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5-20
16-2. PSD Sensor Gain Adjustment (2)
Subject
Pattern B
(1.5m from the front of the lens)
(1.5m from the front of the lens)
Measurement Point
Video output terminal
Measuring Instrument
Oscilloscope
(H period)
(H period)
Adjustment Page
E
Adjustment Address
49
Fig.5-1-14.
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: E, address: 49, set data: 80, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
3)
Select page: 6, address: 01, set data: 8F, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
4)
Expose pattern B with the zoom TELE end.
5)
Adjust the focus.
6)
Measure the horizontal position SH1 (
µ
sec) of the falling edge
of the waveform. (Oscilloscope is H period)
7)
Select page: 6, address: 01, set data: 91, and press the PAUSE
button.
button.
8)
Measure the horizontal position SH2 (
µ
sec) of the falling edge
of the waveform. (Oscilloscope is H period)
9)
Obtain D49' using the following equation (decimal calculation).
D
D
49
' = 128
×
(7.4/(SH2–SH1))
10) Convert D
49
' to hexadecimal notation, and obtain D
49
. (Round
off to one decimal place)
(Refer to Table 5-4-1. “Hexadecimal notation-Decimal notation
conversion table” of “5-4. Service Mode”. )
(Refer to Table 5-4-1. “Hexadecimal notation-Decimal notation
conversion table” of “5-4. Service Mode”. )
11) Select page: E, address: 49, set data: D
49
, and press the PAUSE
button of the adjustment remote commander.
Processing after Completing Adjustments
1)
1)
Select page: 6, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
2)
Select page: 0, address: 01, and set data: 00.
3)
Check that the steady shot operation is performed normally.
Fig. 5-1-15.
White
White
Black
Pattern B
A4 size (297mm
×
210mm)
H
SH1 (
µ
sec)
SH2 (
µ
sec)
SH2–SH1
Falling edge of
waveform when
data is “91”
waveform when
data is “91”
Falling edge of
waveform when
data is “8F”
waveform when
data is “8F”
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