Contents
HP E1368A/69A/70A Modules User’s Manual
HP E1368A/69A/70A Modules User’s Manual Contents
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Notes
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Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-
Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Tech-
nology (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of ship-
ment. Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes a part of)
other HP products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which
prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard (HP). Buyer shall pre-
pay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping
charges, duties, and taxes for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that product. HP does not warrant that the operation of the product, or software, or firmware will be uninterrupted
or error free.
Limitation Of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied prod-
ucts or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or im-
proper site preparation or maintenance.
The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer’s
circuitry or malfunctions of HP products that result from the Buyer’s circuitry. In addition, HP does not warrant any damage that oc-
curs as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CON-
TRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WAR-
RANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. This docu-
ment contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photo-
copied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. HP assumes no
responsibility for the use or reliability of its software on equipment that is not furnished by HP.
Restricted Rights Legend
Use, duplication or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
Technical Data and Computer Software clause in DFARS 252.227-7013.
Hewlett-Packard Company
3000 Hanover Street
Palo Alto, California 94304 U.S.A.
Rights for non-DOD U.S. Government Departments and Agencies are as set forth in FAR 52.227-19 (c) (1,2).
HP E1368A, E1369A, E1370A Microwave Switch and Driver Modules User’s Manual
Edition 3
Copyright © 1995 Hewlett-Packard Company. All Rights Reserved.
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Documentation History
All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edi-
tion number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of
the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this documentation his-
tory page.
Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . December, 1989
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August, 1990
Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . June, 1995
Safety Symbols
Instruction manual symbol affixed to prod-
Alternating current (AC).
Direct current (DC).
uct. Indicates that the user must refer to the
manual for specific WARNING or CAU-
TION information to avoid personal injury
or damage to the product.
Indicates hazardous voltages.
Indicates the field wiring terminal that must
be connected to earth ground before operat-
ing the equipment—protects against electri-
cal shock in case of fault.
Calls attention to a procedure, practice, or
condition that could cause bodily injury or
death.
WARNING
CAUTION
Calls attention to a procedure, practice, or con-
dition that could possibly cause damage to
equipment or permanent loss of data.
Frame or chassis ground terminal—typi-
cally connects to the equipment’s metal
frame.
or
WARNINGS
The following general safety precautions must be observed during all phases of operation, service, and repair of this product.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the product. Hewlett-Packard Company assumes no liability for the customer’s failure to
comply with these requirements.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal
of covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the
equipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless
you are qualified to do so.
DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been im-
paired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Of-
fice for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for
service and repair to ensure that safety features are maintained.
6
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Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name:
Hewlett-Packard Company
Loveland Manufacturing Center
Manufacturer’s Address:
815 14th Street S.W.
Loveland, Colorado 80537
declares, that the product:
Product Name:
HP E1368A Microwave Switch, E1369A Microwave Switch Driver,
E1370A Microwave Switch/Attenuator
Model Number:
Product Options:
E1368A, E1369A, E1370A
All
conforms to the following Product Specifications:
Safety:
IEC 1010-1 (1990) Incl. Amend 1 (1992)/EN61010-1 (1993)
CSA C22.2 #1010.1 (1992)
UL 1244
EMC:
CISPR 11:1990/EN55011 (1991): Group1 Class A
IEC 801-2:1991/EN50082-1 (1992): 4kVCD, 8kVAD
IEC 801-3:1984/EN50082-1 (1992): 3 V/m
IEC 801-4:1988/EN50082-1 (1992): 1kV Power Line
.5kV Signal Lines
Supplementary Information: The product herewith complies with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC and carries the CE-marking accordingly.
Tested in a typical configuration in an HP B-Size VXI mainframe.
April, 1995
Jim White, QA Manager
European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department
HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX +49-7031-14-3143).
HP E1368A, E1369A, E1370A Microwave Switch and Driver Modules User’s Manual
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Notes
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10 HP E1368A, E1369A, E1370A Microwave Switch and Driver Modules User’s Manual
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Chapter 1
Getting Started with the HP E1368A/69A/70A
Using This Chapter
This chapter describes the Microwave Switch modules, and contains
information on how to program them using SCPI (Standard Commands for
Programmable Instruments) commands. This chapter contains the
following:
• Microwave Switch Description . . . . . . . . . . . . . . . . . . . . . . . Page 11
• Instrument Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
• Programming the Microwave Switch . . . . . . . . . . . . . . . . . . Page 14
• Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Microwave Switch Description
All three Microwave Switch modules provide switching of up to five
microwave coaxial switches or channels. The difference between the HP
E1368A Microwave Switch, the HP E1369A Microwave Switch Driver,
and the HP E1370A Microwave Switch/Attenuator Driver modules are
described below:
• The HP E1368A Microwave Switch is a 3-channel, single-pole,
double-throw coaxial switch module. The three coaxial switches
provided have excellent electrical characteristics for 502
transmission systems operating from DC to 18 GHz. The module
panels are numbered 00, 01, and 02 to indicate the channel number
of each coaxial switch installed.
• The HP E1369A Microwave Switch Driver is identical to the HP
E1368A, except the coaxial switches are not installed. The module
panel has three cutouts and various mounting holes that allow the
user to install up to three 3-port, 4-port, or 5-port, 42Vpk drive level
coaxial switches. Drive level voltage can be internal (+5 and
+12Vdc) or external (42Vpk). The module panel is numbered 00,
01, and 02 to indicate the channel number of each coaxial switch.
Channel 03 and 04 are not labeled on the panel. Up to five coaxial
switches can be controlled (e.g. three internal, two external; five
external; etc) using the 14-pin connector.
• The HP E1370A Microwave Switch/Attenuator Driver is identical to
the HP E1369A, except the module panel and mounting holes have
been modified to allow the user to install one Single-pole,
Multi-throw Switch or one Step Attenuator. Because of the size of
the switches and the attenuators, the module takes up two B-size
slots. Drive level voltage can be internal (+5 and +12Vdc) or
external (42Vpk). Up to a Single-pole, Six-throw Switch can be
mounted on to the assembly or used externally using the 14-pin
connector.
Chapter 1
Getting Started with the HP E1368A/69A/70A 11
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Figure 1-1. HP Microwave Switch Block Diagram
12 Getting Started with the HP E1368A/69A/70A
Chapter 1
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Power Supply Power to operate the coaxial switches can be supplied internally or
externally, dependent on the type of coaxial switch used.
Circuit
• Internal voltages of either +5V or +12V can be selected using
jumpers on the board. These voltages are routed through the module
from the mainframe backplane.
Note
Check mainframe power availability before using internal voltages.
• External voltages of up to 42Vpk can be connected using the
EXTernal POWER terminal block.
Caution
MAXIMUM VOLTAGE. The maximum voltage that may be
applied to the EXTernal POWER terminal is 42Vpk. Remove the
F3 fuse when using external switch power.
MAXIMUM CURRENT. The maximum current that the control
circuit can accommodate is 1 amp per switch. Maximum
current also depends on the output capacity of the mainframe
or power supply used.
HP E1368A The HP E1368A Microwave Switch module contains three HP 33311B
Option 011 (8672B Option 005 and 100) microwave Switches:
Switches
• Broad bandwidth (DC - 18 GHz).
• High isolation (>90 dB to 18 GHz).
• Excellent repeatability (typically 0.03 dB after 1,000,000 switchings).
• Internal 50Ω terminations.
These coaxial switches allow +5V coil voltage electrical characteristics
(drive voltage) operation instead of the standard +24V. This is necessary
since the Microwave Switch module provides only +5V or +12V for driving
microwave switches.
These coaxial switches are break-before-make switches controlled by a
latching solenoid. Internal coil contacts open and remove coil voltage after
a switching operation to minimize the amount of heat dissipated near the
switch contacts.
When a coil is energized and a switching operation occurs, a pivot armature
in the microwave switch also operates both sets of contacts, either closing
the switch or connecting it to the 50Ω termination.
Chapter 1
Getting Started with the HP E1368A/69A/70A 13
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Instrument Definition
HP plug-in modules installed in an HP mainframe or used with an HP
command module are treated as independent instruments each having a
unique secondary HP-IB address. Each instrument is also assigned a
dedicated error queue, input and output buffers, status registers and, if
applicable, dedicated mainframe/command module memory space for
readings or data. An instrument may be composed of a single plug-in
module (such as a counter) or multiple plug-in modules (for a switchbox or
scanning voltmeter instrument).
Programming the Microwave Switch
To program the modules using SCPI commands, you must select the
controller Module language, interface address, and appropriate commands.
See the HP 75000 Series B Installation and Getting Started Guide or the
appropriate HP Command Module Manual for interface addressing and
controller language information of Microwave Switch modules in a
switchbox or scanning voltmeter configuration.
Note
This discussion applies to SCPI programming. See Appendix B
(Microwave Switch Registers) for details on Microwave Switch modules
registers.
Selecting Channels: To address specific channels within a Microwave
Switch module in a switchbox, you must:
• send the appropriate SCPI command string to the switchbox (e.g.,
CLOSe, OPEN, etc.). For the Microwave Switch modules, use the
CLOSe command to connect the 2-port to the C-port. Use the OPEN
command to connect the 1-port to the C-port.
• specify the card number (01-99)
• specify the channel number (00-04)
channel_list
=
}
Card Numbers The card number identifies the module within a switchbox. The Microwave
Switch card number depends on the switchbox configuration (single-module
or multiple-module) set for the switches.
• Single-module. For a single-module switchbox, the card number is
always 01.
• Multiple-module. For a multiple-module switchbox, the switch
module with the lowest logical address is always card number 01.
The card number with the next successive logical address is 02, and
so on. Figure 1-2 illustrates the card numbers and logical addresses
of a typical multiple-module switchbox.
14 Getting Started with the HP E1368A/69A/70A
Chapter 1
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The logical addresses noted in Figure 1-2 apply to modules installed in an
HP 75000 Series B Mainframe (HP Model Number E1300/E1301) or in a
mainframe with an HP E1405/E1406 Command Module. See the HP 75000
Series B Installation and Getting Started Guide or the appropriate HP
Command Module Manual for more information on switchboxes and logical
addressing.
Figure 1-2. Card Numbers for Multiple-Module Switchboxes
Channel Numbers The channel number identifies the channel within a module. The
Microwave Switch channel number depends on the module (HP E1368A
Microwave Switch or HP E1369A Microwave Switch Driver).
• HP E1368A. Valid channel numbers are 00-04 (channels 03 and 04
are valid but not connected).
• HP E1369A. Valid channel numbers are 00-04.
• HP E1370A. Valid channel numbers are 00-04.
Channel Address For the Microwave Switch Modules, the channel address (channel_list) is in
the form:
• (@ccnn) for a single channel
• (@ccnn, ccnn) for multiple channels
• (@ccnn:ccnn) for sequential channels
• (@ccnn:ccnn, ccnn:ccnn) for groups of sequential channels
• or any combination of the above
where "cc" is the card number and "nn" is the channel number. For
example, command string to close channel 02 of card number 1 is:
CLOSe (@0102)
Since "cc" (the card number) must be sent, it becomes part of the channel
number. Also, you can ignore leading zeros in the card numbers. Thus, to
close channel 02, send "102" instead of "0102". To close the above channel,
execute:
CLOSe (@102)
Chapter 1
Getting Started with the HP E1368A/69A/70A 15
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SCPI Command You can send SCPI commands in either short or long form. Refer to
Chapter 4 for more information. A long form example is:
Format Used in
This Manual
CLOSe (@102)
The same command shown without the lower case letters is the short form.
The command then becomes:
CLOS (@102)
Some commands in this manual are shown with brackets ([ ]). These are
implied or optional commands that you do not have to execute. For
example, the ROUTe command is an implied command and is shown in this
manual as:
[ROUT:]CLOS (@102)
Thus, to execute these commands, simply enter:
CLOS (@102)
Initial Operation
Use the following program example to verify initial Microwave Switch
operation by closing a channel and querying channel closure. The example
first resets the switchbox and then closes channel 02 of a single Microwave
Switch module (card number 1) in the switchbox. The program next queries
the channel closure state. A returned "1" shows that the command to close
the channel has been sent to the switchbox. A returned "0" shows that the
command to close the channel has not been sent to the switchbox.
