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SERVICE MANUAL

1. Input signal Composite No Item ee Test point Adjust Procedure Waveform Genlock signal Equipment O SD STO GOIGRDHIS Verify that INPUT ani None and GENLOCK Genlock LED goes to p BB LED on the front lit GMonitor are lit Input external reference signal 75 color bars to1765 While N FA 145 is Free running Nene MONITOR VR18 free running frequency None OUT R5 adjust signal 21765 rotation speed to 2 minimum 5 rotations per Sec or less 075 color bars N Input BB and Genlock NONE MONITOR verify that the signal is locked 1765 4 2 Video Input Output Adjustment Input signal Composite No ltem signal Test point Adjust Procedure Waveform Genlock signal Equipment Verify that None SDI OUT1and 0 7Vp p SDI 275 color bars Sn SDI OUT are 0 525Vp p input output BB 12 both set to yi p WEFM601 i Y 700mV B Y R Y 525mV None Verify that the SDI input 275 color bars MONITOR VR19 output signal of composite GBB OUT T5 MONITOR OUT output level is set to 714mV 1765 3 Set SW1 7 B amp W to ON adjust so that 4 2MHz and WHITE 4 2 2 SDI input ONone MONITOR OUT te 75 multiburst MONITOR VC3 have the same ISOLERET BB OUT 75 amplitude levels response 1765 within 2 596 After the adjustment set SW1 7 back to OFF Verify that 075 color bars SDI OUT1and 7Vp rae 0919 No
2. 2 X INNOVATIONS IN VIDEO and AUDIO TECHNOLOGY TIME BASE CORRECTOR 145 1 EDITION FOR A COMPANY LIMITED Contents 6 Circuit Diagram 7 Parts List T Prior to sitter E eae Coe E e ER HR Rc 1 1 1 2 Test Equipment iure det er mese vases 1 2 Test Equipment Connection 43 2er ee see ae dne eee RR da 2 3 Betore Adjustment drei aaa 3 4 Adjustments Alilgnments griipi ha dere 4 4 1 Genlock Adjustrmient uci iini rm teen e bres 4 4 2 Video Input Output 5 4 3 Final Check UNITY Settings sesssssssssssssseseeeeneene nennen enne 7 4 4 MAIN CARD Settings 342 ea 8 5 Block Diagram au dada 10 1 Prior to Starting 1 1 General This service manual is intended for use only by qualified service engineers who are familiar with FOR A products Maintenance procedures and or adjustments explained herein should not be attempted by unqualified personnel 1 2 Test Equipment FA 145 units should be configured as shown in sec 2 Test Equipment Connection prior to performing adjustments using the test equipment listed below Or equipment having equivalent or better capability Equipment Type 1 Composite monitor For analog signal 2 SDI monitor For digit
3. ENLOCK THRU MONITOR OUT 1 2 short 2 3 short 1 2 short GENLOCK THRU JP3 T4 Sets GENLOCK 75Q terminated No termination 75Q terminated termination 1 2 short open 1 2 short JP4 C2 Adjusts input Default Variable Default signal sync 1 2 short 2 3 short 1 2 short Switches and volumes on the front panel Toggle switch UNITY VIDEO LEVEL Center PROCESS CONTROL CHROMA LEVEL Center SETUP BLACK Center CHROMA PHASE Center H PHASE Toggle switch Center INPUT SELECT COMPOSITE D1 COMPOSITE FREEZE ON OFF OFF 5 Block Diagram Mother Board Process Control PLD CONFIG CPU RS422 485 3052 Monitor OUT A D D A ADC10030 PLD PLD PLD CXD1171 Y C Decode Encode Separation Composite IN Memory Memory SDI DETECT Control Control Selector Selector P S GS7032 H lock circuit BB lock circuit SD SDI IN EQ GS7025 S P GS9020 Genlock IN GENLOCK H lock circuit 10
4. al signal SD SDI 3 Black Burst signal Reference signal The signal generator should be directly connected to 4 Test signal generator the unit without using an amplifier Composite NTSC PAL D1 NTSC PAL 5 Oscilloscope 100MHz or higher Waveform monitor P Tektronix 1193 Waveform monitor y Tektronix MEMOD 2 Test Equipment Connection A connection example of FA 145 for alignment and adjustment is given below AC 100V 240V x xx x 7 X Pr 2 x prises SD SDI pue ouis ENON x So 2 O 3 F 7 oc Signal COMPOSITE Generator BNC Cable SDI Monitor Composite Monitor 3 Before Adjustment Dipswitch and jumper operational settings are made at the factory and should not need to be changed during normal operation If changes have to be made during the course of these adjustments refer to the figure below and sec 4 4 MAIN CARD Settings to remake original settings JP1 Open JP2 1 2 short JP3 1 2 short JP4 1 2 short swi 1 8 All OFF SW2 1 8 All OFF MAIN CARD Short settings The all dipswitches SW1 2 are set to OFF positions 4 Adjustments Alignments IMPORTANT Warm up your unit for at least 30 minutes before making following adjustments When performing following adjustments all switches on the front panel should be set to UNITY 4 1 Genlock Adjustment
