Acer AL1917L Service Manual page 13

(3) Definition of Response Time (T
Gray Level 255
100%
90%
Optical
Response
10%
0%
(4) Luminance, Chromaticity and CCT Measurement
Measurement System Setup:
The LCD module should be stabilized at given temperature for 15 minutes to avoid abrupt
temperature change during measuring. In order to stabilize the luminance, the measurement
should be executed after lighting Backlight for 15 minutes in a windless room.
LCD Module
LCD Panel
, T ) and Measurement Method:
R F
Gray Level 0
T
F
Center of the Screen
500 mm
T
R
Spectrometer
(Minolta CS1000T )
Light Shield Room
(Ambient Luminance < 2 lux)
13
Gray Level 255
Time