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LG 3803
8VSB/QAM SIGNAL GENERATOR
INSTRUCTION MANUAL
LEADER ELECTRONICS CORP.
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5.4 LEVEL ..................................................................................................................... 5-6
5.5 BER......................................................................................................................... 5-7
5.5.1 SETUP......................................................................................................... 5-8
5.6 UTILITY................................................................................................................... 5-9
5.6.1 CONFIG....................................................................................................... 5-10
5.6.2 TCP/IP ......................................................................................................... 5-11
5.6.3 GPIB ADDRESS.......................................................................................... 5-12
5.6.4 PRESET GROUP ........................................................................................ 5-13
5.6.5 CF ACCESS ................................................................................................ 5-14
6. PRESET, GROUP ............................................................................................................ 6-1
6.1 Preset...................................................................................................................... 6-1
6.2 GROUP ................................................................................................................... 6-1
7. REMOTE CONTROL........................................................................................................ 7-1
8. GPIB ................................................................................................................................ 8-1
8.1 Specifications .......................................................................................................... 8-1
8.2 Interface Function.................................................................................................... 8-1
8.3 Interface Message Function.................................................................................... 8-2
8.4 GPIB Address.......................................................................................................... 8-2
8.5 Clear, Reset............................................................................................................. 8-3
8.6 REMOTE/LOCAL .................................................................................................... 8-3
8.7 Multiline Message Command.................................................................................. 8-4
8.8 Program Message Format....................................................................................... 8-4
8.9 Program Message Terminator................................................................................. 8-4
8.10 Program Code Format............................................................................................. 8-4
8.11 Program Code List .................................................................................................. 8-5
8.12 Detail Program Code............................................................................................... 8-7
9. ETHERNET ...................................................................................................................... 9-1
9.1 Connection .............................................................................................................. 9-1
9.2 Operating with Personal Computer ......................................................................... 9-1
10. MAINTENANCE ............................................................................................................... 10-1
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GENERAL SAFETY SUMMARY
■ To Avoid Personal Injury
It is recommended that only qualified personnel with technical knowledge use this
instrument only after reading and fully understanding all functions of the instrument
described this instruction manual.
This instrument is not designed and manufactured for consumers.
If you do not have enough knowledge on electricity, to avoid personal injury and prevent
damage to this product, please be sure to use this product only under the su-pervision of an
engineer who has sufficient knowledge about electronics.
■ Precautions on Contents
Should you find the contents in this manual and any of its technical terms confusing, please
feel free to contact your local Leader agent.
■ Symbols and Terms
Following terms and symbols indicate necessary warnings and cautions used in this
manual and on the product are there for safe operation.
The sections where this symbol is marked in this manual or
instrument, if not correctly performed or practiced, could result in
＜Symbol＞
personal injury or cause serious danger to the instrument.
Misuse could also produce unintentional movement to create an
operational impediment on the instrument or other products that
might be connected to it.
Be sure to refer to the safety precautions in this manual to safely
use the part of the instrument where the symbol is marked.
＜Term＞
Warning statements identify warning conditions that if
disregarded or not correctly performed or adhered to, could
result in serious personal injury or even loss of life.
WARNING
＜Term＞
Caution statements identify warning conditions if disregarded or
not correctly performed or adhered to, could result in personal
injury or damage to the instrument.
CAUTION
I
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GENERAL SAFETY SUMMARY
Review the following safety precautions to avoid operator's injury and loss of life and prevent
damage and deterioration to this instrument. To avoid potential hazards, use this product as
specified.
WARNING
■ Warnings on the Cases and Panels of the Instrument
Operator should not remove any cases or panel for any reasons. If you touch inside the
instrument it could result personal shock or fire hazard. Refrain from spilling any liquid
on or inserting anything flammables or piece of metal into the ventilation of the instrument.
Such actions could cause fire, shock, malfunction and be an accident hazard while the
power is on.
■ Warnings on Power Line
● Make sure to connect only to the rated power line voltage. Excess voltage may
cause fire.
Confirm the voltage of the commercial power line before connecting the AC power
cord. The power frequency of the power line should be 50/60 Hz.
● Warning on the Power Cord
Use only the optional power cord that is attached to this instrument. The use of the
power cord other than that attached could cause fire hazard.