The computer used in the example is an HP Series 200/300 computer with
HP BASIC as the program language. The computer interfaces to the
mainframe using the Hewlett-Packard Interface Bus (HP-IB).* The HP-IB
interface select code is 7, the HP-IB primary address is 09, and the HP-IB
secondary address is 15. Refer to the HP 75000 Series B Installation and
Getting Started Guide for addressing information.
Example: Reset the switchbox and close channel 02.
10 OUTPUT 70915;"*RST"
!Resets the module; opens all
channels.
20 OUTPUT 70915;"CLOS (@102)"
30 OUTPUT 70915;"CLOS? (@102)"
40 ENTER 70915;Value
!Close channel 02.
!Query channel 02.
!Enter results into value.
50 PRINT Value
!Display results (should return
"1").
60 END
!Terminate program.
* HP-IB is Hewlett-Packard’s implementation of IEEE Std 488.1-1984
16 Getting Started with the HP E1368A/69A/70A
Chapter 1
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Chapter 2
Configuring the HP E1368A/69A/70A
Modules
Using This Chapter
This chapter shows how to connect external wiring to the Microwave
Switch Modules connectors, and how to configure the module for operation.
• Setting the Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
• Selecting the Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . Page 19
• Installing Switches on the HP E1369A . . . . . . . . . . . . . . . . . Page 20
• Installing a Switch or Attenuator on the
HP E1370A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 26
Warnings and Cautions
Warning
SHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install, remove, or
configure the Microwave Switch modules. Before you remove
any installed module, disconnect AC power from the mainframe
and from other modules that may be connected to the
Microwave Switch.
Caution
MAXIMUM POWER. The maximum power that may be applied
to any SMA input connector is 1 W (CW). The maximum voltage
that may be applied to the EXTERNAL B+ terminal is 42Vpk.
CONNECTING +5V/+12V. For the Microwave Switch, the
mainframe backplane +5V is fused at 4A, and the +12V line at
4A. The total current drawn by all coaxial switches connected
to the Microwave Switch module must not exceed the fuse
rating of the supplies (mainframe and/or external) used.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. To prevent damage to the electrical
components in the Microwave Switch modules, observe
anti-static techniques whenever removing a module from the
mainframe or whenever working on a module.
Chapter 2
Configuring the HP E1368A/69A/70A Modules 17
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Setting the Address Switch
The logical address switch (LADDR) factory setting is 120. You may have
changed the setting during module installation. Valid address values are
from 0 to 255. If the Microwave Switch modules are used in a HP
E1300/E1301 Mainframe, refer to the HP 75000 Series B System
Installation and Getting Started Guide for addressing information.
Otherwise, use Figure 2-1 to change the setting.
Note
The address switch selected value must be a multiple of 8 if the module is
the first module in a "switchbox" used in a VXIbus mainframe, and being
instructed by SCPI commands.
Figure 2-1. Logical Address Selection
18 Configuring the HP E1368A/69A/70A Modules
Chapter 2
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Selecting the Interrupt Priority
The Microwave Switch modules generate interrupts after a channel has been
closed or opened. These interrupts are sent to, and acknowledgments are
received from, the slot 0 module via the VXIbus backplane interrupt lines.
For most applications where the Microwave Switch modules are installed in
an HP 75000 Series B or Series C mainframe, these jumpers do not have to
be moved. This is because the VXIbus interrupt lines have the same
priority and interrupt priority is established by installing modules in slots
numerically closest to the slot 0 module. Thus, slot 1 (internal to the Series
B mainframe) has a higher priority than slot 2 (also internal), slot 2 has a
higher priority than slot 3, etc.
Refer to Figure 2-2 to change the interrupt priority. You can select seven
different interrupt priority levels. Level 1 is the lowest priority and Level 7
is the highest priority. The Module’s factory setting is Level 1. To change,
clip out and remove two jumpers from the old priority location. Install and
solder two new jumpers in the new priority location (Figure 2-2 shows a
priority change from 1 to 7).
Note
Both jumper locations must have the same interrupt priority level jumper
installed. Changing the priority level jumpers is not recommended. Do not
change unless specifically instructed to do so.
NOTE:
In this example, the priority
jumpers are moved from
position 1 to position 7
(lowest priority to highest
priority).
Figure 2-2. Interrupt Priority Selection
Chapter 2
Configuring the HP E1368A/69A/70A Modules 19
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Installing Switches on the HP E1369A
Because the HP E1369A Microwave Switch modules do not have
Microwave Switches installed by the factory, it is necessary to install or
connect switches before operating. Determine the number of switches, and
whether the switches are to be installed on, or connected to, the module and
proceed as instructed below.
Installing Switches Installation described for up to three coaxial switches (channels 00-02) is
below. Figure 2-3 shows the wiring diagram and mounting hole centers for
each switch installed.
on the Module
HP SWITCHES. The following 5V HP 333XX series and HP 876X series
switches will function in the HP E1369A Microwave Switch module.
Note
The corresponding HP 876X and 333XX series switches shown in the table
below are electrically and physically identical. The HP 8761, 8766 (33363),
8767 (33364),8768 (33365),8769 (33366) series coaxial switches will not
function in the HP E1369A Microwave Switch module because the switch
coils are not split (separate for each contact).
HP Part Number
Frequency
Characteristic Ports
Impedance
Internal 50Ω Auto Coil
MTG
Hole
Termination Interrupt
33311B/011 or 8762B/005/100
33311C/011 or 8762C/005/100
33312B/011 or 8763B/005/100
33312C/011 or 8763C/005/100
33313B/011 or 8764B/005/100
33313C/011 or 8764C/005/100
33314A/011 or 8765A/005/100
33314B/011 or 8765B/005/100
33314C/011 or 8765C/005/100
DC to 18 GHz
DC to 26.5 GHz
DC to 18 GHz
DC to 26.5 GHz
DC to 18 GHz
DC to 26.5 GHz
DC to 4 GHz
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
3
3
4
4
5
5
3
3
3
All ports
All ports
One port
One port
No ports
No ports
No ports
No ports
No ports
Yes
Yes
Yes
Yes
Yes
Yes
No
C
C
D
D
D
D
B
B
B
DC to 20 GHz
DC to 26.5 GHz
No
No
NON-HP SWITCHES. K&L Microwave Inc., Dynatech Microwave
Technology Inc., and RLC Electronics Inc. currently manufacture split coil
coaxial switches that will physically mount in the HP E1369A Microwave
Switch module rear panel. All switches mount using the "A" hole centers
(see Figure 2-3). When selecting switches, refer to the diagram shown in
Figure 1-1 to verify that the switch will electrically function in the HP
E1369A Microwave Switch module. Remember, switches must have split
coil operation with 42V maximum drive level.
Caution
The maximum current that the control circuit can accommodate
is 1 amp per switch. Maximum current also depends on the
output capacity of the mainframe or power supply used.
20 Configuring the HP E1368A/69A/70A Modules
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After selecting the coaxial switch, install as follows:
1. Position the coaxial switch behind the channel 00 panel cut-out.
Secure to rear panel using two M2.5 x .45 metric screws
(P/N 0515-1373).
2. Route the 3-wire cable (P/N E1368-61601) from J1 to the coaxial
switch terminals. Solder the "RED" wire to pin 1. Solder the "YEL"
wire to pin C. Solder the "ORN" wire to pin 2.
Note
On the HP 33314 (8765) series switches, it is necessary to jumper the two C
terminals so that both connect to the "YEL" wire.
3. Repeat steps 1 and 2 with remaining coaxial switches. The channel
01 switch connects to J2 connector, and channel 02 connects to J3.
Caution
Do not leave an unused 3-wire cable installed in J1, J2, or J3 if
a coaxial switch is not installed. The center conductor of all
three connectors is connected to the switch operating voltage
at all times. Contact of this conductor to ground may cause the
fuse to open, or damage to the power supply or module.
4. Route the 3-wire cables behind the coaxial switches as not to catch or
snag on any objects during module installation in the mainframe or
control module (see Figure 2-3).
5. Select correct switch operating voltages (see “Selecting Switch
Power” later in this chapter).
Chapter 2
Configuring the HP E1368A/69A/70A Modules 21
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Figure 2-3. Microwave Switch Installation
22 Configuring the HP E1368A/69A/70A Modules
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Connecting Connection of up to five coaxial switches (channels 00-04) is described
below. Figure 2-4 shows the wiring diagram for each switch connected.
Switches External
to the Module
Caution
The maximum current that the control circuit can accommodate
is 1 amp per switch. Maximum current also depends on the
output capacity of the mainframe or power supply used.
After selecting the coaxial switches, connect to the 14-pin connector as
follows:
1. Route an 11-wire cable (not-supplied) from the 14-pin connector on
the Microwave Switch module to the switch location. Route the
wires through the panel holes as not to catch or snag on any objects
during module installation in the mainframe or control module.
2. Connect all C+ terminals on all the coaxial switches to pin 6.
3. Connect CH00 through CH04 switch terminals as required.
CH00 1 terminal to pin 13, and the 2 terminal to pin 2.
CH01 1 terminal to pin 11, and the 2 terminal to pin 5.
CH02 1 terminal to pin 3, and the 2 terminal to pin 9.
CH03 1 terminal to pin 4, and the 2 terminal to pin 10.
CH04 1 terminal to pin 7, and the 2 terminal to pin 8.
4. Select correct switch operating voltages (see “Selecting Switch
Power” later in this chapter).
Figure 2-4. Microwave Switch Connection
Chapter 2
Configuring the HP E1368A/69A/70A Modules 23
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Selecting Switch After the coaxial switches have been installed (refer to “Installing Switches
on the HP E1369A” earlier in this chapter), the correct operating voltage
must be selected. See installed switch specifications.
Power
The Microwave Switch modules are capable of providing +5V (set at
factory) or +12V using the mainframe power supply, or external voltages of
up to 42Vpk can be connected. Determine the required operating voltage
and proceed as instructed below. Refer to Figure 2-5 as required.
Caution
MAXIMUM CURRENT. The maximum current that the control
circuit can accommodate is 1 amp per switch. Maximum
current also depends on the output capacity of the mainframe
or power supply used.
Internal Power Verify that the F3 fuse (P/N 2110-0712) is installed. Position jumpers as
instructed:
• For 5V, jumper JM2 installed, and jumper JM151 removed.
• For 12V, jumper JM151 installed, and jumper JM2 removed.
External Power Verify that the F3 fuse (P/N 2110-0712) is removed (unsolder if necessary).
Connect the positive lead to EXT B+ on TB1, and the negative lead to EXT
GND on TB1. Connect leads to external power supply. Observe polarity.
Caution
MAXIMUM VOLTAGE. The maximum voltage that may be
applied to the EXTernal POWER terminal is 42Vpk.
• Maximum wire size is No. 16 AWG. Wire ends should be stripped 6
mm (~ 0.25 in.) and tinned to prevent single strands from shorting
adjacent terminals.
• It is recommended that each channel wire be identified (color coded
or marked) as the connection is not visible when the Microwave
Switch module is installed.
• Verify that wires make good connections on screw terminals.
24 Configuring the HP E1368A/69A/70A Modules
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Figure 2-5. Selecting Switch Voltage
Connecting Field Figure 2-6 shows the internal switch diagram for the various HP 3-port,
4-port, and 5-port coaxial switches. All switches are shown in the "OPEN"
position. To minimize loss at high frequencies, use the following guidelines
when making connections.
Wiring
Cabling Guidelines For frequencies to 18 GHz, use a good quality flexible type cable and SMA
connectors. For frequencies 18 GHz, use semi-rigid type cable and APC 3.5
connectors.
