THOMSON LDK 200, Technical Manual

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Adjustments Technical Manual LDK 200 - Camera Head 4-9
Video Monitoring Adjustment
Set-up
1. Switch off power. Place sync. monitoring board on service extender. Switch on power.
2. Switch on colour bar.
Viewfinder output level
3. Connect oscilloscope terminated with 75 Ohm to the VF output on the back panel.
4. Adjust the potentiometer on the sync. monitoring board to obtain the correct output amplitude VF output
signal.
Measure at: Adjust with: Required result: Correct:
VF output ZR42 PAL 700mV
0%
10
90
100
0.2V
10µS
VB+700mV
NTSC 714mV
(100IRE)
5. Switch off power. Return sync. monitoring board to its position in the camera.