5. cal as input BB shown in the 1765 figure at right 10 None Verify that the Y C Delay Bowtie SDI signal is SD_SDI NTSC PAL OUT symmetrical as input BB 1 2 shown in the WEMe01 figure at right Adjust the front volume to make the UNITY and OPERATE settings VIDEO 075 color bars EPIO A NTSC PAL UNITY LEVEL SET OPERATE None MONITOR Front UP CHROMA BB OUT Volume PHASE consistent while 01765 switching UNITY and OPERATE by the toggle switch on the front panel 4 4 MAIN CARD Settings Jumper and dipswitch settings on the Main card are factory made as below They should not need to be changed Simply verify settings are as shown Dipswitch SW1 card address H1 Setti 1 FACTORY SET m OFF 2 TEST SIGNAL SEHE OFF OFF 3 FREEZE MODE SELECT Field Frame OFF 4 FIELD SELECT EVEN ODD OFF 5 AUTO FREEZE ON OFF OFF 6 FORCED FIELD ON OFF OFF 7 B W ON OFF OFF 8 VITS ON OFF OFF Dipswitch SW2 card address J1 Setti Pin No Function zu FF REMOTE REMOTE SET UP ON OFF SYNCHRO MODE LINE OFF EDH ON REF SEL MODE MANUAL REF SEL REAR BNC SYSTEM NTSC PAL GENLOCK INPUT ADJUSTMENT ADJUST OPERATE OFF CO 2j 0 m Jumper Settings JP Card Settings N Function O Address Setting 1 Setting 2 Factory Default JP1 B6 Resets CPU jpo ects MONITOR MONITOR OUT G
6. dare HVCO BB OUT D3 chroma phase e again so that the 01765 vectors located in each 4 box FH mark Connect TP3 trigger to CH1 and TP8 to CH2 of oscilloscope to observe TP8 DC2 0V 8 VTR None F2 D1 signal with V rate HVCO BB TP8 VR11 Use VR9and Mae D1 D1 SB Oscilloscope VR11 to adjust the 0 5Vp p waveform of TP8 as shown in the figure at right Zoom to enlarge image around where the B B In color bars f ianal Toggle falls AlignH gt H None MONITOR Switch ds 9 phase BB OUT SW4 phase UE D3 Eom ie Monitor Out Oscilloscope the front panel Set HD of reference signal as a trigger 4 3 Final Check UNITY Settings The settings bellow should be verified on both NTSC and PAL signals Input signal Composite No Item Test point Adjust Procedure Waveform nee signal Equipment 175 color bars Verify that the Same level as input signal NTSC PAL output signal of MONITOR MONITOR OUT None OUT has the same BB amplitude level within 1 as 1765 the input signal Level Verify that the output signals DNone of both seg Q75 color bars SDI SDI OUT1 and JN p p 0 525Vp p NTSC PAL OUT SDI OUT2 12 have the same uiu BB i amplitude WFM601 levels within 1 as the input signal D2T pulse Y C Dela IS a I None MONITOR 9 Composite OUT symmetri
7. ne our VR5 SDI_OUT2 are 97 0 525Vp p SDI output GBB 1 5 D3 both set to level Y 700mV WFM601 B Y R Y 525mV o Verify that the Composite Dyes colon Date output signal of input None MONITOR VR6 MONITOR OUT comporte i GBB OUT F2 Sor to DE output leve not use O P 1765 adjust 4 Composite 075 multiburst Verify that input ON SDI one SDI OUT1and SDI output OUT SDI OUT are frequency GBB 1 2 both flat response DWFM601 Verify that UNE 75 multiburst 4 2MHz and WHITE 4 2 2 composite None MONITOR MONITOR OUT ner BB OUT have the same 1785 oy Adjust so that 75 color bars RR of SC lock None TP26 VR20 minimized as a 5 og GBB F4 D3 straight line 7 Set VD of input Oscilloscope signal as a trigger Minput signal Composite No Item o Test point Adjust Procedure Waveform Genlock signal Equipment Set SW2 8 to ON Adjust the toggle Dipswitch he e SWA so SW2 8 Be D3 chrominance SDI vectors are 075 color bars OUT Toggle located in each 6 Chroma None 1 2 EA 4 box FH mark phase BB D3 After the adjustment set WFM601 SW2 8 back to OFF If there is chroma VR10 jitter adjust jitter to D1 minimum using VR10 If jitter level is high use VR20 to 75 multiburst adjust jitter to minimum In that 7 jitter None MONITOR VR20 case adjust the gom

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