand the waveforms vertically to aid in measurement. The
LINE/FIELD button alternates between one line and one field. The MAG
selection expands the horizontal scale, while still allowing you to take Cursor
timing measurements.
Figure 3–29: Parade display of Y and Pb signals
When Line Select is set to 1H and Ref is internal, the CH 1, CH 2, and CH 3
waveforms are all from the same line. When Line Select is set to 15H or Ref is
external, CH 1 is from line n, CH 2 is from line n+1, and CH 3 is from line n+2.
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Picture Display
The Picture display shows a monochrome version of the video signal carried by
the serial digital input signal. Figure 3–30 shows an example of a color bar
signal. The Picture display lets you verify the signal source. When Line Select is
active, the highlight or “bright-up” of the selected line appears as it would on an
external analog monitor.
.8
.7
.6
.5
.4
.3
.2
.1
100%
50%
–.1
–.2
–.3
Tek
PB
Figure 3–30: Example of the Picture display
To adjust the Picture display, press the CRT MENU button and use the CON-
TRAST and BLACK LEVEL bezel knobs.
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Presets
The Preset menu makes it possible to recall front-panel settings from a list of 10
stored front-panel presets. You can store up to nine front-panel presets at these
locations. The remaining one is factory programmed to help calibrate the
waveform monitor.
Preset Menu
Press the PRESET MENU button to access the list of the 10 presets. The list
appears over a bezel knob below the CRT. Rotating this knob moves the highlight
box up or down the list. Once the desired preset is selected, you can take one of
four actions:
RECALL. Sets the front panel to the stored settings previously stored into that
memory location.
STORE. Wipes out the currently stored settings, in the selected memory location,
and replaces them with the current front–panel settings.
RENAME. Allows you to change the name of the current preset selection using a
set of alpha-numeric characters and symbols.
RECOVER. Returns to the previously selected choice. For example, assume that
Preset 1 was the previous choice and Preset 8 has now been selected but not
recalled. Pressing RECOVER returns to Preset 1.
To restore the Preset menu, press the PRESET menu button again. To turn off the
Recall function, press CLEAR MENU or the PRESET menu button.
Rename Submenu
Use the Preset Rename submenu to rename one of the nine Presets.
1. Rotate the Location bezel knob to select a character to change in the current
name.
2. Rotate the Letter bezel knob to scroll through the list of available characters.
The Location character changes as you scroll through the character list. The
blank character follows the letter Z.
3. When you are done, press the ACCEPT button to lock the selection.
4. Press the RETURN bezel button to return to the PRESET menu.
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Ref Mode
The REF button selects the synchronization reference. The default reference is
the currently selected serial digital input (SER A or B). Press the REF button
once to select the external reference input (EXT REF). The EXT indicator,
located just above the REF button, lights when the external reference is selected.
The EXT REF input is a 75 W loop-through input. The external reference signal
can be a black burst or composite video signal.
Press the REF button again to select the internal synchronization reference and
turn off the EXT indicator.
Serial Status
The Serial format display performs automatic checks on the serial digital signal
and provides descriptive status of the input signal. Two Serial format screens,
STATUS and FORMAT, display information about the serial signal. In addition,
the front-panel EDH indicator lights when the input signal contains valid EDH
information in accordance with the SMPTE RP-165 standard.
Press the SERIAL button (located below the Alarm indicator) to view the Serial
format screens. Figure 3–31 shows the STATUS screen. Press the DISPLAY
bezel button to select either the STATUS, FORMAT, or CABLE screen. V1.X
firmware instruments do not have the CABLE selection. Press the SERIAL
button to exit the Serial format display.
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STATUS Screen
The Status screen presents a signal description, the results of EDH checks, and
the cable length. Figure 3–31 shows an example of the Status screen displaying a
signal with a 525-line rate, 10 bit data, and 16 channels of embedded audio.
Figure 3–32 shows the STATUS screen for firmware V1.X instruments.
SIGNAL PRESENT
525 LINES
10 BITS
AUDIO:
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
FORMAT ERROR
OTHER ANC DATA
STUCK BITS:
--L-L-L-L-
DISPLAY
STATUS
FORMAT
CABLE
FF CRC ERR SEC
STATUS
0
VALID
AP CRC ERR SEC
STATUS
1
VALID
F1 AP CRC VALUE
F2 AP CRC VALUE
CHANGED SINCE RESET
10AB
10AB
YES
0 DAYS
00:02:50
ELAPSED TIME
RESET
Figure 3–31: Serial STATUS display for firmware V2.X
The status screen provides three types of information. The information at the top
describes the type of detected signal including the number of lines, data bits, and
audio channels. The Stuck Bits readout shows the status of each bit in the data
word with the LSB on the right. Three characters indicate the status of each bit:
H
H
H
“–” for bits that change during a field
L indicates bits that stay low
H for bits that stay high
The table on the Status screen contains EDH (SMPTE RP-165) and CRC error
detection results. The elapsed time indicates the sample period for the error
detection readout.
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Features of the Status Screen. The Status screen features operate as follows:
H
Signal Present. Indicates when a valid serial digital signal is detected. When
the serial receiver detects a no-signal condition, the status will read SIGNAL
MISSING.
H
H
H
525/625 Lines. Gives the number of lines in the serial digital signal.
10/8 Bits. Gives the number of data bits in the serial digital signal.
Audio. Gives the number of embedded audio channels detected in the serial
digital signal. When the serial digital signal does not contain audio informa-
tion, the AUDIO readout disappears.
H
Format Error. (WFM 601E and WFM 601M only) Indicates a format error is
present. To see the type of format error, press the DISPLAY bezel button to
select FORMAT.
H
H
Other ANC Data. (WFM 601E and WFM 601M only) Indicates the presence
of ancillary data other than EDH or Audio.
Stuck Bits. (WFM 601E and WFM 601M only) Indicate if any of the 8 or 10
data bits are locked. The LSB is on the right. Active bits are indicated by a
hyphen and locked bits by an L for the low state and H for high.
H
H
FF CRC ERR SEC (full field CRC errored seconds). Provides an EDH
(SMPTE RP-165) measure of asynchronous errored seconds based on CRC
calculated for each field in the video signal.
AP CRC ERR SEC (active picture CRC errored seconds). Provides an EDH
(SMPTE RP-165) measure of asynchronous errored seconds based on CRC
calculated for the active picture part of each video field.
H
H
H
F1 AP CRC VALUE (active picture CRC value). Calculates the AP CRC
value for the active video part of field one.
F2 AP CRC VALUE (active picture CRC value). Calculates the AP CRC
value for the active video part of field two.
Changed Since Reset. Indicates if either the F1 or F2 AP CRC VALUE has
changed since you last reset the timer.
H
H
H
Elapsed Time. Gives the time since you last reset the timer.
Reset. Sets the elapsed time back to zero and clears any detected EDH errors.
Display. (WFM 601E and WFM 601M only) Selects either STATUS,
FORMAT, or CABLE screens.
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Status Screen for V1.X
Firmware
The WFM 601M with V1.X firmware includes cable length and signal strength
readouts in the Status screen as shown in Figure 3–32. The other information in
the STATUS screen is the same as that shown in Figure 3–31.
SIGNAL PRESENT
525 LINES
10 BITS
AUDIO:
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
FORMAT ERROR
OTHER ANC DATA
STUCK BITS:
--L-L-L-L-
DISPLAY
STATUS
FORMAT
FF CRC ERR SEC
STATUS
0
VALID
AP CRC ERR SEC
STATUS
1
VALID
F1 AP CRC VALUE
F2 AP CRC VALUE
CHANGED SINCE RESET
10AB
10AB
YES
CABLE TYPE
BELDEN 8281
BELDEN 1694
BELDEN 1505
0 DAYS
00:02:50
ELAPSED TIME
RESET
SERIAL SIGNAL LEVEL:
0.00 dB
APPROX CABLE LENGTH:
0 METERS
Figure 3–32: Serial STATUS display for firmware V1.X
The V1.X firmware Status screen includes cable measurement features. With
V2.X firmware, these features moved to the DISPLAY CABLE screen. The
V1.X features provide the following information:
H
CABLE TYPE. Select the type of cable connecting the video source to the
waveform monitor. The correct Cable Type is necessary to calculate the
Serial Signal Level and Cable Length.
H
SERIAL SIGNAL LEVEL. Indicates the amplitude of the signal source
relative to the 800 mV standard. The value 0 dB indicates a good 800 mV
signal. A value of –3 dB would indicate a source with 0.707 of the expected
amplitude. To get an accurate measurement, you must select the correct
CABLE TYPE for your installation.
H
APPROXIMATE CABLE LENGTH. Indicates the length of the cable
between the signal source and the waveform monitor. The waveform monitor
calculates the cable length based on the signal power at the input. To get an
accurate measurement, you must select the correct CABLE TYPE for your
installation.
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FORMAT Screen
(WFM 601E and
WFM 601M Only)
The FORMAT screen presents the results of six signal format checks. A given
check reports back either OK or ERROR. The waveform monitor continuously
performs the format checks. The results are not saved or latched; once an error
condition clears, the indicator returns to OK. The FORMAT screen is identical
for V1.X and V2.X firmware except for the CABLE selection for the DISPLAY
bezel button.
SIGNAL PRESENT
525 LINES
10 BITS
DATA RANGE
OK
OK
OK
OK
DISPLAY
STATUS
FORMAT
CABLE
SAV PLACEMENT
LINE LENGTH
FIELD LENGTH
ANC CHECKSUM
ANC PARITY
OK
OK
Figure 3–33: Serial format display showing the FORMAT screen
Features of the Format Screen. The Format screen provide the following
information:
H
H
H
H
H
Data Range. Indicates an error if the reserved values of 000h–003h or
3FCh–3FFh are used incorrectly.
Sav Placement. Indicates an error if SAV is improperly placed with respect to
the preceding EAV.
Line Length. Indicates an error if there are an incorrect number of samples
from one EAV to the next.
Field Length. Indicates an error if there are an incorrect number of lines in a
field.
ANC Parity. Indicates an error if a parity error has occurred in ancillary data.
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H
ANC Checksum. Indicates an error if an ancillary data checksum error has
occurred
CABLE Screen
(WFM 601E and
WFM 601M Only)
The CABLE screen displays signal level and cable length readouts and allows
you to select the cable type used in your installation. See Figure 3–34. This
screen appears only with firmware V2.X and later.
SIGNAL PRESENT
525 LINES
10 BITS
DISPLAY
SOURCE SIGNAL LEVEL:
APPROX CABLE LENGTH:
CABLE LOSS:
100 %
0 METERS
0.00 dB
STATUS
FORMAT
CABLE
CABLE TYPE
BELDEN 8281
BELDEN 1694
BELDEN 1505
Figure 3–34: Serial format display showing the Cable screen
Features of the Cable Screen. The CABLE screen provides the following
information:
H
H
SOURCE SIGNAL LEVEL. Indicates the level of the signal source relative
to the 800 mV standard. To get an accurate measurement, you must select the
correct CABLE TYPE for your installation.
APPROX CABLE LENGTH. Displays the cable length between the signal
source and the waveform monitor. The waveform monitor calculates the
cable length based on the input signal power and the cable type. To get an
accurate measurement, you must select the correct CABLE TYPE for your
installation.
H
CABLE LOSS. Displays the approximate loss of power due to the cable. To
get an accurate measurement, you must select the correct CABLE TYPE for
your installation.
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H
H
DISPLAY. Selects either STATUS, FORMAT, or CABLE screens.
CABLE TYPE. Selects the type of cable connecting the signal source to the
waveform monitor. The Cable Type sets parameters needed to calculate the
Source Signal Level and Approx. Cable Length. Press the CABLE TYPE
bezel button to select the correct cable type for your installation.
Measuring Error Rate
The waveform monitor provides two methods for measuring data transmission
errors in serial video systems. The first method uses the Error Detection and
Handling (EDH) system which documented by the SMPTE RP165 standard. The
second uses a fixed pattern test signal and the Active Picture CRC values.
Error Rate Measurement with EDH. The EDH system computes a Cyclic Redun-
dancy Code (CRC) for each field of video and includes it with the video in an
ancillary data field. At the EDH receiver, a CRC is calculated for the received
field of video and compared against the transmitted CRC. If they do not match,
then one or more errors have occurred during that video field.
To measure a serial digital link, the source must insert EDH information. Serial
repeaters or processing equipment between the source and the destination
receiver must pass ancillary data on the lines where the EDH is inserted. For 525
line standards, EDH data is on lines 9 and 272 and, for 625 line standards, on
lines 5 and 318. If your source can not insert EDH, use an alternative source,
such as the Tektronix TSG-422 Option 1S Generator. This substitution is
effective because sources must generate standard waveforms.
Connect the waveform monitor to the regenerated serial output of the destination
receiver as depicted in Figure 3–35.
Waveform Monitor
Serial source
(rear panel)
(with EDH)
Serial receiver
75 W terminator
SER A
Loop-through input
Regenerated
serial output
Output
Figure 3–35: Connection for point-to-point error measurements
After making the connections, ensure that the serial source is supplying an EDH
compliant signal. Check that the waveform monitor EDH DET indicator is on.
Activate the SERIAL STATUS screen. In the error table, the number of program
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seconds that contained errors (errored seconds) is indicated. An elapsed time
indicator gives the total time since the error counter display was last reset. Use
the elapsed time to calculate statistics such as percentage errored seconds. Press
the RESET bezel button to set both the errored seconds readouts and the elapsed
time counter to zero.
Each ERR SEC readout has a STATUS field just below it. The status can be
either Valid, Invalid, or Missing. Valid means a transmitted CRC is available to
check for errors. Invalid means some EDH information is present, but the CRC
used to check for errors is not available. Missing means that no EDH information
is present. In this case, the EDH DET indicator is off. To check the error rate, the
EDH CRC being used – either FF (full field) or AP (active picture) – must be
Valid. Note that if a CRC becomes Invalid while the error rate is being deter-
mined, the ERR SEC readout will freeze. Errors are not detected while the CRC
is Invalid.
This measurement method is possible because the serial receiver under test
creates the reclocked serial output after it has equalized the input signal,
recovered the clock, and latched the data. Any detection errors affecting the
receiver also appear in the regenerated serial output and are detected by the
waveform monitor.
The ability to measure a receiver error rate by monitoring its regenerated output
is very useful in an operating system. Although many types of video equipment
do not include EDH error detection, most have regenerated (or reclocked) serial
outputs. This technique can bring error rate measurement capability to virtually
any point in a facility. Strategic placement of waveform monitors can help track
the performance of an operating video system. Similarly, you can use a single
EDH monitor to proof an entire digital chain by moving it from one regenerated
output to the next.
Error Rate Measurement with AP CRC. The waveform monitor calculates CRC
check-words for the active picture area of each video field. The two CRC values
are displayed on the SERIAL STATUS screen: one for field 1 (F1) and one for
field 2 (F2). With a fixed-pattern test signal, these CRCs should have constant
values. Hence, any change in the CRC indicates an error. By passing a static test
signal through system equipment, you can look for errors introduced by the
system equipment.
Connect the waveform monitor as shown in Figure 3–35. The source does not
need EDH, but it must be a fixed pattern signal (repeating every two fields).
Display the SERIAL STATUS screen. Press the RESET key and check that the
CHANGE SINCE RESET flag reads No. If an error occurs, a CRC value will
briefly change values then resume the fixed pattern value. Even a very brief
change sets the CHANGED SINCE RESET flag to Yes. The elapsed time
counter indicates the length of time since the flag was last reset to No. The flag
indicates only that one or more errors occurred.
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Comparison of the Two Methods. Of the two methods described above, the EDH
system is the most powerful. First, it works with any video program material,
since the source-end CRC is calculated on a field-by-field basis. It does not
matter if the source is a fixed pattern test signal or moving pictures. Thus, EDH
can monitor error rate while your facility is in service. Second, the error
information gathered by the waveform monitor is the most comprehensive when
using EDH, with errored seconds readouts for both the active picture and full
field. The big disadvantage of EDH is that it requires calculation and insertion of
the CRC at the source. At present, not many equipment vendors support EDH.
The AP CRC Value method does not require any special signal insertion at the
source, and therefore gets around the problem of poor support for the EDH
system. But its limitation is that it works only with fixed pattern signals, such as
those from a test signal generator. This precludes its use for monitoring operating
video systems. Also, the AP CRC Value method only indicates if there were zero
or more errors.
Sweep
The SWEEP buttons set the sweep rate (time/div) for the horizontal scale and
enable horizontal magnification. Press the LINE/FIELD button repeatedly to step
through the following sweep modes:
H
H
H
H
1 Line. One horizontal line is displayed. Use Line Select function to choose
one line out or a Field or Frame. The horizontal scale is 5 ms/div.
2 Line. Two consecutive horizontal lines are displayed. The horizontal scale
is 10 ms/div.
1 Field. All lines for one video field are displayed. No horizontal scaling is
given.
2 Field. All lines for two video fields are displayed. No horizontal scaling is
given.
Use the LIN SEL MENU to choose the line or lines to display.
The MAG button provides a magnified view of the horizontal scale. In the
magnified mode, the waveform extends off both sides of the CRT. Use the
HORIZ POS bezel knob to pan left and right on the waveform. Timing Cursors
operate correctly in the magnified mode, though one or both may be off screen
during measurement.
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Vector Display Modes
The waveform monitor provides two types of vector displays. One is a conven-
tional Vector display that plots the two color difference signals, Pb and Pr,
against each other. The Vector display is useful for checking the chrominance
phase and amplitude. The second vector display is the Lightning display. The
Lightning display plots luminance (Y) versus Pb on the top and Y versus Pr on
the bottom. This display is useful for evaluating component signal amplitude and
timing.
Press the VECTOR/GAMUT button to select a Vector display. Press the lower
bezel button to select VECTOR or LIGHTNING modes.
Both vector modes can operate with 75% or 100% Color Bar signals. Press the
CONFIG MENU button and select the WFM/VEC menu to select the 75% or
100% graticule to match your test signal.
Vector Display
The Vector display plots the two color difference signals, Pb and Pr, against each
other, similar to a composite vectorscope. Figure 3–36 shows how the color
difference signals are plotted to create the Vector display. Figure 3–37 shows the
actual polar graticule with trace lines indicating how a trace would appear on the
graticule.
The polar display permits measurements of hue in terms of the relative phase of
the chrominance signal. Amplitude of chrominance is the displacement from
center (radial dimension of amplitude) towards the color point.
