Akai LCT32AD Service Manual page 103

Note (6) Measurement Setup:
The LCD module should be stabilized at given temperature for 1 hour to avoid abrupt temperature
change during measuring. In order to stabilize the luminance, the measurement should be
executed after lighting Backlight for 1 hour in a windless room.
LCD Module
Note (7) Definition of White Variation (δW):
Measure the luminance of gray level 255 at 5 points
δW = Maximum [L (1), L (2), L (3), L (4), L (5)] / Minimum [L (1), L (2), L (3), L (4), L (5)]
W/4
W W/2
3W/4
LCD Panel
Center of the Screen
Horizontal Line
D/4
1
3
Active Area
101／129
Display Color Analyzer
(Minolta CA210)
Light Shield Room
(Ambient Luminance < 2 lux)
D
D/2 3D/4
2
5
4
: Test Point
X
X=1 to 5