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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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<Setting screen example "LEVEL">
19
○
19
○
20
○
Figure 4-3 Setting screen example (2)
19 Numeric value display column
Displays the current setting value.
When data is set by using the numeric keypad, the value
is displayed in white on the black background.
Press the ENTER key to enter data. The value is only
entered when the value is within the acceptable range.
20 Step display
The numeric value can be sequentially updated in preset
steps displayed in the step size column.
Pressing the F2 (Up) or F4 (Down) key
increments/decrements the value preset by using the F3
key. The ↑ or ↓ key in the DATA ENTRY can also
be used as well.
<Operation procedure>
(1) Pressing either key in the MENU group enters the setting screen.
(2) To return to the upper hierarchical layer, press the UP MENU key. Press this key
repeatedly to return to the uppermost hierarchical layer.
(3) Holding down the UP MENU key for at least one second any hierarchical layer returns
to the top menu.
(4) There are two setting methods:
・For the items set on the CODING menu, data is entered when the UP MENU key is
pressed to return to upper hierarchical layer or to the top menu.
・For other items {level, channel (frequency), C/N, etc.}, data is directly entered when
the value or settings are changed.
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4.3 Menu
The top screen only displays the current setting status; there is no setting items.
When changing the setting status, press the MENU key to display the setting screen.
The MENU key function is listed below:
CODING
NOISE
Selects the broadcasting system and modulation mode.
Selects the TS input source.
Sets the Interleave.
Selects the CW on/off.
(Refer to Section 5.1.)
Sets the CN level value.
Sets the CN addition on/off.
(Refer to Section 5.2.)
CHANNEL
LEVEL
BER
Sets the RF output channel (or RF frequency).
(Refer to Section 5.3.)
Sets the output level.
(Refer to Section 5.4.)
Controls the BER measurement function.
Sets the threshold level for GO/NO-GO judgement.
(Refer to Section 5.5.)
UTILITY
Sets the various setting
(Refer to Section 5.6.)
＊ To return to the top menu, hold down the UP MENU key for at least one second.
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5. USING MENU
5.1 CODING
Pressing the CODING key in the MENU group enters setting screen.
Figure 5-1 Coding screen
This screen is used to select the modulation mode and TS signal, and to set items related
to channel coding.
To exit settings, press other key in the MENU, or hold down the UP MENU key to return to
the top screen (status display).
• Source
(F1) Selects the input source. (Refer to Section 5.1.1.)
• Modulation (F2) Selects the broadcasting sy52245927o(dulation mod).
5.1.1 Source
The TS source can be selected by pressing the Source (F1) key on the Coding (L-1)
screen.
Notes on selecting TS_source
• The receiver is temporary unlocked when TS source (each pattern stored in the
ROM, PN, SPI, ASI) is switched since the coding circuit is reset.
• When the external TS (SPI, ASI) is selected, reception capability is disabled if TS
INPUT alarm lights on the top screen or TS exceeding allowable rate is input.
Figure 5-2 TS source selection screen
• TS Source (F2)
Selects the TS input to be used.
PN
Pseudo random signal in PN23
ROM
Modulates and outputs the video and sound signals stored in
the ROM.
External <SPI>
External <ASI>
Internal
TS input to the SPI connector on the rear panel is used.
TS input to the ASI connector on the rear panel is used.
TS of HDD on DVD is used when the Moving Picture Option
(OP70) is installed.
• Null Packet Filter (F4)
This key is only enabled when the External (i.e., SPI, ASI) is selected. The packet
with 0x1FFF PID is filtered off from the TS applied to the input connector.
Various carrier modulation capabilities can be increased by removing surplus null
packet.
• PCR Update (F5)
Channel coding is performed for the external TS applied.
The PCR should be rewritten to convert the rate. Set this function on in general.
Up to eight PCRs are rewritable for the external TS.
5-2
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(1) Selecting PN
The random signal (PN23) can be output by setting the Source to PN on the TS
Source (L-2) screen.
(2) Selecting ROM Pattern
The pattern stored in the ROM (called ROM pattern) can be selected by setting the
Source to ROM on the TS Source (L-2) screen, then press the Pattern (F1) key.
Figure 5-3 ROM pattern selection screen
• Pattern (F3)
Selects the video pattern.
