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參數(shù)資料
| 型號： | LA76850 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monolithic Linear IC Black & White Television IC |
| 中文描述： | 單片線性集成電路黑色 |
| 文件頁數(shù)： | 17/31頁 |
| 文件大?。?/td> | 295K |
| 代理商： | LA76850 |
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LA76850
NoA0017-17/31
Deflection Block Test Conditions
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
Horizontal free-running
frequency
fH
Y IN:
No signal
Connect a frequency counter to the output of pin
22 (H out) and measure the horizontal free-running
frequency.
Measure the voltage for the pin 22 horizontal
output pulse’s low-level period.
Horizontal output
pulse length
Hduty
Y IN:
Horizontal/
vertical sync
signal
PAL
Y IN:
Horizontal/
vertical sync
signal
PAL
Y IN:
No signal
Horizontal output pulse
saturation voltage
V Hsat
Measure the voltage for the pin 22 horizontal
output pulse’s low-level period.
Vertical free-running
period 50 (PAL)
Vertical free-running
period 60 (NTSC)
VFR50
VFR60
Measure the vertical output period T at pin 18
T
×
15.625kHz (PAL)
T
×
15.734kHz (NTSC)
Vertical output
Measure the delay time from to the rise of the pin
22 horizontal output pulse to the fall of the Y IN
horizontal sync signal.
HPHCEN
CDMODE: 001
(PAL)
CDMODE: 002
(NTSC)
Horizontal output pulse
HPHCEN
(PAL)
(NTSC)
Y IN:
Horizontal/
vertical sync
signal
PAL
NTSC
With H PHASE: 0 and 31, measure the delay time
from the rise of the pin 22 horizontal output pulse
to the fall of the Y IN horizontal sync signal and
calculate the difference from H PHCEN.
Measuring
Horizontal position
adjustment range
HPHrange
Y IN:
Horizontal/
vertical sync
signal
PAL
H PHASE: 00000
H PHASE: 11111
Continued on next page.
22
22
22
18
28
22
20IRE
2.5V
Horizontal output
T
2.5V
20IRE
2.5V
Horizontal output
28
22
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