Acer AL2223WD AL2223WD Service Guide - Page 11

Timings The product has 34 memory modes in total. 26 modes are preset and 8 modes are user definable. MODE NO. 1 2 3 4 RESOLUTION 720 x 400 640 x 480 640x480 640 x 480 Dot clock(MHz) 28.321 25.175 30.24 31.5 f h H-Total ( us ) H-Sync ( us ) H-B-P ( us ) H-Active ( us ) H-F-P ( us ) 31.469kHz 31.78(900dots) 3.813(108dots) 1.907(54dots) 25.42(720dots) 0.636(18dots) 31.469kHz 31.778 (800 dots) 3.813 (96 dots) 1.907 (48 dots) 25.422 (640 dots) 0.636 (16 dots) 35.0kHz 28.571(864 dots) 2.116 (64 dots) 3.175 (96 dots) 21.164 (640 dots) 2.116 (64 dots) 37.861kHz 26.413 (832 dots) 1.270(40 dots) 4.064(128 dots) 20.317(640 dots) 0.762(24 dots) f v V-Total (ms ) V-Sync ( ms ) V-B-P (ms ) V-Active ( ms ) V-F-P ( ms ) SYNC. H/V POLARITY SEP . SYNC 70Hz(70.087) 14.27(449 lines) 0.064(2 lines) 1.112(35 lines) 12.71(400 lines) 0.384(12 lines) -/+ Y 60Hz (59.940) 66.7 HZ (66.667) 16.683 (525 lines ) 15.000 (525 lines ) 0.064 (2 lines ) 0.086 (3 lines ) 1.049 (33 lines ) 1.114 (39 lines ) 15.253 (480 lines ) 13.714 (480 lines ) 0.317 ( 10 lines) 0.086 (3 lines ) - / - +/+ Or -/- Y Y 72.809Hz 13.735(520 lines) 0.079(3 lines) 0.739(28 lines) 12.678(480 lines) 0.237(9 lines) -/- Y - 11 -