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參數(shù)資料
| 型號(hào)： | TA1204AF |
| 廠商： | Toshiba Corporation |
| 英文描述： | ャ CORRECTION IC FOR LCD TV |
| 中文描述： | ャ校正集成電路液晶電視 |
| 文件頁數(shù)： | 17/25頁 |
| 文件大?。?/td> | 575K |
| 代理商： | TA1204AF |
TA1204AF
2001-02-07 17/25
Note 22:
Typical
γ
characteristics, inter-axis deviation, polarity difference
Test condition 4 (CP mode)
Input :
X In1
Test signal 3
Input test signal 3 including black, white, and 60% levels to input A (X In1). Measure the voltage
difference (set at 1) between the white and black levels and the voltage difference (set at 2) between
the 60% input and black levels in the waveform of an output pin (pin 21 when X = B, pin 19 when X
= G, and pin 14 when X = R). Obtain a voltage difference ratio of 2:1. Repeat for the positive and
negative polarity outputs.
Repeat this measurement replacing B, G, and R as the X-axis.
Note 23:
γ
characteristic variable range, maximum and minimum-characteristic variable range, inter-axis deviation
Test condition 4 (CP mode)
Input :
X In1
Test signal 3
VR44 : Max / Min (pin 44
←
0V / 5V)
Input test signal 3 including black, white, and 60% levels to input A (X In1). Change SW
44
from a to
b, adjust VR44 and set the voltage applied to pin 44 at 0V, thereby maximizing the
γ
control.
Measure the voltage difference (set to 1) between the white and black waveform levels for an output
pin (pin 21 when X = B, pin 19 when X = G, and pin 14 when X = R) and the voltage difference (set
at 2) between the 60% input and black levels. Obtain a voltage difference ratio of 2:1 and set this as
the maximum value for the
γ
characteristics. Next, adjust VR44 in the opposite direction, set the
voltage applied to pin 44 to 5V, and thus minimize the
γ
control. Obtain a voltage difference ratio of
2:1 as for the measurement of the maximum value, and set this as the minimum value of the
γ
characteristics.
Repeat this measurement replacing B, G, and R as the X-axis.
Note 24:
γ
fine adjustment characteristic variable range, maximum and minimum
γ
fine adjustment characteristic
variable ranges, inter-axis deviation
Test condition 4 (CP mode)
Input :
X In1 (X = B or R)
Test signal 3
X = B : VR43
: Max / Min (pin 43
←
5V / 2.5V)
X = R : VR1
: Max / Min (pin 1
←
5V / 2.5V)
When measuring channel B, change SW
43
from OFF to ON, and input test signal 3 including black,
white, and 60% levels to input A (B In1). Turn VR43 fully, set the voltage applied to pin 43 at 5V, and
thus maximize the
γ
control.
Measure the voltage difference (fixed at 1) between white and black waveform levels for output pin
21 and the voltage difference (fixed at 2) of 60% input and black levels. Obtain a voltage difference
ratio of 2:1 and set this as the maximum value of the
γ
characteristics. Next, set the voltage applied
to pin 43 to 2.5V by turning VR43 fully in the opposite direction, thereby minimizing the
γ
characteristics. Obtain a voltage difference ratio of 2:1 and thereby minimize the value of the
γ
characteristics in the same way the maximum value was measured. When measuring channel R (X =
R) change SW
1
from OFF to ON, turn VR1 clockwise and anticlockwise with R In1 as the input pin,
and thus measure output pin 14 in the same way as channel B.
Note 25:
Typical amplitude of common electrode signals
Test condition 4
Input : no signal
Measure the voltage difference between H and L levels in the output waveform of pin 10.
Note 26:
Amplitude of common electrode signals, maximum variable range, amplitude of common electrode
signals, minimum variable range
Test condition 4
Input : no signal
Measure the voltage difference between H and L waveform levels for pin 10 output when terminal 11
is shorted to GND, and thus set this as the maximum amplitude.
Measure the voltage difference between the H and L levels for the output waveform of pin 10 when
pin 11 is shorted with V
CC
(%V), and set this as the minimum amplitude.
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