If the attached cord is damaged stop using it and contact your local Leader agent.
Should you use a damaged cord, it could cause a shock or create a fire hazard. When
you pull out the cord be sure to hold it by plug and pull from the socket not by holding
the cord wire.
■ Warning on Fuse
When the fuse is melted the instrument stops operation. If the fuse melted, turn off the
power switch and disconnect the power plug from the socket. If you change the fuse
while the cord is connected to the socket, it could cause a shock hazard. Only use the
specified type and rated current and voltage fuses.
If the cause for melting fuse is unclear or if you suspect there is damage to the instrument
or if you have no proper fuse at hand please contact your local Leader agent.
II
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GENERAL SAFETY SUMMARY
WARNING
■ Warning on Installation Environments
● About the Guaranteed Operating Temperature Range
Operate the instrument between the temperature range of 0 to 40 °C. Operating the
instrument at higher temperatures could cause a fire hazard.
Rapid changes of temperatures from cold to warm can create internal moisture or
condensation and could damage the instrument. If there is a possibility of moisture
condensation allow the instrument to sit for 30 minutes without the power on.
● About the Guaranteed Operating Humidity Range
Operating humidity range is ≤ 85 % RH.
Do not operate the instrument with wet hands, This could cause a shock and fire
hazard.
● About the Operation in the Presence of Gasses
Operating the instrument in and near the presence or storage locations of flammable,
explosive gasses or fumes could create an explosion and fire hazard. Do not operate
the instrument anywhere near such environments.
● Avoid Insertions
Do not insert metals or flammable objects or drop liquid on or into the instrument. To
do so could cause fire, shock, malfunction and create a dangerous accident hazard.
■ Warning while Operating
While operating the instrument in smoke, fire, or a bad smell, occurs, turn off the
instrument at once for it could cause a fire hazard. When such a case occurs, turn off the
power switch and pull the plug of the cord from the plug socket. Contact your local Leader
agent after confirming there is no fire.
■ Warning about Ground
The instrument has a ground terminal to avoid electric shock hazard and to protect the
instrument from damage. Ensure that the product is properly grounded for safe operation.
III
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GENERAL SAFETY SUMMARY
CAUTION
■ Caution on Input/Output Terminals
Input Terminals are rated with a maximum input. Do not supply an input over the specified
rating in the standard section of the instruction manual. Also, do not supply external
power to Output terminal, this could cause the instrument to malfunction.
■ Caution when Not to Using Instrument the for a Long Time
Make sure to disconnect the power cord from the socket when you do not use the
instrument for a long time.
■ Calibration
This instrument is produced under the strictest quality controls at the factory, but
accuracy may gradually deteriorate due to worn components.
Therefore, periodic calibration should be performed.
When service or calibration is required, contact your local Leader agent.
■ Routine Maintenance
Remove the power cord plug from the socket when cleaning the instrument.
Avoid the use of thinner or benzene solvents for cleaning cases, panels and knobs since
this might remove the paint or damage plastic surfaces.
Wipe cases, panels, and knobs lightly with a soft cloth damped with neutral detergent.
Do not allow water, detergent, or other foreign objects to enter the instrument while
cleaning.
If a liquid or metal object enters the instrument, it can cause electric shock or fire.
Please conform to the above warnings and cautions for safe operation. There are cautions in
each area of in this instruction manual, so please conform to each caution. If you have any
questions about this manual, please feel free to contact your local Leader agent.
IV
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1. INTRODUCTION
Thank you for purchasing Leader’s measuring instruments.
Please read this instruction manual carefully to ensure correct and safe operation.
If you have any difficulties or questions on how to use the instrument after you have read this
manual, please feel free to contact your local Leader agent.
After you have read the manual, keep the manual in a safe place for quick reference.
1.1 Scope of Warranty
This Leader instrument has been manufactured under the strictest quality control
guidelines. Leader shall not be obligated to furnish free service during the warranty period
under the following conditions.
1. Repair of malfunction or damages resulting from fire, natural calamity, or improper
voltage applied by the user.
2. Repair of an instrument that has been improperly repaired, adjusted, or modified by
personnel other than a factory-trained Leader representative.
