Samsung 794MB User Manual (user Manual) (ver.1.0) (English) - Page 108

Like a fluorescent lamp, the screen has to repeat the same image

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Display Mode VESA, 640 x 480 VESA, 1024 x 768 VESA, 1280 x 1024 Horizontal Frequency (kHz) 37.500 68.700 80.000 Vertical Frequency (Hz) 75.000 85.000 75.000 Pixel Clock (MHz) 31.500 94.500 135.00 Sync Polarity (H/V) -/+/+ +/+ 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

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Display Mode
Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
VESA, 640 x 480
37.500
75.000
31.500
-/-
VESA, 1024 x 768
68.700
85.000
94.500
+/+
VESA, 1280 x 1024
80.000
75.000
135.00
+/+
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