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參數資料
| 型號： | LA76810HA |
| 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： | 24/41頁 |
| 文件大小： | 417K |
| 代理商： | LA76810HA |
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LA76810HA
No.A1143-30/41
Continued from preceding page.
Input signal
Symbol
Test point
Input signal
Test method
Bus bit/input signal
Vertical S-shaped
correction @16
VScor16
Y IN:
Horizontal/
vertical sync
signal
PAL
Monitor the pin 23 vertical ramp output and
measure the voltage at line 36, line 60, line 155,
line 179, line 274 and 298. Assign the
respective measured values to Va, Vb, Vc, Vd,
Ve and Vf. Calculate as follows:
VScor16 = 0.5((Vb-Va)+(Vf-Ve))/(Vd-Vc)
VS: 10000
Vertical S-shaped
correction @0
VScor0
Y IN:
Horizontal/
vertical sync
signal
PAL
Monitor the pin 23 vertical ramp output and
measure the voltage at the line 36, line 60, line
155, line 179, line 274 and line 298
with VSC = 00000.
Assign the respective measured values to Va, Vb,
Vc, Vd, Ve and Vf. Calculate as follows:
VScor0 = 0.5((Vb-Va)+(Vf-Ve))/(Vd-Vc)
Vertical S-shaped
correction @31
VScor31
Y IN:
Horizontal/
vertical sync
signal
PAL
Monitor the pin 23 vertical ramp output and
measure the voltage at line 36, line 60, line 155,
line 179, line 274 and 298. Assign the
respective measured values to Va, Vb, Vc, Vd,
Ve and Vf. Calculate as follows:
VScor16 = 0.5((Vb-Va)+(Vf-Ve))/(Vd-Vc)
VSC: 11111
15
23
Vertical ramp output
Line 155
Line 36
Line 274
Line 298
Line 60
Line 179
Vertical ramp output
Line 155
Line 36
Line 274
Line 298
Line 60
Line 179
Vertical ramp output
Line 155
Line 36
Line 274
Line 298
Line 60
Line 179
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