ViewSonic VX800-3 Service Manual - Page 23

V-sync Tvs V-back porch Tvb Count num Tvd (V-total) V-front porch Tvf H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 2 4 22 23 625 628 1 1 Negative Positive Negative Positive 800 800 600 600 6 23 666 37 Positive Positive 800 600 3 21 625 1 Positive Positive 800 600 3 27 631 1 Positive Positive 800 600 6 6 29 29 806 806 3 3 Negative Negative Negative Negative 1024 1024 768 768 15 16 Signal name Symbo XGA XGA l H-frequency (kHz) 58.099 60.023 V-frequency (Hz) 72.082 75.029 Pixel rate (MHz) 78.084 78.750 H-sync Ths 136 96 H-back porch Thb 160 176 Count num (H-total) Thd 1344 1312 H- front porch Thf 24 16 V-sync Tvs 6 3 V-back porch Tvb 29 28 Count num (V-total) Tvd 806 800 V-front porch Tvf 3 1 H-sync. Polarity Negative Positive V-sync Polarity Negative Positive H-resolution (dots) 1024 1024 V-resolution (lines) 768 768 17 XGA 68.677 84.997 94.500 96 208 1376 48 3 36 808 1 Positive Positive 1024 768 18 SXGA 63.981 60.02 108 112 248 1688 48 3 38 1066 1 Positive Positive 1280 1024 19 HD-720P 45.000 60.00 74.250 40 270 1658 60 5 20 750 5 Negative Negative 1280 720 ViewSonic Corporation 29! Confidential - Do Not Copy VX800-3