參數(shù)資料
型號(hào)： TB1261F
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 43/66頁
文件大小： 1538K
代理商： TB1261F
TB1261F/TB1262F
2002-6-30 48 / 66
TEXT
TEXT STAGE
STAGE
STAGE (RGB Mute:0 / RGB cut off:128 / DC rest.:2(100%) / WPS:1(off))
Note
Items/Symbols
Bus
Bus conditions
conditions
Measurement methods
T1
V-BLK Pulse Output
Level
/ VVBLK
H-BLK Pulse Output
Level
/ VHBLK
All: Preset
(1) Input a composite sync signal into Pin61.
(2) Measure the DC level of V/H blanking period at Pin14, that
is
"VVBLK" / "VHBLK".
T2
RGB Output Black
Level (0IRE DC)
/ VBLACK
RGB Mute:0
Color:0
B cut off:128
DC rest.:2(100%)
Others: Preset
(1) Input a 0(IRE) Y signal with sync into Pin61.
(2) Measure the DC level of picture period at Pin14, that is
"VBLACK".
T3
RGB Output White
Level(100 IRE AC)
/ VWHITE
RGB Mute:0
B cut off:128
DC rest.:2(100%)
Uni-Color:127
Color:0
WPS:1(off)
Others: Preset
(1) Input a 100(IRE)(=0.7Vp-p) Y signal with sync into Pin61.
(2) Measure the amplitude from 0 to 100IRE at Pin14, that is
"VWHITE".
T4
Cut-off Voltage
Variable Range
/ ΔVCUT+
/ ΔVCUT-
RGB Mute:0
DC rest.:2(100%)
B Cut Off:0/255
Color:64 Brt; 64
Others: Preset
(1) Input a 0(IRE) Y signal with sync into Pin61.
(2) Measure the DC level of picture period at Pin14 for B
Cut-off:255/0 , that is VCUTMAX / VCUTMIN.
(3) Calculate;
"
Δ
VCUT+"=VCUTMAX-VBLACK
"
Δ
VCUT-"=VCUTMIN-VBLACK
T5
Drive Control
Variable Range
/ GDR+
/ GDR-
RGB Mute:0
DC rest.:2(100%)
B Drive:0/127
Uni-Color:127
Color:0
WPS:1(OFF)
Others: Preset
(1) Input a 100(IRE) (=0.7Vp-p) Y signal with sync into Pin61.
(2) Measure the amplitude from 0 to 100IRE at Pin14 for B
drive127/0, that is VDRMAX / VDRMIN.
(3) Calculate; "GDR+"=20*log(VDRMAX/VWHITE)
"GDR-"=20*log(VDRMIN/VWHITE)
T6
ABCL Control
Voltage Range
/ VABCLH
/ VABCLL
ACL Gain
/ GACL
RGB Mute:0
B cut off:128
DC rest.:2(100%)
ABL Gain:3
Uni-Color:127
Color:0
WPS:1(OFF)
Others: Preset
(1) Input a 100(IRE) (=0.7Vp-p) Y signal with sync into Pin61.
(2) Decreasing the Pin31 voltage, measure the voltage at which
Pin14 output begins/stops decreasing, that is "VABCLH" /
"VABCLL".
(3) Measure the minimum amplitude of Pin14 output, that is
VACLMIN.
(4) Calculate; "GACL"=20*log(VACLMIN/VWHITE)
T7
ABL Start Point
/ VABLP0
/ VABLP1
/ VABLP2
/ VABLP3
RGB Mute:0
B cut off:128
DC rest.:2(100%)
ABL Start Point:
0/1/2/3
ABL Gain:3
Uni-Color:127
Color:0
WPS:1(OFF)
Others: Preset
(1) Input a 0(IRE) Y signal with sync into Pin61.
(2) For ABL Point 0/1/2/3, decreasing the Pin31 voltage,
measure the voltage at which Pin14 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
B cut off:128
DC rest.:2(100%)
ABL Gain:
00/01/10/11
Uni-Color:127
Color:0
WPS:1(OFF)
Others: Preset
(1) Input a 0(IRE) Y signal with sync into Pin61.
(2) For ABL Gain 0/1/2/3, measure the DC level of picture
period at Pin14 when Pin31 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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