Sony CCD-TRV312 Operating Instructions (primary manual), Руководство по обслуживанию

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3-12. EMPHASIS INPUT LEVEL ADJUSTMENT
Purpose :
Adjusts the record emphasis characteristics to
the specification value.
Adjustment error : Luminance signal smear, blurred picture, too
much emphasized edge of overall video
characteristics.
Mode CAM-REC
Signal Color bar chart
Measurement Point • CN102 Pin
4
• VIDEO output terminal
(terminated in 75
Ω
)
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 31
Specification Value A=(Vo
×
0.96
×
500) mVp-p
±
2%
Adjustment procedure:
Order Page Address Data Procedure
1 6 00 01 After setting the data, press the PAUSE button. (Preparation)
2 6 01 Read the data of page : 6, address : 01, and record it.
3 6 01 47 After setting the data, press the PAUSE button.
4 Measure amplitude of the VIDEO OUT. The measured value is “Vo”[V].
5 F 31 Change data using PLAY and STOP buttons so that the Y signal level at CN102 pin
4
(A) satisfies the specification.
6 Press the PAUSE button.
7 6 01 Set the data which is recorded in step 2 to this address and, press the PAUSE button.
8 6 00 00 After setting the data, press the PAUSE button. (End)
White (100%)
H
A