Figure 2-6. Switch Configurations
Chapter 2
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Installing a Switch or Attenuator on the HP E1370A
Microwave Switch/Attenuator Card
Because the HP E1370A Microwave Switch/Attenuator modules do not
have a Microwave Switch of Attenuator installed by the factory, it is
necessary to install or connect a switch or attenuator before operating.
Determine whether the switch or attenuator is to be installed on, or
connected to, the module and proceed as instructed below.
Installing a Switch Installation of a Microwave Switch of Attenuator is described below.
Figure 2-7 shows the wiring diagram and mounting hole centers for the
switch of attenuator installed.
or Attenuator on
the Module
HP SWITCHES. The following 5V HP 3336xx series switches will
function in the HP E1370A Microwave Switch/Attenuator module.
HP Part Number
Frequency
Ports
33363K
33364K
33365K
33366K
DC to 26.5GHz
DC to 26.5GHz
DC to 26.5GHz
DC to 26.5GHz
Single-Pole, three-throw
Single-Pole, four-throw
Single-Pole, five-throw
Single-Pole, six-throw
Order all of the above with Option 011 (5 volt solenoid assembly) and
Option 008 (8 inch ribbon cable).
HP ATTENUATORS. The following 5V HP 3332X Step Attenuators will
function in the HP E1370A Microwave Switch/Attenuator module.
HP Part
Number
Frequency
Attenuation
Attenuation Step
Size
33320G
33320H
33321G
33321H
33322G
33322H
33323K
DC to 4 GHz
DC to 18 GHz
DC to 4 GHz
DC to 18 GHz
DC to 4 GHz
DC to 18 GHz
DC to 26.5 GHz
0 - 11 dB
0 - 11 dB
0 - 70 dB
0 - 70 dB
0 - 110 dB
0 - 110 dB
0 - 90 dB
1 dB
1 dB
10 dB
10 dB
10 dB
10 dB
10 dB
Order all of the above with Option 011 (5 volt solenoid operation) and
Option 008 (8 inch ribbon cable).
26 Configuring the HP E1368A/69A/70A Modules
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After selecting the coaxial switch or attenuator, install as follows:
1. Position the coaxial switch or attenuator behind the panel cut-out.
Use two M3.0 x 8mm (P/N 0515-0372) metric screws to secure the
rear panel. Use two 4-40 x .25 inch screws (P/N 2200-0521) to
secure the attenuator to the rear panel.
2. Route the ribbon cable from the Microwave Switch or Attenuator to
the 14-pin connector on the PC board.
3. Install the correct filler panel on the switch so that minimal air can
flow through the slot.
Figure 2-7. Microwave Switch/Attenuator Installation
Chapter 2
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Connecting Field Figure 2-8 shows the internal switch diagram for the various HP
single-pole, multi-throw switches. All switches are shown in the "OPEN"
position. To minimize loss at high frequencies, use the following guidelines
when making connections.
Wiring
• For frequencies up to 18 GHz, use a good quality flexible type cable
and SMA connectors.
• For frequencies >18 GHz, use semi-rigid type cable and APC 3.5
connectors.
Figure 2-8. Internal Switch Diagrams
Figure 2-9 shows the internal schematic of a single attenuator section.
Figure 2-9. Attenuator
28 Configuring the HP E1368A/69A/70A Modules
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Chapter 3
Using the HP E1368A/69A/70A Modules
Using This Chapter
This chapter uses typical examples to show how to use the Microwave
Switch modules. This chapter contains the following sections:
• Microwave Switch Commands . . . . . . . . . . . . . . . . . . . . . . . Page 29
• Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 30
• Switching Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 31
• Scanning Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 39
• Recalling and Saving States. . . . . . . . . . . . . . . . . . . . . . . . . . Page 43
• Detecting Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . Page 43
• Synchronizing the Microwave Switch. . . . . . . . . . . . . . . . . . Page 45
• Querying the Microwave Switch . . . . . . . . . . . . . . . . . . . . . . Page 46
Microwave Switch Commands
Table 3-1. Microwave Switch Commands in Chapter 3
Command
Command Description
INIT[:IMM]
Starts the scan sequence and closes the first channel in
the channel list.
OUTP[:STAT] ON
Enables the HP E1300A/E1301A "Trig Out" port to
output pulses.
[ROUT:]CLOS <channel_list>
[ROUT:]CLOS? <channel_list>
[ROUT:]OPEN <channel_list>
[ROUT:]SCAN <channel_list>
Close the channels in the channel list.
Query the state of the channels in the channel list.
Open the channels in the channel list.
Closes the channels in the channel list one at a time.
TRIG:SOUR BUS|EXT|HOLD|IMM Select the trigger source to advance the scan.
*CLS
*ESE
*RST
*SRE
Clears all switchbox Status Registers.
Enables the Event Status Register.
Sets the hardware and software to a known state.
Enables the Status Register.
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Reset Conditions
When the Microwave Switch is switched on or *RST (reset), all channels
are set to open (refer to Figure 2-6), and the current channel list for scanning
is invalidated. Table 3-2 lists the parameters and default values for the
functions described in Chapter 3.
Table 3-2. *RST (Reset) Default Conditions and Values
Parameter
ARM:COUNt
TRIGger:SOURce
Default
Description
1
Number of scanning cycles is one.
IMM Will advance scanning cycles automatically.
INITiate:CONTinuous OFF Number of scanning cycles is determined by
ARM:COUNt.
OUTPut:STATe
SCAN:MODE
SCAN:PORT
OFF "Trig Out" port on mainframe is disabled.
NONE Not used by the Microwave Switch modules.
NONE Not used by the Microwave Switch modules.
Caution
When the Microwave Switch is powered up, signals connected
to the normally closed (N/C) port will also be connected to the
output port (refer to Figure 2-6).
Note
The Microwave Switch modules do not support 4-wire resistance scanning
(FRES).
30 Using the HP E1368A/69A/70A Modules
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Switching Channels
For general purpose switch operation, you can connect or disconnect a
signal by opening or closing a specific channel.
• Use CLOS <channel_list> to close coaxial switch channel(s), and
OPEN <channel_list> to open coaxial switch channel(s). Refer to
Figure 2-6 for the various HP coaxial switch configurations.
<channel_list> has the form (@ccnn) where cc = card number
(01-99) and nn = channel number (00-04).
Example: Single This example illustrates closing and opening channel 00 in a HP E1368A
Microwave Switch module. Figure 3-1 shows how the channel is
configured.
Channel Switching
To close channel 00, execute:
CLOS (@100)
Connect channel 00 switch port 2
to port C, and terminate port 1 into
50; 1 is the card number and 00 is
the channel number.
To open channel 00, execute:
OPEN (@100)
Connect channel 00 switch port 1
to port C, and terminate port 2 into
50; 1 is the card number and 00 is
the channel number.
Figure 3-1. Example: HP E1368A Single Channel Switching
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Example: Single This example illustrates closing and opening coaxial switch channel 01 in a
HP E1369A Microwave Switch Driver module. For the example, the type
of switch installed in the HP E1369A is a HP 33311B (8762B), with 24Vdc
drive requirements. Figure 3-2 shows how to connect an external power
supply to the EXTernal POWER terminals to provide the necessary 24Vdc
drive for the coaxial switch.
Channel Switching
using EXTernal
POWER
To close channel 01, execute:
CLOS (@101)
Connect channel 01 switch port 2
to port C, and terminate port 1 into
50; 1 is the card number and 01 is
the channel number.
To open channel 01, execute:
OPEN (@101)
Connect channel 01 switch port 1
to port C, and terminate port 2 into
50; 1 is the card number and 01 is
the channel number.
Figure 3-2. Example: Single Channel Switching using External Power
32 Using the HP E1368A/69A/70A Modules
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Example: Channel This example illustrates how to make connections to different ports on the
HP E1370A Microwave Switch/Attenuator Driver and the HP 33366K
Single-pole, Six-throw Microwave Switch. Figure 3-3 shows how the board
and switch are configured.
Switching using the
E1370A and the
33366K Microwave
Switch
Figure 3-3. Example: HP E1370A Multiple Channel Switching
To connect C to Port 1, execute:
CLOS (@103)
To connect C to Port 2, execute:
OPEN (@103)
CLOS (@101)
Opens the connection to port 1.
Closes the connection to port 2.
To connect C to Port 3, execute:
OPEN (@101)
CLOS (@102)
Opens the connection to port 2.
Closes the connection to port 3.
To connect C to Port 2, execute:
OPEN (@102)
CLOS (@100)
Opens the connection to port 3.
Closes the connection to port 4.
To connect C to Port 2, execute:
OPEN (@100)
CLOS (@104)
Opens the connection to port 4.
Closes the connection to port 5.
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Note:
Because of the specific ribbon cable configurations, the channel number
does not directly correspond to the same port number. Table 3-3 maps the
port numbers to the corresponding channel numbers for all of the
HP333XXK Microwave Switches. For example, to connect C to port 3 on
the HP3365K Single-pole, Four-throw Switch, channel 2 would have to be
closed.
Table 3-3. Map of Channel Numbers to Port Numbers.
Switch
Part
Number
C (Connected to Port)
3
1
2
4
5
33363K
33364K
33365K
33366K
0
1
3
3
1
2
1
1
0
2
2
0
0
4
34 Using the HP E1368A/69A/70A Modules
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Example: Multiple This example illustrates closing and opening coaxial switch channels 00
through 04 in a HP E1369A Microwave Switch Driver module. For the
example, the switches are not installed on the HP E1369A card, and have
24Vdc drive requirements (HP 33311B or 8762B). Figure 3-4 shows how
to connect an external power supply to the EXTernal POWER terminals to
provide the necessary 24Vdc drive for the coaxial switches, and how to
connect the 14-pin cable to the external switches.
Channel Switching
using EXTernal
POWER
To close channels 00 through 04, execute:
CLOS (@100:104)
Connect channels 00, 01, 02, 03,
and 04 switch port 2 to port C, and
terminate port 1 into 50; 1 is the
card number and 00-04 are the
channel numbers.
To open channel 00 through 04, execute:
OPEN (@100:104)
Connect channels 00, 01, 02, 03,
and 04 switch port 1 to port C, and
terminate port 2 into 50; 1 is the
card number and 00-04 are the
channel numbers.
Figure 3-4. Example: Multiple External Channel
Switching using External Power
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Example: Transfer This example shows how to configure the HP E1368A Microwave Switch
to either route a signal directly to the output, or route it through an external
device before being output. For the example, two switches (channels 00
and 01) will be used. Figure 3-5 shows how to connect channels 00 and 01.
Switch Using Two
3-Port Switches
To route the signal directly, execute:
OPEN (@100,101)
Connects port C to port 1 of both
channels and routes the signal
directly to the output.
To route the signal through the external device, execute:
CLOS (@100,101) Connects port C to port 2 of both
channels and routes the signal
through the external device to the
output.
Figure 3-5. Example: Transfer Switch (two channel)
36 Using the HP E1368A/69A/70A Modules
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Example: Transfer This example shows how to configure the HP E1369A Microwave Switch
Driver with a 5-port switch (HP 33313 or 8764) installed, to either route a
signal directly to the output, or route it through an external device before
being output. For the example, one switch (channel 02) will be used.
Switch Using One
5-Port Switch
Figure 3-6 shows how to connect channel 02.
To route the signal directly, execute:
OPEN (@102)
Connects port 3 to port 2 and
routes the signal directly to the
output.
To route the signal through the external device, execute:
CLOS (@102) Connects port 1 to port 2 and port
3 to port 4 routing the signal
through the external device to the
output.
Comments The one channel 5-port transfer switch example does not terminate the
External Device into 50Ω when not connected to the input.
Figure 3-6. Example: Transfer Switch (one channel)
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Example: 4 x 1 This example shows how to configure the HP E1368A Microwave Switch
to select one of four signals for output. For the example, all three switches
(channels 00 through 02) will be used. Figure 3-6 shows how to connect
channels 00 through 02.
