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6-58
3-11. EMPHASIS INPUT LEVEL ADJUSTMENT
Purpose :
Adjusts the record emphasis characteristics to
the specification value.
the specification value.
Adjustment error :
Luminance signal smear, blurred picture, too
much emphasized edge of overall video
characteristics.
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
• 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 pin4
(A) satisfies the specification.
(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)
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