Color Bar
Ramp
Eight-color full field color bar pattern
Full field ramp pattern
Monoscope
Monoscope pattern
• Video Format (F4)
Selects the size of patterns listed above.
1920 x 1080 (16:9)
1280 x 720p (16:9)
704 x 480i (16:9)
704 x 480i (4:3)
• Audio (F5)
Selects the sound pattern.
1 kHz (L, R)
Tone signal (1 kHz for both left and right)
400 Hz (L, R)
1 kHz (L) + 400 Hz (R)
Tone signal (400 Hz for both left and right)
Tone signal (1 kHz for left, 400 Hz for right)
The pattern, pattern size, and sound can arbitrary be combined.
(3) Selecting External <ASI or SPI>
The TS applied to the ASI or SPI connector is used by setting the TS Source to
External on the Source (L-2) screen.
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5.2 NOISE
Figure 5-4 C/N setting screen
• Up (F2)
Increments the C/N value by preset step size within the
acceptable range.
• Step Size (F3)
Sets the step size for Up and Down operations.
• Down (F4)
Decrements the C/N value by preset step size within the
acceptable range.
• C/N Addition (F5)
Sets C/N on/off.
The C/N value can be directly entered by using the numeric keypad, or changed by
using the↑,↓,Up (F2) and Down (F4) keys.
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5.3 CHANNEL
Figure 5-5 Channel or Frequency setting screen
Selects the channel tables of USA or KOREA.
• Country (F1)
• Up (F2)
Increments the channel or frequency by preset step size within the
acceptable range.
• Step Size (F3)
• Down (F4)
Sets the steps for Up and Down operations.
(＊Selectable only when frequency is set.)
Decrements the channel or frequency by preset step size within
the acceptable range.
• Input Item (F5)
Air Channel
Selects setting range and method of the RF frequency.
Use to set channel directly.
USA: [2 to 83 ch], KOREA: [2 to 12, 21 to 83 ch]
CATV Channel
Use to set CATV channel directly.
[C2 to C135 ch]
[C1 to C135 ch]
[C1 to C135 ch]
[C1 to C41 ch]
USA STD:
USA IRC:
USA HRC:
KOREA:
Fequency
Sets the CHANNEL in frequency.
The CHANNEL or FREQUENCY can be directly entered by using the numeric keypad,
or changed by using the↑,↓,Up (F2) and Down (F4) keys.
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5.4 LEVEL
Figure 5-6 Level setting
• Up (F2)
Increments the level value by preset step size within the
acceptable range.
• Step Size (F3)
• Down (F4)
Sets the steps for Up and Down operations.
Decrements the level value by preset step size within the
acceptable range.
The LEVEL can be directly entered by using the numeric keypad, or changed by using
the↑,↓,Up (F2) and Down (F4) keys.
5-6
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5.5 BER
Figure 5-7 BER setting and measurement
• BER Setup (F1)
Sets the BER measurement conditions. Refer to Section 5.5.1.
• Up (F2)
Increments the C/N or output level value by preset step size within
the acceptable range.
• Step Size (F3)
• Down (F4)
Selects the steps for C/N or output level.
Decrements the C/N or output level value by preset step size
within the acceptable range.
• Select (F5)
Selects the item by pressing the ↑,↓, up (F2) or Down (F4) keys
in the DATA ENTRY group. This function enables only when the
C/N is set on.
The setting value can be directly entered by using the numeric keypad, or changed by
using the↑,↓,Up (F2) and Down (F4) keys.
Notes on using BER function
＊The BER measurement mode is only enabled under the following conditions:
PN is selected for TS Source.
5-7
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5.5.1 BER SETUP
Figure 5-8 BER SETUP screen
• Interface (F2)
Selects the TS input for BER measurement.
Parallel
Use the SPI connector.
Serial (2 Wire)
Use both [CLOCK] and [DATA] connectors in the SERIAL
INPUT group.
Serial (4 Wire)
Use all of four connectors in the SERIAL INPUT group.
• Value Input Select (F5)
Selects the item to be set.
Upper
Lower
Sets the upper threshold value (close to 0) in GO/NO-GO
judgement mode.
Sets the lower threshold value (close to 1) in GO/NO-GO
judgement mode.
(Settable range: 0.00E-0, 1.00E-9 to 9.99E-1)
Measurement Cycle The measurement cycle can be set in 0.1 second steps.
The values can be directly entered by using the numeric keypad.