Multiplexer
To route signal "A" to the output, execute:
OPEN (@100,102)
Connects signal "A" (channel 00
port 1) to the output (channel 02
port C).
To route signal "B" to the output, execute:
CLOS (@100);OPEN (@102)
Connects signal "B" (channel 00
port 2) to the output (channel 02
port C). To route signal "C" to the
output, execute:
OPEN (@101);CLOS (@102)
Connects signal "C" (channel 01
port 1) to the output (channel 02
port C).
To route signal "D" to the output, execute:
CLOS (@101,102)
Connects signal "D" (channel 01
port 2) to the output (channel 02
port C).
Comments Unused signals are terminated into 50Ω (internal to the switch).
Figure 3-7. Example: 4-Channel Multiplexer
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Scanning Channels
Scanning the Microwave Switch module channels consists of closing a set
of channels (connecting the 2 port to the C port) one channel at a time.
Single scan, multiple scans (2 to 32767), or continuous scanning modes are
available.
The TRIGger:SOURce command specifies the source to advance the scan.
The OUTPut command can be used to enable the HP E1300/E1301 or HP
E1405/E1406 "Trig Out" port. Figure 3-8 illustrates the scanning sequence.
Sets number of Scanning Cycles
ARM:COUN <number> sets 1 to 32767 scanning cycles per INIT
command.
Selects the Trigger Source
TRIG:SOUR defines the trigger source to advance the scan.
TRIG:SOUR? queries the current trigger source. Sources are:
BUS = Defines trigger source as a *TRG or HP-IB GET command
executed over the HP-IB. With TRIG:SOUR BUS, the scan list is
advanced for each *TRG or GET command received.
EXT = TRIG:SOUR EXT sets external triggering. The trigger source is a
(user supplied) input to the Event In BNC. Use a +5 V Negative-going
pulse to trigger.
HOLD = Prevents execution of triggers until trigger source is changed.
Can use TRIG command to trigger a switchbox set to TRIG:SOUR HOLD.
IMM = Sets immediate (internal) triggering. The scan list is automatically
advanced through the scan list. This is the default trigger mode.
Enables TRIG OUT Port
The Trig Out Port is shared by all instruments in the mainframe. With the
port enabled (OUTP ON), it generates an output trigger each time after a
channel closure for ANY switchbox in the mainframe. The Trig Out port
outputs a +5 V negative-going pulse.
Selects Continuous Scanning Cycles
Use INIT ON or INIT 1 to enable continuous cycles. INIT OFF or INIT 0
is fixed number of scans determined by the ARM:COUN command.
Selects the Channel List for Scanning
SCAN <channel_list> defines channels to be scanned using trigger
source by TRIG:SOUR command.
Enables Scanning
Enables scanning for any trigger source and closes the first channel in
the channel list.
Advances Channel List
This command advances the channel list when the trigger source is
TRIG:SOUR BUS or TRIG:SOUR HOLD. Command not usable with
TRIG:SOUR EXT or TRIG:SOUR IMM.
Figure 3-8. Example: Scanning Commands
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Example: Scanning This example uses the mainframe’s "Trig Out" port to synchronize
Microwave Switch channel 00 to 02 closures to an external measurement
Channels
device (e.g. Frequency Counter, Spectrum Analyzer). For measurement
synchronization, the HP E1300A/E1301A "Trig Out" port is connected to
the external instrument’s "EXT Trig In" port.
Figure 3-9 shows how to connect the Microwave Switch module to the
external instrument. The mainframe and external instrument are connected
to the computer’s HP-IB port, and the measurement results are transferred
directly to the computer. For the example, use:
• an HP-IB select code of 7, primary address of 09, and secondary
address of 15 for the Microwave Switch
• an HP-IB select code of 7, primary address of 22 for the External
Instrument
• an HP Series 200/300 Computer with HP BASIC
Execute:
10 OUTPUT 722;"TRIG EXT;… "
!Configures the external
instrument. Appropriate instrument
commands must be added to make
the measurement.
20 OUTPUT 70915;"*RST"
!Opens all channels, resets
Microwave Switch module to
known state.
30 OUTPUT 70915;"OUTP ON"
!Enable "Trig Out" port.
40 OUTPUT 70915;"TRIG:SOUR BUS" !Sets trigger source to bus
triggering.
50 OUTPUT 70915;"SCAN (@100:102)"!Defines channel list to scan
channels 00, 01, and 02.
60 OUTPUT 70915;"INIT"
!Closes channel 00 and enables the
scan. Causes a trigger output from
mainframe’s "Trig Out" port which
initiates the external instrument to
make a measurement.
70 FOR I=1 to 3
80 WAIT 1
!Start counting loop (3 channels).
!Allows external instrument time to
settle and make measurement.
90 ENTER 722;A
100 PRINT A
!Enters measurement result.
!Displays measurement result.
110 TRIGGER 70915
!Advance scan to channel 01 (then
02).
120 NEXT I
130 END
!Increment the count and repeats
measurement process for a total of
three measurements (channels 00,
01, and 02).
!Terminate program.
40 Using the HP E1368A/69A/70A Modules
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Figure 3-9. Example: Multiple Channel Scanning
Example: Using the You can use the Scan Complete Bit (bit 8) in the Operation Status Register
of a switchbox to determine when a scanning cycle completes (no other bits
Scan Complete Bit
in the register apply to the switchbox). Bit 8 has a decimal value of 256 and
you can read it directly with the STAT:OPER? command (refer to the
STATus:OPERation[:EVENt]? command in Chapter 4 for an example).
When enabled by the STAT:OPER:ENAB 256 command, the Scan Complete
Bit will be reported as bit 7 of the Status Register. Use the HP-IB Serial
Poll or the IEEE 488.2 Common Command *STB? to read the Status
Register.
When bit 7 of the Status Register is enabled by the *SRE 128 Common
Command to assert an HP-IB Service Request (SRQ), you can interrupt the
computer when the Scan Complete Bit is set, after scanning cycle
completes. This allows the controller to do other operations while the
scanning cycle is in progress.
The following example monitors bit 7 in the Status Register to determine
when the scanning cycle completes. For the example, use:
• an HP-IB select code of 7, primary address of 09, and secondary
address of 15 for the Microwave Switch
• an HP Series 200/300 Computer with HP BASIC
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Execute:
10 OUTPUT 70915;"*CLS"
!Clear all switchbox status
structure.
20 OUTPUT 70915;"STAT:OPER:ENAB 256"!Enable Scan Complete Bit to
set bit 7 in Status Register.
30 OUTPUT 70915;"*SRE 128"
!Enable bit 7 of Status Register to
assert SRQ.
40 OUTPUT 70915;"TRIG:SOUR EXT" !Set to external trigger mode.
50 OUTPUT 70915;"SCAN (@100:103)" !Select channels to be scanned.
60 OUTPUT 70915;"INIT"
!Start scanning cycle.
70 WHILE NOT BIT (SPOLL(70915),7) !Waiting for scan complete.
80 PRINT “DO OTHER OPERATION HERE”!Enter program lines for
computer to do other operations.
90 END WHILE
100 PRINT “INTERRUPT GENERATED” !Program goes to this line after
interrupt is generated by a
completed scanning cycle.
110END
!Terminate program.
Comments Channel List Can Be Extended Across Boundaries. For multiple module
switchbox instruments, the channels to be scanned can extend across switch
modules. For example, for a two module switchbox instrument, SCAN
(@100:203) will scan all channels of both Microwave Switch modules.
Setting Multiple Continuous Scans. Use ARM:COUNt number to set from
1 to 32767 scans. Use INITiate:CONTinuous ON to set continuous scanning.
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Recalling and Saving States
This section contains information about saving and recalling switch states.
Storing States The *SAV <numeric_state> command saves the current instrument state.
The state number (0-9) is specified in the <numeric_state> parameter. The
following settings are saved:
• Channel States (open or closed)
• ARM:COUNt
• TRIGger:SOURce
• OUTPut:STATe
• INITiate:CONTinuous
• SCAN:MODE (not used)
• SCAN:PORT (not used)
Recalling States The *RCL <numeric_state> command recalls a previously saved state.
Enter the number (0-9) in the <numeric_state> parameter of the desired
saved state. If *SAV was not previously executed using the selected
number, the Microwave Switch will configure to the reset values.
Detecting Error Conditions
This section discusses using the various Microwave Switch registers to
detect if a switching operation has generated an error. There are two
general approaches to error checking. The simplest, but most time
consuming, is to ask the instrument whether there are errors at every step of
the switching process. This is called "polling" and is illustrated in the
following example .
05 DIM Err_num$ [256]
10 OUTPUT 70915; “CLOS(@100);:SYST:ERR?”
20 ENTER 70915;Err_num$
30 IF VAL (Err_num$) 0 THEN
40 PRINT “Error”;Err_num$
50 STOP
60 END IF
70 … (program continues)
The other approach involves the use of interrupts. The following program is
a method of checking for errors using interrupts as you program the
Microwave Switch. The program monitors the Microwave Switch’s
Standard Event Status Register for an error condition. If no errors occur,
the Microwave Switch functions as programmed. If errors do occur, the
Microwave Switch interrupts the computer, and the error codes and
messages are read from the error queue. This approach requires less
checking, but is more complex.
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For the example, use:
• an HP-IB select code of 7, primary address of 09, and secondary
address of 15 for the Microwave Switch
• an HP Series 200/300 Computer with HP BASIC
Execute:
10 !Call computer subprogram “Errmsg” if a Microwave
20 !Switch programming error occurs. Enable the computer to respond
30 !to an interrupt from the Microwave Switch.
35
!
40 ON INTR 7 CALL Errmsg
50 ENABLE INTR 7:2
60
!
70 !Unmask the Event Status bit in the Microwave Switch’s Status
80 !Register. Unmask the Microwave Switch error conditions in its
90 !Standard Event Status Register.
95
!
100 OUTPUT 70915;"*SRE 32"
110 OUTPUT 70915;"*ESE 60"
120 !
130 !At this point, the Microwave Switch is programmed for the intended
140 !application.
145 !
150 OUTPUT 70915;" . . .
160 OUTPUT 70915;" . . .
170 ENTER 70915; . . .
180 PRINT . . .
190 END
200 !
210 !When an error occurs, clear the Microwave Switch to regain
220 !control. Execute a Serial Poll to clear the service request
230 !bit in the Status Register. Read all error messages in the
240 !Microwave Switch error queue. Clear all bits in the counter
250 !Standard Event Status Register.
255 !
260 SUB Errmsg
270 DIM Message$[256]
280 CLEAR 70915
290 B=SPOLL (70915
300 REPEAT
310 OUTPUT 70915; “SYST:ERR?”
320 ENTER 70915; Code, Message$
330 PRINT Code,Message$
340 UNTIL Code=0
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350 OUTPUT 70915;"*CLS"
360 STOP
370 SUBEND
Comments If you have an HP 75000 Series B mainframe with a front panel keyboard,
errors can be monitored by selecting “Monitor” from the Switch menu. If
errors occur when the program executes, the “err” annunciator will appear.
Entering SYST:ERR? repeatedly from the keyboard reads all of the
messages in the error queue. The HP 75000 Series B Mainframe User’s
Manual contains detailed information on the Status and Standard Event
Status Registers.
Synchronizing the Microwave Switch
This section discusses synchronizing the Microwave Switch module to
other instruments when making measurements.
Synchronizing The following example shows how you synchronize instruments. In this
example, the Microwave Switch switches a signal to be measured by a
counter. This program verifies that the switching is complete before the
counter begins a measurement. For the example, use:
Instruments
• an HP-IB select code of 7, primary address of 09, and secondary
address of 06 for the Counter
• an HP-IB select code of 7, primary address of 09, and secondary
address of 15 for the Microwave Switch
• an HP Series 200/300 Computer with HP BASIC
Execute:
10 !Close channel 101 and request confirmation that the channel is
15 !closed.
