Carrier Balance Adjustment (Vd-28 Board); Burst Level Adjustment (Vd-28 Board) - Sony DSR-50P Service Manual

9. Carrier Balance Adjustment (VD-28 Board)

Mode Playback
Signal Arbitrary
VIDEO OUT 2 terminal (75 Ω
Measurement Point
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.
V
Fig. 5-3-16
U
2 mm
2 mm

10. Burst Level Adjustment (VD-28 Board)

Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
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.
Vectorscope
For NTSC model
V
75% cursor position
Oscillscope
H
5-61
Playback
Arbitrary
VIDEO OUT 2 terminal (75 Ω
terminated)
Vectorscope (NTSC: 7.5% setup
mode)
Oscilloscope
E
9F (NTSC)
9F , A0 (PAL) (Note)
A = 286 ± 5 mVp-p (NTSC)
A = 300 ± 5 mVp-p (PAL)
For PAL model
V
75% cursor
position
U
Fig. 5-3-17
+135°
U
-135°
A