(1) When no signal is input to the SPI connector or there is asynchronous error on the TS,
the alarm lights on the top screen.
(2) When measurement starts, the top screen and BER screen display the measurement
value. "GO" is displayed when measurement value is with the threshold value;
"NO-GO" is displayed for outside the threshold.
5-8
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5.6 UTILITY
Figure 5-9 Utility screen
Software Version
Displays the control software version. Provide the serial number
indicated on the rear panel and software number when contacting
us.
TS ROM Version
Installed Unit
Displays the ROM pattern version.
Displays the option installed.
• Config (F1)
Address of TCP/IP and GPIB is displayed. (Refer to Section 5.6.1)
• Pre. Group (F2)
There are 100 preset conditions (i.e., consisting of 10 groups, 10 conditions per group).
The range can independently be incremented and decremented for each group.
(Refer to Section 5.6.4)
• OOB Unit (F4)
Sets the LG 3803-01 unit (OOB) to enable or disable.
• Freq. STD (F5)
Selects the reference signal.
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5.6.1 CONFIG
Figure 5-10 CONFIG screen
• TCP/IP (F1)
Sets the IP-Address, Subnet Mask and Default Gateway.
(Refer to Section 6.5.2)
• GPIB Adr. (F2)
Sets the GPIB Address. (Refer to Section 6.5.3)
5-10
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5.6.2 TCP/IP
Figure 5-11 TCP/IP screen
• Item Select (F5)
Selects the item that inputs the numeric value.
The values can be directly entered by using the numeric keypad.
Notes on TCP/IP setting
＊The setting conditions will be recalled when the power is turned on.
5-11
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5.6.3 GPIB ADDRESS
Figure 5-12 GPIB ADDRESS screen
• GPIB Adr. Up (F2)
Increments the GPIB ADDRESS within the acceptable range.
• GPIB Adr. Down (F4) Decrements the GPIB ADDRESS within the acceptable range.
The setting value can be directly entered by using the numeric keypad, or changed by
using the↑,↓,Up (F2) and Down (F4) keys.
Notes on GPIB ADDRESS setting
＊The setting conditions will be recalled when the power is turned on.
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5.6.4 PRESET GROUP
Figure 5-13 PRESET GROUP screen
• CF Access (F1)
Save the PRESET DATA to the memory card and load it from
the memory card. (Refer to Section 5.6.5)
• Group No. Up (F2)
5.6.5 CF ACCESS
Figure 5-14 CF ACCESS screen
Status
The operation status of SAVE/LOAD to the memory card is
displayed.
• Preset to CF (F1)
Save the PRESET DATA to the memory card.
• CF to Preset (F2)
Load the PRESET DATA from the memory card to internal
memory.
5.7 Internal Settings
5.7.1 Setting Calendar
Change to the super user, then login with telnet. The ID and password are lg3803.
(Lowercase letters can only be used.)
data Enter month, date, hour, minute, and second as follows.
Example to set 2005/1/31 14:00:28
su (enter)
root (enter)
/work/script/hwdate 013114002005.28 (enter)
hwclock -- systohc -- localtime (enter)
5-14
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6. PRESET, GROUP
6.1 Preset
Up to 100 setting conditions can be stored and recalled by using the front panel key.
• Storing Data
(1) Set the CODING, CHANNEL, LEVEL, etc.
(2) Press the ADDRESS key. The PRESET number LED brinks.
(3) Specify the address to store data by pressing the ↑ or ↓ key in the PRESET
column, or enter address by using the numeric keypad.
(4) When the address is directly set by using the numeric keypad, press the ENTER
key.
(5) Pressing the STORE key stores data.
There are two methods to recall the setting conditions:
• Direct recall
To recall the desired memory number, press the ↑ or ↓ key in the PRESET group.
• Specifying address
(1) Press the ADDRESS key. The PRESET number indicator LED brinks.
(2) Specify the address to store data by pressing the ↑ or ↓ key in the PRESET
column, or enter address by using the numeric keypad.
(3) Press the ENTER key to enter data.
(4) Pressing the RECALL key recalls data.
6.2 GROUP
Up to ten groups can be set. Preset data can easily be used by incrementing or
decrementing the preset range for each group.
• Setting group to be used
(1) Press the Pre. Group (F1) key on the UTILITY screen to enter group setting
screen.