3. Repair of malfunctions or damages resulting from improper use.
4. Repair of malfunctions caused by devices other than this instrument.
5. Repair of malfunctions or damages without the presentation of a proof of purchase or
receipt bill for the instrument.
1.2 Operating Precautions
WARNING
1.2.1 Line Voltage and Fuse
Confirm that the power line voltage is correct before connecting the power cord.
The voltage range and fuse rating are indicated on the rear panel.
The instrument must be connected to the rated line voltage and line frequency of 50 Hz
to 60 Hz.
When replacing the fuse, turn the power switch off and disconnect the power cord from
the outlet.
When replacing the fuse, use the correct fuse that matches the line voltage.
Voltage Range
90 to 250 V
Fuse Rating
2 A, time-lag
Leader Parts Number
436 3580 013
1-1
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CAUTION
1.2.2 Maximum Input Voltage
There is restriction when applying input signals.
Applying excessive voltage to the connector may result instrument damage.
Connector
Allowable Input Voltage
REMOTE CONTROL
INC, DEC, RESET Pins
-0.5 V/+5.5 V
2.5 Vp-p
FREQ STD 10 MHz INPUT
SYNC, VALID, CLOCK, DATA
-0.5 V/+5.5 V
CAUTION
1.2.3 Reverse Voltage, Excessive Voltage
Do not apply external voltage to the output connectors.
If the cable touches such as DC power source, internal attenuator may be burned-out.
Do not apply 5 Vp-p or greater signal to the output connector.
If ±2V or greater DC component is superimposed, block it using a capacitor.
1.2.4 Backup of Control Settings
This instrument retains the panel settings even when the power is turned off. The
setting can be recalled when the power is turned on.
When the instrument is left for five years without supplying power, the stored data may
be lost.
Notes on Backup Data
Data must be backed up properly since stored data may be lost or changed caused
by incorrect operation, malfunction, or maintenance. A notepad may be helpful in
some cases.
1-2
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1.2.5 Installation
Do not use the instrument in the following environments.
• High temperature environments
Do not place the instrument under direct sunlight or near a heater (e.g., stove). Do not
move the instrument from cold to warm environment abruptly, it may cause
condensation.
Operating temperature range: 0 to 40 ˚C
5 to 40 ˚C (When Option 70 is installed.)
• High humidity environments
Do not place the instrument in the high humidity environment (e.g., bathroom, near a
humidor).
Operating humidity range: ≤85 % RH (without condensation)
• Dusty environments
1.2.6 Mechanical Shock
To prevent damage to the precise components used in this instrument, be careful not to
expose the instrument to other forms of severe mechanical shock.
1.2.7 About Network
The remote control capability operation via the Ethernet is confirmed only under the local
network environments; it is not guaranteed under other environments.
1-3
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2. SPECIFICATIONS
2.1 Description
The LG 3803 8VSB/QAM Signal Generator, conforms to 8VSB (digital terrestrial TV in
USA System) and 64QAM/256QAM (CATV) standards, features a channel coding,
modulation, C/N generator, and up converter in a single package. Consequently, the
modulated signal covering VHF and UHF channels can be output.
Providing pseudo random signal (PN) and BER counter can perform BER measurement of
receivers and tuners with a signal unit.
In addition to the internal TS signal, the external MPEG-2 TS can be used to evaluate
video, and sound quality. Such powerful features are ideal for total evaluation of a
reception system.
2.2 Features
• All-in-one
This instrument features the signal generator capability and BER measurement
capability in a single package.
The BER function is used to measure the front-end section, the broadcasting MPEG-2
TS function is used to visually check entire systenckage.
