參數(shù)資料
型號： LA76075
廠商： Sanyo Electric Co.,Ltd.
英文描述： NTSC Color Television Sets
中文描述： NTSC制式彩電
文件頁數(shù)： 20/35頁
文件大?。?/td> 712K
代理商： LA76075
No. 5845-20/35
LA76075
Item
Symbol
Measurement
Point
Input
Signal
Measurement Procedure
Bus Condition
Demodulator angle B-Y/
R-Y
Measure the BOUT and ROUT output levels, calculate
the B-Y and R-Y angles, and substitute in the following
formula.
ANGBR = R-Y angle - B-Y angle
ANGBR
30
28
C-1
Demodulator angle G-Y/
B-Y
Measure the GOUT output level, calculate the B-Y and
R-Y angles, and substitute in the following formula.
ANGBG = G-Y angle - B-Y angle
ANGBG
29
C-1
Killer operation point
Gradually lower the input signal level and measure the
input level at which the output level falls below 150
mVp-p
KILL
30
C-3
Chroma VCO free run
frequency
Measure the oscillation frequency f and substitute in
the following formula.
CVCOF = f – 357945 (Hz)
CVCOF
42
CIN
No signal
Chroma pull-in range (+)
Gradually lower the input signal subcarrier frequency
from 3.57545 MHz + 1000 Hz and measure the
frequency at which the output waveform locks.
PULIN+
30
C-1
Chroma pull-in range (–)
Gradually raise the input signal subcarrier frequency
from 3.57545 MHz - 1000 Hz and measure the
frequency at which the output waveform locks.
PULIN–
30
C-1
Auto Flesh characteristic
73°
Set AutoFlesh to “0,” measure the levels at the 73°
portions of the BOUT and ROUT output waveforms,
and calculate the angle AF073A. Set AutoFlesh to “1,”
repeat the procedure to determine AF073B, and
substitute in the following formula.
AF073 = AF073B – AF073A
AutoFlesh : 0
AutoFlesh : 1
AF073
30
28
C-4
Auto Flesh characteristic
118°
Set AutoFlesh to “0,” measure the levels at the 118°
portions of the BOUT and ROUT output waveforms,
and calculate the angle AF118A. Set AutoFlesh to “1,”
repeat the procedure to determine AF118B, and
substitute in the following formula.
AF118 = AF118B – AF118A
AutoFlesh : 0
AutoFlesh : 1
AF118
30
28
C-4
Auto Flesh characteristic
163°
Set AutoFlesh to “0,” measure the levels at the 163°
portions of the BOUT and ROUT output waveforms,
and calculate the angle AF163A. Set AutoFlesh to “1,”
repeat the procedure to determine AF163B, and
substitute in the following formula.
AF163 = AF163B – AF163A
AutoFlesh : 0
AutoFlesh : 1
AF163
30
28
C-4
Overload characteristic 1
Measure V1, the output amplitude (Vp-p) for an input
signal burst level of 40 IRE and a chroma level of 8
IRE, and V2, the same for a burst level of 40 IRE and
a chroma level of 40 IRE, and substitute in the
following formula.
OVL1 = V2/V1
OverLoad : 1
OVL1
28
C-5
Continued from preceding page.
Overload characteristic 2
Measure V3, the output amplitude (Vp-p) for an input
signal burst level of 40 IRE and a chroma level of 80
IRE, and substitute in the following formula.
OVL2 = V3/V1
OverLoad : 1
OVL2
28
C-5
Overload characteristic 3
Measure V4, the output amplitude (Vp-p) for an input
signal burst level of 20 IRE and a chroma level of 80
IRE, and substitute in the following formula.
OVL3 = V4/V1
OverLoad : 1
OVL3
28
C-5
fsc output amplitude
(Vp-p)
Measure the output amplitude (V{p-p}) of the 3.58-MHz
CW output at pin 42 (FSC OUT).
Vfsc
42
C-1
Continued on next page.
相關(guān)PDF資料
PDF描述
LA7615 Single-Chip NTSC Color TV IC
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA7612A 制造商:SANYO Semiconductor Co Ltd 功能描述:
LA7615 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip NTSC Color TV IC
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
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