20 OUTPUT 70915;"CLOSE (@101);*OPC?"
30 !Read confirmation.
35 OUTPUT 70915;"CLOSE? (@101)"
40 ENTER 70915;A
50 !At this point (channel is closed) the measurement can be made.
60 OUTPUT 70906: “MEAS1:FREQ?”
70 ENTER 70906:Meas_value
80 END
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Querying the Microwave Switch
This section summarizes the query commands you can use to determine the
configuration or state of the Microwave Switch. All commands end with
the question mark (?) which puts the data into the output buffer where you
can retrieve it to your computer. See Chapter 4 for more information.
Channel Closed:
CLOS?
Channel Opened:
OPEN?
Mainframe TRIG OUT State:
Module Description:
Module Type:
OUTP:STAT?
SYST:CDES?
SYST:CTYP?
ARM:COUN?
SCAN:MODE?
INIT:CONT?
Number of Scanning Cycles:
Scanning Mode:
Scanning State
Status Operation Enable:
Status Operation Event:
System Error:
STAT:OPER:ENAB?
STAT:OPER:EVEN?
SYST:ERR?
Trigger Source:
TRIG:SOUR?
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Chapter 4
HP E1368A/69A/70A Command Reference
Using This Chapter
This chapter describes Standard Commands for Programmable Instruments
(SCPI) commands and summarizes IEEE 488.2 Common (*) Commands
applicable to the Microwave Switch. See the HP 75000 Series B
Mainframe HP E1300A/E1301A User’s Manual or the HP 75000 Series C
HP E1406 User’s Manual for additional information on SCPI and common
commands. This chapter contains the following sections:
• Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 47
• SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . Page 50
• IEEE 488.2 Common Commands . . . . . . . . . . . . . . . . . . . . . Page 70
• Command Quick Reference. . . . . . . . . . . . . . . . . . . . . . . . . . Page 71
Command Types
Commands are separated into two types: IEEE 488.2 Common Commands
and SCPI Commands.
Common The IEEE 488.2 standard defines the Common Commands that perform
functions like reset, self-test, status byte query, etc. Common Commands
Command Format
are four or five characters in length, always begin with the asterisk character
(*), and may include one or more parameters. The command keyword is
separated from the first parameter by a space character. Some examples of
Common Commands are sh`own below:
*RST
*ESR 32
*STB?
SCPI Command SCPI commands perform functions like closing switches, making
measurements, querying instrument states, or retrieving data. A subsystem
Format
command structure is a hierarchical structure that usually consists of a top
level (or root) command, one or more lower level commands, and their
parameters. The following example shows part of a typical subsystem:
[ROUTe:]
CLOSe <channel_list>
SCAN <channel_list>
:MODE?
[ROUTe:] is the root command, CLOSe and SCAN are second level
commands with parameters, and :MODE? is a third level command.
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Command Separator A colon (:) always separates one command from the next lower level
command as shown below:
ROUTe:SCAN:MODE?
Colons separate the root command from the second level command
(ROUTe:SCAN) and the second level from the third level (SCAN:MODE?).
Abbreviated The command syntax shows most commands as a mixture of upper and
lower case letters. The upper case letters indicate the abbreviated spelling
for the command. For shorter program lines, send the abbreviated form.
For better program readability, you may send the entire command. The
instrument will accept either the abbreviated form or the entire command.
Commands
For example, if the command syntax shows MEASure, then MEAS and
MEASURE are both acceptable forms. Other forms of MEASure, such as
MEASU or MEASUR will generate an error. You may use upper or lower
case letters. Therefore, MEASURE, measure, and MeAsUrE are all
acceptable.
Implied Commands Implied commands are those which appear in square brackets ([ ]) in the
command syntax. (Note that the brackets are not part of the command and
are not sent to the instrument.) Suppose you send a second level command
but do not send the preceding implied command. In this case, the
instrument assumes you intend to use the implied command and it responds
as if you had sent it. Examine the SOURce subsystem shown below:
[SOURce:]
PULSe
:COUNt <count>
:COUNt? [<MIN | MAX>]
:PERiod <period>
:PERiod? [<MIN | MAX>]
The root command [SOURce:] is an implied command. To set the
instrument’s pulse count to 25, you can send either of the following
command statements:
SOUR:PULS:COUN 25
or
PULS:COUN 25
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Parameters Parameter Types. The following table contains explanations and examples
of parameter types you might see later in this chapter.
Parameter Type
Explanations and Examples
Numeric
Accepts all commonly used decimal representations of
numbers including optional signs, decimal points, and
scientific notation.
123, 123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E-01.
Special cases include MIN, MAX, and DEF. MIN selects
minimum value available, MAX selects maximum value
available, and DEF selects default or reset value.
Boolean
Discrete
Represents a single binary condition that is either true or
false.
1 or ON; 0 or OFF.
Selects from a finite number of values. These parameters
use mnemonics to represent each valid setting.
An example is the TRIGger:SOURce <source> command
where source can be BUS, EXT, HOLD, or IMM.
Optional Parameters. Parameters shown within square brackets ([ ]) are
optional parameters. (Note that the brackets are not part of the command
and are not sent to the instrument.) If you do not specify a value for an
optional parameter, the instrument chooses a default value. For example,
consider the ARM:COUNt? [<MIN | MAX>] command. If you send the
command without specifying a parameter, the present ARM:COUNt value is
returned. If you send the MIN parameter, the command returns the
minimum count available (1). If you send the MAX parameter, the
command returns the maximum count available (32,767). Be sure to place a
space between the command and the parameter.
Linking Commands Linking IEEE 488.2 Common Commands with SCPI Commands. Use
a semicolon between the commands. For example:
*RST;OUTP ON
or
TRIG:SOUR HOLD;*TRG
Linking Multiple SCPI Commands. Use both a semicolon and a colon
between the commands. For example:
ARM COUN 1;:TRIG:SOUR EXT
SCPI allows several commands within the same subsystem to be linked
with a semicolon. For example:
ROUT:CLOS (@100);:ROUT:OPEN (A101)
or
ROUT:CLOS (@100);OPEN (@101)
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SCPI Command Reference
This section describes the Standard Commands for Programmable
Instruments (SCPI) commands for the Microwave Switch modules.
Commands are listed alphabetically by subsystem and also within each
subsystem.
ABORt
The ABORt subsystem stops a scan in progress when the scan is enabled via
the interface, and the trigger modes are TRIGger:SOURce BUS or
TRIGger:SOURce HOLD.
Subsystem Syntax
Comments
ABORt
• ABORt Operation invalidates the current channel list and sets
ARM:COUNt 1 (one scanning cycle per INITiate command), sets
INITiate CONTinuous OFF (no continuous scanning cycles), and sets
TRIGger:SOURce IMMediate (continuous internal triggering).
• Stopping Scans Enabled from Interface: When a scan is enabled
from the interface, use an interface CLEAR command or the HP
E1301 front panel "Reset Instr" or "Clear Instr" key to stop the scan.
When the scan is enabled from the interface and the trigger source is
TRIGger:SOURce BUS or TRIGger:SOURce HOLD, use ABORt or
the HP E1301 front panel "Reset Instr" or "Clear Instr" keys to stop
the scan.
• Stopping Scans Enabled from Front Panel: When a scan is
enabled from the HP E1301 front panel, execute *RST over the
interface or the front panel "Reset Instr" or "Clear Instr" keys to stop
the scan.
• Related Commands: ARM, INITiate:CONTinuous, [ROUTe:]SCAN,
TRIGger
Example Stopping a Scan with ABORt
This example stops a (continuous) scan in progress.
TRIG:SOUR BUS
INIT:CONT ON
SCAN (@100:102)
INIT
BUS is trigger source.
Set continuous scanning.
Scan channels 00-02.
Starts scanning cycle, close
channel 00.
ABOR
Aborts scan in progress.
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ARM
The ARM subsystem selects the number of scanning cycles (1 through
32767) for each INITiate command.
ARM
:COUNt <number> MIN | MAX
:COUNt? [MIN | MAX]
:COUNt ARM:COUNt <number> MIN | MAX allows scanning cycles to occur a
multiple of times (1 to 32767) with one INITiate command when
INITiate:CONTinuous OFF | 0 is set. MIN sets 1 cycle and MAX sets 32,767
cycles.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
1 - 32767 | MIN | MAX
1
number
Comments
• Number of Scans: Use only numeric values between 1 and 32767
for the number of scanning cycles (default is 1).
• Related Commands: ABORt, INITiate:IMMediate
• *RST Condition: ARM:COUNt 1
Example Setting Ten Scanning Cycles
This example sets a Microwave Switch for 10 scans of channels 00 through
02. When the scan sequence completes, channels 00 through 02 (switches
00 through 02) are closed.
ARM:COUN 10
SCAN (@100:102)
INIT
Set 10 scans per INIT command.
Scan channels 00-02.
Start scan, close channel 00.
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:COUNt? ARM:COUNt? [MIN | MAX] returns the current number of scanning cycles
set by ARM:COUNt. The current number of scans cycles is returned when
no MIN or MAX parameter is sent. With MIN or MAX passed as parameters,
MIN returns 1 and MAX returns 32767.
Parameters
Parameter Name
Parameter Type
Range of Values
Value
MIN | MAX
numeric
MIN = 1, MAX = 32767
cycles
Comments
• Related Commands: INITiate:IMMediate
Example Query Number of Scanning Cycles
This example sets a Microwave Switch for 10 scanning cycles of channels
00 through 02, and queries the number of scan cycles set. The
ARM:COUN? command returns 10.
ARM:COUN 10
ARM COUN?
Set 10 scans per INIT command.
Query number of scanning cycles.
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DISPlay
The DISPlay subsystem monitors the channel state of a selected module (or
card) in a switchbox. This subsystem only operates with mainframes that
have a display, such as the HP 75000 Series B Mainframe (HP Model
Number E1301A).
Subsystem Syntax
DISPlay
:MONitor
:CARD <number | AUTO>
[:STATe] <mode>
[:STATe]?
:MONitor:CARD DISPlay:MONitor:CARD <number | AUTO> selects the module in a
switchbox to be monitored when the monitor mode is enabled. Use the
DISPlay:MONitor:STATe command to enable and disable the monitor mode.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
1 - 99 or AUTO
AUTO
number | AUTO
Comments
• Selecting a Specific Module to be Monitored: Use the
DISPlay:MONitor:CARD command to send the card number in a
switchbox to be monitored.
• Selecting the Present Module to be Monitored: Use the
DISPlay:MONitor AUTO command to select the last module
addressed by a switching command (e.g.,[ROUTe:]CLOSe).
• *RST Condition: DISPlay:MONitor:CARD AUTO
Example Select Module #2 in a Switchbox for Monitoring
DISP:MON:CARD 2
Selects module #2 in a switchbox
to be monitored when the mode is
enabled.
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:MONitor[:STATe] DISPlay:MONitor[:STATe] <mode> turns the monitor mode ON or OFF.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
boolean
0 | 1 | ON | OFF
0 | OFF
mode
Comments
• Monitoring Switchbox Channels: DISPlay:MONitor[:STATe] ON or
DISPlay:MONitor[:STATe] 1 turns the monitor mode ON to show the
channel state of the selected module. DISPlay:MONitor[:STATe]
OFF or DISPlay:MONitor[:STATe] 0 turns the monitor mode OFF.
• Selecting the Module to be Monitored: Use the
DISPlay:MONitor:CARD <number> | AUTO command to select the
module.
• Monitor Mode on an HP E1301A Mainframe Display: A typical
display for the HP E1368A/E1369A Microwave Switch module
follows, where all channels (all relays) are closed.
SWITCH_120: Chan: 0,1,2,3,4, , , , , ,
The example shows that channels 00, 01, 02, 03, and 04 are closed.
• Disabling Monitor Mode: Pressing any HP E1301A front panel key
while in monitor mode will automatically disable the function.