R
M
G
Y
L
Pr signal
B
G
C
Y
Pb signal
Figure 3–36: Vector display relationship of the Pr and Pb signals
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Vector Graticule. The waveform monitor Vector graticule, shown in Figure 3–37,
operates as a component vectorscope. Each chrominance vector of a Color Bar
signal terminates as a bright dot in a target. The distance from the center box to
the target box corresponds to the amplitude for the color being measured. The dot
brightness corresponds to the duration of the color bar. The dimension of each
target box represents 2% (±14 mV) of a 700 mV amplitude. The dashed–vector
line labeled I indicates the saturation or amplitude of flesh tones. The displayed
amplitude allows comparison to the Color Bar targets.
@ 525/2:1
10mS/DIV
R
M
G
I
Y
L
B
G
C
Y
Figure 3–37: Vector display graticule
Phase and Amplitude Measurements. With the Vector display, you can check the
encoder accuracy for both phase and amplitude errors. When taking measure-
ments make certain your source signal amplitude matches the Vector graticule.
For example, if the source is a 75% Color Bar signal, then choose the 75%
graticule in the WFM/VEC Configuration menu. The current graticule selection
appears beside the graticule.
Composite signals include a sample of the subcarrier (burst) with each line of
video to synchronize the decoding of color information. The Vector display is
based on the accuracy of the color burst sample. Any magnitude or phase
variance in the color bar vectors is measured by the distance of the vector dots
from the appropriate targets.
3–54
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Vector Timing Measurements. In the composite domain, the transitions between
the vector end points display timing differences. But, because these timing
differences include the delay in the decoder output filtering, you can usually
ignore them. In the component domain there is no decoding required and
therefore the color bar transitions contain useful timing information. These
timing differences appear as looping or bowing of the transitions. It is possible to
measure the amount of bowing and convert the results to a coarse delay value. If
the transition looping appears large, use the Lightning display to measure the
interchannel delay.
Lightning Display
The Lightning display plots the color difference signals, Pb and Pr, against the
luminance (Y) signal. In the top half of the Lightning display, Pb is plotted
against Y, and on the bottom half, Pr is plotted against inverted Y. The vertical
center is the 0 V or black-clamp point. Figure 3–38 shows how the waveform
monitor plots the Lightning display from the three component signals.
P (B-Y)
B
White
Black
White
+ Luminance (Y)
Y
L
CY
G
M
R
Y signal
B
R
Clamp point
0V
B
G
M
CY
Y
L
– Luminance (Y)
P (R-Y) signal
r
Figure 3–38: Construction of the Lightning display
3–55
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Reference
Figure 3–39 shows the Lightning graticule with a trace. The target boxes at the
end of each vector indicate a tolerance of ±14 mV. The closely spaced small dots
provide a guide for checking transitions. These dots are spaced 40 ns apart while
the widely spaced dots represent 80 ns. The electronic graticule eliminates the
effects of CRT nonlinearity.
40 ns
@ 525/2:1
Y
L
C
G
M
R
B
B
R
M
G
C
VECTOR
LIGHTNING
Y
L
80 ns
Figure 3–39: Lightning graticule showing interchannel timing errors
The three signals are back-porch clamped and identically low-pass filtered to
provide a common point and identical delay through the system. The color
difference signals are line alternated, and the luminance signal is inverted on
alternate lines.
The information available from the Lightning display is color difference signal
accuracy (horizontal displacement of either half of the display), luminance gain
(vertical displacement between the black and white levels), timing delay between
either color difference signal and luminance (bending of the green/magenta
transitions). Figure 3–39 shows the graticule and the measurement targets and
timing delay scales.
3–56
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Luminance Gain Measurement. The signal is driven along the vertical axis above
and below the center box by the luminance signal. The lower half is driven down
from the center. The luminance gain is correct when the center dot (clamped
black level) is centered in the target box and the positive and negative excursions
end at the top and bottom of the graticule. Perfect monochrome signals appear as
a thin vertical line. Any deviation or bending off the center line indicates a color
variation from the monochrome setup of the display monitor. Luminance gain
alone can be measured more accurately in either the Waveform or Parade display
modes.
Interchannel Timing Measurement. The scale (sequence of dots) between the green
and magenta targets provides a way to check interchannel timing (CH-2 to CH-1
and CH-3 to CH-1) or signal delay. If the color difference signal is not coincident
with luminance, the transitions between color dots will bend. The amount of this
bending represents the relative signal delay between luminance and the color
difference signal. The upper half of the display measures the Pb-to-Y timing,
while the bottom half measures the Pr-to-Y Timing. If the transition bends in
toward the vertical center or black region, the color difference signal is delayed
with respect to luminance. If the transition bends out toward white, the color
difference signal is leading the luminance signal.
Pr and Pb Gain Measurement. The horizontal deflection of the top half of the
display is an indication of the Pb gain and the lower half indicates the Pr gain. If
the color bar signal dots are within the horizontal dimensions of the appropriate
graticule targets, the Pb and Pr gains are within 2% of the correct amplitude.
Since the vertical and horizontal dimensions of the graticule target boxes indicate
2% luminance and color difference gain errors, respectively, you can evaluate
each color bar for encoding accuracy with these limits. The Lightning display
shows the relative level or coding accuracy for Y, Pb, and Pr for each of the eight
primary colors much better than the Parade display mode.
3–57
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Video In
The VIDEO IN selections enable Serial input A or B and determine which
component signals are displayed. The SERIAL A and B button corresponds to
the SER A and B loop-through inputs on the rear panel. Only one input can be
active at a time.
The CH 1 button displays the Y or luminance signal. The CH 2 button displays
the Pb or B-Y chrominance signal. The CH 3 button displays the Pr or R-Y
chrominance signal. In the WFM AS RGB mode, CH 1 displays R, CH 2
displays G, and CH 3 displays B.
Waveform Display
The Waveform display mode displays voltage versus time for the selected video
input (A or B). You can display the three input video channels singly or in
combination. When you display more than one channel of the input signal, the
channel traces are overlaid.
The waveform monitor uses a line-store memory in 1H and Sample Line Select
modes which allow it to display all video channels from the same video line. This
feature lets you view and measure concurrent data for all three channels.
Line Select
The Line Select menu offers two or three modes depending on your model:
H
1H. Shows one line of a field or frame. A horizontal line on the output
monitor signal marks the selected line.
H
H
15H. Displays 15 successive lines.
Sample (WFM 601M only). Picks a particular sample in a horizontal line and
indicates it with a visible marker on the line.
Cursors
Gain
Cursors are available to measure time and amplitude differences.
Horizontal and vertical magnification are available by pressing the MAG and
GAIN buttons. Magnification is also valid during cursor measurements.
3–58
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Appendices
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Appendix A: Specifications
Table A–1 lists the Electrical specifications for the WFM 601A, WFM 601E, and
WFM 601M Serial Digital Component Waveform Monitors. Performance
Requirements are generally quantitative and can be tested by the Performance
Verification Procedure in the Service Manual. Reference information describes
useful operating parameters that have typical values. These parameters are not
directly checked in the Performance Verification Procedure. Table A–8 lists the
EMC compliance specifications.
The Performance Requirements listed in the electrical specification portion of
these specifications apply over an ambient temperature range of 0° C to +40° C.
The rated accuracies are valid when the instrument is calibrated at an ambient
temperature range of +20° C to +30° C, after a warm-up time of 20 minutes.
Table A–1: Electrical specifications
Characteristic
Performance requirement
Reference information
Waveform Vertical Deflection
Deflection Factor
For digital input: 700 mV digital
input = 700 mV $2% screen
display, any magnifier setting.
RGB on-screen accuracy $3%.
Variable Gain Range
Frequency Response
0.2X to 1.4X.
Luminance channel (Y), to
5.0 MHz $2%;
Typically $1% to 5.75 MHz luminance (Y)
channel, and $1% to 2.75 MHz for the color
Color difference channels (P and difference (P and P ) channels.
B
B
R
P ) to 2.5 MHz $2%
R
Transient Response
Preshoot v1%.
Overshoot v1%.
Ringing v1%.
Pulse-to-bar ratio 0.99:1 to 1.01:1
Field Rate Tilt
v1%.
Line Rate Tilt
v1%.
Offscreen Recovery
1% variation in baseline of a 5 MHz modulated
pulse when positioned anywhere on screen.
X1, X5, or X10 with any variable gain setting.
Voltage Cursor Accuracy
$0.5% over 20–30° C, $1% over
rated temperature range.
Differentiated Step Filter
Low Pass Filter
Gain
Amplitude of pulses v1% variation.
1 $ 1%.
Response
v 3 dB attenuation at 1 MHz, w 40 dB attenua-
tion at 4 MHz.
A–1
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Performance requirement
Reference information
Serial Digital Video Interface
(SER A and SER B inputs)
Format
270 Mbit/s component. Complies with SMPTE
259M and CCIR 656.
Input Type
Input Level
Passive loop-through, 75 W compensated.
800 mV peak-to-peak $10%. Input voltages
outside this range might cause reduced receiver
performance.
Return Loss
Power on
w25 dB 1–270 MHz, channels on or off.
w15 dB 1–270 MHz.
v1%.
Power off
Insertion Loss
Transmission Bandwidth
50 kHz – 300 MHz $1.0 dB.
–3 dB at not less than 500 MHz.
Loop-through Input Isolation
w50 dB to 300 MHz.
Serial Receiver Equalization Range
Proper operation with 19 dB loss at
135 MHz using coaxial cable
having 1/√F loss characteristics.
800 mV launch amplitude and 200
meters (655 feet) of Belden 8281
coaxial cable.
Serial Video Output (follows SER A/B
channel selection)
Format
270 Mbit/s component; complies with SMPTE 259M
and CCIR 656.
Output Level
Return Loss
800 mV p-p $10% into 75 W load Internal adjustment can change output to less than
600 mV and greater than 1000 mV.
w15 dB 1–270 MHz
Eye Pattern Display
(WFM 601E and WFM 601M Only)
Type
Equivalent time sampler
Bandwidth
50 kHz to 450 MHz: –3 dB to
+1 dB
Low frequency –3 dB point is 500 Hz.
Rise Time
500 ps (20-80%), 775 ps (10-90%)
< 10%, 800 mV step
Aberrations
Time Base Jitter
< 200 ps peak-to-peak
A–2
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Jitter Attenuation
10 Hz HPF
Performance requirement
Reference information
< 10% for frequencies > 20 Hz. –3 dB at
approximately 10 Hz.
100 Hz HPF
1 kHz HPF
< 10% for frequencies > 300 Hz. –3 dB at
approximately 100 Hz.
< 10% for frequencies > 3 kHz. –3 dB at
approximately 1 kHz.
Up to 3 dB jitter gain from 2–4 kHz.
Display Modes
Overlay
Overlays bits 0-9 of a serial word to form each Eye
opening.
10-Eye
Deflection Factor
Vertical
Parades bits 0-9 in a 10-Eye display.
800 mV $ 5% with an 800 mV p-p
input
Horizontal
Overlay Mode
10-Eye Mode
Mag On
1 ns/div $ 3%
3 ns/div $ 3%
500 ps/div $ 3%
Jitter Display (WFM 601M Only)
Type
Demodulated recovered clock.
Digital Readout
Accuracy
0.05 UI $10% of reading.
Dynamic Range
Alignment Jitter
Timing Jitter
2.4 UI p-p
9.0 UI p-p
Resolution
Alignment Jitter
Timing Jitter
0.02 UI
0.1 UI
–3 dB Bandwidth
Alignment Jitter Bandwidth
selection
10 Hz to 5 MHz
1 kHz to 5 MHz
10 kHz to 5 MHz
100 kHz to 5 MHz
Timing JItter
Jitter Waveform
Accuracy
10 Hz to 5 MHz
$ 10%
A–3
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Dynamic Range
Deflection Factor
Horizontal
Performance requirement
Reference information
10 UI p-p
Four modes available:
1 Line, 2 Line
1 Field, 2 Field
Vertical
X1
X5
1 UI/div $5%
0.2 UI/div $10%
0.1 UI/div $20%
X10
–3 dB Bandwidths
Bandwidth Selection
10 Hz to 5 MHz
1 kHz to 5 MHz
10 kHz to 5 MHz
100 kHz to 5 MHz
Jitter Output (WFM 601M Only)
120 mV/UI $10% into 75 W load.
Signal Level & Cable Length Detector
(WFM 601E and WFM 601M Only)
Cable Length
Accuracy
10 meters $10% of reading (Belden 8281 cable).
5 meters
Resolution
Dynamic Range
Source Signal Level
Accuracy
0 to 400 meters (Belden 8281 cable)
$0.5 dB for cable lengths from 0–100 meters
(Belden 8281)
Resolution
Dynamic Range
Cable Types
0.25 dB
$3 dB
Supported cable types:
Belden 8281
Belden 1694A
Belden 1505A
Video Error Detection
Type
Active picture and full field with field rate resolution.
Uses EDH (Error Detection and Handling) system
based on CRC check-word. Complies with SMPTE
RP165.
Reporting Means
Error Statistics
Front-panel ALARM indicator, rear-panel TTL line,
and CRT readout.
Asynchronous errored seconds. Active picture and
full field statistics are separately compiled.
A–4
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Diagnostics
Performance requirement
Reference information
Embedded Audio
Identifies the presence of up to 16 channels of
AES/EBU digital audio.
Ancillary Data
Bit Activity
Identifies the presence of ancillary data (other than
audio and EDH) and indicates if a checksum error
has occurred.
Indicates if any of the 10 data bits are always high
or low during the active picture for an entire field.
Line Rate
Indicates whether the signal is 525 or 625 line.
Format Errors
Warns that a serial signal format error has occurred
for the following error types:
H
H
H
H
H
H
SAV placed incorrectly relative to EAV.
Line length error.
Field length error.
Reserved values used improperly.
ANC data checksum error.
ANC data parity error.
Signal Lost
Reports absence of the serial video signal.
Digital Data Value Cursor and Listing
(WFM 601M Only)
Digital Waveform
Non-interpolated waveform display. Cursor
identifies selected sample value (hexidecimal,
decimal, binary). Cross-hair cursor inserted on
picture monitor output shows selected line and
sample. Vertical and horizontal shift of picture
monitor output when selecting blanking interval line
and sample values.
Data Mode
Video Mode
Digital List
Displays interleaved data stream sequentially with
31 samples per screen width. Cursor identifies
selected sample value.
Displays Y, Cb, Cr data streams separately.
Channels are selected with VIDEO IN buttons.
Cursor identifies the selected sample value.
Sequential list of sample values in table format.
Cursor identifies selected sample. VIDEO mode
identifies samples as Y, Cb, Cr.
External Reference
Input
Analog composite video or black burst.
–1.8 V to +2.2 V, DC plus peak AC
–8.5 V to +8.5 V, DC plus peak AC
w 20 kW
Maximum Operating Input Voltage
Absolute Maximum Input Voltage
DC Input Impedance
A–5
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Performance requirement
Reference information
Return Loss
w40 dB to 6 MHz; typically w46 dB to 6 MHz,
w40 dB to 10 MHz.
Waveform Horizontal Deflection
Sweep
Internal Synchronization: Proper
horizontal and vertical synchroniza- Sweep free runs without input
Sweep Length: [12 divisions
tion with a component digital signal
conforming to CCIR Rec. 601/656
and SMPTE 125M.
External Synchronization: Proper
horizontal and vertical synchroniza-
tion with a composite sync signal of
approximate line and field rate.
Sweep Timing Accuracy
1 Line:
2 Line:
5 ms/division $1%
10 ms/division $1%
1 Field displays one full field, including field rate
sync. 2 Field displays two full fields and the field
rate sync between them.
Sweep Linearity
$1%
Magnified Sweep Accuracy
1 Line: 0.2 ms/division $1%
2 Line: 1.0 ms/division $1%
Magnified Sweep Linearity
Timing Cursors
$1%
Accuracy: $1%
$0.5% over 20–30° C
Horizontal Position Range
Any portion of the synchronized
sweep can be positioned on screen
in all sweep modes
Analog Audio Mode (WFM 601A Only)
Input
DC coupled, differential input, 20 kΩ input
impedance.
Full Scale Selection
Full Scale Accuracy
Bandwidth
0, 4, 8, and 12 dBu full scale, menu selectable
$0.5 dB at 1 kHz
–3 dB w 500 kHz using a leveled
sine wave.
X and Y Input Phase Matching
Maximum Input Voltage
Calibrator
v 1_, 20 Hz–20 kHz
±8 V peak, measured to chassis ground
Waveform Square Wave
Amplitude: 700 mV $1%
Frequency: 100 kHz $0.1%
Crystal-controlled 10 ms square wave
Component Vector Mode
Vertical Bandwidth
w1.0 MHz
Horizontal to Vertical Bandwidth
Matching
v2° at 500 kHz and 2 MHz
Vertical Gain Accuracy
$1%
A–6
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Performance requirement
Reference information
Horizontal Gain Accuracy
$1%
Display to Graticule Registration
v0.25 box with the color bar
black, display dot centered in target
Electronic Graticule Shape
Vector Display
Minimal visible gaps or tails at corners of target
boxes
P is displayed on horizontal axis and P is
B
R
displayed on vertical axis.
Lightning and Diamond Mode
Vertical Gain Accuracy
Electronic Graticule Display
Diamond
$2%
GBR Deflection axis indicated.
Y is displayed vertically.
Lightning
P is displayed horizontally on top half of display.
B
P is displayed horizontally on bottom half of
R
display.
RGB Gamut Error Indication
Detection Level
Positive detection level = 735 mV
"7 mV (nominally 105% of legal
RGB).
Negative Detection level = –35 mV
"7 mV.
Arrowhead Mode (NTSC/PAL Composite
Limit Display Mode)
Signal to Graticule Registration
Color bar black is positioned in the center of 7.5
IRE box within v.25 box width.
Signal to Graticule Accuracy
(PAL values in parenthesis)
"2 IRE, 100 IRE and 131 IRE
("2, 700 mV)
Composite Limit Cursor Accuracy
(PAL values in parenthesis)
"2% at 100, 110, 120, 131 IRE (700 and 950 mV)
Composite Limit Detection Level
Accuracy (PAL values in parenthesis)
Detection level = 102% "3% of
cursor level
Detection level can be set to 100, 110, 120, or 131
IRE (700 or 950 mV PAL)
Bowtie Mode
Common Mode Rejection Ratio
Accuracy
w34 dB at 2.5 MHz
$3%
Interchannel Timing Match
Picture Monitor Outputs
Signal Format
$2.0 ns
EBU/N10 or RGB, menu selectable.
A–7
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Appendix A: Specifications
Table A–1: Electrical specifications (cont.)
