R/B Ad Gain Adjustment - Sony Digital Betacam DVW-707 Maintenance Manual

8-8. R/B AD Gain Adjustment

8-8. R/B AD Gain Adjustment
Notes
. This adjustment is needed only when the AD board or
the VA board is replaced. Do not make any attempt to
touch on this adjustment in any other cases.
. Never make any attempt to change the G AD gain data
during this adjustment.
Preparation
. Connect a waveform monitor to the TEST OUT and
vector monitor to the VIDEO OUT connectors respec-
tively.
. WHITE BAL switch (inside panel)
. On the setup menu, set as follows.
PAGE : S12*FUNCTION 1/2
ITEM : TEST SAW
ITEM : GAMMA
PAGE : S21*LEVEL 4
ITEM : KNEE
Adjustment Procedure
1. On the setup menu, adjust as follows.
PAGE : S54*AD ADJ.
ITEM : R AD GAIN
Spec. : Adjust the illuminated spot at the center
of the vector monitor.
M
G
R
Y
L
B
G
C
Y
(For NTSC)
2. On the setup menu, adjust as follows.
PAGE : S54*AD ADJ.
ITEM : B AD GAIN
Spec. : Adjust the illuminated spot at the center
of the vector monitor.
3. Repeat steps 1 and 2 several times, adjust the illumi-
nated spot at the center of the vector monitor.
8-10
PRST
ON
OFF
OFF
R
M
G
Y
L
B
G
C
Y
(For PAL)
4. Make sure that the carrier leakage at portion B is not
observed.
Setting After Adjustment
. On the setup menu, set as follows.
PAGE : S12*FUNCTION 1/2
ITEM : TEST SAW
ITEM : GAMMA
PAGE : S21*LEVEL 4
ITEM : KNEE
B
OFF
ON
ON
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1