• *RST Condition: DISPlay:MONitor[:STATe] OFF | 0
Example Enabling the Monitor Mode
DISP:MON:CARD 2
DISP:MON 1
Selects module #2 in a switchbox.
Turns the monitor mode ON.
:MONitor[:STATe]? DISPlay:MONitor[:STATe]? returns a number indicating whether the
monitor mode is enabled or disabled: "1" = ON, "0" = OFF. The value is
sent to the output buffer.
Comments
• This command is valid only when executed from your computer via
the interface. The monitor mode is automatically disabled if you
attempt to execute the command from the mainframe’s front panel.
Example
Querying the Monitor Mode
DISP:MON?
Query the present state of the
monitor mode.
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INITiate
The INITiate subsystem selects continuous scanning cycles and starts the
scanning cycle.
Subsystem Syntax
INITiate
:CONTinuous <mode>
:CONTinuous?
[:IMMediate]
:CONTinuous INITiate:CONTinuous <mode> enables or disables continuous scanning
cycles for the switchbox.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
boolean
0 | 1 | ON | OFF
OFF | 0
mode
Comments
• Continuous Scanning Operation: Continuous scanning is enabled
with the INITiate:CONTinuous ON or INITiate:CONTinuous 1
command. Sending the INITiate[:IMMediate] command closes the
first channel in the channel list. Each trigger from a trigger source
selected by the TRIGger:SOURce command advances the scan
through the channel list. A trigger at the end of the channel list
closes the first channel in the list and the scan cycle repeats.
• Non-Continuous Scanning Operation: Non-continuous scanning is
enabled with the INITiate:CONTinuous OFF or INITiate:CONTinuous
0 command. Sending the INITiate[:IMMediate] command closes the
first channel in the channel list. Each trigger from a trigger source
selected by the TRIGger:SOURce command advances the scan
through the channel list. At the end of the scanning cycle, the last
channel in the channel list is closed.
• Stopping Continuous Scans: See the ABORt command.
• Related Commands: ABORt, ARM:COUNt, TRIGger,
TRIGger:SOURce
Example Enabling Continuous Scans
This example enables continuous scanning of channels 00 through 02 of a
single-module switchbox. Since TRIGger:SOURce IMMediate (default) is
set, use an interface clear command (such as CLEAR) to stop the scan.
INIT:CONT ON
SCAN (@100:102)
INIT
Enables continuous scanning.
Defines channel list.
Start scan cycle, close channel 00.
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:CONTinuous? INITiate:CONTinuous? queries the scanning state. With continuous
scanning enabled, the command returns 1. With continuous scanning
disabled, the command returns 0.
Example Query Continuous Scanning State
This example enables continuous scanning of a switchbox and queries the
state. Since continuous scanning is enabled, query should return 1.
INIT:CONT ON
INIT:CONT?
Enables continuous scanning.
Query continuous scanning state.
[:IMMediate]
INITiate[:IMMediate] starts the scanning process and closes the first
channel in the channel list. Successive triggers from the source specified by
the TRIGger:SOURce command advances the scan through the channel list.
Comments
• Starting the Scanning Cycle: The INITiate[:IMMediate] command
starts scanning by closing the first channel in the channel list. Each
trigger received advances the scan to the next channel in the channel
list. An invalid channel list definition generates an error (see the
[ROUTe:]SCAN command).
• Stopping Scanning Cycles: See the ABORt command.
Example Enabling a Single Scan
This example enables a single scan of channels 00 through 02 of a
single-module switchbox. The trigger source to advance the scan is
immediate (internal) triggering, set with (default) TRIGger:SOURce
IMMediate.
SCAN (@100:102)
INIT
Scan channels 00-02.
Begin scan, close channel 00 (use
immediate triggering).
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OUTPut
The OUTPut subsystem enables or disables the "Trig Out" port of the HP
E1300/E1301 Mainframe or on the HP Command Module.
Subsystem Syntax
OUTPut
[:STATe] <state>
[:STATe]?
[:STATe] OUTPut[:STATe] <state> enables/disables the "Trig Out" port on the rear
panel of the HP E1300A/E1301A Mainframe or on the HP Command
Module. OUTPut[:STATe] ON | 1 enables the port and OUTPut[:STATe]
OFF | 0 disables the port.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
boolean
0 | 1 | ON | OFF
OFF | 0
state
Comments
• Enabling "Trig Out" Port: When enabled, a pulse is output from
the "Trig Out" port after each switchbox channel is closed. If
disabled, a pulse is not output from the "Trig Out" port after channel
closures. The output pulse is a +5V negative-going pulse.
• "Trig Out" Port Shared by Switchboxes: When enabled, the "Trig
Out" port may be pulsed by any switchbox each time a scanned
channel is closed. To disable the output for a specific switchbox,
send the OUTPut[:STATe] OFF or OUTPut[:STATe] 0 command for
that switchbox.
• Related Commands: [ROUTE:]SCAN, TRIGger:SOURce
• *RST Condition: OUTPut[:STATe] OFF (port disabled)
Example Enabling "Trig Out" Port
OUTP:STAT ON
Enables "Trig Out" port to output
pulse after each scanned channel is
closed.
[:STATe]? OUTPut[:STATe]? queries the present state of the "Trig Out" port. The
command returns 1 if the port is enabled, or 0 if disabled.
Example Query "Trig Out" Port Enable State
This example enables the "Trig Out" port and queries the enable state. The
OUTPut[:STATe]? command returns 1 since the port is enabled.
OUTP:STAT ON
OUTP:STAT?
Enables "Trig Out" port for pulse
output.
Query port enable state.
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[ROUTe:]
The ROUTe subsystem controls switching and scanning operations for the
Microwave Switch modules in a switchbox.
Subsystem Syntax
[ROUTe:]
CLOSe <channel_list>
CLOSe? <channel_list>
OPEN <channel_list>
OPEN? <channel_list>
SCAN <channel_list>
:MODE NONE | VOLT
:MODE?
CLOSe [ROUTe:]CLOSe <channel_list> closes the Microwave Switch channels
specified in the channel_list. The channel_list is in the form (@ccnn)
where cc = card number (00-99) and nn = channel number (00-04).
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
cc00 - cc04
N/A
channel_list
Comments
• Closing Channels: To close:
– a single channel, use [ROUTe:]CLOSe (@ccnn);
– multiple channels, use [ROUTe:]CLOSe (@ccnn,ccnn);
– sequential channels, use [ROUTe:]CLOSe (@ccnn:ccnn);
– a group of sequential channels, use
[ROUTe:]CLOSe (@ccnn:ccnn,ccnn:ccnn);
– or any combination.
Closure order for multiple channels with a single command is not
guaranteed.
• Related Commands: [ROUTe:]OPEN, [ROUTe:]CLOSe?
• *RST Condition: All channels are open.
Example Closing Microwave Switch Channels
This example closes channels 100 and 202 of a two-module switchbox (card
numbers 01-02).
CLOS (@100,202)
100 closes channel 00 of card #1;
202 closes channel 02 of card #2.
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CLOSe? [ROUTe:]CLOSe? <channel_list> returns the current state of the
channel(s) queried. The channel_list is in the form (@ccnn). The
command returns 1 if the channel is closed or returns 0 if the channel is
open.
Comments
• Query is Software Readback: The [ROUTe:]CLOSe? command
returns the current software state of the channel specified. It does
not account for relay hardware failures. A maximum of 127
channels at a time can be queried for a multi-module switchbox.
Example Query Channel Closure
This example closes channels 100 and 202 of a two-module switchbox (card
numbers 01 and 02) and queries channel closure. Since the channels are
programmed to be closed 1,1 is returned.
CLOS (@100,202)
CLOS? (@202)
100 closes channel 00 of card #1;
202 closes channel 02 of card #2.
Query channel 02 of card #2.
OPEN [ROUTe:]OPEN <channel_list> opens the Microwave Switch channels
specified in the channel_list. The channel_list is in the form (@ccnn)
where cc = card number (00-99) and nn = channel number (00-04).
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
cc00 - cc04
N/A
channel_list
Comments
• Opening Channels: To open:
– a single channel, use [ROUTe:]OPEN (@ccnn);
– for multiple channels, use [ROUTe:]OPEN (@ccnn,ccnn);
– sequential channels, use [ROUTe:]OPEN (@ccnn:ccnn);
– a group of sequential channels, use
[ROUTe:]OPEN (@ccnn:ccnn,ccnn:ccnn);
– or any combination.
Opening order for multiple channels with a single command is not
guaranteed.
• Related Commands: [ROUTe:]CLOSe, [ROUTe:]OPEN?
• *RST Condition: All channels are open.
Example Opening Microwave Switch Channels
This example opens channel 00 of a card number #1 and channel 02 of a
card number #2 in a two-module switchbox.
OPEN (@100,202)
100 opens channel 00 of card #1;
202 opens channel 02 of card #2
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OPEN? [ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)
queried. The channel_list is in the form (@ccnn). The command returns 1
if the channel is open or returns 0 if the channel is closed.
Comments
• Query is Software Readback: The [ROUTe:]OPEN? command
returns the current software state of the channels specified. It does
not account for relay hardware failures. A maximum of 127
channels at a time can be queried for a multi-module switchbox.
Example Query Channel Open State
This example opens channels 100 and 202 of a two-module switchbox (card
numbers 01 and 02) and queries channel state. Since the channels are
programmed to be open 1,1 is returned.
OPEN (@100,202)
OPEN? (@202)
100 opens channel 00 of card #1;
202 opens channel 02 of card #2.
Query channel 02 of card #2.
SCAN [ROUTe:]SCAN <channel_list> defines the channels to be scanned. The
channel_list is in the form (@ccnn) where cc = card number (00-99) and nn
= channel number (00-04).
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
cc00 - cc04
N/A
channel_list
Comments
• Defining the Scan List: When executing [ROUTe:]SCAN, the
channel list is checked for valid card and channel numbers. An error
is generated for an invalid channel list.
• Scanning Channels: To scan:
– a single channel, use [ROUTe:]SCAN (@ccnn);
– for multiple channels, use [ROUTe:]SCAN (@ccnn,ccnn,… );
– sequential channels, use [ROUTe:]SCAN (@ccnn:ccnn);
– a group of sequential channels, use
[ROUTe:]SCAN (@ccnn:ccnn,ccnn:ccnn);
– or any combination.
• Scanning Operation: With a valid channel list, INITiate[:IMMediate]
starts the scanning cycle and closes the first channel in the channel
list. Successive triggers from the source specified by
TRIGger:SOURce advances the scan through the channel list.
• Stopping Scan: See the ABORt command.
• Related Commands: TRIGger, TRIGger:SOURce
• *RST Condition: All channels open.
Example Scanning Using External Device
See the section in Chapter 3 titled “Scanning Channels” for examples of
scanning programs using external instruments.
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SCAN:MODE [ROUTe:]SCAN:MODE <mode> is accepted by the Microwave Switch.
NONE, VOLT, and RES set the mode for "no measurements" while FRES is
not supported and will generate an error. This command has no effect on
Microwave Switch operation.
SCAN:MODE? [ROUTe:]SCAN:MODE? returns the current scanning mode of the
Microwave Switch. NONE, VOLT, or RES are placed in the output buffer as
a result.
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STATus
The STATus subsystem reports the bit values of the Operation Status
Register. Only bit 8 in the Standard Operation Status Register is used to
notify that a scan is complete.
Subsystem Syntax
STATus
:OPERation
:ENABle <number>
:ENABle?
[:EVENt]?
The STATus system contains four registers, two of which are under IEEE
488.2 control. These are the Standard Event Status Register (*ESE) and the
Status Byte Register (*STB?). Refer to the appropriate mainframe or
command module operating manual for more information on these registers.
The two registers under Microwave Switch control are the Standard
Operation Status Register, and the Questionable Data/Signal Register. The
Questionable Data/Signal Register is not used in the Microwave Switch and
will not be discussed. The Standard Operation Status Register is discussed
below. The figure shown below illustrates the Status System Registers.
