5-61
9.
Carrier Balance Adjustment (VD-28 Board)
Mode
Playback
Signal
Arbitrary
Measurement Point
VIDEO OUT 2 terminal (75
Ω
terminated)
Measuring Instrument
Vectorscope (NTSC: 7.5% setup
mode)
Adjustment Page
E
Adjustment Address
A3, A4
Specified Value
White luminance point settles within
the circle (Ø 2 mm) on center of the
vectorscope
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 01, and press the PAUSE
button of the adjustment remote commander.
3) Set the vectorscope gain to x10.
4) Change the data on page: E, address: A3, A4 and adjust so that
a white luminance point positions in the center of vectorscope.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
7) Select page: 0, address: 01, and set data: 00.
10. Burst Level Adjustment (VD-28 Board)
Mode
Playback
Signal
Arbitrary
Measurement Point
VIDEO OUT 2 terminal (75
Ω
terminated)
Measuring Instrument
Vectorscope (NTSC: 7.5% setup
mode)
Oscilloscope
Adjustment Page
E
Adjustment Address
9F (NTSC)
9F , A0 (PAL) (Note)
Specified Value
A = 286 ± 5 mVp-p (NTSC)
A = 300 ± 5 mVp-p (PAL)
Note:
PAL model is the tracking adjustment in relation to
address: 9F and A0.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 01, and press the PAUSE
button of the adjustment remote commander.
3) Adjust the phase synchronization control on the vectorscope
so that the burst luminance point is close to the U-axis (NTSC
model) or axis of ±135° (PAL model).
4) Select page: E, address: 9F (NTSC model) or 9F, A0 (PAL
model), change tha data and adjust the the burst luminance
point to the 75% cursor position of the vectorscope.
5) Press the PAUSE button of the adjustment remote commander.
6) Confirm with the oscilloscope that the burst level (A) satisfied
the specified value.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
8) Select page: 0, address: 01, and set data: 00.
V
U
2 mm
2 mm
Fig. 5-3-16
75% cursor position
V
U
75% cursor
position
V
+135
°
-135
°
U
A
H
Fig. 5-3-17
Vectorscope
For NTSC model
For PAL model
Oscillscope