Characteristic
Performance requirement
Reference information
Active Video Accuracy
WFM 601M
700 mV $1% peak-to-peak
(Y-P -P mode)
Typically < "2% for RGB mode.
B
R
WFM 601E and WFM 601A
Typically 700 mV $1% peak-to-
peak (Y-P -P mode)
B
R
Black (Blanking) Output Level
Frequency Response
0 mV "35 mV
Y to 5.75 MHz: $1%
P and P to 2.75 MHz: $1%
B
R
Non-Linearity
v0.5%
Group Delay Error
Y at 5.75 MHz: v10 ns
P and P at 2.75 MHz: v20 ns
B
R
Interchannel Timing Match
Sync Amplitude Accuracy
Y-to-P and Y-to-P "5.0 ns
B
R
300 mV $10%
Analog sync is inserted on Y channel only (G
channel only in RGB mode).
Sync to Video Timing
Return Loss
525 line rate: 9.037 ms "0.050 ms
625 line rate: 9.777 ms "0.050 ms
50 kHz to 5 MHz: w40 dB
Table A–2: CRT display
Characteristic
Performance requirement
Reference information
CRT Viewing Area
80 100 mm
Horizontal: 12.5 divisions
Vertical: 1.19 V
Accelerating Potential
Trace Rotation Range
Graticule
Nominally 13.75 kV
>$1° from horizontal
Total adjustment range is typically w8°.
Internal with variable illumination
A–8
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Appendix A: Specifications
Table A–3: AC power source
Characteristic
Description
Reference information
Electrical Rating
90 – 250 V, 50/60 Hz, 1.5 A maximum ;
Continuous range from 90 to 250 VAC
Supply Type
Single Phase
Supply Connection
Power Consumption
Detachable cord set
< 115 VA (75 watts)
Table A–4: Environmental characteristics
Characteristic
Standard
Reference information
Vibration
Military Specification: Mil–T–28800D,
Paragraph 1.2.2, Class 3
5 minutes at 5 – 15 Hz with 0.060 inch
displacement
5 minutes at 15 – 25 Hz with 0.040 inch
displacement
5 minutes at 25 – 55 Hz with 0.020 inch
displacement
Mechanical Shock
Transportation
Humidity
Non-operating: 50 g 1/2 sine, 11 ms
duration, 3 shocks per surface (18 total)
Qualified under NSTA Test Procedure
1A, Category II
24 inch drop
Proper operation at 95% +0, –5%
Relative Humidity
Do not operate with visible moisture on the
circuit boards.
Table A–5: Physical characteristics
Characteristic
Standard
Dimensions
Height:
Width:
Depth:
133.4 mm (5.25 in)
215.9 mm (8.5 in)
460.4 mm (18.125 in)
Weight
Net:
3.8 kg (8 lbs)
Shipping: 7.2 kg (15.7 lbs) approximate
A–9
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Appendix A: Specifications
Table A–6: Safety standards
Characteristic
Standard
U.S. Nationally Recognized Testing
Laboratory Listing
ANSI/ISA S82.01 - Safety Standard for Electrical and Electronic Test, Measuring,
Controlling, and Related Equipment, 1994.
Canadian Certification
CAN/CSA C22.2 No. 1010.1 - Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use.
European Union Compliance
Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC
IEC1010-1 - Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use.
Additional Compliance
UL3111-1 - Standard for Electrical Measuring and Test Equipment
IEC1010-1 - Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use.
Table A–7: Safety certification compliance
Characteristic
Standard
Temperature (operating)
Altitude (operating)
Equipment Type
0° to +40° C
2000 meters
Test and Measuring
Equipment Class
Class I: Grounded product (as defined in IEC 1010-1, Annex H)
Overvoltage Category
Overvoltage Category II (as defined in IEC 1010-1, Annex J).
Note: Rated for indoor use only.
Category Examples of Products in this Category:
CAT III
Distribution-level mains, fixed installation
CAT II
CAT I
Local-level mains, appliances, portable equipment
Signal levels in special equipment or parts of equipment, telecommunications,
electronics
Pollution Degree
Pollution Degree 2: Do not operate in environments where conductive pollutants may be
present.
A–10
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Appendix A: Specifications
Table A–8: Certifications and compliances
Characteristic
Standard
EC Declaration of Conformity
Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility and Low Voltage
Directive 73/23/ECC for Product Safety. Compliance was demonstrated to the following
specifications as listed in the Official Journal of the European Communities:
1,2
EMC Directive 89/336/EEC
EN 55011
:
Class A Radiated and Conducted Emissions
EN 50081-1 Emissions:
EN 60555-2
EN 50082-1 Immunity:
IEC 801-2
AC Power Line Harmonic Emissions
Electrostatic Discharge Immunity
RF Electromagnetic Field Immunity
Electrical Fast Transient/Burst Immunity
Power Line Surge Immunity
IEC 801-3
IEC 801-4
IEC 801-5
Low Voltage Directive 73/23/EEC:
EN 61010-1
Safety requirements for electrical equipment for
measurement, control, and laboratory use
1
Use high-quality shielded cables.
2
When installed in any of the following Tektronix instrument enclosures:
1700F00 (Tektronix part number 437–0100–04)
1700F02 (Tektronix part number 437–0018–07)
1700F05 (Tektronix part number 437–0095–04)
A–11
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Appendix A: Specifications
A–12
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Appendix B: Remote Operation
The waveform monitor has two multi-pin connectors on the rear panel that
provide different types of remote control. The RS-232 port provides for
automated calibration using a procedure contained in the Service Manual. In a
future firmware release, the RS-232 port will provide remote control using a
SCPI command set. The REMOTE connector provides a way to monitor signal
errors and to load or save Presets. It also provides two audio channel inputs for
the WFM 601A.
RS–232 Connector
The RS-232 connector is a 9-pin D-type connector that provides a remote
verification interface. Figure B–1 shows the pin assignments and the commu-
nication parameters for the RS-232 interface.
Pin
Number Data Connection
1
2
3
4
5
6
7
8
9
DCD (Received line signal detector)
RXD (Received data)
TXD (Transmitted data)
DTR (DTE readly)
Signal ground
Communication parameters
Baud: 9600
DCR (DCE readly)
RTS (Request to send)
CTS (Clear to send)
Not connected
Data bits: 8
Stop bits: 1
Parity: None
Flow control: Xon/Xoff
Figure B–1: Pin assignments for the RS-232 connector
Remote Connector
The rear-panel REMOTE connector is a 25-pin, D-type connector that allows
low-level remote control and audio channel inputs. Use the RS-232 interface for
control using SCPI commands sent from a PC controller.
Preset Control
The Remote connector provides control of Presets and monitoring of line select
and video alarm events. Eight of the Presets (stored front-panel settings) can be
stored or recalled remotely.
B–1
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Appendix B: Remote Operation
When STORE (pin 25) is grounded along with one of the preset pins, the current
front-panel settings are stored at the selected Preset location.
Line Select Strobe
Pin 15 outputs an active-low TTL pulse during selected lines when in Line
Select modes. Use this signal as a trigger for a logic analyzer or oscilloscope.
Serial Video and Gamut
Alarm
Pin 16 outputs an active-low TTL level whenever the front-panel ALARM light
is illuminated or when a gamut alarm occurs. You must enable the gamut alarms
using the Configure menu. See pages for 3–10 and 3–11 for more information on
enabling the Gamut and Serial alarms.
Remote Connector Pin
Assignments
Pin assignments for the REMOTE connector are shown in Figure B–2 and
described in Table B–1. You enable functions by ground closures (TTL lows) on
specified pins. Functions with “overbars” indicate an active low state.
Figure B–2: Pin assignments for the REMOTE connector
Table B–1: Remote connector pin assignments and functions
Pin
number
Function
Signal requirement
Miscellaneous information
1
Not Used
No connection allowed
2
3
4
5
6
7
8
Ground
TTL ground
Not Used
Not Used
Ground
No connection allowed
No connection allowed
TTL ground
Not Used
Ground
No connection allowed
TTL ground
+Y Audio Input
Audio input, +8 V peak
(WFM 601A Only) The +Y and –Y inputs can
function as differential inputs for a common signal.
9
–Y Audio Input
+X Audio Input
Audio input, –8 V peak
Audio input, +8 V peak
(WFM 601A Only)
10
(WFM 601A Only) The +X and –X inputs can
function as differential inputs for a common signal.
B–2
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Appendix B: Remote Operation
Table B–1: Remote connector pin assignments and functions (cont.)
Pin
number
Function
Signal requirement
Miscellaneous information
11
–X Audio Input
Audio input, –8 V peak
(WFM 601A Only)
12
13
14
15
Not Used
Not Used
Ground
No connection allowed
No connection allowed
TTL ground
Line Strobe
In Line Select Modes,
true, low, during selected video
lines
16
17
Serial Video Alarm
Preset 1
True low. Low pulse when a
serial error or a gamut alarm
occurs
You must enable the gamut alarm (page 3–10)
and serial alarm (page 3–11 ) in the Configure
menu.
Ground (TTL low)
Ground (TTL low)
Ground (TTL low)
Ground (TTL low)
Ground (TTL low)
Ground (TTL low)
Ground (TTL low)
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
18
19
20
21
22
23
Preset 2
Preset 3
Preset 4
Preset 5
Preset 6
Preset 7
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
B–3
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Appendix B: Remote Operation
Table B–1: Remote connector pin assignments and functions (cont.)
Pin
number
Function
Signal requirement
Miscellaneous information
24
Preset 8
Ground (TTL low)
Recalls the stored Preset from this location, or
selects the Preset 1 memory location to store the
current front-panel settings. See the pin 25
description.
25
Store
Ground (TTL low)
Grounding STORE enables storage of instrument
settings. When STORE transitions low when one of
the PRESETs is low, the current front-panel
settings are stored in that Preset location.
B–4
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Appendix C: Remote Command Set
This section describes the remote command set for the waveform monitor and
provides examples of typical usage. The remote command set is a versatile and
convenient interface that conforms to industry standards for programmable
instruments.
The waveform monitor permits remote operation through the RS-232 port on the
rear panel. Remote communication parameters are described in Appendix B:
Remote Operation.
The waveform monitor was not designed to be machine-driven; consequently,
characters can be dropped if they are input while the processor is carrying out
other operations. To compensate, the code for a remote communications retry
program has been included at the end of this section. This program ensures that
characters are not dropped when they are input into the waveform monitor. You
may type commands from your work station with or without the program;
however, if you want to create machine-driven test and measurement protocols,
use the retry program provided.
The symbols used in the descriptions of the remote commands are shown in
Table C–1.
Table C–1: Symbols used in this section
Symbol
<ą>
[ ]
Meaning
Group; one element is required
Group; elements are optional
OR; separates a list of arguments
|
The commands in this section are arranged alphabetically by groups of similar
commands. Commands with similar syntax are explained in tables with
argument options and comments about each command. Examples of possible
command strings and responses are then listed below the tables. The rest of the
commands are described individually with examples of syntax and typical usage
given for each command.
In the following descriptions, the capitalized letters in the Syntax descriptions are
the minimum letters necessary for the waveform monitor to recognize the
command. Commands and arguments are not case sensitive.
Most commands have a query form. Generally, you can query at any point along
a command string back to the root but you can not query arguments. In the
following command descriptions, queries are given below the command syntax
C–1
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Appendix C: Remote Command Set
in the Syntax sections. Query examples and typical responses are given in the
Response sections.
C–2
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Cable Measurement Commands
Cable Measurement Commands
The commands in this section provide control of the cable measurements
available in the Serial status mode. You access these measurements differently
depending on whether your waveform monitor has V1.X or V2.X (or latter)
firmware. With either version, you must first enter the Serial mode by sending
the command MENU:SERial. This is equivalent to pressing the SERIAL button
on the front panel.
For waveform monitors with version V1.X firmware, cable and signal strength
commands are active after sending the command SERIAL:MENU STATUS. For
version V2.X firmware, send the command SERIAL:MENU CABLE. This is
equivalent to pressing the side bezel button to select the CABLE menu. Cable
measurements are active only when the SERIAL STATUS menu (V1.X) or
SERIAL CABLE menu (V2.X) are selected.
Use the SLM: commands to select the type of cable your installation uses and to
query the waveform monitor for cable type and length. You can also query for
the computed signal level of a monitored signal. Not all commands work with all
versions of firmware.
SLM:CABle <B8281 | B1694 | B1505> (WFM 601E and WFM 601M Only)
Selects the cable type for use by the Signal Level and Approx Cable Length
measurements. This selection corresponds to the Cable Type selection in the
SERIAL menu. This command works with V1.X and V2.X firmware.
Syntax
SLM:CABle <B8281 | B1694 | B1505>
SLM[:CABle]?
Arguments
Examples
Returns
<B8281 | B1694 | B1505>
slm:cab b1694
slm?
:SLM:LEVEL 4.75 dB;LENGTH 20 Meters;CABLE
B1694; SOURCE 95 PERCENT
slm:cab?
:SLM:CABLE B1694
C–3
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Cable Measurement Commands
SLM:SOURCE? (WFM 601E and WFM 601M Only)
Returns the power (Signal Level readout) of the source as a percent of an
800 mV signal. This command works only with V2.X firmware. See the
corresponding V1.X firmware command SLM:LEVEL.
Syntax
Arguments
Examples
Returns
SLM:[SOURCE]?
None
slm:source?
:SLM:SOURCE 95 PERCENT
SLM:RCVR? (WFM 601E and WFM 601M Only)
Returns a dB value for the power lost in the cable. This command works only
with V2.X firmware. To ensure a correct measurement, use the command
SLM:CABLE to indicate the cable type you are using.
Syntax
Arguments
Examples
Returns
SLM:[RCVR]?
None
slm:rcvr?
:SLM:RCVR 2 dB
C–4
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Cable Measurement Commands
SLM:LEVEL? (WFM 601E and WFM 601M Only)
Returns the power (Signal Level readout) of the source in decibels with reference
to an 800 mV signal. This command works only with V1.X firmware. See the
corresponding V2.X firmware command SLM:SOURCE.
The Signal Level value is derived as LEVEL= 20 Log (Estimated Source
Power)/800 mV. A negative sign indicates that the received power is below
800 mV.
Syntax
Arguments
Examples
Returns
SLM[:LEVEL]?
None
slm:level?
SLM:LEVEL 4.75 dB
SLM:LENGTH? (WFM 601E and WFM 601M Only)
Returns the Approx Cable Length measurement, based on the SLM:CAB setting.
Cable length is the amount of cable between the video source and the waveform
monitor. This command works for firmware version V1.X and V2.X.
Syntax
Arguments
Examples
Returns
SLM[:LENGTH]?
None
slm:length?
SLM:LENGTH 20 METERS
C–5
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Configuration Commands
Configuration Commands
The commands in this section allow you make the following changes to the
waveform monitor:
H
H
Select the source of your reference signal
Select a specific mode for different displays (for example, select the
Lightning mode when in the Vector display)
H
Set parameters for various displays
Most of these commands correspond to the selections available from the
CONFIG menu on the waveform monitor.
REFErence: MODE <INT | EXT>
Selects either the internal serial digital or external composite video for the
synchronization reference.
Syntax
REFErence: MODE <INT | EXT>
REFErence: MODE?
Arguments
Examples
Returns
<INT | EXT>
refe:mode int
refe:mode?
:REFERENCE:MODE INTERNAL
C–6
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Configuration Commands
ARROWhead:LIMIT:PAL <MV_700 | MV_950>
Sets the PAL gamut limit amplitude on the ARROWHEAD graticule. The gamut
limit triggers an alarm when exceeded by the input signal. This selection
corresponds to the choices available under GAMUT in the CONFIG GAMUT
menu.
Use the command DISPlay:SINGLE:GAMut to enable the GAMUT display.
Syntax
ARROWhead:LIMIT: PAL <MV_700 | MV_950>
ARROWhead[:LIMIT | :LIMIT:PAL]?
Arguments
Examples
<MV_700 | MV_950>
arrow:limit:PAL mv_950
arrow:limit:pal MV_700
Returns
arrow:limit:pal?
:ARROWHEAD:LIMIT:PAL MV_700
ARROWhead:LIMIT:NTSC <IRE_100 | IRE_110 | IRE_120 | IRE_131>
Sets the NTSC gamut limit on the ARROWHEAD graticule. The gamut limit
triggers an alarm when exceeded by the input signal. These selections correspond
to the choices available under GAMUT in the CONFIG GAMUT menu.
Use the command DISPlay:SINGLE:GAMut to enable the GAMUT display.
Syntax
ARROWhead:LIMIT:NTSC <IRE_100 | IRE_110 | IRE_120 | IRE_131>
ARROWhead[:LIMIT | :LIMIT:NTSC]?
Arguments
Examples
<IRE_100 | IRE_110 | IRE_120 | IRE_131>
arrow:limit:ntsc ire_120
arrow:limit:ntsc ire_131
Returns
arrow:limit:ntsc?
:ARROWHEAD:LIMIT:NTSC IRE_131
C–7
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Configuration Commands
ARROWhead:FORMat <NTSC | PAL | AUTO>
Sets the video format for theARROWHEAD graticule.
Use the command DISPlay:SINGLE:GAMut to enable the GAMUT display. Use
the command ARROW:LIMIT:NTSC or ARROW:LIMIT:PAL to set the gamut
alarm setting.
Syntax
ARROWhead:FORMat <NTSC | PAL | AUTO>
ARRPWhead[:FORMat]?
Arguments
Examples
Returns
<NTSC | PAL | AUTO>
arrow:form:ntsc
arrow:form?
:ARROWHEAD:FORMAT NTSC
GAMut:GRATicule <ARROWhead | DIAmond>
Selects either the Arrowhead or Diamond display for displaying the signal
gamut. The Arrowhead display checks the composite gamut and the Diamond
display checks the RGB gamut.
Use the command DISPlay:SINGLE:GAMut to enable the Gamut display mode.
Syntax
GAMut:GRATicule <ARROWhead | DIAmond>
GAMut[:GRATicule]?
Arguments
Examples
<ARROWhead | DIAmond>
display:single gamut
gam:grat dia
Returns
gam:grat?
:GAMUT:GRATICULE DIAMOND
C–8
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Configuration Commands
GAMut:ALarm:TRIGger <NONE | CMPST | RGB | BOTH>
Determines the type of gamut error that will trigger a gamut alarm. This
command corresponds to the selections found under GAMUT CHECK in the
GAMUT CONFIG menu.
Syntax
GAMut:ALarm:TRIGger <NONE | CMPST | RGB | BOTH>
GAMut[:ALarm | :ALarm:TRIGger]?
