Acer AL1703, Руководство по обслуживанию

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10
(2) Definition of Contrast Ratio (CR):
The contrast ratio can be calculated by the following expression and figure
below.
Contrast Ratio (CR) = L255 / L0
L255: Luminance of gray level 255
L 0: Luminance of gray level 0
CR = CR (5)
CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note
(5).
Definition of luminance measured points and Brightness Uniformity:
Luminance of center point: L=L(5)
Brightness Uniformity Measurement points: Five specified points 1-5
Formula: Maximum [L (1), L (2), L (3), L (4), L (5)]/Minimum [L (1), L (2), L (3), L (4),
L (5)]
(3) Definition of Response Time (T
R
, T
F
):
Active area
Vertical Line
N
umber
Horizontal Line Number
Horizontal Line Number [pixel]
: test point
X=1 to 5
5
1 2
3
0
320 640
960
1280
0
256
512
768
1024
X
4
100%
90%
10%
0%
Gray Level 255
Gray Level 0
Gray Level 255
Time
T
R
Optical
Response
T
F