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Thursday, January 15, 2009

Video cabling approaches

Video cabling approaches are very interesting area for s display manufacturer. While cabling, lower impedance ground connections always possess higher system noise immunity. This naturally reduces the need to add system noise filters to the video cabling for filtering out the system noise that by bad luck reduces the display image quality and resolution. Now let us discuss the design of system noise filters and spectrum analyzers. They are often utilized for the distinguishing particular system noise frequencies that reduce the image quality of displays.
The negative part of filters is that it introduces a reactance which causes an impedance change at the point in the video cable where the filter connects to the video signal path, thus producing a certain appreciable amount of video signal degradation. By the usage of noise filters we can expect improvement. System noise filters can reduce the display system image quality, but only to a minimum level than the system noise that they filter out.This categorically establishes the need to put into operation lesser impedance grounding techniques, before introducing filtering technology into the RGB video cabling.

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