Technicolor - Thomson LDK 20(S) Audio 1 level, Audio 1 limiter, Audio 2 level, Audio 2 limiter

Audio/Intercom LF Board

Set-up

1.Set up camera in triax mode. Switch off power.

Place audio/intercom LF board on service extender. Switch on power.

Audio 1 level

2.Select an audio 1 level of -64dBu.

3.Apply a 1kHz test signal at -64dBu symmetrical to the audio 1 input of the camera

4.Adjust the audio preset potentiometer for a 1kHz signal at -12dBu on the audio 1 output pin.

Measure at:

X19A-35

Adjust with:

ZR110

Required result:

-12dBu

Audio 1 limiter

5.Apply a 1kHz test signal at -46dBu to the audio 1 input of the camera.

6.Adjust the limiter potentiometer for a 1kHz signal at 0dB on audio 1 output pin.

Measure at:

X19A-35

Adjust with:

ZR160

Required result:

0dBu

Audio 2 level

7.Select an audio 2 level of -64dBu.

8.Apply a 1kHz test signal at -64dBu symmetrical to the audio 2 input of the camera

9.Adjust the audio preset potentiometer for a 1kHz signal at -12dBu on the audio 2 output pin.

Measure at:

X19A-33

Adjust with:

ZR210

Required result:

-12dBu

Audio 2 limiter

10.Apply a 1kHz test signal at -46dBu to the audio 2 input of the camera.

11.Adjust the limiter potentiometer for a 1kHz signal at 0dB on audio 2 output pin.

Measure at:

X19A-33

Adjust with:

ZR260

Required result:

0dBu

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-51