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How are video bandwidth, horizontal scanning frequency (line rate) and vertical scanning frequency (refresh rate) related?

April 26, 2017bandwidth Frequency horizontal line rate Refresh scanning vertical video

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How are video bandwidth, horizontal scanning frequency (line rate) and vertical scanning frequency (refresh rate) related?

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A. When you configure the video card for your system, you first select the resolution you want to work at. A monitor’s video bandwidth at that resolution determines the maximum horizontal and vertical scanning frequencies. Monitors with wider video bandwidths can, in general, allow for faster horizontal scanning frequencies, and thus provide faster refresh rates. When selecting a monitor, look for one that will support a vertical scanning frequency (i.e. refresh rate) of at least 75 Hz at the resolution you wish to work at.