參數(shù)資料
型號(hào)： TB1254N
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDIP56
封裝： 0.600 INCH, PLASTIC, SDIP-56
文件頁數(shù)： 40/58頁
文件大小： 526K
代理商： TB1254N
Ver3.7
00/01/28 45
TEXT STAGE(RGB Mute:0 / RGB cut off:63 / DC rest.:10)
Note
Items/Symbols
Bus conditoins
Measurement methods
T1
V-BLK Pulse Output
Level
/ VVBLK
H-BLK Pulse Output
Level
/ VHBLK
All:Preset
(1)Input a cmposite sync signal into Pin38.
(2)Measure the DC level of V/H blanking period at Pin20, that is
"VVBLK" / "VHBLK".
T2
RGB
Output
Black
Level (0IRE DC)
/ VBLACK
RGB Mute:0
Color:0
R cut off:63
DC rest.:10
Others:Preset
(1)Input a 0IRE Y signal with sync into Pin38&39.
(2)Measure the DC level of picture period at Pin20, that is "VBLACK".
T3
RGB Output White
Level(100 IRE AC)
/ VWHITE
RGB Mute:0
R cut off:63
DC rest.:10
Uni-Color:127
Color:0
Others:Preset
(1)Input a 100IRE Y signal with sync into Pin38&39.
(2)Measure the amplitude from 0 to 100IRE at Pin20, that is
"VWHITE".
T4
Cut-off Voltage
Variable Range
/
VCUT+
/
VCUT-
RGB Mute:0
DC rest.:10
B Cut Off:0/255
Color:0
Others:Preset
(1)Input a 0IRE Y signal with sync into Pin38&39.
(2)Measure the DC level of picture period at Pin22 for B Cut-
off:255/0 , that is
VCUTMAX / VCUTMIN.
(3)Calculate; "
VCUT+"=VCUTMAX-VBLACK "VCUT-"=VCUTMIN-VBLACK
T5
Drive Control Variable
Range
/ GDR+
/ GDR-
RGB Mute:0
DC rest:10
B Drive:0/127
Uni-Color:127
Color:0
Others:Preset
(1)Input a 100IRE Y signal with sync into Pin38&39.
(2)Measure the amplitude from 0 to 100IRE at Pin20 for B
drive127/0, that is
VDRMAX / VDRMIN.
(1)
Calculate; "GDR+"=20*log(VDRMAX/VWHITE)
"GDR-"=20*log(VDRMIN/VWHITE)
T6
ABCL Contorol
Voltage Range
/ VABCLH
/ VABCLL
ACL Gain
/ GACL
RGB Mute:0
R cut off:63
DC rest.:10
ABL Gain:11
Uni-Color:127
Color:0
Others:Preset
(1)Input a 100IRE Y signal with sync into Pin38&39.
(2)Decreasing the Pin28 voltage, measure the voltage at which
Pin20 output
begins/stops decreasing, that is "VABCLH" / "VABCLL".
(3)Measure the minimum amplitude of Pin20 output, that is VACLMIN.
(4)Calculate; "GACL"=20*log(VACLMIN/VWHITE)
T7
ABL Start Point
/ VABLP0
/ VABLP1
/ VABLP2
/ VABLP3
RGB Mute:0
R cut off:63
DC rest.:10
ABL Start Point:
00/01/10/11
ABL Gain:11
Uni-Color:127
Color:0
Others:Preset
(1)Input a 0IRE Y signal with sync into Pin38&39.
(2)For ABL Point 00/01/10/11, decreasing the Pin28 voltage,
measure the
voltage at which Pin20 output begins decreasing, that is
VABL1/VABL2/VABL3/VABL4.
(3)Calculate; "VABLP0"=VABL1-VABCLH
"VABLP1"=VABL2-VABCLH
"VABLP2"=VABL3-VABCLH
"VABLP3"=VABL4-VABCLH
T8
ABL Gain
/ VABLG0
/ VABLG1
/ VABLG2
/ VABLG3
RGB Mute:0
R cut off:63
DC rest.:10
ABL Gain:
00/01/10/11
Uni-Color:127
Color:0
Others:Preset
(1)Input a 0IRE Y signal with sync into Pin38&39.
(2)For ABL Gain 00/01/10/11, measure the DC level of picture
period at
Pin20
when
Pin28
voltage
is
VABCLL,
that
is
VABL5/VABL6/VABL7/VABL8.
(3)Calculate; "VABLG0"=VABL5-VBLACK
"VABLG1"=VABL6-VBLACK
"VABLG2"=VABL7-VBLACK
"VABLG3"=VABL8-VBLACK
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