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參數(shù)資料
| 型號： | LA7615 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip NTSC Color TV IC |
| 中文描述： | 單片集成電路NTSC制式彩電 |
| 文件頁數(shù)： | 31/39頁 |
| 文件大?。?/td> | 206K |
| 代理商： | LA7615 |
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No. 5841-31/39
LA7615
Continued from preceding page.
Parameter
Symbol
Test point
Input signal
Test procedure
Bus condition
Vertical ramp output amplitude
@0
Vertical ramp output amplitude
@127
Vertical size correction @7
(maximum)
Vertical ramp DC voltage @32
Vertical ramp DC voltage @0
Vsize0
Vsize127
Vsizecomp
Vdc32
Vdc0
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
Monitor the pin 19 vertical ramp output and measure
the voltages at the 22nd line and at the 262nd line.
Calculate the following formula.
Vsize0 = Vline262 – Vline22
Monitor the pin 19 vertical ramp output and measure
the voltages at the 22nd line and at the 262nd line.
Calculate the following formula.
Vsize0 = Vline262 – Vline22
Monitor the pin 19 vertical ramp output and measure
the voltages at the 22nd line and at the 262nd line.
Calculate Va from the following formula.
Va = Vline262 – Vline22
Next, apply 3.8 V to pin 18, and once again measure
the voltages at the 22nd line and at the 262nd line.
Calculate Vb from the following formula.
Vb = Vline262 – Vline22
Finally, calculate Vsizecomp from the following
formula.
Vsizecomp = (Va – Vb)/Va
×
100
Monitor the pin 19 vertical ramp output and measure
the voltage at the 142nd line.
Monitor the pin 19 vertical ramp output and measure
the voltage at the 142nd line.
V
SIZE
: 0000000
V
SIZE
: 1111111
V
COMP
: 111
V
DC
: 000000
19
19
19
19
19
A10079
A10080
A10081
A10082
[High-Voltage Dependency Vertical Size Correction]
[Vertical Screen Position Adjustment]
Continued on next page.
262nd line
22nd line
Vertical ramp output
262nd line
22nd line
Vertical ramp output
142nd line
Vertical ramp output
Vertical ramp output
142nd line
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA7620 | Color TV Video, Chroma, Deflection Circuit |
| LA7625 | Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | Color TV/Video,Chroma,Deflection Circuit |
| LA7640N | Chroma Circuit for SECAM-system Color Television Sets |
| LA7642N | SECAM Format Color TV Chrominance Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7620 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV Video, Chroma, Deflection Circuit |
| LA7621 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA7625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7626 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV/Video,Chroma,Deflection Circuit |
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