Advantech IDK-1110WP Series User Manual page 31

Note2 5 points position
Note3 5-point luminance uniformity is defined by dividing the maximum luminance
values by the minimum test point luminance
=
W5
Note4 Measurement method
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 lighting the backlight for 20 minutes in a sta-
ble, windless and dark room.
Minimum [L (1) ~ L (5)]
Maximum [L (1) ~ L (5)]
25 IDK-1110WP User Manual