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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)： | 37/58頁 |
| 文件大?。?/td> | 526K |
| 代理商： | TB1254N |
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Ver3.7
00/01/28 42
Note
Items/Symbols
Bus conditoins
Measurement methods
C10
APC Control
Sensitivity (4.43MHz)
/
443
APC Control
Sensitivity (3.58MHz)
/
358
RGB Mute:0
Color
System:
100/010
Others:Preset
(1)Connect Pin43 to GND via a 1uF capacitor.
(2)Set Color System to 100(443PAL).
(3)Adjust Pin11 voltage so that the Pin13 output frequency is
4.433619MHz, that is V4APCCEN.
(4)Measure the Pin13 output frequency when Pin11 voltage is
V4APCCEN+100mV / V4APCCEN-100mV, that is F4APC+ / F4APC-.
(5)Calculate; "
443"=(F4APC+-F4APC-)/200
(6)Set Color System to 010(358NTSC).
(7)Adjust Pin11 voltage so that the Pin13 output frequency is
3.579545MHz, that is V3APCCEN.
(8)Measure the Pin13 output frequency when Pin11 voltage is
V3APCCEN+100mV / V3APCCEN-100mV, that is F3APC+ / F3APC-.
(9)Calculate; "
358"=(F3APC+-F3APC-)/200
C11
PAL ID Sensitivity
(Normal Mode)
/ VPALIDON
/ VPALIDOFF
PAL ID Sensitivity
(Low Mode)
/ VPALIDLON
/ VPALIDLOFF
NTSC ID Sensitivity
(Normal Mode)
/ VNTIDON
/ VNTIDOFF
NTSC ID Sensitivity
(Low Mode)
/ VNTIDLON
/ VNTIDLOFF
P/N ID Sens:0/1
Color System:
100/010
Y Mute:01
Uni-Color:127
RGB Mute:0
Others:Preset
(1)Set P/N ID Sens. to 0.
(2)Set Color System to 100(443PAL).
(3)Input a 4.43MHz PAL rainbow color-bar(300mVp-p,
burst:chroma=1:1) with sync into Pin38&43.
(4)Measure the burst amplitude at which Pin13 DC level changes
from low to high / from high to low, that is "VPALIDON" / "VPALIDOFF".
(5)Set Color System to 010(358NTSC).
(6)Input a 3.58MHz NTSC rainbow color-bar (286mVp-p,
burst:chroma=1:1) with sync into Pin38&43, and repeat (3), that is
"VNTIDON" / "VNTIDOFF".
(7)Set P/N ID Sens.to 1, repeat (2) ~ (6), that is "VPALIDLON" ,
"VPALIDLOFF" , "VNTIDLON" and "VNTIDLOFF".
C12
fsc Continuous Wave
Output Level
/ VCW
RGB Mute:00
Others:Preset
Measure the amplitude of Pin20 output, that is "VCW".
C13
Half Tone
Characteristics for C
/ GHTC
RGB Mute:0
Ysm Mode:0
Y Mute:01
Uni-Color:127
Others:Preset
(1)Input a 4.43MHz PAL rainbow color-bar(300mVp-p,
burst:chroma=1:1) with sync into Pin38&43.
(2)Supply Pin15 2V and measure the amplitude of Pin20 output,
that is VPBHTC.
(3)Calculate;"GHTC"=20*log(VPBHTC/VPBOUT)
C14
Sub-Color Control
Characteristics
/ SCOLMAX
/ SCOLMIN
RGB Mute:00
Y Mute:01
Uni-Color:127
Sub-Color:0
/16/32
Others:Preset
1)Input a signal(f0=100kHz,300mV) of following figure into
Pin38,44&45.
(2)Measure the Pin20 amplitude for Sub-olor 32/16/0, that is
VSCMAX / VSCLCEN/VSCMIN.
(3)Calculate; "SCOLMAX "=20*log(VSCMAX / VSCLCEN)
"SCOLMIN "=20*log(VSCMIN / VSCLCEN)
Amplitude V
0
Sinusoidal wave
Frequency f
0
pin38 input
pin16 input
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