(No.HC027)1-9SECTION 4ADJUSTMENT4.1 EQUIPMENT NECESSARY FOR ADJUSTMENT4.2 27MHz ADJUSTMENTWhen the CODEC Board is replaced, this adjustment is required.4.2.1 ConnectionConnect the JIG board, connecting cable, *1 and the frequency counter as shown in the figure below.• The GY-HD200/250 series supplies power only by the battery. And, after it charges it full, the battery is adjusted.• As for the GY-HM700 series, the supply from the DC power supply is possible.*1 NOTE:Please connect it so as not to damage 1 pin and 20 pins of CN24 on the CODEC board when the cable is connected while keepingthe connector parallel.4.2.2 Adjustment procedure(1) While pressing the [] button and the [INFO/CLR] button, press the [MENU] button to display the adjustment menu screen.(2) Select [AJUST] using the [ ] button.(3) Press the [ ] button.(4) Change the value using the [ ] or [ ] button to adjust the frequency of TP1 on the JIG board to the adjustment level.(5) Press the [ ] button to set the adjustment result.(6) Press and hold the [POWER] button for more than one second to turn the power OFF.Instrument Condition and part numberFrequency counter Readable in 8 or more digits, and must be calibrated. Constancy of 0.1ppm/1 x 10 -7 or moreat 0ºC to 40ºC.JIG board Part number: KSJ1705Connecting cable Part number: KS44291Battery (Recommended) U Model: Anton Bauer Dionic90E Model: IDX Endura-7SD card Minimum 16 MB or more㪢㪘㪄㪤㪩㪈㪇㪇㪞㪞㪥㪛㩷㪡㪠㪞㩷㪙㫆㪸㫉㪻 㪝㫉㪼㫈㫌㪼㫅㪺㫐㩷㪺㫆㫌㫅㫋㪼㫉㪫㪧㪈Measuring point TP1 on the JIG BoardAdjustment level 27MHz ± 15Hz (26.999985MHz to 27.000015MHz)䂓 --AJUST---> PLL128䂓PLL> ADJUST 13027䋮0000 129MHz > 128127126
