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Display Modes
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.
SAMTRON 56E / 56V
Horizontal
Display Mode
Frequency (kHz)
Frequency (Hz)
IBM, 640 x 480
31.469
IBM, 720 x 400
31.469
VESA, 640 x 480
37.500
VESA, 640 x 480
43.269
VESA, 800 x 600
53.674
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
Vertical
Pixel Clock
Sync Polarity
(MHz)
(H/V)
59.940
25.175
-/-
70.087
28.322
-/+
75.000
31.500
-/-
85.008
36.000
-/-
85.061
56.250
+/+
28
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