LG 3803 Manuel d'utilisateur

LG 3803 8VSB/QAM SIGNAL GENERATOR INSTRUCTION MANUAL LEADER ELECTRONICS CORP.

1.2.5 Installation Do not use the instrument in the following environments. • High temperature environments Do not place the instrument under direct s

2. SPECIFICATIONS 2.1 Description The LG 3803 8VSB/QAM Signal Generator, conforms to 8VSB (digital terrestrial TV in USA System) and 64QAM/256QAM (CAT

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

(4) ASI, SPI Input Specifications Input Packet Format 188 bytes Applicable Stream MPEG-2 TS (ISO/IEC 13818-1) Input Data Rate 25 Mbps max. (5) FR

2.3.6 External Interface (1) Memory Card Interface Memory Card Compact flash card (CFA TYPE-I) Function Updating firmware, changing internal TS-ROM

3. PANEL DESCRIPTIONS 3.1 Front Panel ○18○14 ○13 ○11○4○3 ○21 ○2 ○6 ○9○8○10○12○5 ○16 ○17 ○15○19 ○20 ○7○1 Figure 3-1 LG 380

○7 MEMORY CARD slot Only used when the memory card contents are upgraded or updated. ○8 UP MENU key While displaying the setting screen, pressin

○16 RECALL key Recalls the setting conditions in the specified address. ○17 ↑, ↓ key Increments and decrements the specified address. ○18 UNIT

3.2 Rear Panel ○22 ○24 ○33○34○27 ○31○32○26 ○31 ○39 ○23 ○25 ○28 ○29 ○30○35○36○37 ○38Figure 3-2 LG 3803 rear panel ○22 FREQ

○31 Cooling fans (Two places) To prevent instrument damage due to overheating, do not block airflow through the ventilation holes. If the fan stop

TABLE OF CONTENTS GENERAL SAFETY SUMMARY ... I 1. INTRODUCT

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 th

8 BER result display Displays the Bit Error Rate (BER) measurement value and GO/NO-GO results based on the threshold values. 9 Interleave Displays

<<Alarm display on the top screen>> • The following alarm message is displayed on the top screen. Message is displayed in red. [FAN] In

<Setting screen example "CODING"> ○14 ○15 ○16 ○18 ○17 ○16 ○15 ○14 ○16 ○18 ○17 Figure 4-2

<Setting screen example "LEVEL"> ○19 ○19 ○20 Figure 4-3 Setting screen example (2) 19 Numeric value display column

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 d

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 use

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 i

(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 patt

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

5.4 LEVEL ... 5-6 5.5 BER...

5.3 CHANNEL Figure 5-5 Channel or Frequency setting screen • Country (F1) Selects the channel tables of USA or KOREA. • Up (F2)

5.4 LEVEL Figure 5-6 Level setting • Up (F2) Increments the level value by preset step size within the acceptable range. • Step S

5.5 BER Figure 5-7 BER setting and measurement • BER Setup (F1) Sets the BER measurement conditions. Refer to Section 5.5.1. •

5.5.1 BER SETUP Figure 5-8 BER SETUP screen • Interface (F2) Selects the TS input for BER measurement. Parallel Use the SPI connect

5.6 UTILITY Figure 5-9 Utility screen Software Version Displays the control software version. Provide the serial number indicated o

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) •

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 e

5.6.3 GPIB ADDRESS Figure 5-12 GPIB ADDRESS screen • GPIB Adr. Up (F2) Increments the GPIB ADDRESS within the acceptable range. • G

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 me

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 C

GENERAL SAFETY SUMMARY To Avoid Personal Injury It is recommended that only qualified personnel with technical knowledge use this instrument only af

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,

7. REMOTE CONTROL This instrument can be remotely controlled (e.g., increments or decrements preset data) via the REMOTE CONTROL connector. (1) Major

8. GPIB Since this instrument provides the GPIB (IEEE 488) connector as standard, major functions can be remotely controlled via the GPIB interface.

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 A

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 operatio

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

(3) Program message unit separator Use a semicolon ";" (3Bh in ASCII code) when transfers multiple messages simultaneously. (4) Program dat

Table 8-5 Query code list Header Data Description Reply 1 SY ? Reading modulation mode selected n 2 TS ? Reading signal selected to TS

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 I

For Internal (OP70 installed. Reply only; no setting is required.) p Drive Used 0 HDD 1 DVD For ROM p Pattern Selection 0 Color Bar 1 Ramp 2 Monos

GENERAL SAFETY SUMMARY Review the following safety precautions to avoid operator's injury and loss of life and prevent damage and deterioration t

(3) Setting C/N on/off ..."CO" Function Setting and querying C/N set in Step (4) on/off. Syntax CO_n (Setting,

(9) Reading BER measurement value ..."BR" Function Reading BER measurement value. Syntax ne (Reply) BR_? (Query) BER value ne: Repli

(13) Setting BER measurement interval ..."BI" Function Setting and querying BER measurement interval. Syntax BI_p (Setting, reply) BI_? (

(18) Setting frequency in current steps "DF" Function Setting and querying increment/decrement of frequency in current steps. Syntax DF_n

(23) Selecting reference clock "CK" Function Setting and querying reference clock. Syntax CK_n (Setting, reply) CK_? (Query) n Reference

(30) Setting group "GS" Function Setting and querying group. Syntax GS_n, p, q (Setting, reply) GS_n_? (Query) n Group number 0 to 9 p

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 str

10. MAINTENANCE The LG 3803 is designed to operate stably under normal handling. If you have questions regarding calibration and service, contact you

GENERAL SAFETY SUMMARY WARNING Warning on Installation Environments ● About the Guaranteed Operating Temperature Range Operate the instrument bet

GENERAL SAFETY SUMMARY CAUTION Caution on Input/Output Terminals Input Terminals are rated with a maximum input. Do not supply an input over the

1. INTRODUCTION Thank you for purchasing Leader’s measuring instruments. Please read this instruction manual carefully to ensure correct and safe oper

CAUTION 1.2.2 Maximum Input Voltage There is restriction when applying input signals. Applying excessive voltage to the connector may result instru