Sony DVCAM DSR-PDX10 Service Manual page 187

DSR-PDX10/PDX10P
15. PSD Sensor Gain Adjustment
Adjust the gain of the PSD sensor for the steady shot operation.
Perform this adjustment only when replacing the lens block. When
the microprocessor, circuit etc. is damaged, don't perform this
adjustment but check the operations only.
Note: NTSC model: DSR-PDX10
PAL model: DSR-PDX10P
1) POWER .................................................................. CAMERA
2) ZOOM .................................................................... TELE end
3) DIGITAL ZOOM (Menu display) ................................... OFF
4) STEADY SHOT (Menu display) ..................................... OFF
15-1. PSD Sensor Gain Adjustment (1)
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Note: The data of page: 0, address: 10 must be "00".
Pattern A
A4 size (297mm × 210mm)
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 84, set data: 80, and press the pause
button.
3) Select page: 6, address: 01, set data: 8F, and press the pause
button.
4) Shoot the pattern A with the zoom TELE end.
5) Adjust the focus.
6) Measure the vertical position SV1 (msec) of the falling edge
of the waveform. (Oscilloscope is V period)
7) Select page: 6, address: 01, set data: 91, and press the pause
button.
8) Measure the vertical position SV2 (msec) of the falling edge
of the waveform. (Oscilloscope is V period)
9) Obtain D ' using the following equation (decimal calculation).
84
NTSC model:
'= 128 × (2.751/(SV2-SV1))
D
84
= 352.1/(SV2-SV1)
PAL model:
'= 128 × (3.298/(SV2-SV1))
D
84
= 422.1/(SV2-SV1)
10) Convert D ' to hexadecimal notation, and obtain D
84
off to one decimal place)
(Refer to Table 6-4-1. "Hexadecimal-Decimal conversion table"
of "6-4. Service Mode". )
11) Select page: F, address: 84, set data: D
button.
Pattern A
(1.5m from the front of the lens)
Video terminal of AUDIO/VIDEO
jack
Oscilloscope (V period)
F
84
White
Black
White
Fig. 6-1-18.
84
, and press the pause
84
Processing after Completing Adjustments
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2) Select page: 0, address: 01, and set data: 00.
3) Perform "PSD Sensor Gain Adjustment (2)".
Falling edge of
waveform when
data is "8F"
. (Round
6-32
V
Falling edge of
waveform when
data is "91"
SV2–SV1
SV2 (msec)
SV1 (msec)
Fig. 6-1-19.