(2) Press the Preset Group (F5) key to select the desired group number.
• Setting preset range
(1) Select the group number on the group setting screen.
(2) Press the No. Input (F2) key to enter preset number setting screen, then set the
Begin and End numbers.
＊The End number must be larger than the Begin number.
• Recalling preset data
(1) Press the ↑ or ↓ key, or the numeric keypad to specify the number to recall
data. Refer to Section 4.5.
＊Use the preset number within the specified range in the group being set.
Otherwise, the preset number is canceled.
6-1
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7. REMOTE CONTROL
This instrument can be remotely controlled (e.g., increments or decrements preset data) via
the REMOTE CONTROL connector.
(1) Major Function
(2) Connector
(3) Input Level
(4) Input Logic
Increment, decrement, returning group top
57LE-40240-7700 (DDK Ltd.) or equivalent
TTL (Pull up to +3.3 V)
Negative logic
(5) Output Level
(6) Fan Out
TTL (GO/NO-GO), open collector (Alarm)
1 each
(7) Output Voltage
(8) Output Logic
(9) Pin Assignments
+12 V (Alarm)
Positive logic/negative logic (GO/NO-GO), negative logic (Alarm)
See Table 7-1
Table 7-1 Pin assignments
No.
1
Name
INC
Input/Output
Input
No.
13
14
15
16
17
18
19
20
21
22
23
24
Name
Input/Output
Output
GO (Positive logic)
2
DEC
Input
GO (Negative logic)
Output
3
RETURN
Reserve
Reserve
Reserve
Reserve
Reserve
N. C.
Input
NO-GO (Positive logic)
Output
4
NO-GO (Negative logic)
Output
5
Alarm
N. C.
N. C.
N. C.
N. C.
N. C.
GND
GND
Output
6
7
8
9
10
11
12
N. C.
GND
GND
GND
GND
GND
GND
＊About REMOTE CONTROL connector
• Do not apply external voltage to the output pins except Alarm pin.
• All pins are pulled up to +3.3 V. When externally control this instrument, do not apply
voltage exceeding +5.0 V or negative voltages.
＊Recalling preset conditions via the REMOTE CONTROL connector
• The preset conditions between the Begin and End address can be recalled by using
the INC/DEC pins. The INC, DEC, and RETURN pins are Low active. Assert for at
least one second.
• After setting is performed, wait for at least one second for the next setting.
＊GO/NO-GO output pins
• Outputs TTL High or Low for GO/NO-GO judgement.
＊Alarm output pin
• Outputs OR of three types of alarms displayed on the top screen in negative logic.
Since the open collector output is used, pull up the circuit for connection.
＊Operation while using GPIB and Ethernet
• The REMOTE CONTROL connector is enabled even when operating the instrument
via the GPIB (in remote control mode) and Ethernet. When the REMOTE CONTROL
connector is not used, disconnect any equipment from the connector.
7-1
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8. GPIB
Since this instrument provides the GPIB (IEEE 488) connector as standard, major functions
can be remotely controlled via the GPIB interface.
Note
The GPIB capability of this instrument is confirmed by using the GPIB board (PCI-GPIB,
PCMCIA-GPIB) manufactured by National Instruments Corporation (NI). If other than
the board mentioned above is used, operation may differ from the instructions in this
manual. Therefore, the board mentioned above should be used when controlling this
instrument.
8.1 Specifications
Standard
LSI Used
Code
Conforms to ANSI/IEEE Std 488.1-1978
TMS9914A or equivalent
ASCII
8.2 Interface Function
Table 8-1 Interface function
Function
Source Handshake
Acceptor Handshake
Talker
Subset
SH1
AH1
T8
Description
All functions
All functions
Basic talker function, canceling talker
specified by listener
Listener
L4
Basic listener function, canceling listener
specified by MTA
Service Request
Remote/Local
Parallel Poll
Device clear
Device trigger
Control
SR0
RL2
PP0
DC1
DT0
C0
No function
No LLO function
No function
All function
No function
No function
E1
Open collector driver is used.
State driver is used for EOI and DAV,
however.
