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Leader 3803 Instruction Manual

Manual is about: 8VSB/QAM SIGNAL GENERATOR

Summary of 3803

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    Lg 3803 8vsb/qam signal generator instruction manual leader electronics corp..

  • Page 2: Table of Contents

    Table of contents general safety summary ............................................................................................. I 1. Introduction .............................................................................................................. 1-1 1.1 scope of warranty..............

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    5.4 level ..................................................................................................................... 5-6 5.5 ber ......................................................................................................................... 5-7 5.5.1 setup..........................

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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 manufacture...

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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 ...

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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 c...

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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 instrumen...

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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 ...

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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 freq std 10 mhz input 2.5 vp-p sync, valid, clock, data ...

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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 temper...

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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 ...

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    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 resolution 1 khz, set in frequency channel usa, korea accuracy ±0.4 ...

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    (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) freq std input input connector bnc input impedance 50 Ω input level 0.8 vp-p input frequency 10 mhz (6) freq std output output connector bnc output impedance...

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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 10base-t or 100base-tx function setting this instrument, reading status (3) gpib specifications ansi/ieee std 488.1-1...

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    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 3803 front panel ○ 1 power switch push this switch in to apply power. Release this switch for turning power off. The setting conditions immediately befo...

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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...

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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 loca...

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    3.2 rear panel ○ 22 ○ 24 ○ 33 ○ 34 ○ 27 ○ 31 ○ 32 ○ 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 th...

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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 connect...

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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. T...

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    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 "- - -" when the carrier modulation is 8vsb. Displays the interleave length when the 64qam or 256qam is selected. 10 country displays the channel table: ...

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    > • 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. ...

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    ○ 14 ○ 15 ○ 16 ○ 18 ○ 17 ○ 16 ○ 15 ○ 14 ○ 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 indicate the setting parameter of this instrument or oob. 16 selection stat...

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    ○ 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 ...

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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 selects the broadcasting system and modulation mode. Selects the ts input sou...

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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 ...

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    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...

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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....

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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...

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    5.3 channel figure 5-5 channel or frequency setting screen • country (f1) selects the channel tables of usa or korea. • up (f2) increments the channel or frequency by preset step size within the acceptable range. • step size (f3) sets the steps for up and down operations. ( ＊ selectable only when fr...

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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) sets the steps for up and down operations. • down (f4) decrements the level value by preset step size within the acceptable range. The level can be directly enter...

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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) selects the steps for c/n or output level. • down (f4) dec...

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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...

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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 displays the rom pattern version. Installed unit displays the option installed. • config (f1) add...

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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 th...

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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) increments the group no. Within the acceptable range. • group no. Down (f4) decrements the group no. Within the a...

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    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 ca...

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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 p...

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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 increment, decrement, returning group top (2) connector 57le-40240-7700 (ddk ltd.) or equivalent (3) input level ttl (pull up to +3.3 v) (4) ...

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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 corporati...

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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 nul spc 0 @ p ` p 1 gtl ! 1 a q a q 2 " 2 b r b r 3 # 3 c s c s 4 sdc dcl $ 4 d t d t 5 % 5 e u e u 6 & 6 f v f v 7 ' ...

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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...

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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 description reply dcl clearing gpib buffer yes spe setting serial polling to state no spd clearing serial polling no ppu clearing para...

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    (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 data description unit 1...

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    Table 8-5 query code list header data description reply 1 sy ? Reading modulation mode selected n 2 ts ? Reading signal selected to ts input n, p, q, r 3 co ? Reading setting status of cn on (1), off (0) n 4 cn ? Reading setting status of c/n value i 5 cl ? Reading setting status of step to be set n...

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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 ne real number including exponential number _ space (20h in ascii code) • terminator is omitted for a syntax. Add the term...

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    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 monoscope q screen size selection 0 1920 x 1080i (16:9) 1 1280 x 720p (16:9) 2 704 x 480i (16:9) 3 704 x 480i (4:3) r sound pattern 0 l: 1 khz, r: 400 hz 1 l, ...

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    (3) setting c/n on/off ..............................."co" function setting and querying c/n set in step (4) on/off. Syntax co_n (setting, reply) co_? (query) n c/n on/off 0 off 1 on (4) setting and querying c/n value.........."cn" function setting and querying c/n value added. Syntax cn_i (setting,...

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    (9) reading ber measurement value ....."br" function reading ber measurement value. Syntax ne (reply) br_? (query) 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 .......

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    (13) setting ber measurement interval ...."bi" function setting and querying ber measurement interval. Syntax bi_p (setting, reply) bi_? (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 ...

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    (18) setting frequency in current steps "df" function setting and querying increment/decrement of frequency in current steps. Syntax df_n (setting, reply) df_? (query) n frequency steps 0 0.001 1 0.01 2 0.1 3 1.0 4 10.0 ＊ this program code is ignored when frequency is set in channel. (19) setting ou...

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    (23) selecting reference clock "ck" function setting and querying reference clock. Syntax ck_n (setting, reply) ck_? (query) n reference clock 0 internal 1 external input (24) writing preset memory ......................."st" function storing current setting conditions to specified number. Syntax st...

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    (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 begin address 0 to 98 q end address 1 to 99 ＊ the address numbers should be: begin address (31) setting modulation.............................."cw" function setting...

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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 thi...

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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...