Acer AT2001 AT2001 Service Guide - Page 13

Optical Characteristics Optical characteristics are determined after the unit has been 'ON' and stable for arround 2Hrs in a dark environment at 25 C. The values specified are at an approximate distance 50cm from the LCD surface at a viewing angle of F and q equal to 0 . FIG. 1 Optical Characteristic Measurement Equipment and Optical Stage(x,y) LCD Module Pritchard 880 or equivalent 500mm Ta:25 2 C, VLCD:5.0V, fV:60Hz, Dclk:80MHz, Luminance Ratio:100% Parameter Viewing L/R angle U range D Contrast ratio Response time Rise time r Fall time d Gray to gray Chromaticity of White (CIE 1931) Chromaticity of Red (CIE 1931) Chromaticity of Green (CIE 1931) Chromaticity of Blue (CIE 1931) Luminance of white Note4 White Uniformity Symbol TOP BUTTON LEFT RIGHT n Conditi on CR>10 =0 Min. 55 55 65 65 400 Wx 0.243 Wy 0.262 Rx 0.612 Ry 0.307 Gx 0.254 Gy 0.585 Bx 0.111 By 0.038 350 Typ. 60 60 80 80 500 16 5 11 16 0.273 0.292 0.642 0.337 0.284 0.615 0.141 0.068 450 Max. Unit Deg. Deg. Deg. Deg ms ms ms ms 0.303 0.322 0.672 0.367 0.314 0.645 0.171 0.098 Cd/m2 Remark Note 3,6,8 Note3,4,6 Note 5 Note4,7 70 % Note 3,9 The measurement shall be executed 30 minutes after lighting at rating.