Samsung FT874 31.5" 16:9 4K VA Monitor - Manual (Page 39)

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Resolution
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
Port
HDMI IN DP IN
VESA, 1280 x 1024 63.981 60.020 108.000 +/+ O O
VESA, 1280 x 1024 79.976 75.025 135.000 +/+ O O
VESA, 1440 x 900 55.935 59.887 106.500 -/+ O O
VESA, 1600 x 900 60.000 60.000 108.000 +/+ O O
VESA, 1680 x 1050 65.290 59.954 146.250 -/+ O O
VESA, 1920 x 1080 67.500 60.000 148.500 +/+ O O
VESA, 2560 x 1440 88.787 59.951 241.500 +/- O O
VESA, 3840 x 2160 133.313 59.997 533.250 +/- - O
CEA, 3840 x 2160 67.500 30.000 297.000 +/+ O -
CEA, 3840 x 2160 135.000 60.000 594.000 +/+ O -
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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.
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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.
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This product can be set to only one resolution for each screen size to obtain the optimum picture quality due to the nature of the panel. Using a resolution other than the specified resolution may degrade the picture quality.
To avoid this, it is recommended that you select the optimum resolution specified for your product.
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Some resolutions listed in the table above may not be available depending on graphics card specifications.