Acer AL1916 Service Manual page 14

Optical characteristics measurement setup
Notes 5) Definition of Luminance of White : measure the luminance of white at center point.
Notes 6)Definition of 9 points brightness uniformity (Measuring points: Refer to the Note 5)
AU
B =
UNI
Samsumg
B =
UNI
Bmax: Maximum brightness
Bmin: Minimum brightness
Notes 7) Definition of Flicker level
=  x 100 %
F
♦ One maximum value of three estimated values.
♦ For this test ,an LMD(Light Measurement Device)is needed with adequate response time
to track any visible rate flicker component and with a voltage level output proportional
To luminance intensity.
♦
Test Pattern: For dot inversion Driving(Gray levels of foreground dots on the test panel
Are G22,G32,and G45)
Bmin
 X 100%
Bmax
Bmax-Bmin
 X 100%
Bmax
Flicker Voltage
pp
LMD Voltage
dc
- 14 -