Advantech IDK-1119R-35SXA1E User Manual page 37

Note 3 The luminance uniformity of 9 points is defined by dividing the maximum lumi-
nance values by the minimum test point luminance
Note 4 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 Backlight for
20 minutes in a windless room.
Note 5 Definition of response time, measured by WESTAR TRD-100A
The output signals of photo detector are measured when the input signals are
changed from "Full Black" to "Full White" (rising time), and from "Full White" to
"Full Black" (falling time), respectively. The response time is interval between
the 10% and 90% of amplitudes. Please refer to the figure as below.
31 IDK-1119R User Manual