Acer XB270HU Service Manual page 13

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Note 3 Definition of Response Time (T , T ):
R F
The output signals of photo detector are measured when the input signals are changed from "Full Black" to
"Full White" (rising time, TrR), and from "Full White" to "Full Black" (falling time, TfF), respectively. The
response time is interval between the 10% and 90% (1 frame at 60 Hz) of amplitudes.
TrR + TrF = 5 msec (typ.).
TrR + TfF = 12 msec (typ.).
Algorithm:┃Gray Level A – Gray Level B┃≧16, then the average gray to gray response time is 2ms,(F= 60
Hz).
Note 4 Luminance uniformity of these 9 points is defined as below and measured by TOPCON SR-3