8-14 DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1
8-12. Gamma Correction Adjustment
Preparation
.Lens IRIS →MAN
.OUTPUT/DCC switch (inside panel) → CAM/ON
.Shoot a grayscale chart in the full underscanned monitor
frame.
Equipment : Waveform monitor
Test point : TEST OUT connector
Setting point : 1Lens IRIS
Spec. : A (white level) = 100 ±2 IRE (NTSC)
A (white level) = 700 ±14 mV (PAL)
.On the setup menu, set as follows.
PAGE : S24*LEVEL 7
ITEM : TEST OUT → G
Adjustment Procedure
Equipment : Waveform/Vector monitor
Test point :TEST OUT connector
1. On the setup menu, adjust as follows.
PAGE : S21*LEVEL 4
ITEM : MASTER GAMMA
Spec. :B = 63 ±2 IRE (NTSC)
B = 420 ±14 mV (PAL)
2. On the setup menu, set as follows.
PAGE : S12*FUNCTION 1/2
ITEM : TEST OUT → ENC
ITEM : TEST SAW → ON
8-12. Gamma Correction Adjustment
3. On the setup menu, adjust as follows.
PAGE : S25*LEVEL 8
ITEM : R GAMMA
Spec. :Position the illuminated spot at the center
of the vector monitor.
4. On the setup menu, adjust as follows.
PAGE : S25*LEVEL 8
ITEM : B GAMMA
Spec. :Position the illuminated spot at the center
of the vector monitor.
5. Repeat steps 3 and 4 several times, position the
illuminated spot at the center of the vector monitor.
6. Make sure that the carrier leakage at the portion B is
not observed.
Setting After Adjustment
.On the setup menu, set as follows.
PAGE : S12*FUNCTION 1/2
ITEM : TEST SAW → OFF
RM
G
C
Y
G
Y
L
B
B
A
B