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Adjustments Technical Manual LDK 20(S) - Studio Camera 4-53
Audio/Intercom LF Board
Cameraman intercom microphone
12.Apply a 1kHz test signal at -64dBu to the cam. intercom mic. input of Audio/Intercom LF Board (X19A-25).
13.Adjust the cam. mic. preset potentiometer for a 1kHz signal at -6dBu on the microphone output pin of the
board.
Measure at: Adjust with: Required result:
X19B-10 ZR310 -6dBu
Cameraman intercom microphone PL
14. Adjust the side tone potentiometer for a 1kHz signal at 0dBu on the telephone output pin.
Measure at: Adjust with: Required result:
X19B-13 ZR920 0dBu
Limiter level camera microphone
15.Apply a 1kHz test signal at -52dBu to the cam. intercom mic. input of Audio/Intercom LF Board (X19A-25).
16.Adjust the cam. mic. limiter level potentiometer for a 1kHz signal at 0dB the microphone output pin of the board.
Measure at: Adjust with: Required result:
X19B-10 ZR360 0dBu
Cameraman intercom microphone TRS
17.Apply a 1kHz test signal at -64dBu to the cam. intercom mic. input of Audio/Intercom LF Board (X19A-29).
18.Adjust the cam. mic. preset potentiometer for a 1kHz signal at -6dBu on the microphone output pin of the
board.
Measure at: Adjust with: Required result:
X19B-10 ZR330 -6dBu
Tracker intercom microphone
19.Apply a 1kHz test signal at -64dBu to the tracker intercom mic. input of Audio/Intercom LF board (X19A-13).
20. Adjust the tracker mic. preset potentiometer for a 1kHz signal at -6dBu on the mic. output pin of the board.
Measure at: Adjust with: Required result:
X19B-8 ZR410 -6dBu
Tracker intercom microphone PL
21.Adjust the tracker preset potentiometer for a 1kHz signal at 0dBu on the telephone cam. output pin.
Measure at: Adjust with: Required result:
X19B-16 ZR820 0dBu
Tracker intercom microphone PL (sidetone)
22.Adjust the tracker mic. sidetone level potentiometer for a 1kHz signal at 0dBu on the output pin of the board.
Measure at: Adjust with: Required result:
X19B-13 ZR910 0dBu
Limiter level tracker microphone
23.Apply a 1kHz test signal at -52dBu to the tracker intercom mic. input of Audio/Intercom LF board (X19A-13).
24.Adjust the tracker mic. limiter level potentiometer for a 1kHz signal at 0dB on the microphone output pin of
the board.
Measure at: Adjust with: Required result: Correct: Incorrect:
X19B-8 ZR460 0dBu
25.Switch off power. Return Audio/Intercom LF Board to its position in the camera.