Arguments
Examples
Returns
<NONE | CMPST | RGB | BOTH>
gam:al:trig both
gam:al:trig?
:GAMUT:ALARM:TRIGGER BOTH
GAMut:ALarm:DISPlay <SCRN | PICT | BOTH>
Determines where the gamut alarm indicator is displayed. This command
corresponds to the selections found under ALARM DISP in the GAMUT
CONFIG menu.
Syntax
GAMut:ALarm:DISPlay <SCRN | PICT | BOTH>
GAMut[:ALarm | :ALarm:DISPlay]?
Arguments
Examples
Returns
<SCRN | PICT | BOTH>
gam:al:disp pict
gam:al:disp?
:GAMUT:ALARM:DISPLAY PICT
C–9
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Configuration Commands
STANDard <LINES_525 | LINES_625 | AUTO>
Sets the scanning standard that the instrument expects to NTSC (525 lines) or
PAL (625 lines). When in the AUTO mode, the waveform monitor automatically
senses the standard of the input signal. This selection corresponds to the choices
available under STANDARD in the CONFIG FORMAT menu.
Syntax
STANDard <LINES_525 | LINES_625 | AUTO>
STANDard?
Arguments
Examples
Returns
<LINES_525 | LINES_625 | AUTO>
stand auto
stand?
STANDARD AUTO
VECtor:BARS <B100 | B75>
Selects the 75% or 100% graticule for the Lightning and Vector modes. The
graticule must match the type of the selected input signal. This selection
corresponds to the choices available under COLOR BARS in the CONFIG
WFM/VEC menu.
Syntax
VECtor:BARS <B100 | B75>
VECtor[:BARS]?
Arguments
Examples
Returns
<B100 | B75>
vec:bars b75
vec:bars?
:VECTOR:BARS B75
C–10
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Configuration Commands
VECtor:GRATicule <LTNG | VECtor>
Selects either the Lightning or Vector display. Use the command
DISP:SINGLE:VEC (page C–25) to enable the vector display modes.
Syntax
VECtor:GRATicule <LTNG | VECtor>
VECtor[:GRATicule]?
Arguments
Examples
Returns
<LTNG | VECtor>
vec:grat ltng
vec:grat?
:VECTOR:GRATICULE LIGHTNING
SERial:MENU <STATUS | FORM | CABLE>
Sets the Serial Format display to the Status, Format, or Cable screens. The
STATUS screen includes information such as signal presence, line rate, and error
rate. The FORMAT screen displays the results of several data format checks. The
CABLE screen displays the calculated strength of the input signal and the cable
length.
The CABLE argument is valid only with firmware V2.X and later. With
firmware V1.X, the cable and signal strength readouts are available on the
STATUS screen.
Syntax
SERial:MENU <STATUS | FORM | CABLE>
SERial[:MENU]?
Arguments
Examples
<STATUS | FORM | CABLE>
menu serial
serial:menu form
ser:menu status
Returns
ser:menu?
:SERIAL:MENU STATUS
C–11
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Configuration Commands
SERial:DISPlay <RGB | YPbPr>
Sets the display to native YPbPr or transcoded RGB for the Waveform and
Parade displays. The monitor outputs are not affected. This selection corresponds
to the choices available under WFM AS in the CONFIG WFM/VEC menu.
Syntax
SERial:DISPlay <RGB | YPbPr>
SERial[:DISPlay]?
Arguments
Examples
<RGB | YPbPr>
ser:disp RGB
SER:DISP ypbpr
Returns
ser:disp?
:SERIAL:DISPLAY YPBPR
SERial:MONitor <GBR | YPbPr>
Sets the format of the rear panel MONITOR OUTputs to YPbPr or GBR. This
selection corresponds to the choices available under MON OUT AS in the
CONFIG FORMAT menu.
Syntax
SERial:MONitor <GBR | YPbPr>
SERial[:MONitor]?
Arguments
Examples
<GBR | YPbPr>
ser:mon gbr
SERIAL:MON YPBPR
Returns
ser:mon?
:SERIAL:MONITOR YPBPR
C–12
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Configuration Commands
SERial:EAVSAV <PASS | STRIP>
This command permits stripping of the END/START of ACTIVE VIDEO
information from the displayed signal. This selection corresponds to the choices
available under EAV–SAV in the CONFIG WFM/VEC menu.
Syntax
SERial:EAVSAV <PASS | STRIP>
SERial[:EAVSAV]?
Arguments
Examples
<PASS | STRIP>
ser:eavsav pass
serial:eavsav strip
Returns
ser:eavsav?
:SERIAL:EAVSAV STRIP
SERial:ALarm:<error type> <alarm setting>
These commands select or disable checking for several types of format errors and
correspond to the error selections available in the CONFIG SER ALARM menu.
Table C–2 lists the SERial:ALarm error type commands <error type> and
options <alarm setting>.
Use the UIMENU:CONFIGSEL SERIALARM command (page C–14) to put the
waveform monitor into the serial alarm mode before using this command.
Syntax
SERial:ALarm:<error type> <alarm setting>
SERial[:ALarm | :ALarm:<error type>]?
Arguments
:<error type> <alarm setting>
C–13
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Configuration Commands
Table C–2: SERial:ALarm: commands and options
:<error type> <alarm setting> Remarks
FMTERR
(Format error)
ALARM | OFF
Sets the format error alarm on or off. When on, a Serial
Format error lights the Alarm LED on the front panel. This
selection corresponds to the choices available under FMT
ERROR in the CONFIG SER ALARM menu.
FFCRC
ALARM | OFF
Sets the full-field cyclic redundancy check (FFCRC) error
alarm on or off. When on, a full-field CRC error lights the
Alarm LED on the front panel. This selection corresponds
to the choices available under FULL FIELD CRC ERROR
in the CONFIG SER ALARM menu.
(Full-field cyclic
redundancy
check)
APCRC
ALARM | OFF
Sets the active picture CRC error alarm on or off. When
on, an active picture CRC error lights the Alarm LED on
the front panel. This selection corresponds to the choices
available under ACTIVE PIC CRC ERROR in the CONFIG
SER menu.
(Active picture
cyclic redun-
dancy check)
Examples
Returns
ser:alarm:ffcrc off
ser:alarm:fmterr alarm
serial:alarm:apcrc alarm
serial:alarm:apcrc?
:SERIAL:ALARM:APCRC ALARM
serial:alarm?
:SERIAL:ALARM:FMTERR ALARM;FFCRC OFF;APCRC ALARM
UIMENU:<command> <options>
These commands provide access to the CONFIG and CRT menus, enable the
PREset functions, and clear the menu display. Table C–3 lists the UIMENU
(User Interface menu) commands and argument options.
Syntax
UIMENU:<command> <options>
UIMENU[:<command>]?
Arguments
:<command> <options>
C–14
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Configuration Commands
Table C–3: UIMENU: commands and options
:<command>
<options>
Remarks
STICKY
FILTer | CURsor | LINESe- Sets the selection to the named subsystem
lect | GAIN | CONFIG
when in the UIMENU mode. The Sticky
function is accessible from the front panel
by pressing a menu button before pressing
the CONFIG button.
PREset
ON | OFF
Enables or disables UIMENU presets. Use
the PRESET commands to recall, store,
and name presets.
CONFIG
ON | OFF
Selects the CONFIG menu for display. Use
the CONFIGSEL command to select a
particular display or mode to configure.
CONFIGFCT
CONFIGSEL
ON | OFF
Turns on or off the USER INTERFACE
MENU (also accessible from the bezel
knob).
WFMVEC | EY | JIT |
Selects a category in the CONFIG menu.
SERIALARM | GAM | CAL This selection is equivalent to turning the
bezel knob in the CONFIG menu. Use the
CONFIG command to enable the CONFIG
menu.
CRTADJUST
READ | TRACE |DISPLAY Enables the CRT adjustments on the
current display, if allowed.
Examples
Returns
uimenu:preset off
uimenu:config on
uimenu:configsel wfmvec
uimenu:configfct on
uimenu?
:UIMENU:STICKY FILTER;PRESET OFF;CONFIG ON;CONFIGFCT
ON;CONFIGSEL WFMVEC;CRTADJUST TRACE
uimenu:preset?
:UIMENU:PRESET OFF
C–15
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Cursor Commands
Cursor Commands
The commands in this section allow you to select and move the voltage and
timing cursors on the waveform monitor. They also allow you to make measure-
ments using the cursors.
CURsor:SELect <VOLT | TIME | VOLT_TIME | MARK | NONE>
Enables any one of the following cursor types:
H
H
H
H
VOLT provides two voltage cursors and a track control.
TIME provides two time cursors and a track control.
MARK provides three amplitude markers.
VOLT_TIME provides both VOLT and TIME cursors. Use CUR:CONTROL
to select either the voltage or time cursors.
Syntax
CURsor:SELect <VOLT | TIME | VOLT_TIME | MARK | NONE>
CURsor[:SELect]?
Arguments
Examples
<VOLT | TIME | VOLT_TIME | MARK | NONE>
cur:sel volt
cur:select mark
cursor:select volt_time
Returns
cur?
:CURSOR:SELECT VOLT_TIME;CONTROL TIME
cursor:select?
:CURSOR:SELECT VOLT_TIME
C–16
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Cursor Commands
CURsor:CONTROL <VOLT | TIME>
Selects either the VOLT or TIME cursor when the cursor type is both voltage
and time. This command operates like the bezel button for selecting between
voltage and time cursors when VOLT_TIME (or the front panel selection V+T)
is enabled.
Syntax
CUR:CONTROL <VOLT | TIME>
CUR[:CONTROL]?
Arguments
Examples
Returns
<VOLT | TIME>
cur:control time
cursor:control?
:CURSOR:CONTROL TIME
MC:<ONE | TWO | THREE> <marker position>
Sets the position of the three amplitude markers over the voltage range of the
displayed waveform. These selections correspond to the MARK1, MARK2, and
MARK3 bezel knobs when MARK is enabled under the CURSOR menu.
The range of accepted values for the argument <marker position> is 548 to 3548.
Syntax
MC:<ONE | TWO | THREE> <marker position>
MC[:ONE | TWO | THREE]?
Arguments
Examples
:<ONE | TWO | THREE> <marker position>
mc:three1838
mc:one 1200
Returns
mc?
:MCURSORS:ONE 1200;TWO 2025;THREE 1838
C–17
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Cursor Commands
<VC | TC>:<ONE | TWO> <voltage level | timing range>
Positions the voltage or timing cursors over the voltage range or timing base of
the displayed waveform. When :TRACK is ON, moving one cursor moves the
other cursor the same distance. Table C–4 describes the voltage and timing
cursor positioning commands, arguments, and limits.
Syntax
<VC | TC>:<ONE | TWO> <voltage level | timing range>
<VC | TC>[:ONE | TWO]?
Arguments
<voltage level | timing range>
Table C–4: Voltage and Timing Cursor positioning commands and options
Commands
Arguments
Limits
VC:<ONE | TWO>
<voltage level>
0 – 4000
TC:<ONE | TWO>
<timing range>
0 – 4000
Examples
Returns
vc:one 3000
tc:two 2136
tc:one 1000
tc?
:TCURSORS:ONE 1000;TWO 2136;DIFFERENCE 1136;TRACK OFF
C–18
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Cursor Commands
<TC | VC>:TRACK <ON | OFF>
Enables cursor tracking. When :TRACK is ON, moving one cursor moves the
other cursor an equal amount in the same direction. Table C–5 describes the
voltage and timing cursor tracking commands. Both options can be turned ON or
OFF.
Use the Voltage and Timing Cursor positioning commands (page C–18) to move
the cursors.
Syntax
<TC | VC>:TRACK <ON | OFF>
<TC | VC>[:TRACK]?
Arguments
<ON | OFF>
Table C–5: Voltage and Timing Cursor tracking commands and options
Commands
Arguments
Remarks
VC:TRACK
<ON | OFF>
When on, the Voltage cursors move together to maintain
the distance between them. Moving VC:ONE causes
VC:TWO to move the same amount.
TC:TRACK
<ON | OFF>
When on, the Timing cursors move together to maintain
the distance between them. Moving TC:ONE causes
TC:TWO to move the same amount.
Examples
Returns
vc:track on
tc:track off
tc:track?
:TCURSORS:TRACK OFF
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Digital Waveform and Digital List Commands
Digital Waveform and Digital List Commands
The commands in this section allow you to change parameters for the Digital
Waveform and Digital List displays.
DGTL? (WFM 601M Only)
NOTE. The values displayed when using this command are accurate only when
the waveform monitor is in the Data List mode.
Returns data for all DGTL display settings. For a description of each part of the
returned data, refer to the associated command descriptions.
Syntax
Arguments
Examples
Returns
DGTL?
None
dgtl?
dgtl?
:DGTL:VIDMODE VIDEO;FREEZE ON;BASE HEX;REGION
ACTIVE;DATA:V0 528;V1 528;V2 528;V3 532;V4 532;V5 532;V6
532;V7_SELECTED 536;V8 536;V9 536;V10 536;V11 540;V12 540;V13
540;V14 540;:DGTL:VDATA:SELECTED 532;CB 536;Y0 536;CR 536;Y1 536
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Digital Waveform and Digital List Commands
DGTL:REGion? (WFM 601M Only)
Returns the region of the video signal where the data cursor is located. Possible
regions include active picture, horizontal blanking, and vertical blanking.
Syntax
Arguments
Examples
Returns
DGTL:REGION?
None
dgtl:region?
:DGTL:REGION ACTIVE
DGTL:DATA? (WFM 601M Only)
DGTL:DATA:V#?
NOTE. The values displayed when using this command are accurate only when
the waveform monitor is in the Data List mode.
DGTL:DATA? returns 15 data samples centered on the currently selected sample
(see LINESelect: commands on page C–42). This region data corresponds to the
data seen on the Digital Video display.
DGTL:DATA:V#? returns only the numbered sample from the 15 displayed,
counting from the top down. Sample 7 is always the sample selected by the data
cursor. This sample corresponds to V7 on the display.
Change the display mode to Digital List using the DISPlay:SINGLE <display
mode> command (page C–25) before using this command.
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Digital Waveform and Digital List Commands
Syntax
Arguments
Examples
Returns
DGTL:DATA?
DGTL:DATA:V#?
Include the letter V followed by an integer (0–14) for the line number (#)
argument.
disp:single:dlist
dgtl:data:v7?
dgtl:data:v7?
:DGTL:DATA:V7 536
DGTL:VDATA? (WFM 601M Only)
NOTE. The values displayed when using this command are accurate only when
the waveform monitor is in the Digital Waveform mode.
Returns the four demultiplexed data samples grouped with the currently selected
sample (see LINESelect: commands on page C–42) The returned data corre-
sponds to the data group containing the data cursor on the Digital Video display.
Change the display mode to Digital Waveform (DISP:SINGLE DWFM on
page C–25) before using this command.
Syntax
Arguments
Examples
DGTL:VDATA?
None
disp:single:dwfm
dgtl:vdata?
Returns
dgtl:vdata?
:DGTL:VDATA:SELECTED 536;CB 536;Y0 536;CR 536;Y1 536
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Digital Waveform and Digital List Commands
DGTL:VIDmode <VIDEO | DATA> (WFM 601M Only)
Selects whether to display the raw data as a linear data sequence or as groups of
four color difference values as they appear in the demultiplexed data: Cb, Y, Cr
Y′.
Syntax
DGTL:VIDmode <VIDEO | DATA>
DGTL[:VIDmode]?
Arguments
Examples
Returns
<VIDEO | DATA>
dgtl:video video
dgtl:vid?
:DGTL:VIDMODE VIDEO
DGTL:FReeze <ON | OFF> (WFM 601M Only)
Selects between viewing frozen data (ON) or active data (OFF) on the Digital
List display. Freeze the data to study transient events.
Syntax
DGTL:FREEZE <ON | OFF>
DGTL[:FREEZE]
Arguments
Examples
Returns
<ON | OFF>
dgtl:freeze on
dgtl:fr?
:DGTL:FREEZE ON
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Digital Waveform and Digital List Commands
DGTL:BASE <HEX | DECIMAL | BINARY> (WFM 601M Only)
Displays the sample values in hexadecimal, binary or decimal format on the
Digital List display.
Syntax
DGTL:BASE <HEX | DECIMAL | BINARY>
DGTL[:BASE]?
Arguments
Examples
Returns
<HEX | DECIMAL | BINARY>
dgtl:base hex
dgtl:base?
:DGTL:BASE HEX
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Display Commands
Display Commands
The commands in this section allow you to select and set parameters for the
display modes of the waveform monitor. You must use the VECtor:GRATicule
and GAMut:GRATicule commands to select one of the two modes for the Vector
and Gamut displays.
DISPlay:SINGLE <display mode>
Sets the display mode to one of those described in Table C–6. The table lists the
mode each command invokes and indicates some of the commands described
elsewhere in this section that relate to the command.
NOTE. The DISPlay:SINGLE:<display mode> command elicits no response
when the waveform monitor is in the Multiple mode. You must first enter the
Single display mode by disabling the Multiple mode from the waveform monitor,
or by using the complete command string DISP:SINGLE <display mode>.
Syntax
DISPlay:SINGLE <display mode>
DISPlay[:SINGLE]?
Arguments
<display mode>
Table C–6: DISPLay:SINGLE commands
<display mode>
Selects
Remarks
WFM
Waveform
Use the command INPUT:SOU to select the A or B
inputs, and use INPUT:CHA to select which of the
RGB or YPbPr channels to display (page C–38).
VECtor
EYe
Vector or Lightning
Eye
Use the command VECTor:GRATicule to select the
Lightning or Vector display (page C–11).
For the WFM 601M, use the command EYe:DISP
to select the Eye or EQEye display. Use the
command EYe:MODE to select Overlay or 10 Eye
mode. Use the command EYe:CLO to set the clock
high-pass filter (page C–33).
EQEYE
JITter
EQ Eye
Jitter
Use for the WFM 601E only.
Use the JITter commands to set jitter measurement
parameters (page C–40).
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Display Commands
Table C–6: DISPLay:SINGLE commands (cont.)
<display mode>
Selects
Remarks
PIX
Picture
Use the commands DISPlay:PIXB and
DISPlay:PIXC to set the blackness and contrast
levels (page C–28).
GAMut
Diamond | Arrowhead Use the command GAMut:GRAT to select the
DIAmond or ARROW display (page C–8).
BOWtie
AUDIO
Bowtie
Audio
Use the command GAIN:AUDIO (page C–35) to set
the audio input gain level. Use the POS:<VERT |
HORZ> commands to position the Audio display
(page C–45).
