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3-2-13. AGC adjustment (2)
Object
: Gray scale chart
Test Equipment : Waveform monitor
Test point
=: VIDEOOUT
Adjusting point : @RV208/PR-251 board
Specification
:A=100+2IRE
Adjustment procedure
2. Turn ON the Y switch on the rear panel.
Rv200@—
CL202@
R
'Z)
Rv204@ F200
PR-251 Board (B side)
XC-ST70/STSO/ST30
XC-ST70CE/STS50CE/ST30CE
3-2-14. MAX GAIN adjustment
Object
: Window pattern
Test Equipment : Oscilloscope
(AC 20 mV, 20 us/DIV),
Waveform monitor
Test point
: CL200/PR-251 board/Video out
Adjusting point : Lens diaphragm
@RV209/PR-251 board
Specification
:A=20+1mV
B=65+2IRE
Adjustment procedure
1.
Shoot the image of the window pattern fully in the
frame.
Turn OFF the Y switch on the real panel.
Observe the CL200 waveform by using the
oscilloscope and adjust the lens diaphragm so that the
CL200 video level becomes A.
Observe the waveform monitor and adjust @RV209 so
that the video level becomes B.
Rv200@)
RV203Q)
rv28e@ @
RV209
RY206
cL202@
Rv20a@ Gi200
PR-251 Board (B side)
3-11 (E)
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