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8.3 Interface Message Function
Table 8-2 Interface message and ASCII code
Upper
4 bits
0
1
2
3
4
5
6
7
Lower
4 bits
ASC MSG ASC MSG ASC MSG ASC MSG ASC MSG ASC MSG ASC MSG ASC MSG
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
NUL
SPC
0
1
2
3
4
5
6
7
8
9
:
@
A
B
C
D
E
F
G
H
I
P
Q
R
S
T
U
V
W
X
Y
Z
[
`
a
b
c
d
e
f
p
q
r
GTL
SDC
!
"
#
$
%
&
'
s
t
DCL
u
v
w
x
y
z
{
g
h
i
(
)
LF
*
J
j
+
,
;
K
L
k
l
<
=
>
?
¥
|
CR
-
M
N
O
]
m
n
o
}
.
^
~
/
UNL
_
UNT
Talk address
Listen address
Universal command group
Address command group
8.4 GPIB Address
Settable Range
1 to 30
Setting Procedure
(Refer to Section 5.6.3)
8-2
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8.5 Clear, Reset
The Clear and Reset modes can be controlled by using the commands.
The followings describe the reply for the clear and reset operations.
(1) IFC (Interface clear)
Reply of the universal command (IFC) is listed below.
• Cancels specified talker and listener.
• GPIB buffer and waiting command remain as is.
• Remote control conditions remain as is.
• Front panel control settings remain as is.
(2) DCL, SDC (Device clear)
Reply of the universal command (DCL) and address command (SDC) are listed below.
• Clears the GPIB buffer and waiting command.
• Interface conditions (specified talker and listener conditions) is remained.
• Enables the remote control mode.
• Front panel control settings remain as is.
(3) Returning power on
When the power is turned on again, the following operation is performed.
• Cancels specified talker and listener.
• Clears the GPIB buffer and waiting command.
• Enables the local control mode.
• Displays the top screen regardless of the display before turning power off.
8.6 REMOTE/LOCAL
The remote or local control mode can be selected by using the system controller and
REMOTE key. Either remote or local control mode is always selected. Each status is
described below.
(1) Local control mode
The local control mode is selected under the following conditions:
(a) Power is turned on. (Immediately after the instrument starts.)
(b) The REMOTE LED is turned off by pressing the REMOTE key.
(c) When GTL command is received.
(d) Remote control mode is canceled.
(2) Remote control mode
The remote control mode is enabled when the REN is in the truth state and this
instrument is set to the listener. The REMOTE LED lights. In remote control
mode, all front panel keys except the POWER switch and REMOTE key are
disabled.
The instrument can be controlled via the ETHER connector. The REMOTE
CONTROL connector can also be used to control this instrument. When the GPIB
capability is enabled, do not connect the equipment (e.g., personal computer) to
the ETHER or REMOTE CONTROL connector.
8-3
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8.7 Multiline Message Command
Table 8-3 lists the multiline message command types and a reply to each command.
Table 8-3 Reply of multiline message command
Type
Name
DCL
SPE
SPD
PPU
Description
Reply
Yes
No
Clearing GPIB buffer
Setting serial polling to State
Clearing serial polling
Universal
Command
No
Clearing parallel polling
No
LLO
(3) Program message unit separator
Use a semicolon ";" (3Bh in ASCII code) when transfers multiple messages
simultaneously.
(4) Program data separator
Use a comma "," (2Ch in ASCII code) to delimit multiple parameters.
