Display Modes
28
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.
IBM, 640 x 480
31.469
59.940
25.175
-/-
IBM, 720 x 400
31.469
70.087
28.322
-/+
VESA, 640 x 480
37.500
75.000
31.500
-/-
VESA, 640 x 480
43.269
85.008
36.000
-/-
VESA, 800 x 600
53.674
85.061
56.250
+/+
VESA, 1024 x 768
68.677
84.997
94.500
+/+
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
Display Mode
Horizontal
Frequency (kHz)
Vertical
Frequency (Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
SAMTRON 76DF
