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If the signal transferred from the computer is the same as the following Preset Timing Modes, the
screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the
power LED is on. Refer to the video card manual and adjust the screen as follows.
Table 1. Preset Timing Modes
Display Mode
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
IBM, 640 x 350 31.469 70.086 25.175 +/-
IBM, 640 x 480 31.469 59.940 25.175 -/-
IBM, 720 x 400 31.469 70.087 28.322 -/+
MAC, 640 x 480 31.470 66.667 30.240 -/-
MAC, 832 x 624 49.726 74.551 49.500 +/+
VESA, 640 x 480 37.500 75.000 31.500 -/-
VESA, 640 x 480 37.861 75.809 31.500 -/-
VESA, 640 x 480 43.269 85.008 36.000 -/-
VESA, 800 x 600 35.156 56.250 36.000 +,-/+,-
VESA, 800 x 600 37.879 60.317 40.000 +/+
VESA, 800 x 600 46.875 75.000 49.500 +/+
VESA, 800 x 600 48.077 72.188 50.000 +/+
VESA, 800 x 600 53.674 85.000 56.250 +/+
VESA, 1024 x 768 48.363 60.004 65.000 -/-
VESA, 1024 x 768 56.476 70.069 75.000 -/-
VESA, 1024 x 768 60.023 75.029 78750 +/+
VESA, 1024 x 768 68.677 85.997 94.500 +/+
VESA, 1280 x 768 47.700 60.000 80.136 -/+
Table 2. Reduced Blinking Timing Mode
Display Mode
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
SXGA, 1280 x 1024 63.194 59.957 91.000 +,-
Preset Timing Modes
SyncMaster 323T