8.11 Program Code List
Table 8-4 Setting code list
Header
SY
Data
Description
Selecting modulation mode
Selecting TS input
Type of TS input, or ROM video pattern
ROM screen size
ROM sound pattern
Unit
1
2
n
n
p
q
r
0 to 2
0 to 5
0 to 2
0 to 3
0 to 2
0 to 1
0.0 to 30.0
TS
3
4
5
6
7
8
9
CO
CN
CU
CD
CL
BO
BU
BL
n
i
CN on (1), off (0)
Setting C/N value
dB
CN value UP
CN value DOWN
Selecting digit of the C/N value to be set
Setting BER measurement on (1), off (0)
n
n
ne
ne
p
0 to 2
0 to 1
0.00E-0 to 9.99E-1 Setting upper limit of BER threshold value
0.00E-0 to 9.99E-1 Setting lower limit of BER threshold value
0.1 to 3600.0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
BI
Setting BER measurement interval
Setting channel
Setting RF frequency
0.1 sec
CH
CH
RF
FU
FD
DF
LM
DU
DD
DL
CK
ST
RC
RU
RD
RR
GR
n
i
50.000 to 900.000
MHz
Frequency UP
Frequency DOWN
Selecting digit of the frequency to be set
Setting output level
n
i
0 to 5
-100.0 to 13.0
dBm
Output level UP
Output level DOWN
n
n
n
n
0 to 2
0 to 1
0 to 99
0 to 99
Selecting digit of the output to be set
Selecting reference signal
Setting address to store data
Setting address to recall data
Address increment
Address decrement
Returning to begin address
Selecting group
Setting begin and end addresses in each
group
Setting begin address
Setting end address
Setting modulation on (1), off (0)
n
n
0 to 9
0 to 9
28
29
GS
p
q
n
0 to 98
1 to 99
0 to 1
CW
8-5
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Table 8-5 Query code list
Header
SY
TS
Data
Description
Reading modulation mode selected
Reply
1
2
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
n
Reading signal selected to TS input
n, p, q, r
3
CO
CN
CL
Reading setting status of CN on (1), off (0)
Reading setting status of C/N value
n
4
i
5
Reading setting status of step to be set
Reading setting status of BER measurement on (1), off (0)
Reading BER value
n
6
BO
BR
BJ
n
7
ne
ne, n
ne
ne
n, p
n
8
Reading judgement results
9
BU
BL
Reading setting status of upper limit for BER threshold value
Reading setting status of lower limit for BER threshold value
Reading setting status of BER measurement interval
Reading setting status of channel
10
11
12
13
14
15
16
17
18
19
BI
CH
RF
DF
LM
DL
Reading setting status of RF frequency
Reading setting status of digit to be set
Reading setting status of output level
Reading setting status of digit to be set
Reading selection status of reference signal
Reading selection status of group
i
n
i
n
CK
GR
GS
n
n
n
Reading setting status of begin and end addresses in each
group
n, p
20
CW
?
Reading setting status of modulation
n
Refer to each Option instruction manual for specified program code of option.
8-6
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8.12 Detail Program Code
This section describes the detail program codes listed in Section 8.11.
Definition:
n, p, q, r, s
0 and natural number
i
Integer including decimal point
Real number including exponential number
Space (20h in ASCII code)
ne
_
• Terminator is omitted for a syntax. Add the terminator at the end of the code (refer to
Section 8.9).
• Header is not added for reply; the reply code consists of data only.
(1) Selecting modulation mode..................."SY"
Function
Syntax
Selecting and querying modulation mode.
SY_n
SY_?
(Setting, reply)
(Query)
n
0
1
2
Modulation Mode Selection
8VSB
64QAM
256QAM
(2) Selecting TS input................................."TS"
Function
Syntax
TS_?
Selecting and querying TS for channel coding.
TS_n (, p, q, r) (Setting, reply)
(Query)
＊In this program code, the amount of consequent data depends on "n" selected.
n
0
1
2
3
4
5
TS Input Selection
PN
External ASI
External SPI
Internal (OP70)
Reserve (Not used)
ROM
＊"3" is only enabled when the Moving Picture Option (OP70) is installed.
For external ASI or external SPI
p
0
1
TS Type Selection
MPEG-2 TS
Reserve (Not used)
8-7
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For Internal (OP70 installed. Reply only; no setting is required.)
p
0
1
Drive Used
HDD
DVD
For ROM
p
0
1
2
Pattern Selection
Color Bar
Ramp
Monoscope
q
0
1
2
3
Screen Size Selection
1920 x 1080i (16:9)
1280 x 720p (16:9)
704 x 480i (16:9)
704 x 480i (4:3)
r
Sound Pattern
0
1
2
L: 1 kHz, R: 400 Hz
L, R: 1 kHz
L, R: 400 Hz
(1) For PN
TS_0
(PN)
(2) For ASI, SPI
(3) For ROM
(4) For Internal
TS_1, 0
(ASI, MPEG-2 TS)
(Ramp, 1920x1080i, 400 Hz)
TS_5, 1, 0, 2
TS_3 (At setting)
Reply for TS_?
3, 0
＊Setting of "n" and following data are ignored when they are not matched.
＊When playing back TS from HDD or DVD, setting the TS command forcibly stops
playback operation.
8-8
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(3) Setting C/N on/off..............................."CO"
Function
Syntax
Setting and querying C/N set in Step (4) on/off.
CO_n
CO_?