2.3 Specifications
2.3.1 Channel Coding Section
(1) Broadcasting system
Digital Terrestrial (ATSC A/53B)
CATV (ITU-T J.83 annex B)
(2) Modulation system
8VSB/64QAM/256 QAM
2.3.2 RF Signal Generator
(1) Frequency
Range
50 to 900 MHz
1 kHz, set in frequency
USA, KOREA
±0.4 x 10-6
Resolution
Channel
Accuracy
(2) Output
Range
-100 to +13 dBm (into 50 Ω)
Resolution
Impedance
Level Accuracy
Output Connector
Harmonics
Spurious
0.1 dB
50 Ω
±1 dB (at 0 dBm, C/N off)
N type
-30 dBc
-50 dBc
2.3.3 Input/Output Signal Sources
(1) Internal Signal
Pseudo Random Signal PN23
Still Picture Pattern
Screen Size
16:9
Color bar, ramp, monoscope (＊1)
1920 x 1080i, 1280 x 720p, 704 x 480i (＊1)
704 x 480i (＊1)
4:3
Sound (Tone)
1 kHz (LR), 400 Hz (LR), 1 kHz (L) + 400 Hz (R) (＊1)
＊1: Specifications are subject to change
(4) ASI, SPI Input Specifications
Input Packet Format
Applicable Stream
Input Data Rate
188 bytes
MPEG-2 TS (ISO/IEC 13818-1)
25 Mbps max.
(5) FREQ STD Input
Input Connector
Input Impedance
Input Level
BNC
50 Ω
0.8 Vp-p
10 MHz
Input Frequency
(6) FREQ STD Output
Output Connector
Output Impedance
Output Level
BNC
50 Ω
+4 dBm
10 MHz
Output Frequency
(7) 4-Wire Serial BER Input
Input Connector
Input Level
BNC
LVTTL 3.3 V
Input Signal
SYNC, VALID, CLOCK, DATA
(8) TS Clock Output
Output Connector
Output Impedance
Output Level
BNC
50 Ω
TTL
Output Frequency
8VSB
64QAM
2.424083 MHz
3.371294 MHz
256QAM 4.851338 MHz
2.3.4 C/N Generator Section
C/N Variable Range
Setting Resolution
On/Off
0 to 31 dB
0.1 dB
Selectable
2.3.5 BER Counter Section
(1) Input Section
Packet Length
Input Connector
188 bytes
DVB-SPI connector, serial input
(2) GO/NO-GO Function
Threshold Settings
Upper and lower limits of BER
GO/NO-GO Indication Displays GO/NO-GO on the screen.
2-3
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2.3.6
External Interface
(1) Memory Card Interface
Memory Card
Compact flash card (CFA TYPE-I)
Function
Updating firmware, changing internal TS-ROM
(2) ETHER Interface
Specifications
Function
10BASE-T or 100BASE-TX
Setting this instrument, reading status
(3) GPIB
Specifications
Function
ANSI/IEEE Std 488.1-1987.
SH1, AH1, T8, L4, SR0, RL2, PP0, DC1, DT0, C0, E1
(4) USB Interface
3. PANEL DESCRIPTIONS
3.1 Front Panel
14
○
11 13
○ ○
18
○
3
○
2
○
4
○
21
○
9
○
8
○
10
○
5
12
16
15
6
○
17
19
○
20
○
7
○
○ ○
○ ○
1 ○
○
Figure 3-1 LG 3803 front panel
1 POWER switch
○
Push this switch in to apply power. Release this switch for turning power off. The
setting conditions immediately before turning power off can be recalled.
2 LCD panel
○
Indicates the setting conditions in Graphical User Interface (GUI).
3 Function keys (F1 to F5)
○
Set functions. The functions are displayed on the LCD panel.
4 MENU keys
○
Set functions. Six keys are provided.
CODING
NOISE
CHANNEL
LEVEL
Selects broadcasting system, input source, modulation parameter, etc.
Selects noise signal on/off. Sets the CN value.
Sets the RF output channel. The channel can also be set in frequency.
Sets the output level.
BER
UTILITY
Controls and sets the Bit Error Rate (BER).
Sets the various setting.
5 USB connector
○
USB 1.1 connector
Connects an external equipment such as keyboards. (Future support)
6 Access lamp
○
Lights when this instrument is accessing the memory card 7 .
○
3-1
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7 MEMORY CARD slot
○
Only used when the memory card contents are upgraded or updated.
8 UP MENU key
○
While displaying the setting screen, pressing this key enters the current data, then returns
to the upper level by one.
Holding down this key for at least one second enters the current setting, then returns to the
top screen.
9 Ten key (0 to 9 . -)
○
Directly enter such numeric data as level, channel (frequency), CN. Press ENTER 10
key to enter data.
○
10 ENTER key
○
Enters numeric data set.
11 Arrow keys { ↑(INC), ↓(DEC), ← (BACK), → (NEXT)}
○
<↑, ↓keys>
・Increments and decrements numeric data {i.e., level, channel (frequency), CN}.
