Technicolor - Thomson LDK 20(S) Audio/Intercom LF Board RTS Mode, CH1 fork attenuation Prod

Audio/Intercom LF Board RTS MODE

Cameraman intercom microphone PL

1.Apply a 1kHz test signal at -64dBu to the cam. intercom mic. input of Audio/Intercom LF Board (X19A-25).

2.Adjust the cam. mic. preset potentiometer for a 1kHz signal at -10dBu on the microphone output pin of the board.

Measure at:

X19B-13

Adjust with:

ZR920

Required result:

-10dBu

Tracker intercom microphone PL

3.Apply a 1kHz test signal at -64dBu to the tracker intercom mic. input of Audio/Intercom LF board (X19A-13).

4.Adjust the tracker mic. sidetone potentiometer for a 1kHz signal at -10dBu on the mic. output pin of the board.

Measure at:

X19B-13

Adjust with:

ZR910

Required result:

-10dBu

CH1 fork attenuation PROD

5.Apply a 1kHz test signal at -6dBu to the prod intercom input of Audio/Intercom LF board (X19B-28).

6.Adjust the fork attenuation level potentiometer for a 1kHz signal <-22dBu at the output pin of the board.

Measure at:

X19B-8

Adjust with:

ZR990

Required result:

<-22dBu

Correct:Incorrect:

CH2 fork attenuation ENG

5.Apply a 1kHz test signal at -6dBu to the eng intercom input of Audio/Intercom LF board (X19B-30).

6.Adjust the fork attenuation level potentiometer for a 1kHz signal <-35dBu at the output pin of the board.

Measure at:

X19B-8

Adjust with:

ZR970

Required result:

<-35dBu

Correct:Incorrect:

22. Switch off power. Return Audio/Intercom LF Board to its position in the camera.

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-55