Video E-E Level Adjustment (Vd-032 Board) - Sony DSR-25 Service Manual

DSR-25
6. Video E-E Level Adjustment
(VD-032 Board)
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: Set "VIDEO" mode with INPUT SELECT switch.
Switch setting:
Set the NTSC/PAL switch on the rear panel to "NTSC" (NTSC
mode) and perform this check. Only checking is performed in
"PAL" mode.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: E, address: 90, change the data and adjust the Y
level (A) to the specified value.
3) Press the PAUSE button of the adjustment remote commander.
4) Check that each illuminance point positions at the
the vectorscope.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
Y level
White
A
E-E
Color bar (NTSC: 7.5% setup mode)
(VIDEO input) (Note)
VIDEO OUTPUT terminal
(75 Ω terminated)
Vectorscope (NTSC: 7.5% setup
mode)
Oscilloscope
E
90 (Y level)
Y level: A = 1000 ± 20 mVp-p
(NTSC)
A = 1000 ± 50 mVp-p
(PAL)
C level: From the center of
on the vectorscope, each
luminance point must
satisfy the following:
Level: ± 5%
Phase: ± 3º
H
mark
C level
For NTSC mode
Y
Burst
mark on
For PAL mode
Y
L
–Y
L
Fig. 5-3-12
5-60
R
L
G
C
Y
R
–C
Y
–G
Burst
–Burst
G
C
–R
Y
M
G
B
M
G
–B
B
–M
G