・Moves the arrow to the PID number to be selected in external input mode.
・Increments and decrements the PID value between 0 and F when data is input in
hexadecimal numbers.
Difference between Up (F2)/Down (F4) keys and ↑/↓ keys
F2, F4 keys
↑, ↓ keys
Increments and decrements the value by preset step size.
Increments and decrements the value by preset step size.
Holding down this key continuously changes the value.
< ←, → keys>
・Moves the arrow to the PID number to be selected in external input mode.
・When entering PID value (hexadecimal numbers):
pressing the → key enters the value at the current digit, then moves to the next digit.
pressing the ← key cancels the value at the current digit, then returns to the previous
digit.
12 ALL CLEAR key
○
Clears input data (i.e., numeric data, hexadecimal data).
13 PRESET display
○
Displays the last selected preset number.
14 ADDRESS key
○
Specifies the address to be stored or recalled.
15 STORE key
○
Stores the current setting in the address.
3-2
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16 RECALL key
○
Recalls the setting conditions in the specified address.
17 ↑, ↓ key
○
Increments and decrements the specified address.
18 UNIT key (UNIT)
○
Selects either this instrument or OOB when the LG 3803-01 unit is connected.
19 REMOTE key (REMOTE)
○
Switches the remote control mode to local control mode. This key is disabled in local
control mode.
20 RF OUTPUT connector
CAUTION
○
Outputs RF signal. Refer to Section 2.3.2, "RF Signal Generator" for specifications.
21 Option compartment
○
Compartment to install the Moving Picture Option (OP70).
3-3
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3.2 Rear Panel
22 24
○ ○
27
31
32
33
34
26
○
31 39
○ ○
○ ○ ○ ○ ○
23 25
○ ○
28 29
○ ○
30
○
35 36
○ ○
37
○
38
○
Figure 3-2 LG 3803 rear panel
22 FREQ STD 10 MHz INPUT connector
○
Accepts the external reference signal. Apply 10 MHz reference signal when operating
this instrument in synchronized with the equipment connected.
23 FREQ STD 10 MHz OUTPUT connector
○
Synchronizes other equipment.
24 Serial BER CLOCK signal input connector (BER SERIAL INPUT CLOCK)
○
Used for BER measurement in serial connection.
25 Serial BER SYNC signal input connector (BER SERIAL INPUT SYNC)
○
Used for BER measurement in serial connection.
＊This connector is only used when the "Serial (4 Wire)" is selected on the screen.
26 Serial BER DATA signal input connector (BER SERIAL INPUT DATA)
○
Used for BER measurement in serial connection.
27 Serial BER VALID signal input connector (BER SERIAL INPUT VALID)
○
Used for BER measurement in serial connection.
＊This connector is only used when the "Serial (4 Wire)" is selected on the screen.
28 TS clock output connector
○
Outputs the TS clock to synchronize the external TS input.
29 TS INPUT DVB-ASI connector
○
Accepts the external TS signal. Apply the TS in DVB-ASI format.
30 TS INPUT DVB-SPI connector
○
Accepts the external TS signal. Apply the TS in DVB-SPI format.
3-4
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31 Cooling fans (Two places)
○
To prevent instrument damage due to overheating, do not block airflow through the
ventilation holes.
If the fan stops, the LCD panel displays alarm message.
Turn the instrument power off immediately, then contact your local Leader agent in this
case.
32 ETHER connector
○
Control connector for 10BASE-T or 100BASE-TX.
33 USB connector
○
Factory use only. Leave this connector open.
34 REMOTE CONTROL connector
CAUTION
○
Used to up/down and return operations for the preset value.
Refer to Chapter 7 "REMOTE CONTROL."
35 GPIB connector
GPIB interface connector.
36 AC INPUT
AC power inlet. The accessory power coed should be used. The AC voltage range is 90
to 250 V.
Refer to Section 1.2.1, "Line Voltage and Fuse" for detail.
37 FUSE
CAUTION
The mains fuse is installed. Use only the fuse of correct type and rating for replacement.
Refer to Section 1.2.1, "Line Voltage and Fuse" for detail.
