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參數(shù)資料
| 型號(hào)： | LA76810A |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monolithic Linear IC For PAL/NTSC Color Television Sets VIF/SIF/Y/Deflection 1chip IC |
| 中文描述： | 單片線性集成電路為PAL / NTSC制式彩電資料表格/應(yīng)力強(qiáng)度因子/年/撓度1chip集成電路 |
| 文件頁(yè)數(shù)： | 23/40頁(yè) |
| 文件大小： | 504K |
| 代理商： | LA76810A |
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vertical sync
signal
PAL
NTSC
LA76810A
NoA0252-23/40
Deflection Block Test Conditions
Input signal
Symbol
Test point
Input signal
Test method
Bus bit/input signal
Horizontal free-running
frequency
fH
Y IN:
No signal
Connect a frequency counter to the output of pin
27 (H out) and measure the horizontal
free-running frequency.
Horizontal pull-in range
fH PULL
YIN:
Horizontal/
vertical sync
signal
PAL
Using an oscilloscope, monitor the horizontal
sync signal which is input to the Y IN (pin 42) and
the pin 27 output (H out) and vary the horizontal
signal frequency to measure the pull-in range.
Horizontal output
pulse length
Hduty
Y IN:
Horizontal/
vertical sync
signal
PAL
Measure the voltage for the pin 27 horizontal
output pulse’s low-level period.
Horizontal output pulse
saturation voltage
V Hsat
Y IN:
Horizontal/
vertical sync
signal
PAL
Measure the voltage for the pin 27 horizontal
output pulse’s low-level period.
Vertical free-running
period 50 (PAL)
Vertical free-running
period 60 (NTSC)
VFR50
VFR60
Y IN:
No signal
Measure the vertical output period T at pin 18
T
×
15.625kHz (PAL)
T
×
15.734kHz (NTSC)
CDMODE: 001
(PAL)
CDMODE: 002
(NTSC)
Horizontal output pulse
HPHCEN
(PAL)
(NTSC)
Y IN:
Horizontal/
Measure the delay time from to the rise of the pin
27 horizontal output pulse to the fall of the Y IN
horizontal sync signal.
HPHCEN
Horizontal position
adjustment range
HPHrange
Y IN:
Horizontal/
vertical sync
signal
PAL
With H PHASE: 0 and 31, measure the delay time
from the rise of the pin 27 horizontal output pulse
to the fall of the Y IN horizontal sync signal and
calculate the difference from H PHCEN.
Measuring
HPHCEN
H PHASE: 00000
H PHASE: 11111
Continued on next page.
27
42
27
27
23
42
27
42
27
20IRE
2.5V
Horizontal output
T
2.5V
Vertical output
20IRE
2.5V
Horizontal output
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