Acer AL1731 AL1731 Service Guide - Page 13

Supported Timing TIMING FH(KH SYNC TOTAL ACTIVE Z) FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) 640x480 31.469 - VGA-480 59.94 - 640x480 37.861 - VESA-480-72Hz 72.809 - 640x480 37.5 - VESA-480-75Hz 75 - 720x400 31.469 - VGA-400-TEXT 70.087 + 800x600 37.879 + VESA-600-60Hz 60.317 + 800x600 48.077 + VESA-600-72Hz 72.188 + 800x600 46.875 + VESA-600-75Hz 75 + 1024x768 48.363 - XGA 60.004 - 1024x768 56.476 - VESA-768-70Hz 70.069 - 1024x768 60.023 + VESA-768-75Hz 75.029 + 1024x1024 64 + VESA-1024-60Hz 60 + 1280x1024 80 + VESA-1024-75Hz 75 + 800 525 832 520 840 500 900 449 1056 628 1040 666 1056 625 1344 806 1328 806 1312 800 1688 1066 1688 1066 640 480 640 480 640 480 720 400 800 600 800 600 800 600 1024 768 1024 768 1024 768 1280 1024 1280 1024 SYNC FRONT BACK PIXEL WIDTH (DOT/LINE) 96 2 40 3 64 3 108 2 128 4 120 6 80 3 136 6 136 6 96 3 112 3 144 3 PORCH (DOT/LINE) 16 10 16 1 16 1 18 12 40 1 56 37 16 1 24 3 24 3 16 1 48 1 16 1 PORCH (DOT/LINE) 48 33 120 20 120 16 54 35 88 23 64 23 160 21 160 29 144 29 176 28 248 38 248 38 FOREQ.(MHZ) 25.175 31.5 31.5 28.322 40 50 49.5 65 75 78.75 108 135 If the input timing is not a supported timing listed above but within the supported frequency range (Horizontal: 80KHz,Vertical: 75Hz), this monitor will select a closest mode instead. But the display quality may not be optimized. If the input timing over the supported frequency range, a message "Input Signal Out of Range" will be shown. 2.4.4 Support Modes There will be 12 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor. Analog R, G, B. MAX supports range 1280x1024 75Hz. Digital TMDS MAX supports range 1280x1024 60Hz. 12