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參數(shù)資料
| 型號： | TB1254N |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP56 |
| 封裝： | 0.600 INCH, PLASTIC, SDIP-56 |
| 文件頁數(shù)： | 32/58頁 |
| 文件大?。?/td> | 526K |
| 代理商： | TB1254N |
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Ver3.7
00/01/28 38
Note
Items/Symbols
Bus conditoins
Measurement methods
V9
Uni-Color
Characteristics for Y
/ GUCYMAX
/ GUCYCEN
/ GUCYMIN
Uni-
Color:0/64/127
Color:0
RGB Mute:0
R cut off:63
DC rest.:10
Others:Preset
(1)Input a 50IRE white signal with sync into Pin38&39.
(2)Measure the output picture amplitude at Pin20 for Uni-
Color:127/64/0, that is VUCYMAX / VUCYCEN / VUCYMIN.
(3)Calculate; "GUCYMAX"=20*log(VUCYMAX/0.357)"
"GUCYCEN"=20*log(VUCYCEN/0.357)
"GUCYMIN"=20*log(VUCYMIN/0.357)
V10
Sub-Contrast
Characteristics
/ GSCONMAX
/ GSCONMIN
Sub-Contrast:
0/8/15
Uni-Color:127
Color:0
RGB Mute:0
R cut off:63
DC rest.:10
Others:Preset
(1)Input a 50IRE white signal with sync into Pin38&39.
(2)Measure the output picture amplitude at Pin20 for Sub-
Contrast 15/8/0,
that is VSCONMAX / VSCONCEN / VSCONMIN.
(3)Calculate; "GSCONMAX"=20*log(VSCONMAX/VSCONCEN)
"GSCONMIN"=20*log(VSCONMIN/VSCONCEN)
V11
Sharpness
Peaking
Frequency
/ FSHP
Sharpness:63
Uni-Color:127
Color:0
RGB Mute:0
R cut off:63
DC
rest.:10
Others:Preset
(1)Input a 0.5Vp-p sweep signal with sync into Pin38&39.
(2)Measure the frequency at which the Pin20 output amplitude is
Max., that is "FSHP".
V12
Sharpness
Control
Characteristics
/ GSHMAX
/ GSHCEN
/ GSHMIN
Sharpness:0/32/6
3
Uni-Color:127
Color:0
RGB Mute:0
R cut off:63
DC
rest.:10
Others:Preset
(1)Input a 0.5Vp-p sweep signal with sync into Pin38&39.
(2)Measure the output picture amplitude for 100kHz at Pin20, that
is VSH100k.
(3)Measure the output picture amplitude for FSHP when
Sharpness is max.,center and min., that is VSHMAX, VSHCEN and
VSHMIN.
(4)Calculate; "GSHMAX"=20*log(VSHMAX/VSH100k)
"GSHCEN"=20*log(VSHCEN/VSH100k)
"GSHMIN"=20*log(VSHMIN/VSH100k)
V13
Y correction start
point
/ VY
70
/ VY
80
/ VY
90
Y correction curve
/ GY
Uni-Color:127
Color:0
RGB Mute:0
R cut off:63
DC rest.:10
point:01/10/11
Others:Preset
(1)Input a gray raster with sync to Pin38&39.
(2)Set BUS data so that point is 90IRE.
(3)Increasing a video amplitude of input from 50IRE, measure a
video ampitude as the figure below, that is “VY
90”
(4)Set BUS data so that point is 80IRE.And repeat (3), that is
“VY
80”.
(5)Set BUS data so that point is 70IRE.And repeat (3), that is
“VY
70”.
(6)From the measurement in the above, find gain of the portion
that the correction has an effect on.
Y =off
Y =90/80/70IRE
#39 input
#20
output
V
Y90
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