PARade
DLIST
Parade
Use the command INPUT:SOU to select the A or B
inputs and use INPUT:CHA to select which of the
RGB or YPbPr channels to display (page C–38).
Digital List
Use the command DGTL:VID to select the Video or
Data modes (page C–23). Use the command
DGTL:FR to view frozen or active data (page
C–23).
DWFM
Digital Waveform
Examples
display:single wfm
disp:single ey
Returns
disp:single?
:DISPLAY:SINGLE EYE
DISPlay:INTENSITY:<display mode>:<line select mode> <intensity>
The DISPlay:INTENSITY commands set the intensity of the <display mode> in
the Normal, H1, or H15 Line Select modes. Intensity is an integer from –2047 to
1700. Table C–7 describes the <display mode>, <lineselect mode>, and
<intensity> options.
Syntax
DISPlay:INTENSITY:<display mode>:<line select mode> <intensity>
DISPlay[:INTENSITY |
:INTENSITY:<display mode> |
:INTENSITY:<display mode>:<line select mode>]?
Arguments
:<display mode>:<line select mode> <intensity>
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Display Commands
Table C–7: DISPlay:INTENSITY command options
<display mode>
<line select mode>
<intensity>
1
1
1
1
WFM
<NORMal | H1 | H15>
<NORMal | H1 | H15>
<NORMal | H1 | H15>
<NORMal | H1 | H15>
–2047 to 1700
Sets the intensity of the Waveform display
VEC
–2047 to 1700
–2047 to 1700
–2047 to 1700
Sets the intensity of the Vector display
LTNG
Sets the intensity of the Lightning display
EYe
Sets the intensity of the Eye display
1
When REF mode is set to Internal, the displayed 1H and 15H intensities both use the
15H intensity setting.
Examples
Returns
disp:intensity:wfm:h1 1000
display:intensity:wfm?
:DISPLAY:INTENSITY:WFM:H1 1000
DISPlay:INTENSITY:READ <intensity>
Sets the intensity of the on-screen readout text. Intensity is an integer from
–2047 to 1700.
Syntax
DISPLay:INTENSITY:READ <intensity>
DISPLay[:INTENSITY | :INTENSITY:READ]?
Arguments
Examples
Returns
<intensity>
displ:intensity:read 700
display:intensity:read?
:DISPLAY:INTENSITY:READ 700
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Display Commands
DISPlay:INTENSITY:AUDIO <intensity> (WFM 601A Only)
Sets the intensity of the on screen readout text. Intensity is an integer from
–2047 to 1700.
Syntax
DISPLay:INTENSITY:AUDIO <intensity>
DISPLay[:INTENSITY | :INTENSITY:AUDIO]?
Arguments
Examples
Returns
<intensity>
displ:intensity:audio 1000
display:intensity:audio?
:DISPLAY:INTENSITY:AUDIO 1000
DISPlay:PIXC <contrast range>
Sets the contrast in the Picture display. The contrast value is an integer from
–170 (low) to –1200 (high). The median value (–685) provides good contrast.
This setting corresponds to the CONTRAST adjustment available after pressing
the CRT MENU button in the Picture display.
Syntax
DISPlay:PIXC <contrast range>
DISPlay[:PIXC]?
Arguments
Examples
Returns
<contrast range>
displ:pixc -700
display:pixc?
:DISPLAY:PIXCONTRAST -700
DISPlay:PIXB <blackness range>
Sets the blackness level of the Picture display. The blackness value is the level of
the picture that is considered to be the darkest black. The upper limit is +300 and
the lower limit is –300. A setting less than zero can produce a light picture,
while settings greater than 100 can produce a dark picture. This setting corre-
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Display Commands
sponds to the BLACK LEVEL adjustment available when the CRT MENU
button is pressed in the Picture display.
Syntax
DISPlay:PIXB <blackness range>
DISPlay[:PIXB]?
Arguments
Examples
Returns
<blackness range>
displ:pixb 100
display:pixb?
:DISPLAY:PIXBLACKNESS 100
DISPlay:TRACEROT <tracerotate>
Allows adjustment of trace rotation. The argument <tracerotate> is an integer
from –2047 to +2047. The median value ( 0 ) represents a trace rotation angle of
approximately 0 degrees. Each extreme value rotates the trace by about 15
degrees.
Syntax
DISPlay:TRACEROTate <tracerotate>
DISPlay[:TRACEROTate]?
Arguments
Examples
Returns
<tracerotate>
disp:tracerot –100
display:tracerot?
:DISPLAY:TRACEROTATE –100
DISPlay:SCALEillum <scale>
Adjusts the brightness level of the permanent scale on the CRT. The brightest
value for the argument <scale> is 0 and the lowest is –2047. The best value
depends on the brightness of the environment.
Syntax
DISPlay:SCALEillum <scale>
DISPlay[:SCALEillum]?
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Display Commands
Arguments
<scale>
Examples
Returns
disp:scale –100
display:scale?
:DISPLAY:SCALEILLUM –100
DISPlay:FOCUS:<line select mode> <range>
Adjusts the CRT focus for different Line Select modes. The <range> for all of
the FOCUS settings is –2047 to +2047. Table C–8 describes the command
options.
Use this command to set the focus for displays using Normal, H1 or H15 LINE
SELECT modes.
Syntax
DISPLAY:FOCUS:<line select mode> <range>
DISPLAY[:FOCUS | :FOCUS:<line select mode>]?
Arguments
:<line select mode> <range>
Table C–8: DISPLay:FOCUS command options
:<line select mode>
Selects
<range>
NORMAL
See the command LINES:MODE.
Line select off
–2047 to +2047.
H1
H1
–2047 to +2047.
–2047 to +2047.
H15
H15
Examples
Returns
DISPLAY:FOCUS:H1 2047
disp:focus:norm 100
display:focus?
:DISPLAY:FOCUS:NORMAL 100;H1 2047;H15 2047
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Error Commands
Error Commands
The waveform monitor detects errors and records error messages in an error
message buffer. To determine whether an error has been recorded, send the query
ESR?. If an error has been detected, the waveform monitor will respond with a
message similar to :ESR 32. To get more information about the error, send the
query ALLEV?. The response to the ALLEV? query will be similar to one of the
error message types described in Table C–9.
ESR?
This query determines if the waveform monitor has recorded any command
errors. If ESR? returns an error, use the ALLEV? query to determine the type of
error recorded. Table C–9 describes possible error messages displayed by the
waveform monitor.
Syntax
Arguments
Examples
Returns
ESR?
None
esr?
esr?
:ESR 32
See Table C–9 for a list of possible command error reports returned by the
ALLEV? query.
ALLEV?
This query is used to determine the type of command error reported by the
waveform monitor. Table C–9 describes a list of possible error messages returned
by ALLEV?. To use ALLEV?, query using ESR? to determine whether the
waveform monitor has recorded any command errors. If an error was detected,
use ALLEV? to help you determine the possible cause of the error.
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Error Commands
The error messages displayed consist of three parts:
H
H
H
An ALLEV response number
A description of the error type
A record of the command string in which the error was detected
The description of the error type and the record of the command string are
enclosed in quotes. Multiple error messages are separated by a comma and an
ALLEV response number.
Syntax
ALLEV?
Arguments
None
Table C–9: Typical ALLEV? responses to detected system errors.
ALLEV? report
Remarks
:ALLEV 0,”No events to report –
queue empty”
No errors to report in the error message buffer.
:ALLEV 100,”Command error;
command not allowed – vc:differ-
ence 1000”
This error message is typical of invalid commands or
arguments; for instance, a misspelled or disallowed
command.
:ALLEV 102,”Syntax error; invalid
character data – arrow:limit:ntsc
ire_133\0A”
This error message is typical of invalid arguments.
:ALLEV 103,”Invalid separator; illegal This error message is typical of invalid characters in the
use of alias – disp:pixb
argument of a command.
298990–909009\0A
:ALLEV 104,”Data type error; invalid This message is typical of invalid data types in the
character data – n:ltng:var:vert:value argument of a command; for instance, ASCII characters
ON\0A”
where an integer value is expected.
:ALLEV 113,”Undefined header;
unrecognized command –
gain:vec:var:horz:”
This message is typical of incorrect command strings;
for instance commands sent without an argument.
Examples
Returns
gain:ltng:var:vert:value ON (this is an invalid command)
esr?
:ESR 32
allev?
:ALLEV 104,”Data type error; invalid character data–n:var:vert:value ON\0A”
See Table C–9 for additional examples.
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Eye Pattern Commands
Eye Pattern Commands
The commands in this section allow you to select either the Eye or EQEye
displays and to toggle between the Overlay and 10 Eye modes. Use the
command DISPlay:SINGLE:EYe to enable the Eye display.
EYe:DISPlay < FLAT | EQEYE> (WFM 601M Only)
Selects either the Flat (or raw) digital data stream or an Equalized data stream for
the Eye display. The Flat mode corresponds to the EYE bezel button selection in
the Eye display mode. The EQEYE mode compensates for cable loss in a long
cable by applying receiver equalization to the signal.
Syntax
EYe:DISPlay <FLAT | EQEYE>
EYe[:DISPlay]?
Arguments
Examples
Returns
<FLAT | EQEYE>
ey:disp eqeye
eye:disp?
:EYE:DISPLAY EQEYE
EYe:MODE <OVERLAY | EYE10> (WFM 601E and WFM 601M Only)
Selects the trigger mode for the Eye display. OVERLAY displays three eyes and
EYE10 displays 10 eyes.
Syntax
EYe:MODE <OVERLAY | EYE10>
EYe[:MODE]?
Arguments
Examples
Returns
<OVERLAY | EYE10>
eye:mode eye10
eye:mode?
:EYE:MODE EYE10
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Eye Pattern Commands
EYe:CLOckhpf <E10HZ | E100HZ | E1000HZ>(WFM 601E and WFM 601M Only)
Selects between high-pass filters 10, 100, or 1000 Hz to suppress low-frequency
jitter while in the Eye display mode.
Syntax
EYe:CLOckhpf <E10HZ | E100HZ | E1000HZ>
EYe[:CLOckhpf]?
Arguments
Examples
Returns
<E10HZ | E100HZ | E1000HZ>
eye:clo e1000hz
eye?
:EYE:DISPLAY EQEYE;MODE EYE10;CLOCKHPF E1000HZ (WFM 601M)
:EYE:MODE EYE10;CLOCKHPF E1000HZ (WFM 601E)
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Gain Commands
Gain Commands
The commands in this section allow you to select fixed gain levels or set variable
gain levels for the Waveform, Vector, and Lightning displays.
GAIN:AUDIO <DBU0 | DBU4 | DBU8 | DBU12> (WFM 601A Only)
Sets the gain level of the analog audio input to the desired level and scales the
electronic graticule accordingly.
Syntax
GAIN:AUDIO <DBU0 | DBU4 | DBU8 | DBU12>
GAIN[:AUDIO]?
Arguments
Examples
Returns
<DBU0 | DBU4 | DBU8 | DBU12>
gain:audio dbu0
gain:audio?
:GAIN:AUDIO 0
GAIN:W_V_STATE <x1 | x5 | x10>
Sets the fixed vertical gain of the Waveform display to X1, X5 or X10. Gain is
selectable in the GAIN menu.
Syntax
GAIN:W_V_STATE <x1 | x5 | x10>
GAIN[:W_V_STATE]?
Arguments
Examples
Returns
<x1 | x5 | x10>
gain:w_v_state x5
gain:w_v_state?
:GAIN:W_V_STATE X5
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Gain Commands
GAIN:<WFM | VEC>:VAR:STATE <ON | OFF>
Sets variable vertical gain ON or OFF for the Waveform or the Vector displays.
Variable gain is selectable in the GAIN menu.
Syntax
GAIN:<WFM | VEC>:VAR:STATE <ON | OFF>
GAIN[:<WFM | VEC>:VAR:STATE]?
Arguments
Examples
Returns
<WFM | VEC> and <ON | OFF>
gain:wfm:var:state on
gain:wfm:var:state?
:GAIN:WFM:VARIABLE:STATE ON
GAIN:<WFM | VEC>:VAR:VALUE <gain>
Sets the value of variable <gain> for the Waveform or Vector display to an
integer value. The minimum value of <gain> is 200 and the maximum value is
3000.
Syntax
GAIN:<WFM | VEC>:VAR:VALUE <gain>
GAIN:<WFM | VEC>:VAR:VALUE?
Arguments
Examples
Returns
<WFM | VEC> and <gain>
gain:vec:var:value 950
gain:vec:var?
:GAIN:VECTOR:VARIABLE:STATE ON;VALUE 950
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Gain Commands
GAIN:LTNG:VAR:<VERT | HORZ>:STATE <ON | OFF>
Sets the variable vertical or horizontal gain ON or OFF for the Lightning display.
Syntax
GAIN:LTNG:VAR:<VERT | HORZ>:STATE <ON | OFF>
GAIN:LTNG:VAR:<VERT | HORZ>:STATE?
Arguments
Examples
Returns
<VERT | HORZ> and <ON | OFF>
gain:ltng:var:horz:state on
gain:ltng:var:horz:state?
:GAIN:LTNG:VAR:HORZ:STATE ON
gain:ltng:var:horz?
:GAIN:LTNG:VAR:HORZ:STATE ON;VALUE 750
GAIN:LTNG:VAR:<VERT | HORZ>:VALUE <gain>
Sets the value of the variable vertical or horizontal gain for the Lightning display
to an integer value between 200 (minimum) and 3000 (maximum).
Syntax
GAIN:LTNG:VAR:<VERT | HORZ>:VALUE <gain>
GAIN:LTNG:VAR<VERT | HORZ>:VALUE?
Arguments
Examples
<VERT | HORZ> and <gain>
gain:ltng:var:vert:state on
gain:ltng:var:vert:value 2000
Returns
gain:ltng:var:vert?
:GAIN:LTNG:VAR:VERT: STATE ON;VALUE 2000
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Input Commands
Input Commands
The commands in this section allow you to make the following changes to the
waveform monitor:
H
H
H
Select an input signal source
Select which channel or channels to display
Set the offset level for the Pb and Pr channels of the input signal
INput:SOUrce <SERIALA | SERIALB>
Selects the signal for display from the A or B rear-panel, loop-through inputs.
Syntax
INput:SOUrce <SERIALA | SERIALB>
INput[:SOUrce]?
Arguments
Examples
Returns
<SERIALA | SERIALB>
in:sou seriala
input:sou?
:INPUT:SOURCE SERIALA
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Input Commands
INput:CHANnel <CH1 | CH2 | CH3>
Selects the component YPbPr or RGB channel to display in Waveform and
Parade displays. The channel mapping is CH1 (Y/R), CH2 (Pb/G), CH3 (Pr/B)
and any combination of the three channels can be displayed at one time by
separating the channel options with commas.
Syntax
INput:CHANnel <CH1 | CH2 | CH3>
INput[:CHANnel]?
Arguments
Examples
Returns
<CH1 | CH2 | CH3>
input:chan ch1,ch2
in:chan?
:INPUT:CHANNEL CH1,CH2
INput:PBPROFFSet <MV_0 | MV_350>
Sets the offset for the Pb and Pr channels to either 0 mv or 350 mv.
Syntax
INput:PBPROFFSet <MV_0 | MV_350>
INput[:PBPROFFSet]?
Arguments
Examples
Returns
<MV_0 | MV_350>
input:pbproffset mv_0
in?
:INPUT:SOURCE SERIALA; CHANNEL CH1,CH2; PBPROFFSET MV_0
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Jitter Measurement Commands
Jitter Measurement Commands
The commands in this section allow you to change parameters for the Jitter
measurement display.
JITter:HPFILter <J10HZ | J1000HZ | J10KHZ | J100KHZ> (WFM 601M Only)
Selects the high-pass filter frequency for the Jitter measurement display.
This setting corresponds to the Jitter HPF selection in the Config Jitter menu.
Syntax
JITter:HPFILter <J10HZ | J1000HZ | J10KHZ | J100KHZ>
JITter[:HPFILter]?
Arguments
Examples
<J10HZ | J1000HZ | J10KHZ | J100KHZ>
jit:hpfilter j1000hz
jit:hpfil j10khz
Returns
jit?
:JITTER:HPFILTER J10KHZ;UNITS UI;ALIGNMENT 0.11 UI;TIMING 0.10
UI
JITter:UNITS <SEC | UI | OFF> (WFM 601M Only)
Selects the units for the readout of jitter magnitude.
Syntax
JITter:UNITS <SEC | UI | OFF>
JITter[:UNITS]?
<SEC | UI | OFF>
jit:units OFF
Arguments
Examples
Returns
jit:units?
:JITTER:UNITS OFF
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Jitter Measurement Commands
JITter:<ALIGNMENT | TIMING >? (WFM 601M Only)
Independently queries the magnitude of the jitter components. The TIMING
measurement is the raw jitter and the ALIGNMENT is the jitter remaining after
the high-pass filter (JIT:HPFIL). Use the command JIT:UNITS to pick the units
of measure.
Syntax
Arguments
Examples
Returns
JITter:<ALIGNMENT | TIMING >?
<ALIGNMENT | TIMING >
jit:timing?
jit:timing?
:JITTER:TIMING 0.10 UI
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Line Select Commands
Line Select Commands
The commands in this section allow you to select the part of the video signal you
wish to display and measure. Use the command MENU LINESelect (page C–50)
to enable the Line Select functions.
LINESelect:<command> <options>
Table C–10 describes the LINESelect: commands and the argument options
associated with each command. These commands correspond to the selections
available when you press the LINE SELECT button.
Syntax
LINESelect:<command> <options>
LINESelect[:<command>]?
Arguments
:<command> <options>
Table C–10: LINESelect: commands and options
:<command> <options>
Remarks
MODE
<ON | OFF>
Selects whether the Line Select mode is ON or OFF.
FMODE
<ALL | TWO>
Selects the mode that displays one line out of field 1
or field 2 or the same line in both fields.
FIELD
<F1 | F2>
Selects from which field the Line Select sample is
chosen. Select the line with the command
LINES:NUMBER and the sample with LINES:SMPL.
DISP
<H1 | H15 | SAMPLE> Selects the Line Select mode from single line (H1) or
a range of 15 lines or a single sample within a line.
NUMBER
<line number>
Selects a particular horizontal line for Line Select.
Select the field using the command LINES:FIELD
and the sample using LINES:SMPL.
SMPL
<sample>
For the WFM 601M, selects a particular sample on a
horizontal line for Line Select. Select the line with
the command LINES:NUMBER and the field with
LINES:FIELD.
