Samsung 723N User Manual (user Manual) (ver.1.0) (English) - Page 39

Information, Display Mode, Horizontal, Frequency, Vertical, Pixel Clock, Sync Polarity

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Preset Timing 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. Table 1. Preset Timing Modes Display Mode Horizontal Frequency (kHz) IBM, 640 x 350 31,469 IBM, 640 x 480 31,469 IBM, 720 x 400 31,469 MAC, 640 x 480 35,000 MAC, 832 x 624 49,726 MAC, 1152 x 870 68,681 VESA, 640 x 480 37,861 VESA, 640 x 480 37,500 VESA, 800 x 600 35,156 VESA, 800 x 600 37,879 VESA, 800 x 600 48,077 VESA, 800 x 600 46,875 VESA, 1024 x 768 48,363 VESA, 1024 x 768 56,476 VESA, 1024 x 768 60,023 VESA, 1152 x 864 67,500 VESA, 1280 x 960 60,000 VESA, 1280 x 1024 63,981 VESA, 1280 x 1024 79,976 Vertical Frequency (Hz) 70,086 59,940 70,087 66,667 74,551 75,062 72,809 75,000 56,250 60,317 72,188 75,000 60,004 70,069 75,029 75,000 60,000 60,020 75,025 Pixel Clock (MHz) 25,175 25,175 28,322 30,240 57,284 100,00 31,500 31,500 36,000 40,000 50,000 49,500 65,000 75,000 78,750 108,000 108,000 108,000 135,000 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 the Horizontal Cycle and the inverse number of the Horizontal Cycle is called the 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 the Vertical Frequency or Refresh Rate. Unit: Hz

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Preset Timing 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.
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
35,000
66,667
30,240
-/-
MAC, 832 x 624
49,726
74,551
57,284
-/-
MAC, 1152 x 870
68,681
75,062
100,00
-/-
VESA, 640 x 480
37,861
72,809
31,500
-/-
VESA, 640 x 480
37,500
75,000
31,500
-/-
VESA, 800 x 600
35,156
56,250
36,000
+/+
VESA, 800 x 600
37,879
60,317
40,000
+/+
VESA, 800 x 600
48,077
72,188
50,000
+/+
VESA, 800 x 600
46,875
75,000
49,500
+/+
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
78,750
+/+
VESA, 1152 x 864
67,500
75,000
108,000
+/+
VESA, 1280 x 960
60,000
60,000
108,000
+/+
VESA, 1280 x 1024
63,981
60,020
108,000
+/+
VESA, 1280 x 1024
79,976
75,025
135,000
+/+
Horizontal Frequency
The time to scan one line connecting the right edge to the left edge of
the screen horizontally is called the Horizontal Cycle and the inverse
number of the Horizontal Cycle is called the 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 the Vertical Frequency or Refresh
Rate. Unit: Hz