Sony Digital betacam DVW-707, Руководство по обслуживанию, Страница: 300 / 314

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 :
1
Lens 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
R
M
G
C
Y
G
Y
L
B
B
A
B