Video bandwidth

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The video bandwidth indicates how the quality of a video technology device is to be assessed. It indicates the highest signal frequency that can be processed with a maximum attenuation of 3 dB . This information is often used for monitors or video recorders .

The typical bandwidth of a VHS - VCR is for. B. 3-4 MHz ( S-VHS ).

With a monitor, the video bandwidth must be greater than the pixel clock to get a sharp picture:
Video bandwidth> = number of lines * number of columns * vertical frequency

The gross number is to be used for the number of rows and columns. This is always greater than the number of visible rows or columns. The factor gross number of lines * gross number of columns / (visible number of lines * visible number of columns) depends on the resolution and the transmission technology, typical values ​​are e.g. B. with VGA 1.3 - 1.4.