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Line Select Commands
Examples
Returns
lines:mode on
lines?
:LINESELECT:MODE ON;NUMBER 573;SMPL 741;FIELD F2;FMODE
TWO;DISPLAY SAMPLE
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Position Commands
Position Commands
The commands in this section allow you to position displays vertically and
horizontally on the graticule.
POSition:VERTical:<display mode> <range>
POSition:HORZ:<display mode> <range>
The POSition commands correspond to the bezel knobs that position the display
vertically and horizontally. POSition:VERTical commands and options are listed
in Table C–11. Table C–12 lists the POSition:HORZ (horizontal) commands and
options.
Acceptable values for the argument <range> for both the vertical and horizontal
positioning commands are from –500 to 500. When queried, vertical = 0 and
horizontal = 0 indicates that the display is centered.
NOTE. For firmware versions V2.1 and below, to position the Lightning display
using the remote commands, you must first put the waveform monitor into the
Lightning display mode using the DISPlay:SINGLE VECtor (page C–25) and
VECtor:GRATicule LTNG (page C–11) commands. Then use the VECtor display
vertical and horizontal positioning commands listed in Tables C–11 and C–12.
With V2.2 and above, positioning commands are effective without first selecting
the Lightning display.
Syntax
POSITion:<VERTical | HORZ>:<display mode> <range>
POSITion[:<VERTical | HORZ> |
:<VERTical | HORZ>:<display mode>]?
Arguments
<display mode> <range>
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Position Commands
Table C–11: POSition:VERTical commands and options
<display mode>
<range>
Remarks
WFM | EYe | BOWtie –8188 to +8188
Positions the named display vertically.
Positions the Picture display vertically.
Positions the Vector display vertically.
Positions the Lightning display vertically.
PIX
–3120 to +966
–500 to +500
–500 to +500
–2047 to +2047
VECtor
LTNG
ARROWhead
Positions the Arrowhead Gamut display
vertically.
DIAmond
–2047 to +2047
–250 to +250
Positions the Diamond Gamut display vertically.
Positions the Audio display vertically.
AUDIO
(WFM 601A only)
Table C–12: POSition:HORZ commands and options
<display mode>
<range>
Remarks
WFM | EYe | BOWtie –12282 to +12282
Positions the named display horizontally.
Positions the Picture display horizontally.
Positions the Vector display horizontally.
Positions the Lightning display horizontally.
PIX
–2700 to +2700
–500 to + 500
–500 to +500
VECtor
LTNG
ARROWhead
–2047 to +2047
Positions the Arrowhead Gamut display
horizontally.
DIAmond
–2047 to +2047
–330 to +330
Positions the Diamond Gamut display horizon-
tally.
AUDIO
Positions the Audio display horizontally.
(WFM 601A only)
Examples
Returns
pos:vertical:EYe 100
pos:horz:eye?
:POSITION:HORIZONTAL:EYE 0
pos:vert:ey?
:POSITION:VERTICAL:EYE 100
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Preset Commands
Preset Commands
The commands in this section allow you to select, store, and name parameter
presets for the waveform monitor. Use the command UIMENU:PREset (page
C–15) to enable the preset functions.
PREset:REcall <PRESETn | FACTORY >
Recalls the Preset stored in the named location. The preset function allows you
to store up to ten front panel setups: Nine user defined presets and one factory
preset. The factory preset is programmed to assist in calibrating the instrument.
The letter n in the argument <PRESETn> represents a number between 1 and 9.
Syntax
Arguments
Examples
Returns
PREset:REcall <PRESETn | FACTORY >
<PRESETn | FACTORY >
preset:rec factory
None
PREset:STORE <PRESETn>
Deletes the currently stored setting in the named memory location and replaces it
with the current front panel settings. The letter n in the argument <PRESETn>
represents a number between 1 and 9. (The waveform monitor can store 9 presets
in addition to the FACTORY preset.)
Syntax
Arguments
Examples
Returns
PREset:STORE <PRESETn>
<PRESETn>
preset:store preset1
None
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Preset Commands
PREset:NAMES:<PRESETn> “any string”
Sets the name of the specified Preset. The name is limited to ten alphanumeric
characters.
You can use the 25 pin REMOTE connector on the rear panel to save or recall
Presets. The appropriate pin is grounded to select the front panel setup stored in
that preset location. Grounding pin 25 with any one of the other preset pins
stores the current front panel setup into that selected PRESET location. Refer to
Appendix B for more information on using the REMOTE connector.
Syntax
Arguments
Examples
PREset:NAMES:<PRESETn> “any string”
:<PRESETn> “any string”
preset:names:preset5 “jit–meas”
preset:names:preset1 “clock–meas”
Returns
None
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Sweep Commands
Sweep Commands
The commands in this section allow you to manipulate the sweep characteristics
of the waveform monitor.
SWEEP:TIMING <ONEL | TWOL | ONEF | TWOF>
Sets the sweep rate to one line (5 msec/div), two line (10 msec/div), one field, or
two fields for displays other than the Parade and Eye displays. This command is
equivalent to pressing the LINE/FIELD button on the Front Panel which has four
states: ONELINE, TWOLINE, ONEFIELD, and TWOFIELD. One and two field
sweep modes do not display a time/div readout.
To set the sweep rate for the Eye display and the Parade display when you are
displaying multiple channels, see SWEEP:TIMING <ONEL | ONEF>.
Syntax
SWEEP:TIMING <ONEL | TWOL | ONEF | TWOF>
SWEEP[:TIMING]?
Arguments
Examples
Returns
<ONEL | TWOL | ONEF | TWOF>
sweep:timing twol
sweep:timing?
:SWEEP:TIMING TWOLINE
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Sweep Commands
SWEEP:TIMING <ONEL | ONEF>
When you display more than one channel at a time in the Parade display, the
SWEEP:TIMING command toggles between one line (ONEL) and one field
(ONEF). In the Eye mode, the <ONEL | ONEF> argument allows you to toggle
between a 1 and 3 ns/div line sweep rate and a field rate sweep.
To set the sweep rate for displays other than the Eye or multiple channel Parade
displays see SWEEP:TIMING <ONEL | TWOL | ONEF | TWOF>.
Syntax
SWEEP:TIMING <ONEL | ONEF>
SWEEP[:TIMING]?
Arguments
Examples
Returns
<ONEL | ONEF>
sweep:timing onef
sweep:timing?
:SWEEP:TIMING ONEFIELD
SWEEP:MAG <OFF | ON>
Sets horizontal magnification ON or OFF.
Syntax
SWEEP:MAG <ON | OFF>
SWEEP[:MAG]?
Arguments
Examples
Returns
<ON | OFF>
sweep:mag off
sweep?
:SWEEP:TIMING ONEFIELD; MAGNIFY OFF
C–49
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System Commands
System Commands
Using the commands in this section you can make the following changes to the
waveform monitor:
H
H
H
Select menus needed to change various parameters of the waveform monitor
Select an appropriate filter for the Waveform and Parade displays
Enable and disable the AFC and ECHO functions, the readout alignment
markers, and the internal calibration signal
H
Access the serial number for the waveform monitor
MENU <FILTer | CURsor | LINESelect | CONFIG | GAIN | CRT | CLear | SERial>
Displays the named menu or clears the displayed menus. In the WFM and
PARade displays, MENU:FILter displays the filters menu. In the Eye display, it
indicates the filter in use at the top right corner of the screen.
Syntax
MENU <FILTer | CURsor | LINESelect | CONFIG |
GAIN | CRT | CLear | SERial>
MENU?
Arguments
Examples
<FILTer | CURsor | LINESelect | CONFIG | GAIN | CRT | CLear | SERial>
menu lines
menu config
menu ser
menu cl
Returns
menu?
:MENU CLEAR
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System Commands
FILTer <FLAT | DIFF | LP>
Selects a filter setting for the Waveform and Parade displays. Table C–13
describes the options for this command.
Syntax
FILTer <FLAT | DIFF | LP>
FILTer?
Arguments
<FLAT | DIFF | LP>
Table C–13: FILTer command options
Arguments
Remarks
FLAT
Selects a flat filter (all pass) for the Waveform and Parade
displays.
DIFF
LP
Selects a differentiated step filter for the Waveform and Parade
displays.
Selects a 1 MHz low–pass filter for the Waveform and Parade
displays.
Examples
Returns
filt flat
filt?
:FILTER FLAT
AFC <ON | OFF>
Sets the Automatic Frequency Control Clock ON or OFF. When AFC is OFF
the synchronization is DIRECT and when ON synchronization is from the AFC
clock. AFC should be on except when large, low-frequency jitter is present in
your system.
Syntax
AFC <ON | OFF>
AFC?
Arguments
<ON | OFF>
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System Commands
Examples
Returns
afc on
afc?
:AFC ON
PORT:ECHO <ON | OFF>
Enables the echo of remote commands to the controlling device through the
remote interface port. Echo should be on when using a monitor program and off
when using a test program to send commands and receive data.
Syntax
PORT:ECHO <ON | OFF>
PORT[:ECHO]?
Arguments
Examples
Returns
<ON | OFF>
PORT:echo OFF
port:echo?
:PORT:ECHO OFF
ROTEST <ON | OFF>
Sets the Readout alignment markers ON or OFF. When set to On, four cross-
shaped markers appear on the display. Use the Rotate bezel knob to adjust the
display to match the horizontal and vertical graticule lines.
Syntax
ROTEST <ON | OFF>
ROTEST?
Arguments
Examples
<ON | OFF>
rotest off
rotest on
Returns
rotest?
:ROTEST ON
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System Commands
SNID?
Returns the waveform monitor serial number.
Syntax
Arguments
Examples
Returns
SNID?
None
snid?
snid?
:SNID B0123456
CALSignal:ENable <OFF | ON>
In Waveform display, turns ON/OFF the internal calibrator signal.
Syntax
CALSignal:ENable <OFF | ON>
CALSignal[:ENable]?
Arguments
Examples
Returns
<OFF | ON>
cals:en OFF
cals?
:CALSIGNAL:ENABLE OFF
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System Commands
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Remote Command Processing Code
The following code ensures that the waveform monitor does not drop any
characters during remote command operations. This procedure expects a
character string to send and places to put two types of responses: expected and
unexpected.
/*
* wfmto601.c
*
* This module contains the processing functions required for a DOS or
* Windows based PC to communicate effectively with the WFM601x family of
* instruments. This code provides an example of the message buffering
* required due to the lack of a hardware UART.
*
*
* This module uses a DOS communications code library included as a part
* of the book "C Asynch Manager" copyright 1991 Blaise Computing Inc,
* 819 Bancroft Way, Berkeley, CA 94701.
The library is freely
* redistributable as part of the product when you purchase the book.
* Aside from purchasing its products, Tektronix has no business
* relationship with Blaise, and under no circumstances warrants this
* software for use to any particular purpose. Use this code at your own risk.
*/
#include "asynch_1.h"
#include <ctype.h>
/*
* ASYNC library constants
*/
#define IO_BUFSIZ
#define OKAY
2300
0x600b
/* Number of connection attempts to make to the instrument
2
*/
#define NUMBER_OF_RETRIES
/*
*
*
*
*
*
*
*
*
*
Blaise Computing error code definitions (not a complete list):
#define A_OK
0
1
6
7
// Operation successful
#define INV_PORT
#define NO_PORT_FOUND
#define OUT_Q_FULL
#define IN_Q_EMPTY
#define TIMEOUT
#define CANCEL
// Invalid or uninitialized port
// Port not found at address
// Output queue is filled
10 // Input queue is empty
12 // Timeout waiting for event
13 // Wait event cancelled by user
*/
C–55
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Remote Command Processing Code
/*
* Module WARNINGS (these warnings indicate bad communications or
* invalid requests to the instrument)
*/
#define W_INVALID_RESP -1
#define W_UNEXPEC_RESP -2
/* Invalid response from instrument
/* Unexpected response from instrument
*/
*/
/* Local communications port
static int comPort;
*/
/*
* init601Port - Initialize the port to communicate with the WFM601x
*
* This procedure connects the program to a COM port, attempts to open it,
* and initialize communications with the instrument.
It returns either
* A_OK (0), or an error code value indicating the problem.
*/
int
init601Port
(
int
desiredComPort /* The desired COM portĊfrom 1 to 4
*/
)
{
static unsigned char
int
ioBuf[IO_BUFSIZ];
lStat, mStat;
/* Buf used by IO lib
/* Required status
*/
*/
register int
register int
tryCounter;
errCode;
/* Count tries
/* Keep error values
*/
*/
/* Check arguments for sanity
if ( desiredComPort < 1 || desiredComPort > 4 )
return INV_PORT;
*/
/* Set the desired communications port
comPort = desiredComPort;
*/
*/
/* Repeatedly attempt to initialize and open serial port
for (tryCounter = 0; tryCounter < NUMBER_OF_RETIRES; tryCounter++)
{
/*
* Initialize port protocol:
* port #, 9600 Baud, no parity, no stop bits, 8 bit data
*/
errCode = init_a1(comPort, 7, 0, 0, 3, &lStat, &mStat);
/*
* If port initialized without error, open port and return
*/
if (errCode == OKAY)
{
errCode = open_a1(comPort,
sizeof(ioBuf) / 2, sizeof(ioBuf) / 2, 0, 0, ioBuf);
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Remote Command Processing Code
if ( errCode == A_OK )
{
/* Set remote XON/XOFF flow control
*/
(void) setop_a1(comPort, 6, 1);
return A_OK;
}
break;
}
/*
* Open and close port to reset it, and try to initialize
* it again.
*/
(void)open_a1(comPort, sizeof(ioBuf)/2, sizeof(ioBuf)/2, 0, 0, ioBuf);
close_a1 (comPort);
}
/*
* If we can't at least get an OK, the port is either
* missing or busy.
*/
if ( tryCounter == NUMBER_OF_RETIRES)
comPort = NO_PORT_FOUND;
/* On error, unset the comPort and return
*/
comPort = 0;
return errCode;
}
/*
* sendToWfm601 - Send data to an instrument from the WFM601x family
*
* This is the central procedure in this module. It sends "portMsg"Ċa
* newline terminated stringĊto the instrument. If the message is a query,
* this procudure waits for the instrument to respond and places that response
* in "expectedResp". If the instrument returns any data while the message is
* being sent, this procedure stores that data in "unexpectedResp" and returns
* W_UNEXPEC_RESP. Finally, a cancel callback is accepted to allow the user
* to decide when to stop waiting; cancelFunc is periodically called, and if
* it returns a non-zero value, the procedure immediately terminates (pass
* NULL if you don't want to use this feature).
*
* The response buffers should be at least 1024 chars in length, which is
* the maximum length of an instrument response.
*/
int
sendToWfm601
(
char *portMsg,
/* The newline terminated send message
/* Buffer for expected responses
/* Buffer for unexpected responses
/* User cancel routine to stop waiting
*/
*/
*/
*/
char *expectedResp,
char *unexpectedResp,
int (*cancelFunc)(void)
)
{
C–57
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Remote Command Processing Code
register char
char
unsigned int
sendChar;
recvChar;
portStatus;
/* Char to send to the instrument
/* Char received from the instrument
/* Status of the serial port
*/
*/
*/
int
char
isQuery = 0;
*baseUnexp;
/* Set if portMsg is a query
/* The base unexpected response
*/
*/
register int
int
int
libError;
iq_size;
iSendAttempt;
/* Error code returned from library
/* Unused return arg required by lib
/* Counter to halt pgm after x retries
*/
*/
*/
/* Return invalid port when port has not been initialized
if ( comPort == 0 )
return INV_PORT;
*/
/* Set the base unexpected response pointer
baseUnexp = unexpectedResp;
*/
*/
*/
*/
/* Initialize the send attempt counter
iSendAttempt = 0;
/* Loop until we reach the end of string
while ((sendChar = *portMsg) != '\0')
{
/* Force character to be lower case
if ( isupper(sendChar) )
sendChar = tolower(sendChar);
/* Send the current character to the instrument
if ((libError = wrtch_a1 (comPort, sendChar)) != A_OK)
return libError;
*/
/* Wait (up to 10 seconds) for char to be sent
libError = drain_a1(2, 10 * 19, 0);
*/
*/
/* Complain if char was not sent (bad cable?)
if (libError != A_OK && libError != TIMEOUT)
return libError;
/* Record whether this is a query command
if ( sendChar == '?' )
isQuery = 1;
*/
/* Loop until all characters are sent
for(;;)
*/
*/
*/
*/
{
/* Wait up to 30 seconds for instrument response
iwait_a1 (comPort, 30 * 19L, &portStatus, cancelFunc);
/* Get the instrument echo character
libError = rdch_a1(comPort, &recvChar, &iq_size, &portStatus);
/* On any error (bad cable) return error
if (libError != A_OK)
{
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Remote Command Processing Code
/* If no character is present (i.e., no echo response)
* then resend the dropped character. But if
* number of retires has been exceeded, then bail out
*/
if (libError == IN_Q_EMPTY)
{
if (iSendAttempt++ > NUMBER_OF_RETRIES )
{
strcpy( expectedResp, "NADA");
printf("\nNo Response");
getch();
return libError;
}
break;
}
else
return libError;
}
/* Everything is Fine
if ( sendChar == recvChar )
{
/* Advance the port message string
portMsg++;
*/
*/
/* now that we have a successful echo, reset the 'send attempt'
* counter
*/
iSendAttempt = 0;
if ( recvChar == '\n' )
{
/* If this was a '\n', expect a trailing '\r'
if ((libError = iwait_a1(comPort, 20 * 19L,
&portStatus, cancelFunc)) != A_OK)
return libError;
*/
*/
*/
*/
/* Get the instrument echo character
if ((libError = rdch_a1(comPort, &recvChar,
&iq_size, &portStatus)) != A_OK)
return libError;
/* Check if we failed to get a trailing return
if ( recvChar != '\r' )
return W_INVALID_RESP;
}
/* Break to send next character
break;
}
/*
* Instrument returned an unrelated character. Record it.
* Continue to resend this character.
*/
*unexpectedResp++ = recvChar;
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Remote Command Processing Code
/* Break out of this loop and halt the program if
* the max number of retries has been exceeded.
*/
if (iSendAttempt++ > NUMBER_OF_RETRIES)
{
strcpy(expectedResp, "NADA");
printf("\nUnrelated character returned");
getch();
return libError;
}
}
/* end for(;;) character sending loop
/* end while() port message sending loop
*/
*/
}
/*
* If this is a query, read the next line.
* Wait forever until we get it.
