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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)： | 44/58頁 |
| 文件大?。?/td> | 526K |
| 代理商： | TB1254N |
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Ver3.7
00/01/28 49
Note
Items/Symbols
Bus conditoins
Measurement methods
D12
Horizontal
Position
Variable Range
/
PHHPOS
H
Position:0/31
Others:Preset
(1)Input a composite sync signal into Pin38.
(2)Changing BUS data of “Horizontal Position” from 0 to 31,
measure "
PHHPOS" according to the following figure.
FBP in(Pin30)
(00)
(1F)
PH
HPOS
D13
AFC-2 Pulse
Threshold Level
/ VAFC2
All:Preset
(1)Input a composite sync signal into Pin38.
(2)Decreasing the FBP high level, measure the DC level at which
H OUT phase changes against Sync Out phase, that is "VAFC2".
D14
H-BLK Pulse
Threshold Level
/ VHBLK
All:Preset
(1)Input a composite sync signal into Pin38.
(2)Increasing the FBP high level, measure the DC level at which
H blanking begins to work, that is "VHBLK".
D15
Black Peak Det. Stop
Period (H)
/ PHBPDET
/ WBPDET
TEST:00001000
Black Stretch:01
Others:Preset
(1) Input a composite sync signal into Pin38.
(2) According to the following figure, measure "PHBPDET" &
"WBPDET".
Sync in(Pin38)
H AFC(Pin29)
SCP OUT(Pin30)
63.5s
4.7s
PH
HPOS
W
BPDET
4.3V
0V
0.25V
D16
Gate Pulse Start
Phase
/ PHGP
Gate Pulse Width
/ WGP
All:Preset
(1)Input a composite sync signal into Pin38.
(2)According to the following figure, measure "PHGP" & "WGP".
Sync in(Pin38)
H AFC(Pin29)
SCP OUT(Pin30)
63.5s
4.7s
PH
GP
W
GP
4.3V
0V
0.25V
D17
Vertical Oscillation
Start Voltage
/ VVON
All:Preset
(1)Let Pin1/14/37/42 be open.
(2)Increasing Pin31 voltage, measure the voltage at which V
Ramp signal
(3)appears at Pin24, that is "VVON".
D18
Vertical Free-run
Frequency
/ FVAUFR50
/ FVAUFR60
/ FV50FR
/ FV60FR
V-Freq:
000/001/010
Others:Preset
(1)Input a 50Hz composite sync signal into Pin38.
(2)Set V-Freq to 000.
(3)For no input, measure the frequecy of V Ramp at Pin22, that is
"FVAUFR50".
(3) Input a 60Hz composite sync signal into Pin38.
(4) Repeat (2)&(3), that is “FVAUFR60”
(5) Set V-Freq. To 001/101, repeat (2), that is "FV50FR" / "FV60FR".
D19
Gate Pulse V-
Masking Period
/ T50GPM
/ T60GPM
All:Preset
(1)Input a 50Hz/60Hz composite sync signal into Pin38.
(2)Measure "T50GPM" / "T60GPM" at Pin30. (cf. Fig.D21)
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