38 GND terminal
Grounding terminal connected to the chassis of this instrument
39 Serial number plate
Instrument serial number. Provide this number when contacting us.
3-5
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4. LCD PANEL DESCRIPTION
4.1 Turning Power On and Starting Instrument
Connect the accessory power cord between the AC inlet on the rear panel and the mains.
Press the POWER switch to turn power on for starting the system. Whit for about 45
seconds until the top screen (Status screen) is displayed. The setting conditions
immediately before turning power off will be recalled.
4.2 Screen Description
The screen display consists of the top screen and various setting screens. The
followings describe the typical screens.
<Top Screen>
3
○
1
○
○
2
4
○
○
10
○
5
○
9
6
○
7
○
8
○
11
○
12
○
13
○
Figure 4-1 Top screen
1
2
3
4
5
6
Screen title
Indicate the top (Status) screen.
Unit information
Group
Indicate the setting parameter of this instrument or OOB.
Displays the preset group number.
TS signal selection
Carrier modulation (Current)
Channel, frequency
Selects the TS to be used.
Displays the carrier modulation setting status.
Displays the channel number when the RF signal is set in
channel.
Displays the frequency in units of MHz when the RF
signal is set in frequency.
7
Output level
Displays the output level.
4-1
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8
9
BER result display
Interleave
Displays the Bit Error Rate (BER) measurement value
and GO/NO-GO results based on the threshold values.
Displays "- - -" when the carrier modulation is 8VSB.
Displays the interleave length when the 64QAM or
256QAM is selected.
10 Country
Displays the channel table: USA or KOREA.
11 C/N level
Display the C/N level. "- - -" is displayed when the C/N is
set off.
12 Key lock
Displays the panel key lock status.
13 Alarm display
Display alarm status for cooling fan, TS input, reference
signal and OOB.
<< Key lock >>
Restricts the front panel key operations.
Off
Part
All
Enables all keys.
Disables all keys except the Address, ↑/↓(PRESET), and RECALL keys.
Disables all keys.
<<About top screen>>
• The top screen displays the titles.
See each setting screen for detail.
• The top screen is displayed when one of the following operations are performed:
(1) Immediately after the power is turned on.
(2) UP MENU key is held down for at least one second.
(3) ADDRESS key is pressed.
(4) Preset status is recalled by using the RECALL key, or ↑ or ↓ key in the
PRESET group.
<< Setting/controlling on the top screen >>
• The following operations can be performed on the top screen.
Pressing the F5 key enables key lock mode.
Pressing the F4 key can playback/stop the TS when the Moving Picture Option
(OP70) is installed.
For other items, press the menu key, then set as required on the appropriate setting
screen.
4-2
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<<Alarm display on the top screen>>
• The following alarm message is displayed on the top screen. Message is displayed
in red.
[FAN]
Indicates cooling fan trouble. If this alarm is displayed, turn the
instrument power off, then contact your local Leader agent.
[TS IN]
Monitors each input signal when SPI/ASI is selected as TS input. The
SPI input in BER measurement mode is also monitored.
The alarm is displayed in the following status:
(1) No signal is input.
(2) When the signal other than transport stream (MPEG-2 TS) is input.
(3) When five packets or more packets except 0x47 are continuously
received at the header byte position.
[F STD]
[OOB]
Monitors the reference signal. The alarm is displayed in the following
status:
(1) No signal is applied.
(2) Input signal frequency exceeds the PLL lock range.
(3) Input signal level is lower than the acceptable level range.
In case of the LG 3803-01 is incorrectly connected.
4-3
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<Setting screen example "CODING">
14
○
15
○
16
○
18
○
17
○
16
○
14
○
15
○
16
○
18
○
17
○
Figure 4-2 Setting screen example (1)
14 Screen title, hierarchical
layer display
Displays the screen title and hierarchical layer from the top
menu.
15 Unit information
16 Selection status
Indicate the setting parameter of this instrument or OOB.
Use the corresponding key when changing the settings. The
selected item is displayed in white character on the blue
background. Pressing the key sequentially selects the item.
17 Disabled function
18 Function
Items displayed in gray title is currently disabled or optional
functions.
Displays the functions assigned to the F1 to F5 keys.
When ">>>" is displayed on the bottom of the function display,
use the next hierarchical layer for settings.
4-4
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