*/
if ( isQuery )
{
for (;;)
{
/* Wait up to 20 seconds for instrument response
*/
*/
*/
if ( (libError = iwait_a1 (comPort, 20 * 19L,
&portStatus, cancelFunc)) != A_OK)
return libError;
/* Get the instrument echo character
if ( (libError =
rdch_a1(comPort, expectedResp, &iq_size, &portStatus)) != A_OK)
return libError;
/* Advance if character read wasn't a return
if ( *expectedResp != '\n' )
expectedResp++;
else
{
/* It was... expect a trailing '\r'
if ((libError =iwait_a1(comPort, 20 * 19L,
&portStatus, cancelFunc)) != A_OK)
return libError;
*/
*/
*/
/* Get the instrument echo character
if ((libError =
rdch_a1(comPort, &recvChar, &iq_size, &portStatus)) != A_OK)
return libError;
/* Check if we failed to get a trailing return
if ( recvChar != '\r' )
return W_INVALID_RESP;
break;
}
}
}
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Remote Command Processing Code
/* Terminate the string of chars received above
*expectedResp = '\0';
*/
/* Return an unexpected warning if we got one fromthe instruemnt
if ( unexpectedResp != baseUnexp )
return W_UNEXPEC_RESP;
*/
return 0;
}
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Remote Command Processing Code
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Appendix D: User Service
This section describes preventive maintenance for the waveform monitor and
how to replace graticule light bulbs. If the waveform monitor does not function
properly, send it to a qualified service personnel or contact Tektronix for service.
Cleaning or Replacing the Fan Filter
To ensure adequate air flow, clean or replace the rear-panel fan filter regularly.
The interval between filter cleaning or replacement is determined by the
operating environment. In a dusty environment, check the filter monthly. The
Accessories kit shipped with your waveform monitor contain several replace-
ment filters.
To clean or replace the filter, follow these steps:
1. Turn off power to the waveform monitor.
2. Carefully pull the fan cover housing off the fan. No screws attach the cover
to the fan.
3. Remove the filter from the fan cover.
4. Wash the filter in a mild detergent solution, rinse thoroughly and dry. Place
the clean, dry filter or a new filter in the fan cover.
5. Replace the cover over the fan.
Fuse Replacement
The line fuse for this instrument is located inside the cabinet, under a protective
shield. Do not attempt to replace this fuse. Contact a qualified service technician
for assistance.
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Appendix D: User Service
Graticule Light Replacement
The graticule is illuminated by small light bulbs located under the bezel that
surrounds the CRT. You or a service person can replace these bulbs if they burn
out. The Accessories kit shipped with your waveform monitor contain several
replacement bulbs. Additional bulbs can be purchased from Tektronix or from
local electronics distribution sources.
Required Tools
This procedure requires the following tools:
H
H
H
1/16 inch Allen wrench
Small, straight-blade screwdriver
Tweezers with curved or serrated tips
Procedure
Follow these steps to replace a graticule light bulb:
1. Turn off the Power switch and disconnect the AC line cord.
2. Using the Allen wrench, loosen the set screws in the five knobs below the
CRT; then remove the knobs.
3. Insert a small, straight-blade screwdriver into the recessed area on the right
or left side of the panel. Pry gently until the panel snaps out of the front-
panel frame. See Figure D–1 for panel and recess locations.
Recess
Recess
Remove this panel
(shaded portion)
Remove these five knobs
Figure D–1: Graticule light bulb replacement
D–2
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Appendix D: User Service
CAUTION. Needle-nosed pliers are not recommended in the following step, as
they are more likely to break a bulb.
4. To remove a bulb, position the tweezer tips on the thin, flat portion of the
bulb (close to the plastic socket). Carefully pull the bulb straight out.
5. To install a new bulb, hold it with the tweezers on the flat portion, align the
bulb leads with the socket, and push the bulb in until it snaps into place.
6. Place the panel below the CRT, and press on both the right and left sides of
the panel until it snaps into place.
7. Replace the five knobs below the CRT and tighten the set screws.
Cleaning
Clean the dust from the outside of the waveform monitor with a soft, clean cloth
or small brush. A brush is especially useful for removing dust from around the
selector buttons, knobs, and connectors. Hardened dirt can be removed using a
soft cloth, dampened with a mild detergent solution. Do not use abrasive
cleaners.
CAUTION. Do not allow water to get inside any enclosed assembly or component.
Do not clean any plastic materials with benzene, toluene, xylene, acetone, or
similar compounds, because they may damage the plastic.
Clean the light filter and CRT face with a soft, lint-free cloth dampened in
denatured alcohol. Do not use abrasive cleaners.
Interior cleaning and maintenance should be performed only by qualified service
personnel. Instructions for interior maintenance are provided in the Service
manual.
Replacing the CRT Filter
A smoke-gray filter covers and protects the face of the CRT. If the filter becomes
damaged, replace it by following these steps:
1. Turn off the Power switch and disconnect the AC line cord.
2. Using the Allen wrench, loosen the set screws in the five knobs below the
CRT; then remove the knobs.
D–3
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Appendix D: User Service
3. Insert a small, straight-blade screwdriver into the recessed area on the right
or left side of the panel. Pry gently until the panel snaps out of the front-
panel frame. See D–1 for panel and recess location.
4. Remove the two Torx screws that fasten the bezel to the waveform
monitor.
5. Grasp the bottom of the bezel and pull out and upward to remove the bezel
from the instrument. Two hinges at the top of the bezel hold it in place. Once
the bezel is at a 45° angle with the front panel, they disengage. Remove the
damaged filter out the back of the bezel piece.
6. Snap the new filter into place on the back side of the bezel. Position the
ridged side of the filter towards the CRT.
7. Replace the bezel and bezel screws. Tighten the screws. Be careful not to
overtighten them.
8. Place the panel below the CRT, and press on both the right and left sides of
the panel until it snaps into place.
9. Replace the five knobs below the CRT and tighten the set screws.
D–4
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Glossary
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Glossary
Accuracy
The closeness of the indicated value to the true value.
Bandwidth
The range of frequencies over which signal amplitude remains constant
(within some limit) as it is passed through a system.
Baseband
Refers to the composite video signal as it exists before modulating the
picture carrier. Composite video distributed throughout a studio and used for
recording is at baseband.
Bowtie Display
A display used to assess relative timing and gain through a three-channel
component system.
Color Difference Signals
Signals used by color television systems to convey color information in such
a way that the signals go to zero when there is no color in the picture. R–Y,
B–Y, I, and Q are all color difference signals for the NTSC system; U and V
are color difference signals for the PAL system. The component system color
difference signal are Y, PB, PR as specified by SMPTE and CCIR standards.
Color Gamut
The area between minimum and maximum reproducible limits for elements
of the color difference or RGB signals.
Component Video
Video which exists in the form of three separate signals, all of which are
required in order to completely specify the color picture. For example, R, G,
and B; or Y, R–Y, and B–Y.
Composite Video
A single video signal containing all of the necessary information to repro-
duce a color picture. Created by adding quadrature amplitude modulated
R–Y and B–Y to the luminance signal for NTSC systems or U and V to the
luminance signal for PAL systems.
CRC
Cyclic Redundancy Code. A series of transmitted bits used to enhance the
error detection capabilites of a system.
dB (Decibel)
A logarithmic unit used to describe signal ratios. For voltages, dB = 20 Log10
(V1/V2).
Glossary–1
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Glossary
Diamond Display
A simplified vector display for RGB signals that defines the valid gamut
limits in the form of two diamonds.
Distortion
See harmonic distortion.
EDH
Error detection and handling. Supports the standard SMPTE RP-165, which
proposes a technique for recognizing inaccuracies in the serial digital signal.
Frame
Contains all the information required for a complete picture. For interlaced
scan systems, there are two fields in a frame.
Gamma
A measure that compares the contrast in the original and reproduced
television picture. Since picture monitors have a nonlinear relationship
between the input voltage and brightness, the signal must be correspondingly
enhanced to nullify the nonlinear distortion. Gamma correction is always
done at the source (camera) in television systems: the R, G, and B signals are
converted to R1/V, G1/V, and B1/V. Values of about 2.2 are typically used for
gamma.
Gamut
See Color Gamut.
GBR
See RGB.
Graticule
The scale which is used to quantify the displayed signal on a waveform
monitor or vectorscope. Graticules may either be screened onto the faceplate
of the CRT (internal graticule), or onto a piece of glass or plastic that fits in
front of the CRT (external graticule). They can be electronically generated.
Harmonic Distortion
Signal distortion caused by non-linearities in a system. System non-lineari-
ties produce multiples of a single frequency signal applied to the the system.
Harmonic distortion is evident when a pure sine wave applied to a system
produces harmonic content at multiples of the sine wave frequency at the
output.
Hue
The property of color that allows us to distinguish between colors such as
red, yellow, purple, etc.
Lightning Display
A display, for use with SMPTE specified color difference signals (Y, PB, PR),
that plots the two color difference signals against luminance to create a
display similar in appearance to a lightning bolt.
Glossary–2
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Glossary
Linear Distortion
Refers to distortions which are independent of signal amplitude.
Lissajous figure
An X–Y plot in which the signals applied to both axes are sinusoidal
functions. For a stable display the signals must be harmonics. Lissajous
figures are useful for determining phase and harmonic relationships.
LSB
Least Significant Bit. The lowest weighted bit or signal line.
Luminance
The signal (Y) which represents brightness or the amount of light in the
picture. Luminance is the only signal required for black and white pictures.
For color systems, it is obtained as a weighted sum (Y = 0.3R + 0.59G +
0.11B) of the R, G, and B signals.
MSB
Most Significant Bit. The highest weighted bit or signal line.
Nonlinear Distortion
Refers to distortions which are amplitude-dependent.
NTSC
National Television System Committee. The organization which developed
the television standard currently in use in the United States, Canada, and
Japan. Now generally used to refer to that standard.
PAL
Phase Alternate Line. Refers to one of the television systems used in Europe
and many other parts of the world. The phase of one of the color difference
signals alternates from line to line to help cancel out phase errors.
Pb
A color difference signal used in component video systems. It is derived by
subtracting the B (blue) signal from Y.
Pr
A color difference signal used in component video systems. It is derived by
subtracting the R (red) signal from Y.
Receiver Equalization
Refers to recovering the data signal after cable loss. The signal is boosted to
its original standard amplitude.
RF
Radio Frequency. In television applications, RF generally refers to the
television signal after the picture carrier modulation process.
RGB
Red, Green, and Blue. Also referred to as GBR in SMPTE specifications.
The three primary colors used in color television’s additive color reproduc-
Glossary–3
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Glossary
tion system. These are the three color signals generated by the camera and
used by the picture monitor to produce a picture.
R–Y
One of the color difference signals obtained by subtracting luminance (Y)
from the red camera signal.
Saturation
The property of color which relates to the amount of white light in the color.
Highly saturated colors are vivid, while less saturated colors have more white
mixed in and, therefore, appear pastel. For example, red is highly saturated,
while pink is the same hue, but less saturated.
In signal terms, saturation is determined by the ratio between luminance level
and chrominance amplitude. It should be noted that a vectorscope does not
display saturation; the length of the vectors represents chrominance
amplitude. In order to verify that the saturation of the colors in a color bar
signal is correct, you must check luminance amplitudes with a waveform
monitor in addition to observing the vectors.
Termination
In order to accurately send a signal through a transmission line, there must be
an impedance at the end which matches the impedance of the source and of
the line itself. Amplitude errors and reflections will otherwise result. Video is
a 75 W system, so a 75 W terminator must be put at the end of the signal path.
U
V
The B–Y signal after a weighting factor of 0.493 has been applied. The
weighting is necessary to reduce peak modulation in the composite signal.
The R–Y signal after a weighting factor of 0.877 has been applied. The
weighting is necessary to reduce peak modulation in the composite signal.
Vectorscope
A specialized oscilloscope which demodulates the video signal and presents
a display of R–Y versus B–Y in NTSC systems (or V versus U in PAL
systems). The angle and magnitude of the displayed vectors are respectively
related to hue and saturation.
Vertical Interval
The synchronizing information that appears between fields and signals the
picture monitor to return to the top of the screen to begin another vertical
scan.
Waveform Monitor
A specialized oscilloscope that plots voltage versus time to evaluate
television signals.
Y
See Luminance.
Glossary–4
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Index
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Index
1700F00, 1–3
blank panel, 1–10
A
Cable Length
Aberrations, serial channel measurements, 3–23
Accessories, 1–2
measurement, 3–49
measurement for firmware V1.X, 3–47
Cable Screen, 3–49
optional accessories, 1–3
Options, 1–3
CABLE TYPE
standard (included), 1–2
for firmware V1.X, 3–47
serial format selection, 3–50
CAL SIG, configuration menu, 3–12
Calibrate
Accuracy, Glossary–1
Active PIC CRC Error, in Configure SER ALARM
menu, 3–11
AFC, synchronization selection, 3–11
Air filter, part number, 1–2
ALARM, 2–4
CONFIG menu, 3–12
gain, 3–12
Calibration, 3–7
Alarm
horizontal gain, 3–7
vertical gain, 3–7
based on serial format checks, 3–44
Gamut alarm, 3–33
Calibrator, calibration signal, 1–2
Certifications and Compliances, A–11
Changed Since Reset, Serial format selection, 3–46
Check, after shipment, 1–15
Cleaning, the instrument, D–3
Cleaning Fan Filter, D–1
CLEAR MENU, 2–5
Clock BW, in Configure EYE PATTERN menu, 3–10
Color Bars, in Configure WFM/VEC menu, 3–9
Command set, C–1
ALARM DISP, in Configure GAMUT menu, 3–10
Amplitude, serial channel measurements, 3–22
Analog Audio, see Audio, 3–1
ANC Checksum, Serial format checks, 3–49
ANC Parity, Serial format checks, 3–48
AP CRC, using to measure error rate, 3–51
AP CRC ERR SEC, Serial format selection, 3–46
Arrowhead Display
composite gamut, 3–31
NTSC and PAL graticules, 3–31
setting format, 3–32
Component video, Glossary–1
Composite, setting Gamut alarm, 3–33
Composite gamut
Audio
analog signals, 3–1
checking, 3–32
display, 3–1
Diamond Display, 3–31
Composite video, Glossary–1
CONFIG menu, map of functions, 3–8, 3–9
Configuration menu
Calibrate CAL SIG, 3–12
Calibrate GAIN CAL, 3–12
Configure menu
gain, 3–4
graticule calibrations, 3–4
Lissajous patterns, 3–1
measuring phase error, 3–4
Serial format selection, 3–46
Audio display, 1–26, 2–3
Automatic, format checks, 3–44
Calibrate description, 3–12
description, 3–8
B
Eye Pattern description, 3–10
Eye pattern filters, 3–19
Format description, 3–11
Gamut description, 3–10
Jitter description, 3–10
Bowtie Display, 3–5
relative gain check, 3–6
timing measurement, 3–6
Buttons, functional overview, 2–2
Jitter Display settings, 3–38
map of functions, 3–9
SER ARM description, 3–11
WFM/VEC description, 3–9
Connector
C
Cabinetizing, 1–8
Cabinets, 1–5
compatibility, 1–14
Index–1
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Index
Remote, B–1
RS232, B–1
Digital Waveform, 3–16
in Functional Check, 1–24
output monitor signals, 3–17
picking the data format, 3–16
using Gain, 3–18
Connectors, rear panel, 2–6
Coprocessor code version, determining software version,
3–12
using Line Select, 3–18
Video and Data modes, 3–16
