LA76814 查看數據表（PDF） - SANYO -> Panasonic
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LA76814
SANYO -> Panasonic
LA76814 Datasheet PDF : 35 Pages
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Video Block Test Conditions
Parameter
Video overall gain
(Contrast max)
Symbol
CONT127
Test point
21
Contrast
Normal
CONT63
adjustment /max
21
characterist
ics
Min/
CONT0
max
21
Video
SVHS
BW1
frequency
21
Characteris
tics
NTSC
BW3
21
Chroma trap amount
Ctrap
21
DC transmission
amount
ClampG
21
Y-DL TIME SVHS
TdY1
21
NTSC
TdY3
21
Maximum black
stretch gain
BKSTmax
21
Black stretch
threshold ∆black
(60IRE ∆black)
BKSTTH∆
21
LA76814
Input signal
L-50
L-50
L-50
L-CW
L-CW
L-CW
L-0
L-100
L-50
L-50
L-BK
L-40
Test method
Measure the output signal’s 50IRE amplitude.
···· CNTHB[Vp-p]
CONT127 = 20Log (CNTHB/0.357).
Measure the output signal’s 50IRE amplitude.
···· CNTCB[Vp-p]
CONT63 = 20Log (CNTCB/0.357).
Measure the output signal’s 50IRE amplitude.
···· CNTLB[Vp-p]
CONT0 = 20Log (CNTLB/0.357).
With the input signal’s continuous wave = 100kHz,
measure the output signal’s continuous wave
amplitude. ···· PEAKDC[Vp-p]
With the input signal’s continuous wave = 7MHz,
measure the output signal’s continuous wave
amplitude. ···· CW7[Vp-p]
BW1 = 20Log (CW7/PEAKDC)
With the input signal’s continuous wave = 2.5MHz,
measure the output signal’s continuous wave
amplitude. ···· CW2.5[Vp-p]
BW3 = 20Log (CW2.5/PEAKDC)
With the input signal’s continuous wave =
3.58MHz, measure the output signal’s continuous
wave amplitude. ···· F00[Vp-p]
Ctrap = 20Log (F00/PEAKDC)
Measure the output signal’s 0IRE DC level.
···· BRTPL[V]
Measure the output signal’s 0IRE DC level:
DRVPH[V] and 100IRE amplitude: DRVH[Vp-p].
ClampG = 100 × (1+(DRVPH-BRTPL)/DRVH).
Obtain the time difference (the delay time) from
when the rise of the input signal's 50IRE amplitude
to the output signal's 50IRE amplitude.
Obtain the time difference (the delay time) from
when the rise of the input signal's 50IRE amplitude
to the output signal's 50IRE amplitude.
Measure the 0IRE DC level at point A of the output
signal in the Black Stretch Defeat (Black Stretch
OFF) mode. ···· BKST1[V]
Measure the 0IRE DC level at point A of the output
signal in the Black Stretch ON mode. ···· BKST2[V]
BKSTmax = 2×50× (BKST1-BKST2)/CNTHB
Bus conditions
CONTRAST:
1111111
CONTRAST:
0111111
CONTRAST:
0000000
FILTER SYS: 100
SHARPNESS:
000000
FILTER SYS: 0000
SHARPNESS:
000000
FILTER SYS: 000
SHARPNESS:
000000
Brightness:
0000000
CONTRAST:
1111111
Brightness:
0000000
Contrast:
1111111
FILTER SYS: 100
FILTER SYS: 000
Blk Str DEF: 0
Measure the 40IRE DC level of the output signal in
the Black Stretch Defeat ON mode. ···· BKST3[V]
Measure the 60IRE DC level of the output signal in
the Black Stretch Defeat (Black Stretch OFF)
mode. ···· BKST4[V]
BKSTTH∆ = 50× (BKST4-BKST3)/CNTHB
Blk Str DEF: 0
Continued on next page.
No.A0253-17/35
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