Sony Betacam SX DNW-A100 Maintenance Manual page 362

6-9. VPR-17 Board Replacement
3. Component Video Output (BETACAM) Level Adjustment
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Perform this adjustment for only DNW-A100/A50/A45.
Measuring equipment: Oscilloscope (Band width limit: ON)
(1) Connect the oscilloscope (and video monitor) as shown above figure.
(2) Set the oscilloscope's CH-1 as follows:
DC 100 mV/DIV, 10 µs/DIV
CH-1:
Trigger: CH-1
(3) To enter the maintenance mode, press S1101 (G-1) on the SS-63 board.
(4) Enter C2 : AUDIO/VIDEO CHECK.
(5) Enter C21 : VIDEO TEST SG.
(6) Video test signal choice
To display the test signal name "75% Color Bars" on the video monitor, turn the search dial slowly
while pressing the JOG button.
(7) To exit C21 : VIDEO TEST SG, press the MENU button once.
(8) To exit C2 : AUDIO/VIDEO CHECK, press the MENU button once again.
(9) Enter A2 : AUDIO/VIDEO ADJUST.
(10) Enter A20 : VPR VR.
(11) Confirmation (Adjustment)
Connect the oscilloscope's CH-1 to each of VIDEO OUTPUT COMPONENT R-Y and B-Y
connectors and confirm each output level.
If the specification is not satisfied, perform the adjustment.
Observation component
R-Y
B-Y
COMPONENT R-Y
A
6-124
DNW
VIDEO OUTPUT
COMPOSITE 3
Y
VIDEO OUTPUT
COMPONENT R-Y
B-Y
75 Z
Adjustment point (A20 : VPR VR)
B-CAM R-Y OUT LEVEL
B-CAM B-Y OUT LEVEL
COMPONENT B-Y
B
Video monitor
(terminated with 75 Z)
Oscilloscope
CH-1
BNC T adapter
Specification
A = 757 ±7 mV p-p
B = 757 ±7 mV p-p
DNW-A100/A50/A45
DNW-A100P/A50P/A45P