Sony DSR-250, Руководство по обслуживанию

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5-71
3. S VIDEO OUT Chroma Level Adjustment
(VI-156 board)
Mode Camera
Subject Arbitrary
Measurement Point Chroma signal terminal of S VIDEO
jack (75
Ω
terminated)
External trigger: Y signal terminal of
S VIDEO jack
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 26, 27
Specified Value Cr level: A = 714 ± 14mV(NTSC)
A = 700 ± 14mV(PAL)
Cb level: B = 714 ± 14mV(NTSC)
B = 700 ± 14mV(PAL)
Burst level: C = 286 ± 6mV(NTSC)
C = 300 ± 6mV(PAL)
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 2 35 Note down the data.
3 2 35 01 Set the data.
4 3 0C 02 Set the data, and press PAUSE
button.
5 C 26 Change the data and set the Cr
signal level (A) to the specified
value.
6 C 26 Press PAUSE button.
7 C 27 Change the data and set the Cb
signal level (B) to the specified
value.
8 C 27 Press PAUSE button.
9 Check that the burst signal level
(C) is satisfied the specified value.
10 3 0C 00 Set the data, and press PAUSE
button.
11 2 35 Set the data that is noted down at
step 2.
12 0 01 00 Set the data.
4. VIDEO OUT Y, Chroma Level Check (VI-156 board)
Mode Camera
Subject Arbitrary
Measurement Point VIDEO jack (75
Ω
terminated)
Measuring Instrument Oscilloscope
Specified Value Sync level: A = 286 ± 18mV(NTSC)
A = 300 ± 18mV(PAL)
Burst level: B = 286 ± 18mV(NTSC)
B = 300 ± 18mV(PAL)
Adjusting method:
Order Page Address Data Procedure
1 2 35 Note down the data.
2 2 35 01 Set the data.
3 3 0C 02 Set the data, and press PAUSE
button.
4 Check that the sync signal level
(A) satisfies the specified value.
5 Check that the burst signal level
(B) satisfies the specified value.
6 3 0C 00 Set the data, and press PAUSE
button.
7 2 35 Set the data that is noted down at
step 1.
8 0 01 00 Set the data.
H
C
A
0.28
µ
sec (NTSC)
0.23
µ
sec (PAL)
B
0.28
µ
sec (NTSC)
0.23
µ
sec (PAL)
H
B
A
Fig. 5-3-9.
Fig. 5-3-10.