Direct, synchronization selection, 3–11
Display
CRC
use in AP CRC measurements, 3–51
use in EDH measurements, 3–50
CRC value, in Serial format screen, 3–46
Cross hair cursor, on picture monitor output, 3–39
CRT
Audio, 3–1
Bowtie, 3–5
Multiple, 3–41
filter part number, 1–2
Parade, 3–41
filter replacement, D–3
setting intensity, 3–12
Cursor Menu, 3–13
Serial format selection, 3–46
serial format selection, 3–50
setting intensity, 3–12
Vector modes, 3–53
Waveform, 3–58
Cursors, 3–13
Both selection, 3–13
data cursor correlated, 3–39
on MON OUT video, 3–39
on picture monitor output, 3–39
timing, 3–13
timing Cursors with Magnification, 3–13
using in Waveform display, 3–58
using Markers, 3–13
E
EAV–SAV, in Configure WFM/VEC menu, 3–9
EDH, using to measure error rate, 3–50
EDH DET, front panel indicator, 2–4
Elapsed Time, Serial format selection, 3–46
Electrical specifications, A–1
Enclosure, cabinet selection, 1–5
Environmental Characteristics, A–9
EQ EYE, receiver equalization mode, 3–19
Error rate
using with Gain, 3–13
voltage, 3–13
D
Data
AP CRC measurements, 3–51–3–53
EDH measurements, 3–50–3–53
measurements, 3–50–3–53
Errored seconds
full field, 3–46
Serial format screen, 3–45
EXT REF input, 2–7
jitter measurement with Eye Pattern, 3–27
mode in Digital List display, 3–14
mode in Digital Waveform display, 3–16
viewing with Digital List display, 3–14
viewing with Digital Waveform display, 3–16
Data Cursor
correlation with Digital Waveform display, 3–16
on Digital Waveform display, 3–17
Data format
External Reference Input, Loop–Through Inputs, 2–7
Eye Display
in Functional Check, 1–20
reference discussion, 3–19
EYE PATTERN, Configure menu, 3–10
Eye Pattern
for Digital List display, 3–15
for Digital Waveform display, 3–16
Data Range, Serial format checks, 3–48
Diamond Display
See also Eye Display
checking RGB Gamut, 3–30
construction of the diamond graticule, 3–29
RGB gamut, 3–29
10 Eye trigger mode, 3–21
aberration measurement, 3–23
amplitude measurement, 3–22
Clock BW filter, 3–19
DIFF, Filter menu selection, 3–27
Digital List, 3–14
Clock BW filters, 3–19
Configure menu, 3–10
EQ EYE mode, 3–19
FLAT mode, 3–19
Freeze/Update selection, 3–15
Line Select interaction, 3–15
picking the data format, 3–15
Video and Data modes, 3–14
Index–2
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Index
jitter measurement, 3–26
measurements, 3–22
SERIAL, 2–4
SWEEP, 2–4
Overlay trigger mode, 3–20
rise time actual, 3–25
rise time measurement, 3–24
Trigger Modes, 3–20
using bezel buttons, 2–4
using bezel knobs, 2–4
VIDEO IN, 2–4
Front Panel Controls and Indicators, 2–1
vertical gain, 3–21
Full Field CRC Error, in Configure SER ALARM menu,
word correlated behavior, 3–27
3–11
Full field CRC errored seconds, 3–46
Functional Check, 1–15–1–26
Audio display, 1–26
Digital Waveform, 1–24
Eye Display, 1–20
F
F1 AP CRC Value, Serial format selection, 3–46
F2 AP CRC Value, Serial format selection, 3–46
Fan, filter part number, 1–2
Fan filter, cleaning or replacing, D–1
Features, product features, 1–1
FF CRC ERR SEC, Serial format selection, 3–46
Field
Gamut displays, 1–23
Jitter Display, 1–20
procedure, 1–17
required equipment, 1–15
Vector Display, 1–21
Functional Overview, 2–1
ALARM, 2–4
selecting, 3–39
selecting one or two for display, 3–52
Field Length, Serial format checks, 3–48
15H Line Select mode, 3–39
Filter
Audio display, 2–3
CLEAR MENU, 2–5
DISPLAY buttons, 2–2
EDH DET, 2–4
Front Panel, 2–1
LINE/FIELD button, 2–4
MAG button, 2–4
MENU, 2–4
POWER, 2–5
REF, 2–4
SERIAL, 2–4
fan filter part number, 1–2
for Eye Pattern, 3–19
for Parade Display, 3–27
for Waveform Display, 3–27
high pass for Jitter Display, 3–38
Filter Menu, 3–27
Firmware, determining software version, 3–12
525/625 Lines, Serial format selection, 3–46
FLAT, Filter menu selection, 3–27
FLAT EYE, Eye Pattern mode, 3–19
flesh tone indicator, 3–54
FMT Error, in Configure SER ALARM menu, 3–11
FORMAT, configuration menu, 3–11
Format, serial status, 3–44
Format Error, Serial format selection, 3–46
Format Screen, 3–48
SWEEP buttons, 2–4
VIDEO IN button, 2–4
Fuse
fuse part number, 1–2
replacing, D–1
G
Freeze/Update, for Digital List display, 3–15
Front panel
Gain
audio, 3–4
ALARM indicator, 2–4
calibration, 3–12
Clear Menu, 2–5
for Eye Pattern, 3–21
DISPLAY buttons, 2–2
menu, 3–28
EDH DET indicator, 2–4
LINE/FIELD, 2–4
MAG, 2–4
MENU, 2–4
overview of functions, 2–1
POWER, 2–5
relative gain check with Bowtie display, 3–6
using with Cursors, 3–13
using with Digital Waveform display, 3–18
Waveform display, 3–58
GAIN CAL, configuration menu, 3–12
GAMUT
REF, 2–4
saving settings, 3–43
configure menu, 3–10
in Configure GAMUT menu, 3–10
Index–3
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Index
Gamut Alarm, 3–33
Gamut Check, in Configure GAMUT menu, 3–10
Gamut display, 3–29
repackaging for shipment, 1–10
Instrument specifications, A–1
Arrowhead Display, 3–31
checking RGB gamut, 3–30
composite Arrowhead Display, 3–31
configure menu, 3–10
J
Jitter
configure menu, 3–10
definition, 3–26
demodulation, 3–38
Diamond Display, 3–29
in Functional Check, 1–23
setting Gamut alarms, 3–33
Glossary, Glossary–1
serial channel measurements, 3–26
using Line Select to limit measurement, 3–38
viewing waveform, 3–37
Jitter Display, 3–37
Graticule
2T Pulse to Bar measurement, 3–36
Arrowhead NTSC and PAL, 3–31
Audio display, 3–4
for Vector Display, 3–54
horizontal scale, 3–36
Configure menu, 3–38
configure menu, 3–10
in Functional Check, 1–20
Jitter HPF, in Configure JITTER menu, 3–10
JITTER OUT, signal origin, 3–37
internal, 3–34
K-factor measurement, 3–35
K-factor setup for measurement, 3–35
light bulb part number, 1–2
Lightning Display, 3–56
K
line definition, 3–34
vertical scale, 3–34
waveform measurements, 3–34
Graticule light bulbs, replacement procedure, D–2
K-factor measurement
graticule illustration, 3–35
special graticule, 3–35
using Gain with, 3–35
H
L
Hardware installation, 1–5–1–11
Harmonic distortion, Glossary–2
Horiz Pos, using with MAG function, 3–36
Horizontal gain, calibration, 3–7
Horizontal scale, waveform graticule, 3–36
Hue measurement, with Vector Display, 3–53
Light bulb part number, 1–2
Lightning Display, 3–55, Glossary–2
creating from Pb, Pr, and Y, 3–55
interchannel timing measurement, 3–57
luminance gain measurement, 3–57
PbPr gain measurement, 3–57
Limit Cursors, for Gamut alarm, 3–32
Limit Format, in Configure GAMUT menu, 3–10
Line
I
selecting individual, 3–39
Incoming inspection procedure, 1–15
Inputs
selecting number of lines in sweep, 3–52
Line Length, Serial format checks, 3–48
Line Select, 3–39
data cursor correlation, 3–39
selecting fields, 3–39
use with Digital Waveform display, 3–18
Line/Field, Sweep, 2–4
Lissajous, patterns, 3–1–3–3
List, Digital List display, 3–14
Loop-through inputs, 2–7
LPASS, Filter menu selection, 3–27
Luminance, Glossary–3
rear panel, 2–7
selecting SER A or B, 3–58
Installation, 1–5–1–14
accessory drawer, 1–10
BNC connector compatibility, 1–14
cabinet selection, 1–5
connecting power, 1–11
hardware, 1–5
in a serial video system, 1–12
installing in a rack, 1–9
line termination, 1–13
Index–4
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Index
shifting with Line Select, 3–39
Multi-pin connectors, 2–7
Multiple Display, 3–41
M
MAG, using with Timing Cursors, 3–13
Magnified, Sweep, 2–4
Manual, Service part number, 1–3
Manuals, related, xi
Markers, using, 3–13
N
Naming, Preset, 3–43
NTSC
Measurement
amplitude with Vector Display, 3–54
cable commands, C–3
cable length, 3–49
Arrowhead Gamut graticule, 3–31
setting alarm cursor, 3–32
cable length for firmware V1.X, 3–47
cable loss, 3–49
O
calculating actual rise time, 3–25
Cursor measurements, 3–13
error rate using AP CRC, 3–51
error rate using EDH, 3–50
Eye Pattern aberrations, 3–23–3–29
Eye Pattern amplitude, 3–22–3–29
Eye Pattern jitter, 3–26
Optional Accessories, 1–3
Options, 1–3
Other ANC Data, Serial format selection, 3–46
Output, setting monitor out, 3–11
Outputs
Jitter Out, 2–7
MON OUT (Y/G - PB/B - PR/R), 2–7
rear panel, 2–7
Serial Out, 2–7
Eye Pattern measurements, 3–22–3–29
Eye Pattern rise time, 3–24–3–29
graticule, 3–34
Overlay, Eye Pattern trigger mode, 3–20
interchannel timing with Lightning Display, 3–57
Jitter Display, 3–37
luminance gain with Lightning Display, 3–57
observing word correlated behavior, 3–27
PbPr gain with Lightning Display, 3–57
phase error with Audio display, 3–4
phase with Vector Display, 3–54
serial data error rate, 3–50
serial signal level for V1.X firmware, 3–47
source signal level, 3–49
P
Packaging, shipping carton, 1–10
PAL
Arrowhead Gamut graticule, 3–31
setting alarm cursor, 3–32
Parade Display, 3–41
filter selection, 3–27
PbPr
vector timing with Vector Display, 3–55
Measuring serial sources, 3–22–3–29
Mechanical installation, 1–5
MENU, buttons, 2–4
Gain measurement with Lightning Display, 3–57
plotted against Luminance, 3–55
Vector Display, 3–53
Menu, 1–2
PBPR Offset, in Configure WFM/VEC menu, 3–9
Performance requirements, Specifications, A–1
Phase error, audio, 3–4
Physical Characteristics, A–9
Picture Display, 3–42
CRT, 3–12
Cursor, 3–13
Filter, 3–27
Gain, 3–28
Line Select, 3–39
Preset, 3–43
use, 2–5
with bezel buttons, 2–5
Power
AC requirements, 1–11
requirements, 2–6
POWER (Switch), 2–5
Power connector, 2–6
Power cord
with bezel knobs, 2–5
Menus, Using the Menus, 2–5
Missing Video, in Configure SER ALARM menu, 3–11
Mode, in Configure EYE PATTERN menu, 3–10
MON OUT
Option A1, 1–3
Option A2, 1–3
Option A3, 1–3
Option A4, 1–3
configuring as GBR or YPbPr, 3–11
Format Configure menu, 3–11
Index–5
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Index
Option A5, 1–3
options, 1–3
CURsor:CONTROL, C–17
CURsor:SELect, C–16
DGTL? settings, C–20
DGTL:BASE, C–24
Power, connecting, 1–11
PR to Y Timing, 3–57
Preset, renaming, 3–43
Preset Menu, 3–43
Recall, 3–43
DGTL:DATA?, C–21
DGTL:FREEZE, C–23
DGTL:REGion?, C–21
DGTL:VDATA?, C–22
DGTL:VIDmode, C–23
Display positioning commands, C–44
DISPlay:FOCUS:, C–30
DISPlay:INTENSITY, C–26
DISPlay:INTENSITY:READ, C–27, C–28
DISPlay:PIXB, C–28
Recover, 3–43
Rename, 3–43
Return, 3–43
Store, 3–43
Procedure, Functional Check, 1–17
Product Description, 1–1
DISPlay:PIXC, C–28
R
DISPlay:SCALEillum, C–29
DISPlay:SINGLE, C–25
DISPlay:TRACEROT, C–29
Errors messages, C–31
ESR?, C–31
EYe:CLOckhpf, C–34
EYe:DISPlay, C–33
EYe:MODE, C–33
Rack Adaptor, 1–9
Readout
in Configure JITTER menu, 3–10
setting brightness, 3–12
Rear panel
connectors, 2–6
Jitter Out, 2–7
FILTer, C–51
loop-through inputs, 2–7
MON OUT (Y/G - PB/B - PR/R), 2–7
multi-pin connectors, 2–7
outputs, 2–7
power connector, 2–6
Remote, 2–7
GAIN:W_V_STATE, C–35
GAMut:ALarm:DISPlay, C–9
GAMut:ALarm:TRIGger, C–9
GAMut:GRATicule, C–8
INput:CHANnel, C–39
INput:PBPROFFSet, C–39
INput:SOUrce, C–38
Jitter magnitude query, C–41
JITter:HPFILter, C–40
JITter:UNITS, C–40
LINESelect commands, C–42
Marker cursor control, C–17
Menu selection commands, C–50
NTSC or PAL setting, C–10
PORT:ECHO, C–52
PREset:NAMES, C–47
PREset:REcall, C–46
PREset:STORE, C–46
REFErence:MODE, C–6
ROTEST, C–52
Serial number query, C–53
SERial:ALarm, C–13
SERial:DISPlay, C–12
SERial:EAVSAV, C–13
SERial:MENU, C–11
RS-232 connector, 2–7
Serial Out, 2–7
Recall, Preset function, 3–43
Recalling, Preset front panel settings, 3–43
Recover, Preset function, 3–43
Recovering from zero brightness readout, 3–12
REF, setting reference mode, 3–44
Reference, 3–1
REF button, 2–4
setting mode, 3–44
Related manuals, xi
REMOTE
connector pin assignments, B–2
description, B–1
rear panel overview, 2–7
Remote Commands, C–1
AFC, C–51
ALLEV?, C–31
ARROWhead:FORMat, C–8
ARROWhead:LIMIT:NTSC, C–7
ARROWhead:LIMIT:PAL, C–7
buffering code, C–55
CALSignal:ENable, C–53
SERial:MONitor, C–12
SLM:CABle, C–3
SLM:LENGTH?, C–5
Index–6
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Index
SLM:LEVEL?, C–5
amplitude, 3–22
SLM:RCVR, C–4
jitter, 3–26
SLM:SOURCE?, C–4
rise time, 3–24
SWEEP:MAG, C–49
SWEEP:TIMING, C–48
word correlated behavior, 3–27
Serial format, 3–44
10/8 Bits, 3–46
User Interface menu commands, C–14
Variable GAIN state for Lightning display, C–37
Variable GAIN state for the WFM and VEC displays,
C–36
Variable GAIN value for the Lightning display, C–37
Variable GAIN value for WFM and VEC displays,
C–36
ANC Checksum, 3–49
ANC Parity, 3–48
AP CRC ERR SEC, 3–46
APPROX CABLE LENGTH, 3–49
Approximate Cable Length for firmware V1.X, 3–47
Audio, 3–46
CABLE screen, 3–49
VECtor:BARS, C–10
CABLE TYPE, 3–50
VECtor:GRAT, C–11
CABLE TYPE for firmware V1.X, 3–47
Changed Since Reset, 3–46
Data Range, 3–48
Voltage and timing cursor positioning, C–18
Voltage and timing cursor tracking, C–19
Remote operation, B–1
DISPLAY, 3–50
Display, 3–46
Rename, Preset function, 3–43
Renaming, Preset, 3–43
Elapsed Time, 3–46
Repackaging for Shipment, 1–10
Replacing
F1 AP CRC Value, 3–46
F2 AP CRC Value, 3–46
FF CRC ERR SEC, 3–46
Field Length, 3–48
525/625 Lines, 3–46
Format Error, 3–46
fuse, D–1
graticule light bulbs, D–2
Reset, Serial format checks, 3–46
Restoring, front panel settings from Preset, 3–43
RGB, setting Gamut alarm, 3–33
RGB gamut, Diamond Display, 3–29
Rise time
FORMAT screen, 3–48
Line Length, 3–48
Other ANC Data, 3–46
RECEIVER POWER LEVEL, 3–49
Reset, 3–46
calculating actual, 3–25
serial channel measurements, 3–24
RS232
SAV Placement, 3–48
Serial Signal Level for firmware V1.X, 3–47
Signal Present, 3–46
connector pin assignments, B–1
rear panel overview, 2–7
SOURCE SIGNAL LEVEL, 3–49
STATUS screen, 3–45
STATUS screen for firmware V1.X, 3–47
Stuck Bits, 3–46
S
Safety Certification Compliance, A–10
Safety Standards, A–10
Serial readout screen
Sample, selection using Line Select, 3–39
SAV Placement, Serial format checks, 3–48
SAV–EAV, in Configure WFM/VEC menu, 3–9
Saving, front panel settings as Preset, 3–43
Screen, filter part number, 1–2
SER A/B inputs, 2–7
SER ALARM, configuration menu, 3–11
SERIAL, 2–4
Serial A Input, Loop-through input, 2–7
SERIAL A/SERIAL B, 2–4
Cable, 3–49
Format, 3–48
Status, 3–45
Status for firmware V1.X, 3–47
Serial Signal Level, serial format for firmware V1.X,
3–47
Service manual, 1–3
Settings, saving as Preset, 3–43
1700F00 Cabinet, 1–6
1700F02 Portable cabinet, 1–6
1700F04 side-by-side rack mount assembly, 1–6
75 ohm terminator, 1–2
Shipping instrument, 1–10
Serial Alarm, configure menu, 3–11
Serial B input, Loop-through input, 2–7
Serial channel measurements
aberrations, 3–23
Index–7
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Index
Signal
U
receiver power level, 3–49
source signal level, 3–49
Signal Present, Serial format selection, 3–46
Software Version Number, 3–12
Specifications, A–1
User Service, D–1
cleaning, D–3
cleaning the fan filter, D–1
replacing graticule light bulbs, D–2
replacing the CRT filter, D–3
replacing the fuse, D–1
Using, Menus, 2–5
Certifications and Compliances, A–11
Electrical Specifications, A–1
Environmental Characteristics, A–9
Physical Characteristics, A–9
Safety Certification Compliance, A–10
Safety Standards, A–10
V
STANDARD, Format configure menu, 3–11
Standard (NTSC/PAL), Glossary–3
Standard accessories, 1–2
Standby mode, 1–11
Status, automated serial format, 3–44
Status Screen, 3–45
Variable Gain, 3–28
Vector Display, 3–53
amplitude measurement, 3–54
flesh tone indicator, 3–54
graticule, 3–54
how Pb and Pr create display, 3–53
in Functional Check, 1–21
Lightning Display, 3–55
phase measurement, 3–54
timing measurement, 3–55
vector timing measurement, 3–55
Vectorscope, Vector Display, 3–53
Version, determining software version, 3–12
Vertical
Status Screen for firmware V1.X, 3–47
Store, Preset function, 3–43
Stuck Bits, Serial format selection, 3–46
SWEEP
Line/Field, 2–4
MAG, 2–4
Sweep, 3–52
SYNC, Format configure menu, 3–11
Sync reference, setting, 3–44
Gain, 3–28
gain calibration, 3–7
Vertical scale, waveform graticule, 3–34
Video
T
10 Eye, Eye Pattern trigger mode, 3–21
10/8 Bits, Serial format selection, 3–46
Termination, line discussion, 1–13
Terminator, 75 ohm part number, 1–2
Time, readout on Serial format screen, 3–46
Time per div
mode in Digital List display, 3–14
mode in Digital Waveform display, 3–16
viewing with Picture Display, 3–42
VIDEO IN, 2–4
Serial Inputs, 3–58
setting mode in Configuration menu, 3–58
Voltage cursors, 3–13
setting, 3–36
setting with Sweep, 3–52
Timing
jitter measurement with Eye Pattern, 3–26
measurement with Bowtie, 3–6
Timing cursors, 3–13
W
Waveform
Digital Waveform display, 3–16
jitter, 3–38
Parade Display, 3–41
viewing jitter, 3–37
Trace
intensity, 3–12
rotation, 3–12
selecting number of lines, 3–52
Trigger
modes for Eye Pattern display, 3–20
Overlay mode for Eye Pattern, 3–20
2T Pulse to Bar, special graticule, 3–36
Waveform Display, 3–58
filter selection, 3–27
Waveform display, using Line Select, 3–58
Waveform graticule
Index–8
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Index
horizontal scale, 3–36
Word rate trigger, 3–21
vertical scale, 3–34
WFM AS, in Configure WFM/VEC menu, 3–9
WFM/VEC, configure menu, 3–9
Word correlated behavior, serial channel measurements,
3–27
Y
YPbPr Parade, 3–41
Index–9
WFM 601A, WFM 601E & WFM 601M User Manual
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Index
Index–10
WFM 601A, WFM 601E & WFM 601M User Manual
Download from Www.Somanuals.com. All Manuals Search And Download.
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