(Setting, reply)
(Query)
n
0
1
C/N On/Off
Off
On
(4) Setting and querying C/N value.........."CN"
Function
Syntax
Setting and querying C/N value added.
CN_i
(Setting, reply)
(Query)
CN_?
i
C/N value: 0 to 31.0 (dB)
Effective down to one digit after the decimal point
(5) Incrementing C/N value......................"CU"
Function
Syntax
Incrementing C/N value in current steps.
CU (Setting)
(6) Decrementing C/N value ...................."CD"
Function
Syntax
Decrementing C/N value in current steps.
CD (Setting)
(7) Setting preset steps for C/N value......"CL"
Function
Syntax
Setting preset steps for incrementing and decrementing C/N value.
CL_n
CL_?
(Setting, reply)
(Query)
n
0
1
2
C/N Value Steps
0.1
1.0
10.0
(8) Setting BER measurement................."BO"
Function
Syntax
Setting and querying BER measurement.
BO_n
BO_?
(Setting, reply)
(Query)
n
0
1
BER Measurement
Off
On
＊Only when Source on the TS Source screen is set to PN, this program code is turned
on effectively and automatically.
8-9
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(9) Reading BER measurement value....."BR"
Function
Syntax
Reading BER measurement value.
ne
(Reply)
(Query)
BR_?
BER value ne: Replied in exponential format of 0.00E-0
＊This program code can only be used when the Source on the TS Source screen is set
to PN.
(10) Reading BER judgement results ........"BJ"
Function
Reading BER GO/NO-GO judgement results In accordance with
measurement value.
Syntax
ne_n
BJ_?
(Reply)
(Query)
BER value ne: Replied in exponential format of 0.00E-0
n
0
1
BER Measurement
NO-GO
GO
＊This program code can only be used when the Source on the TS Source screen is set
to PN.
(11) Setting upper limit of BER .................."BU"
Function
Syntax
Setting and querying upper limit for GO/NO-GO judgement.
BU_ne (Setting, reply)
BU_?
(Query)
BER upper value ne: Exponential format of 0.00E-0
＊This program code can only be used when the Source onSource screen
(13) Setting BER measurement interval ...."BI"
Function
Syntax
Setting and querying BER measurement interval.
BI_p
BI_?
(Setting, reply)
(Query)
BER measurement interval p: 0.1 to 3600.0 sec.
Effective down to one digit after the decimal point.
＊The value set in second is converted into the number of packets ; it cannot be set in
number of packets.
Notes on program code for (8) to (13)
When TS input is set other then the PN, both setting and querying operations are
disabled.
(14) Setting RF channel............................."CH"
Function
Syntax
Setting and querying RF channel (VHF, UHF, CATV).
CH_n
CH_?
(Setting, reply)
(Query)
n RF channel
n, STD
VHF, UHF, CATV channel
STD setting of USA CATV channel
IRC setting of USA CATV channel
HRC setting of USA CATV channel
n, IRC
n, HRC
＊This program code is ignored when querying channel set in frequency.
(15) Setting RF frequency.........................."RF"
Function
Syntax
Setting and querying RF frequency.
RF_i
(Setting, reply)
(Query)
RF_?
i RF frequency:
50.000 to 900.000 (MHz), effective down to three digits after
decimal point
＊This program code is ignored when querying channel set in channel.
(16) Incrementing frequency or channel...."FU"
Function
Incrementing frequency in current steps when RF is set in frequency.
Incrementing channel by one when RF is set in channel.
Syntax
FU
(Setting)
(17) Decrementing frequency or channel .."FD"
Function
Decrementing frequency in current steps when RF is set in frequency.
Decrementing channel by one when RF is set in channel.
FD (Setting)
Syntax
8-11
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(18)
Setting frequency in current steps "DF"
Function
Setting and querying increment/decrement of frequency in current
steps.
DF_n
DF_?
Syntax
(Setting, reply)
(Query)
n
0
1
2
3
4
Frequency Steps
0.001
0.01
0.1
1.0
10.0
＊This program code is ignored when frequency is set in channel.
(19) Setting output level............................."LM"
Function
Syntax
Setting and querying output level.
LM_i
(Setting, reply)
(Query)
LM_?
i Output level:
13.0 to -100.0 (dBm)
Effective down to one digit after the decimal point
(20) Incrementing output level ..................."DU"
Function
Syntax
Incrementing output level in current steps.
