Acer AL2216W AL2216W Service Guide - Page 12
Definition of Response Time T, and Measurement Method, Luminance, Chromaticity and CCT Measurement - backlight
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(3) Definition of Response Time (TR, TF) and Measurement Method: 100% 90% Gray Level 255 Optical Response 10% 0% Gray Level 0 TR 66.67ms Gray Level 255 Time TF 66.67m (4) Luminance, Chromaticity and CCT Measurement 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. 12