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User’s Manual 60
Specifications
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.
Preset Timing Modes
Display Mode
Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
IBM, 640 x 480 31.469 59.940 25.175 -/-
IBM, 720 x 400 31.469 70.087 28.322 -/+
VESA, 640 x 480 43.269 85.008 36.000 -/-
VESA, 800 x 600 53.674 85.061 56.250 +/+
VESA, 1024 x 768 60.023 75.029 78.750 +/+
VESA, 1024 x 768 68.677 84.997 94.500 +/+
VESA, 1280 x 1024 79.976 75.025 135.00 +/+
VESA, 1280 x 1024 91.146 85.024 157.50 +/+
Horizontal Frequency
The time to scan one line connecting the right edge to the left edge of
the screen horizontally is called Horizontal Cycle and the inverse
number of the Horizontal Cycle is called Horizontal Frequency. Unit:
kHz
Vertical Frequency
Like a fluorescent lamp, the screen has to repeat the same image many
times per second to display an image to the user. The frequency of this
repetition is called Vertical Frequency or Refresh Rate. Unit: Hz