The various registers are set and queried using decimal weighted bit values.
The decimal equivalent for bits 0 to 15 is shown below.
Bit Number to Decimal Value
Bit Number
0
1
1
2
2
4
3
8
4
5
6
7
8
9
10
11
12
13
14
15
Decimal Value
16
32
64 128 256 512 1024 2048 4096 8192 16384 32768
For example, sending a decimal value of 4608 will set bits 9 and 12 true (1).
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:OPERation:ENABle STATus:OPERation:ENABle <number> enables the Standard Operation
Status Register to set a bit in the Status Byte Register. For the Microwave
Switch, when bit 8 in the Standard Operation Status Register is set to 1, bit
7 in the Status Byte Register is set to 1.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
0 - 32767
0
number
Comments
• Summary Bit: If bit 8 is 1 in the Standard Operation Status Enable
Register, a transition of Event Register bit 8 to 1 will cause the
associated summary bit to be true.
• Maximum Value Entered: The maximum decimal weighted value
used in the Microwave Switch module is 256 (bit 8 set true).
• Setting Bit 7 of the Status Byte Register:
STATus:OPERation:ENABle 256 sets bit 7 of the Status Byte
Register to 1 after bit 8 of the Standard Operation Status Enable
Register is set to 1.
• Related Commands: [ROUTe:]SCAN
Example Enable the Status Byte Register Bit 7
STAT:OPER:ENAB 256
Enables bit 7 of the Standard
Operation Status Enable Register,
which enables bit 7 of Status Byte
Register.
:OPERation:ENABle? STATus:OPERation:ENABle? returns the bit value of the Standard
Operation Status Enable Register.
Comments
• Output Format: Returns a decimal weighted value from 0 to 65535
indicating which bits are set true.
• Maximum Value Returned: The maximum decimal weighted value
used in the Microwave Switch module is 256 (bit 8 set true).
Example Query the Standard Operation Status Enable Register
STAT:OPER:ENAB?
Queries the Standard Operation
Status Enable Register.
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:OPERation[:EVENt]? STATus:OPERation[:EVENt]? queries the status of the Standard
Operation Status Event Register.
Comments
• Output Format: Returns a decimal weighted value from 0 to 256
indicating which bits are set true.
• Related Commands: [ROUTe:]SCAN
Example Reading the Operation Status Event Register after a Scanning Cycle
STAT:OPER?
Returns the bit values of the
Standard Operation Status Event
Register. Returns +256 if bit 8 is
set to 1; +0 if bit 8 is set to 0.
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SYSTem
The SYSTem subsystem returns error numbers/messages in the error queue
of a switchbox, and returns the types and descriptions of modules (cards) in
a switchbox.
Subsystem Syntax
SYSTem
:CDEScription? <number>
:CPON <number | ALL>
:CTYPe? <number>
:ERRor?
:CDEScription? SYSTem:CDEScription? <number> returns the description of a selected
module (card) in a switchbox.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
01 - 99
N/A
number
Comments
• Microwave Switch Switch Module Description: The
SYSTem:CDEScription? <number> command returns:
18 GHz Microwave Switch/Switch Driver
for both the HP E1368A Microwave Switch and the HP E1369A
Microwave Switch Driver.
Example Reading the Description of a Card #1 Module
SYST:CDES? 1
Returns the description.
:CPON SYSTem:CPON <number | ALL> sets the selected module (card) in a
switchbox to its power-on state.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
01 - 99 | ALL
ALL
number
Comments
• Microwave Switch Switch Module Power-On State: The
power-on state is all channels (relays) open. Note that
SYSTem:CPON ALL and *RST opens all channels of all modules in a
switchbox, while SYSTem:CPON <number> opens the channels in
only the module (card) specified in the command.
Example
Setting Card #1 Module to its Power-On State
SYST:CPON 1
Sets card #1 to power-on state.
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:CTYPe? SYSTem:CTYPe? <number> returns the module (card) type of a selected
module in a switchbox.
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
numeric
01 - 99
N/A
number
Comments Microwave Switch Module Model Number:
The SYSTem:CTYPe? <number> command returns (for both modules):
HEWLETT-PACKARD,E1368A,0,A.01.00
Note: The 0 after the module number is the serial number of the module
(always 0). A.01.00 is an example of the module revision code number.
Example Reading the Model Number of a Card #1 Module
SYST:CTYP? 1
Returns the model number.
:ERRor? SYSTem:ERRor? returns the error numbers and corresponding error
messages in the error queue of a switchbox. See Appendix C for a listing of
the switchbox error numbers and messages.
Comments
• Error Numbers/Messages in the Error Queue: Errors generated
by a switchbox store an error number and corresponding error
message in the error queue. Each error message can be up to 255
characters long.
• Clearing the Error Queue: An error number/message is removed
from the queue each time the SYSTem:ERRor? command is sent.
The errors are cleared first-in, first-out. When the queue is empty,
each following SYSTem:ERRor? command returns 0, "No error".
To clear all error numbers/messages in the queue, execute the *CLS
command.
• Maximum Error Numbers/Messages in the Error Queue: The
queue holds a maximum of 30 error numbers/messages for each
switchbox. If the queue overflows, the last error number/message in
the queue is replaced by -350, "Too many errors". The oldest error
numbers/messages remain in the queue and the most recent are lost.
• *RST Condition: *RST does not clear the error queue.
Example Reading the Error Queue
SYST:ERR?
Query the error queue, read and
print the numbers/message.
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TRIGger
The TRIGger subsystem controls the triggering operation of the Microwave
Switch modules in a switchbox.
Subsystem Syntax
TRIGger
[:IMMediate]
:SOURce BUS | EXTernal | HOLD | IMMediate
:SOURce?
[:IMMediate] TRIGger[:IMMediate] causes a trigger to occur when the defined trigger
source is TRIGger:SOURce HOLD or TRIGger:SOURce BUS.
Comments
• Executing the TRIGger[:IMMediate] Command: A channel list
must be defined with [ROUTe:]SCAN <channel_list> and an
INITiate[:IMMediate] command must be executed before
TRIGger[:IMMediate] can trigger the switchbox.
• HOLD or BUS Source Remains: If selected, the TRIGger:SOURce
HOLD or TRIGger:SOURce BUS commands remain in effect after
triggering the switchbox with the TRIGger[:IMMediate] command.
• Related Commands: INITiate, [ROUTe:]SCAN
Example Advancing Scan Using the TRIGger Command
This example uses the TRIGger command to advance the scan of a
single-module switchbox from channel 00 through 02. Since
TRIGger:SOURce HOLD is set, the scan is advanced one channel each time
TRIGger is executed.
TRIG:SOUR HOLD
SCAN (@100:202)
INIT
Sets trigger source to HOLD.
Defines channel list.
Begin scan, close channel 00.
Start count loop.
loop statement
TRIG
Advance scan to next channel.
Increment loop count.
increment loop
:SOURce TRIGger:SOURce BUS | EXTernal | HOLD | IMMediate specifies the
trigger source to advance the channel list during scanning.
Parameters
Parameter Name
BUS
Parameter Type
discrete
Range of Values
*TRG command
EXTernal
HOLD
discrete
Event In BNC port
Hold triggering
discrete
IMMediate
discrete
Continuous triggering
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Comments
• Enabling the Trigger Source: The TRIGger:SOURce command
only selects the trigger source. The INITiate[:IMMediate] command
enables the trigger source.
• Using the TRIG Command: You can use TRIGger[:IMMediate] to
advance the scan when TRIGger:SOURce BUS or TRIGger:SOURce
HOLD is selected.
• Using External Trigger Inputs: With TRIGger:SOURce EXTernal
selected, only one switchbox at a time can use the external trigger
input at the HP E1300/E1301 Mainframe’s "Event In" port. The
trigger input is assigned to the first switchbox requesting the external
trigger source (with a TRIGger:SOURce EXTernal command).
• Assigning External Trigger: A switchbox assigned with
TRIG:SOUR EXT remains assigned to that source until it receives a
command to change the source to BUS, HOLD, or IMMediate. When
the source is changed, the external trigger source is available to the
next switchbox which requests it (with a TRIGger:SOURce
EXTernal command). If a switchbox requests an external trigger
input already assigned to another switchbox, an error is generated.
• Using Bus Triggers: To trigger the switchbox with
TRIGger:SOURce BUS selected, use the IEEE 488.2 common
command *TRG or the HP-IB Group Execute Trigger (GET).
• "Trig Out" Port Shared by Switchboxes: See the OUTPut
command.
• Related Commands: [ROUTe:]SCAN, TRIGger, ABORt
• *RST Condition: TRIGger:SOURce IMMediate
Example Scanning Using External Triggers
This example uses external triggering (TRIG:SOUR EXT) to scan channels
00 through 02 of a single-module switchbox. The trigger source to advance
the scan is the input to the "Event In" port on an HP E1300A/E1301A
mainframe. When INIT is executed, the scan is started and channel 00 is
closed. Then each trigger received at the "Event In" port advances the scan
to the next channel.
TRIG:SOUR EXT
SCAN (@100:102)
INIT
Sets trigger source to external.
Scan channels 00 through 02.
Begin scan, close channel 00.
Advance scan to next channel.
trigger externally
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Scanning Using Bus Triggers
This example uses bus triggering (TRIG:SOUR BUS) to scan channels 00
through 02 of a single-module switchbox. The trigger source to advance the
scan is the *TRG command (as set with TRIGger:SOURce BUS). When
INIT is executed, the scan is started and channel 00 is closed. Then, each
*TRG command advances the scan to the next channel.
TRIG:SOUR BUS
SCAN (@100:102)
INIT
Select interface (BUS) triggering.
Scan channels 00 through 02.
Start scan, close channel 00.
*TRG
Advances scan using BUS
triggering.
increment loop
Increment loop count.
:SOURce? TRIGger:SOURce? returns the current trigger source for the switchbox.
Command returns either BUS, EXT, HOLD, or IMM for trigger sources BUS,
EXTernal, HOLD, or IMMediate, respectively.
Example Query the Trigger Source
TRIG:SOUR EXT
TRIG:SOUR?
Sets trigger source to external.
Query trigger source.
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IEEE 488.2 Common Commands
The following table lists the IEEE 488.2 Common (*) Commands that can
be executed by the Microwave Switch modules. The operation of some of
these commands is described in Chapter 3 of this manual. For more
information on Common Commands, refer to the HP 75000 Series B
Mainframe User’s Manual (HP Model Number E1300/E1301), appropriate
HP Command Module User’s Manual, or the ANSI/IEEE Standard
488.2-1987.
Command
*IDN?
Title
Identification query
Reset
Description
Returns identification string of the switchbox.
*RST
Opens all channels, and invalidates current channel list for scanning.
Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.
*TST?
*OPC
Self-Test
Always returns 0.
Operation Complete
Sets the request for OPC flag when all pending operations have
completed. Also sets OPC bit in the Standard Event Register.
*OPC?
*WAI
Operation Complete Query
Wait to Complete
Clear status
Returns a 1 to the output queue when all pending operations have
completed. Used to synchronize between multiple instruments.
Halts execution of commands and queries until the "No Operation
Pending" message is true.
*CLS
Clears all Event Registers, the Request for OPC flag, and all queues
(except output queue).
Event status enable
Used to set the bits in the Event Status Enable Register.
*ESE<mask>
*ESE?
Event status enable query
Event status register query
Service request enable
Queries the current contents in the Event Status Enable Register.
Queries and clears the contents in the Standard Event Status Register.
*ESR?
Used to set the Service Request Enable Register bits, and corresponding
Serial Poll Status Byte Register bits, to generate a service request.
*SRE<mask>
*SRE?
*STB?
*TRG
Service request enable query Queries the current contents in the Service Request Enable Register.
Read status byte query
Trigger
Queries the current contents in the Status Byte Register.
Triggers the switchbox to advance the scan when scan is enabled and
trigger source is TRIGger:SOURce BUS.
