參數(shù)資料
型號(hào)： 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)： 21/31頁
文件大小： 295K
代理商： LA76850
LA76850
NoA0017-21/31
Continued from preceding page.
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
<Vertical screen size correction>
Vertical ramp output
Amplitude
PAL@64
NTSC@64
Vspal64
Vsnt64
Y IN:
Horizontal/
vertical sync
signal
PAL
NTSC
Monitor the pin 18 vertical ramp output and
measure the voltage at line 24 (22:NTSC) and line
310 (262:NTSC).
Calculate as follows:
Vspal64 = Vline310-Vline24
Vsnt64 = Vline262-Vline22
Vertical ramp output
Vertical ramp output
amplitude PAL@0
NTSC@0
Vspal0
Vsnt0
Y IN:
Horizontal/
vertical sync
signal
PAL
NTSC
Monitor the pin 18 vertical ramp output and
measure the voltage at line 24 (22:NTSC) and line
310 (262:NTSC).
Calculate as follows:
Vspal0 = Vline310-Vline24
Vsnt0 = Vline262-Vline22
Vertical ramp output
VSIZE: 0000000
Vertical ramp output
amplitude PAL@127
NTSC@127
Vspal127
Vsnt127
Y IN:
Horizontal/
vertical sync
signal
PAL
NTSC
Monitor the pin 18 vertical ramp output and
measure the voltage at line 24 (22: NTSC) and line
310 (262: NTSC).
Calculate as follows:
Vspal27 = Vline310-Vline24
Vsnt127 = Vline262-Vline22
VSIZE: 1111111
<High-voltage dependent vertical size correction>
Vertical size
correction@0
Vsizecomp
Y IN:
Horizontal/
vertical sync
signal
PAL
Monitor the pin 18 vertical ramp output and
measure the voltage at the line 24 and line 310
with VCOMP = 000. Calculate as follows:
Va = Vline310-Vline24
Apply 4.1V to pin 13 and measure the voltage at
the line 24 and line 310 again. Calculate as
follows:
Va = Vline310-Vline24
Calculate as follows:
Vsizecomp = Vb/Va
Vertical ramp output
VCOMP: 000
Continued on next page.
Line 310
Line 24
Line 310
Line 24
Vertical ramp output
Line 310
Line 24
Line 310
Line 24
18
18
18
18
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PDF描述
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LA76930 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LA76930
LA76931J7FB-E 制造商:ON Semiconductor 功能描述:SIGNAL PROCESSING FOR CRT - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / SIGNAL PROCESSING FOR CRT
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