參數(shù)資料
型號: CXA1700
廠商: Sony Corporation
英文描述: Luminance and Color Signal Processing for 8mm VCR
中文描述: 亮度和色彩信號處理毫米錄像機
文件頁數(shù): 28/51頁
文件大小: 794K
代理商: CXA1700
—28—
CXA1700AQ/AR
(2) DDS measurement
When a pulse with the following timing is input, the output from P34 (Pin 34 Y OUT) becomes as shown
below; measures each DC differential.
(3) Measurement of gain difference between PB ACC channels
The ACC amplifier in the CXA1700 has a built-in 4-channel time constants, and those time constants can
be switched by SWP (Pin 46) input. In addition, in NTSC playback chroma signal processing, PI return
occurs in the SWP (Pin 46) input for Low interval. In this measurement, the signal k, that is phase-inverted
each 1H, is input to PBC IN (Pin 45) for the Low interval of SWP; the continuous wave of the signal is
input for the High interval of SWP.
In this case, measure each channel level V
1
, V
2
, V
3
,and V
4
of output P63 (Pin 63 C OUT) and calculate
the gain difference between channels using the following equations:
G
CH12
=V
2
V
1
G
CH13
=V
3
V
1
G
CH14
=V
4
V
1
P34 (Pin 34 Y OUT) output
SG26 (Pin 26 DDS/MASK input)
SG30 (Pin 30 VIN1 input)
357mV
143mV
100% white
Y signal
3V
1.5V
0V
0V
5V
V
VOB
V
VOW
V
JOGV
SG31 (Pin 31 RECL/JVD input)
Pedestal level reference
Sync tip level reference
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PDF描述
CXA1700AQ Luminance and Color Signal Processing for 8mm VCR
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