参数资料
型号: TB1245N
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP56
封装: PLASTIC, SDIP-56
文件页数: 53/101页
文件大小: 1490K
代理商: TB1245N
TB1245N
2001-07-26
55
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C)
SW MODE
NOTE
ITEM
S26
S1
S31
S33
S34
S39
S42
S44
S45
S51
MEASURING METHOD
C16
Demodulation
Output Residual
Higher Harmonic
ON
A
B
A
B
(1) Activate the test mode (S26-ON, Sub Add 02 ; 08h).
(2) Connect band pass filter (Q = 2), set to TV mode (fo = 600 kHz) with 0 dB attenuation.
(3) Set the crystal mode to conform to European, Asian system and set the gate to normal
status.
(4) Input 3N and 4N rainbow color bar signals having 100 mVp-p burst to pin 42 of the
chroma input terminal one after another.
(5) Measure higher harmonic (2fc = 7.16 MHz or 8.87 MHz) of 3N and 4N color bar signals
appearing in color difference signals of pin 36 (B-Y OUT) and pin 35 (R-Y OUT)
respectively, and express them as 3N-HCB / R and 4N-HCB / R.
C17
Color Difference
Output ATT
Check
(1) Activate the test mode (S26-ON, Sub Add 02 ; 08h).
(2) Connect band pass filter (Q = 2) and set bus data for the TV mode (fo = 600 kHz).
(3) Set the X’tal clock mode to conform to European, Asian system and set the gate to
normal status.
(4) Input 3N rainbow color bar signal whose burst is 100 mVp-p to pin 42 of the chroma
input terminal.
(5) Measure amplitude of color difference output signal of pin 36 (B-Y OUT) with 0 dB
attenuation set by the bus control. Set the amplitude of the color difference output of pin
36 (B-Y OUT) to 0 dB, and measure amplitude of the same with different attenuation of
2 dB, 1 dB and +1 dB set by the bus control.
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