Samsung LS27B971DS-ZA - Manual (Page 61)

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Resolution
Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Clock frequency
(MHz)
Sync Polarity
(H/V)
MAC, 1152 x 870 68.681 75.062 100.000 -/-
VESA, 1280 x 800 49.702 59.810 83.500 -/+
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 +/+
VESA, 1440 x 900 55.935 59.887 106.500 -/+
VESA, 1600 x 1200 75.000 60.000 106.500 +/+
VESA, 1680 x 1050 65.290 59.954 146.250 -/+
VESA, 1920 x 1200 74.556 59.885 193.250 -/+
VESA, 2560 x 1440(RB) 88.787 59.951 241.500 +/-
Horizontal Frequency
The time required to scan a single line from the left to the right side of the screen is called
a horizontal cycle. The reciprocal number of a horizontal cycle is called horizontal frequency.
Horizontal frequency is measured in kHz.
Vertical Frequency
Repeating the same picture dozens of times per second allows you to view natural pictures.
The repeat frequency is called "vertical frequency" or "refresh rate" and is indicated in Hz.
Specifications