ViewSonic VG910S Service Manual - Page 25

5.2.2 Video alignment. 5.2.1.1 Preset condition. 5.2.1.1.1 Setting the contrast to 70%, brightness to 100%. 5.2.1.1.2 Input 1280x1024 / 60Hz, 16 gray pattern (input level 100IRE 0.7Vp-p), then press "RGB RESET".9300K / 6500K / 5400K / 5000K, R G B offset preset as below: 9300K 6500K 5400K 5000K Analog DVI Analog DVI Analog DVI Analog DVI R sub-contrast 128 128 128 128 128 128 128 128 G sub-contrast 128 128 128 128 128 128 128 128 B sub-contrast 128 128 128 128 128 128 128 128 5.2.1.2 9300K alignment: 5.2.1.2.1 Input 1280x1024 / 60Hz & full white pattern at 100IRE. 5.2.1.2.2 Adjust R, G, and B sub-contrast to meet following chromaticity spec: 9300K → x = 0.283 ± 0.005, y = 0.298 ± 0.005, Y > 155cd/m2 (Both analog & DVI). 5.2.1.3 6500K alignment: 5.2.1.3.1 Input 1280x1024 / 60Hz & full white pattern at 100IRE. 5.2.1.3.2 Adjust R, G and B sub-contrast to meet following chromaticity spec: 6500°K → x = 0.313 ±0.005, y = 0.329 ± 0.005, Y > 190cd/m2 (Both analog & DVI). 5.2.1.4 5400K alignment: 5.2.1.4.1 Input 1280x1024 / 60Hz & full white pattern at 100IRE. 5.2.1.4.2 Adjust R, G, and B sub-brightness to meet following chromaticity spec: 5400K → x = 0.335 ± 0.005, y = 0.350 ± 0.005, Y > 180cd/m2 (Both analog & DVI). 5.2.1.5 5000K alignment: 5.2.1.5.1 Input 1280x1024 / 60Hz & full white pattern at 100IRE. 5.2.1.5.2 Adjust R, G and B sub-contrast to meet following chromaticity spec: 5000°K → x = 0.346 ±0.005, y = 0.359 ± 0.005, Y > 180cd/m2 (Both analog & DVI). 5.2.1.6 64grays & 16grays pattern check: 5.2.1.6.1 Input 1280x1024 / 60Hz & 64 grays pattern at 100IRE, adjust brightness 100%, and contrast 70%. 5.2.1.6.2 9300K / 6500K / 5400K / 5000K, the 64 grays can 2steps saturation. 5.2.1.6.3 Input 1280x1024 / 60Hz & 16 grays pattern at 100IRE, adjust brightness 100%, and contrast 100%. 5.2.1.6.4 9300K / 6500K / 5400K / 5000K, the 16 grays only had 4 grays can saturation. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 22