Advantech IDK-2112 Series, User Manual, Page: 38 / 41

IDK-2112 User Manual 32
Note 5 Measurement Setup:
The LCD module should be stabilized at given temperature for 20 minutes to
avoid abrupt temperature change during measuring. In order to stabilize the
luminance, the measurement should be executed after the Backlight has
been on for 20 minutes in a windless room.
Note 6 Definition of White Variation (

W):
Measure the luminance of gray level 255 at 5 points