Advantech IDK-1107WR-50WVB1 User Manual page 31

Note! 5-point luminance uniformity is defined by dividing the maximum lumi-
nance values by the minimum test point luminance
Minimum [L (1) ~ L (5)]
=
W5
Maximum [L (1) ~ L (5)]
Note!
Measurement method
The LCD module should be stabilized at given temperature for 20 min-
utes 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 stable, windless and dark room.
Note! Response time definition
25 IDK-1107WR-50WVB1 User Manual