參數(shù)資料
型號(hào)： 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(yè)數(shù)： 26/39頁(yè)
文件大小： 206K
代理商： LA7615
No. 5841-26/39
LA7615
Continued from preceding page.
Parameter
Symbol
Test point
Input signal
Test procedure
Bus condition
Demodulation angle B-Y/R-Y
Demodulation angle G-Y/R-Y
Killer operating point
Chrominance VCO free-running
frequency
Chrominance pull-in range (+)
Chrominance pull-in range (–)
Auto Flesh characteristics 73°
Auto Flesh characteristics 118°
Auto Flesh characteristics 163°
Overload characteristics 1
ANG
BR
ANG
GR
KILL
C
VCOF
PUL
IN+
PUL
IN–
AF073
AF118
AF163
OVL1
C-1
C-1
C-3
CIN
No signal
C-1
C-1
C-4
C-4
C-4
C-5
Measure the B
OUT
and R
OUT
output levels and calculate
the angle between the B-Y and R-Y axes. Calculate
ANG
BR
= (R-Y angle) – (B-Y angle).
Measure the GOUT output level and calculate the angle
between the G-Y and R-Y axes. Calculate ANG
GR
= (R-Y
angle) – (G-Y angle).
Gradually decrease the amplitude of the input signal and
measure the input level when the output level falls less
than 150 mVpp.
Measure the oscillator frequency f and calculate the
following formula. C
VCOF
= f – 3579545 (Hz)
Gradually decrease the input signal subcarrier frequency
starting at 3.579545 MHz + 1000 Hz, and measure
frequency at the point the output waveform locks.
Gradually raise the input signal subcarrier frequency
starting at 3.579545 MHz – 1000 Hz, and measure
frequency at the point the output waveform locks.
With Auto Flesh = 0, measure the level that corresponds
to a B
OUT
and R
OUT
output waveform of 73° and calculate
the angle AF073A.
With Auto Flesh = 1, measure the angle AF073B in the
same manner.
Calculate the following formula.
AF073 = AF073B – AF073A
With Auto Flesh = 0, measure the level that corresponds
to a B
OUT
and R
OUT
output waveform of 118° and
calculate the angle AF118A.
With Auto Flesh = 1, measure the angle AF118B in the
same manner.
Calculate the following formula.
AF118 = AF118B – AF118A
With Auto Flesh = 0, measure the level that corresponds
to a B
OUT
and R
OUT
output waveform of 163° and
calculate the angle AF163A.
With Auto Flesh = 1, measure the angle AF163B in the
same manner.
Calculate the following formula.
AF163 = AF163B – AF163A
Measure V1: the output amplitude when the input signal
burst level is set to 40 IRE and the chrominance level is
set to 8 IRE, and V2: the output amplitude when the input
signal burst level is set to 40 IRE and the chrominance
level is set to 40 IRE.
Calculate the following formula.
OVL1 = V2/V1
TR26: Auto Flesh :
****
0
**
TR26: Auto Flesh :
****
1
**
TR26: Auto Flesh :
****
0
**
TR26: Auto Flesh :
****
1
**
TR26: Auto Flesh :
****
0
**
TR26: Auto Flesh :
****
1
**
TR26: OverLoad :
******
1
38
36
37
38
16
38
38
38
36
38
36
38
36
36
Continued on next page.
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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