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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:
Adjust with:
X19A-35
ZR110
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:
Adjust with:
X19A-35
ZR160
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:
Adjust with:
X19A-33
ZR210
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:
Adjust with:
X19A-33
ZR260
Adjustments
Required result:
-12dBu
Required result:
0dBu
Required result:
-12dBu
Required result:
0dBu
Technical Manual LDK 20(S) - Studio Camera
4-51
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