ViewSonic VG910S Service Manual - Page 12

APPENDIX A : PRESET TIMING CHART Analog Mode Signal name H-frequency (kHz) V-frequency (Hz) Pixel rate (MHz) H-sync H-back porch Count num (H-total) H- front porch V-sync V-back porch Count num (V-total) V-front porch H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 1 2 3 4 5 6 7 TEXT TEXT symbol mode mode VGA MAC-II VESA-VGA VESA-VGA VESA-VGA 31.468 31.469 31.468 35.001 37.5 37.862 43.269 70.087 70.087 59.941 66.667 75 72.807 85.005 25.175 28.322 25.175 30.240 31.5 31.501 36.000 Ths 96 108 96 64 64 40 56 Thb 48 54 48 96 120 128 80 Thd 800 900 800 864 840 832 832 Thf 16 18 16 64 16 24 56 Tvs 2 2 2 3 3 3 3 Tvb 60 35 33 39 16 28 25 Tvd 449 449 525 525 500 520 509 Tvf 37 12 10 3 1 9 1 Positive Negative Negative Negative Negative Negative Negative Negative Positive Negative Negative Negative Negative Negative 640 720 640 640 640 640 640 350 400 480 480 480 480 480 Signal name H-frequency (kHz) V-frequency (Hz) Pixel rate (MHz) H-sync H-back porch Count num (H-total) H- front porch V-sync V-back porch Count num (V-total) V-front porch H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 8 IBM-8514 Symbol A 35.156 56.250 36.000 Ths 72 Thb 128 Thd 1024 Thf 24 Tvs 2 Tvb 22 Tvd 625 Tvf 1 Negative Negative 800 600 9 SVGA 37.879 60.317 40.000 128 88 1056 40 4 23 628 1 Positive Positive 800 600 10 SVGA 48.077 72.188 50.000 120 64 1040 56 6 23 666 37 Positive Positive 800 600 11 SVGA 46.875 75.000 49.500 80 160 1056 16 3 21 625 1 Positive Positive 800 600 12 13 14 SVGA MAC 16" XGA 53.674 85.061 56.250 64 152 1048 32 3 27 631 1 Positive Positive 800 600 49.725 74.5 57.283 64 224 1152 32 3 39 667 1 Negative Negative 832 624 48.363 60.004 65.000 136 160 1344 24 6 29 806 3 Negative Negative 1024 768 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 9