DU (Setting)
(21) Decrementing output level.................."DD"
Function
Syntax
Decrementing output level in current steps.
DD (Setting)
(22) Setting output level in current steps ..."DL"
Function
Setting and querying increment/decrement of output level in current
steps.
DL_n
DL_?
Syntax
(Setting, reply)
(Query)
n
0
1
2
Output Level Steps
0.1
1.0
10.0
8-12
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(23)
Selecting reference clock "CK"
Function
Syntax
Setting and querying reference clock.
CK_n
CK_?
(Setting, reply)
(Query)
n
0
1
Reference Clock
Internal
External input
(24) Writing preset memory ......................."ST"
Function
Syntax
Storing current setting conditions to specified number.
ST_n
(Setting)
n Preset number
0 to 99
(25) Reading preset memory....................."RC"
Function
Syntax
Reading preset values of specified number.
RC_n
(Setting)
n Preset number
0 to 99
(26) Incrementing preset number .............."RU"
Function
Syntax
Incrementing preset number.
RU (Setting)
(27) Decrementing preset number............."RD"
Function
Syntax
Decrementing preset number.
RD (Setting)
(28) Preset return......................................."RR"
Function
Syntax
Returning preset number to top.
RR (Setting)
(29) Selecting group .................................."GR"
Function
Syntax
Setting and querying group.
GR_n
GR_?
(Setting, reply)
(Query)
n
Group number
0 to 9
8-13
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(30)
Setting group
"GS"
Function
Syntax
Setting and querying group.
GS_n, p, q (Setting, reply)
GS_n_?
Group number
Begin address
End address
(Query)
n
p
q
0 to 9
0 to 98
1 to 99
＊The address numbers should be: begin address < end address.
(31) Setting modulation.............................."CW"
Function
Syntax
Setting and querying modulation.
CW_n
CW_?
(Setting, reply)
(Query)
n
0
1
Modulation
Modulation output
CW (carrier) output
8-14
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9. ETHERNET
9.1 Connection
When constructing the network system via the ETHER connector, use a STP cable
conforming to 100BASE-TX standards.
Use a straight cable when connecting the network via a hub. Use a cross cable when
connecting a personal computer.
Network manager should set the TCP/IP of this instrument according to your local network
environments.
9.2 Operating with Personal Computer
Use the TELNET when remotely controlling the LG 3803 by using a commuter. To startup
the TELNET, refer to the personal computer instruction manual.
＊Starting TELNET with the Windows 2000
① Select TELNET from the START menu.
② When IP address assigned to the LG 3803 is "192.168.0.1," enter "TELNET
192.168.0.1."
③ The LG 3803 and TELNET is now connected.
When TELNET is started, "login:" is displayed. Enter "lg3803."
When "Password" is displayed, enter "lg3803."
The login name and password cannot be changed.
Prefix "rem" to the command listed in Tables 8-4 and 8-5 for run the system. Attach "?"
after the command to read setting value.
Example 1: When setting the frequency to 500 MHz, output level to -60 dBm,
proceed as follows:
rem □RF □500 ENTER
rem □LM □-60 ENTER
＊ □is a space. Enter a space between header and data code.
Example 2: When reading the channel being set, proceed as follows:
rem □CH □ ? ENTER
＊Enter a space between header, data code, and "?."
Notes on using Ethernet
This instrument can be controlled via the Ethernet even when operating via the GPIB
interface, or REMOTE CONTROL mode is in operation. When Ethernet is only used,
disconnect other cables.
＊Windows is a registered trademark of Microsoft Corporation.
Operation of this instrument is confirmed by using Windows 2000 (SP2), however, the
system may operate incorrectly depending on the personal computer environments.
9-1
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10. MAINTENANCE
The LG 3803 is designed to operate stably under normal handling. If you have questions
regarding calibration and service, contact your local Leader agent.
■ Open Source
This instrument partially uses the open source distributed under the terms of the GNU General
Public License. (http://www.gnu.org/copyleft/gpl.html)
When the source code is required, contact your local Leader agent.
[ NOTE ]
1. We do not guarantee and support software distributed under the terms of the GNU
General Public License.
2. We are not responsible for modifying and distributing this program on your side.
3. You will be charged upon placing your order.
Jun. 3, 2005 05060.001K TS 1
10-1
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