2-6 (E)
CA-702
CA-702P
2-3-3. Video Gain Adjustment
Preparation
1.
Connect each equipment referring to 2-1-3, “Connection - Video Adjustment.”
2.
Set the power switch of CA to OFF and extend the DIF-67 board.
3.
Extend connectors CN3 (red) and CN4 (green) on the DIF-67 board. (Refer to 1-10-2, “Extending PC
Board”.)
4.
Warm up for approximately ten minutes in the procedures below before performing the adjustment.
(1) Set the SDI/COMPOSITE switch on the outside panel of CA to COMPOSITE.
(2) Set the power switch of CA to INPUT and the power switch of a camcorder to ON.
(3) Warm up for approximately ten minutes.
5.
Video signal generator
8
75% color-bar signal (setup 7.5%)
Adjustment
1.
Measure video level A of a video signal generator.
Measurement equipment: Waveform/Vector monitor
Setting: DISPLAY
8
WFM
SWEEPS
8
2H
Measurement point:
Video signal generator output
2.
Switch the inputs of a waveform monitor and vector monitor and measure video level B of a VIDEO/
SDI OUT connector.
Measurement equipment: Waveform/vector monitor
Setting: DISPLAY
8
WFM
SWEEPS
8
2H
Measurement point:
VIDEO/SDI OUT connector
Adjustment point:
1
RV3(VIDEO GAIN)/DIF-67 board
Specifications:
NTSC
PAL
B = A
±
1 IRE
B = A
±
1 mV (for PAL)
2-3. DIF-67 Board Adjustment
2-3-3. Video Gain Adjustment
B = A
±
1 IRE
B = A
±
1 mV
(NTSC Setup 7.5%)
(PAL)
CN1
D2
D3
E1
E2
RV3
RV1
RV2
TP1
TP2
TP3
TP4
TP102
D
E
F
G
DIF-67 BOARD (A SIDE)
