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參數資料
| 型號： | LA76818A |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP54 |
| 封裝： | 0.600 INCH, DIP-54 |
| 文件頁數： | 14/44頁 |
| 文件大小： | 289K |
| 代理商： | LA76818A |
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LA76818A
No.8047-21/44
Continued from preceding page.
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
Drive adjustment
maximum output
RBout127
Gout15
19
20
21
L-100
Measure the 100IRE amplitudes of the respective
output signals of R output (19) and B output (21).
DRVH* [Vp-p]
*: R and B
Measure the 100IRE amplitude of the output
signal of G output (20) and assign the measured
value to DRVH* [Vp-p].
*: G
Brightness:
0000000
Measure the 100IRE amplitudes of the respective
output signals of R output (19), G output (20), and
B output (21). DRVL* [Vp-p]
*: R and B
Measure the 100IRE amplitude of the output
signal of G output (20) and assign the measured
value to DRVL* [Vp-p].
*: G
Output attenuation
RBout0
Gout0
19
20
21
L-100
RBout0* = 20Log (DRVH*/DRVL*)
Gout0* = 20Log (DRVH*/DRVL*)
Brightness:
0000000
Red/Blue Drive:
0000000
Green Drive: 0000
VIDEO SW Block Test Conditions
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
Video signal input
1DC voltage
VIN1DC
42
L-100
Input signals to pin 42 and measure the voltage of
the pedestal.
VIDEO SW: 1
Video signal input
1 AC voltage
VIN1AC
42
Pin 42 recommended input level
Video signal input
2DC voltage
VIN2DC
44
L-100
Input signals to pin 44 and measure the voltage of
the pedestal.
VIDEO SW: 0
Video signal input
2 AC voltage
VIN2AC
44
Pin 44 recommended input level
SVO terminal DC
voltage
SVODC
40
L-100
Input signals to pin 42 and measure the voltage of
the pedestal at pin 40.
VIDEO SW: 1
SVO terminal AC
voltage
SVOAC
40
L-100
Input signals to pin 42 and measure the voltage of
the pedestal at pin 40.
VIDE0 SW: 1
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