*RCL<n>
*SAV<n>
Recall saved state
Save state
Recalls previously stored Microwave Switch module configuration.
<n> (0 to 9) is the location in memory where the desired (previously
stored) set-up is located.
Stores present settings of ARM:COUNt, TRIGger:SOURce,
OUTPut[:STATe], INITiate:CONTinuous, SCAN:MODE, and
SCAN:PORT. <n> (0 to 9) is the location in memory where the current
set-up is located.
Note: See the HP 75000 Series B E1300/E1301 Mainframe User’s Manual or the ANSI/IEEE Standard 488.2-1987 for
more information about these commands.
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Command Quick Reference
The following tables summarize SCPI and IEEE 488.2 Common (*)
Commands for the Microwave Switch modules.
SCPI Commands for Quick Reference
Command
Description
ABORt
ARM
Abort a scan in progress.
:COUNt <number> MIN | MAX
:COUNt? [MIN | MAX]
Multiple scans per INIT command.
Query number of scans.
Selects module to be monitored.
Selects monitor mode.
Query the monitor mode state.
DISPlay:MONitor:CARD <number> | AUTO
:MONitor[:STATe] <mode>
:MONitor[:STATe]?
INITiate
:CONTinuous <mode>
:CONTinuous?
[:IMMediate]
Enables/disables continuous scanning.
Query continuous scan state.
Starts a scanning cycle.
Enables/disables "Trig Out" pulse.
Query port enable state.
OUTPut
[:STATe] <mode>
[:STATe]?
Close channel(s).
Query channel(s) closed.
Open channel(s).
[ROUTe:]
CLOSe <channel _list>
CLOSe? <channel _list>
OPEN <channel _list>
OPEN? <channel _list>
SCAN <channel _list>
SCAN:MODE NONE | VOLT | RES
SCAN:MODE?
Query channel(s) opened.
Define channels for scanning.
Selects scan mode.
Query state of scan mode.
STATus:OPERation:ENABle
Enables the Operation Status Register to set a bit in the
Status Register.
Query the contents in the Operation Status Register.
Returns status of the Operation Status Register.
:OPERation:ENABle
:OPERation[:EVENt]?
Returns description of module in a switchbox.
Sets specified module to its power-on state.
Returns the module type.
SYSTem
TRIGger
:CDEScription? <number>
:CPON <number> | ALL
:CTYPe? <number>
:ERRor?
Returns error number/message in a switchbox Error Queue.
[:IMMediate]
Causes a trigger to occur.
Trigger source is *TRG.
Trigger source is "Event In" BNC.
Hold off triggering.
Continuous (internal) triggers.
Query scan trigger source.
:SOURce BUS
:SOURce EXTernal
:SOURce HOLD
:SOURce IMMediate
:SOURce?
IEEE 488.2 Common Commands Quick Reference
Command
*RST
Title
Reset
Description
Opens all channels, and invalidates current channel list for scanning.
Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.
*TRG
Bus Trigger
When scan is enabled and trigger source is TRIG:SOUR BUS, use the *TRG
command to trigger the switchbox to advance the scan.
*TST?
Self Test query Always returns 0.
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Appendix A
HP E1368A/69A/70A Specifications
STANDARD VXIbus
INFORMATION
HP E1368A Microwave Switch
HP E1370A
Voltage:
+5
(Applies to both the HP E1368A
and E1369A unless otherwise noted)
Peak module current,
IPM(A): 0.01
Dynamic module current,
IDM(A): (see note 2)
Watts/slot: 0.50
Frequency Range:
DC-18 GHz
Module Size/Device Type:
B, register-based
Characteristic Impedence:
50Ω
0.08mm H O
2
@0.05 liter/sec
(see note 2)
Connectors Used: P1
Insertion Loss:
DC-2GHz:
DC-18GHz:
<0.25dB
<0.50dB
No. Slots:
MISCELLANEOUS:
E1368, E1369
E1370
1
2
Isolation:
DC-18GHz:
Humidity:
>90dB
65%, 0°to 40°C
VXIbus interface capability:
Slave, Interrupter, A16, D16
VSWR (50Ω load):
Operating Temperature:
0° to +55° C
DC-2GHz:
<1.15dB
Interrupt level:
1-7, selectable
DC-12.4GHz:
DC-18GHz:
<1.25dB
<1.40dB
Storage Temperature:
-40° to +75° C
POWER REQUIREMENTS:
Maximum Input Power:
1 Watt average.
100 Watts peak.
<±7Vdc
EMC, RFI, Safety:
meets FTZ 1046/1984, CSA 556B,
IEC 348, UL 1244
HP E1368A
Voltage:
Peak module current,
IPM(A): 1.30
Dynamic module current,
IDM(A): 0.01
+5
Repeatability (typical):
6
Net weight (kg):
0.03dB after 10 switching
HP E1368A:
HP E1369A:
HP E1370A:
0.5
0.2
??
Watts/slot: 5.00
Cooling/slot:
HP E1369A Microwave
Switch Driver
0.08mm H 0 @ 0.42 liter/sec
2
NOTES:
Switching Dwell Time:
35msec
HP E1369A
Voltage: +5
1. Control circuit can switch a
maximum of 1A per switch.
Maximum current also depends on
the output capability of the
mainframe used.
2. Power and cooling requirements
depend on switches installed; see
HP E1368A for an example of the
requirements for 3 HP 3331X or
HP 876X switches.
Peak module current,
IPM(A): 0.01
Dynamic module current,
IDM(A): (see note 2)
Watts/slot: 0.50
Cooling/slot:
Driver OutPut per switch:
5V or 12V (see note 1)
Maximum Energizing Voltage:
42Vpk (see note 1)
0.08mm H 0 @ 0.05 liter/sec
2
(see note 2)
Appendix A
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Appendix B
HP E1368A/69A/70A Registers
Register Definitions
All three Microwave Switch modules are register-based devices. See the
tables below for register definitions.
Manufacturer ID Register
b + 0016 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Write
Undefined
Manufacturer ID
Read**
*Returns FFFF = Hewlett-Packard A16 only register-based.
16
Device Type Register
b + 0216 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Write
Undefined
Manufacturer ID
Status/Control Register
Read**
b + 0416 15 14 13 12 11 10
Write*
9
8
7
6
5
4
3
2
1
0
Undefined
B
Read**
Manufacturer ID
7F16
*R = Switch reset to power-on state (all switches open)
**R = Status “busy” is true low in bit #7 (FF7F )
16
Channel Enable Registers
b + 0816
Write*
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CH04 CH03 CH02 CH01 CH00
Read*
Always Returns FFFF16
Appendix B
HP E1368A/69A/70A Registers 75
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n
Addressing the Registers
To read or write to specific registers, you must use the register address.
Register addresses for HP 75000 Series C plug-in modules are in address
space VXI A . The locatio of A16 within the mainframe/command
16
module memory map depends on the mainframe/command module used.
For example, the A16 location of the HP E1300/E1301 Mainframe starts at
1F0000
(
= HEX).
16 16
The A16 space is divided so modules are addressed only at locations
beginning with C000 within A16. Allocated for each module are 64
16
register addresses (40 ). The module base address is related to the logical
16
address set by the module’s logical address switch (LADDR). The module
address is:
module address 16 = (logical address 16) * 4016 + C00016
For the Microwave Switch modules, the default logical address is 120
(78 ), thus the module address within A16=
16
7816 * 4016 + C00016 = DE0016
For example, to address the Status/Control Register of a Microwave Switch
module in an HP E1300/E1301 Mainframe, the command register address is:
[A16 location]16 + [module address]16 + [register offset]16
1f00016 + DE0016 + 0416 = 1FDE0416
=
Reading the Registers
You can read the following Microwave Switch registers:
• Manufacturer ID Register (base + 00 )
16
• Device Type Register (base + 02 )
16
• Status/Control Register (base + 08 )
16
• Channel Enable Register (base + 08 )
16
ID and Device Type ID Register: Reading the register returns: FFFF . This shows
16
Hewlett-Packard as the manufacturer and that the module is an A16
register-based device.
Registers
Device Type Register: Reading this register returns FF28 if the device is
16
either the E1368A Microwave Switch module, or the E1369A Microwave
Switch Driver module.
76 HP E1368A/69A/70A Registers
Appendix B
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Status/Control Each coaxial switch requires about 30 msec execution time (close to open or
open to close) during which time the switch is "busy". A read of the
Register
Status/Control Register (base + 04 ) returns FFFF when the module is
16
16
not busy or returns FF7F (bit 7 is low-true) when the module is busy.
16
Channel Enable A read of the Channel Register (base + 08 ) always returns FFFF ,
16
16
regardless of the channel states.
Register
Writing to the Registers
You can write the following Microwave Switch registers:
Channel Enable Register (base + 0816)
Channel Enable Writes to the Channel Enable Register (base + 08 ) enable you to open or
16
close the desired channel. For example, write a "1" to bit 2 of the Channel
Enable Register to close channel 02. Or, write a "0" to bit of the register to
open channel 00.
Register
Note
All HP 3331X and HP 876X Microwave Switches are latching and will
remain in the last state during power down. Performing a reset (or at
power-up) opens all channels (refer to Figure 2-6). Any combination of
channel open or closed states is allowed.
Appendix B
HP E1368A/69A/70A Registers 77
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78 HP E1368A/69A/70A Registers
Appendix B
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Appendix C
HP E1368A/69A/70A Error Messages
Table C-1 lists the error messages associated with the Microwave Switch
module programmed by SCPI. See the appropriate mainframe manual for a
complete list of error messages.
Table C-1. Microwave Switch Error Messages
No.
Title
Potential Cause(s)
-211 Trigger ignored
Trigger received when scan not enabled. Trigger received after scan
complete. Trigger too fast.
-213 INIT ignored
Attempted to execute an INIT command when a scan is already in
progress.
-224 Illegal parameter value
Attempting to execute a command with a parameter not applicable to
the command.
1500 External trigger source
already allocated
Assigning an external trigger source to a switchbox when the trigger
source has already been assigned to another switchbox.
2000 Invalid card number
Addressing a module (card) in a switchbox that is not part of the
switchbox.
2001 Invalid channel number
Attempting to address a channel of module in a switchbox that is not
supported by the module (e.g., channel 99 of a multiplexer module).
2006 Command not supported
on this card
Sending a command to a module (card) in a switchbox that is
unsupported by the module.
2008 Scan list not initialized
Executing a scan without the INIT command.
2009 Too many channels in
channel list
Attempting to address more channels than available in the switchbox.
2010 Scan mode not supported Sending a command to a module (card) in a switchbox that is
on this card
unsupported by the module
2012 Invalid Channel Range
Invalid channel(s) specified in SCAN <channel_list> command.
Attempting to begin scanning when no valid channel list is defined.
2600 Function not supported on Sending a command to a module (card) in a switchbox that is not
this card
supported by the module or switchbox.
2601 Channel list required
Sending a command requiring a channel list without the channel list.
Appendix C
HP E1368A/69A/70A Error Messages 79
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Index
HP E1368A/69A/70A Modules User’s Manual
C
Channel
Closing
A
Address
Coaxial Switches
Attenuators
Commands
B
HP E1368A/69A/70A Modules User’s Manual Index 81
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D
E
E1368A
E1369A
Connecting
E1370A
Current
Error
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Examples
Internal
Interrupt
External
J
Jumpers
F
L
G
H
M
HP-IB
Maximum
I
Multiple
Installing
HP E1368A/69A/70A Modules User’s Manual Index 83
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N
Q
Query
O
Opening
R
P
Port
Reset
Ribbon Cable
84 HP E1368A/69A/70A Modules User’s Manual Index
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Signals
S
Scanning
Switchbox
Switches
Selecting
Setting
HP E1368A/69A/70A Modules User’s Manual Index 85
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Switching
W
Synchronizing
T
Transfer Switch
U
Using
V
Voltage
86 HP E1368A/69A/70A Modules User’s Manual Index
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