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2 hints for pixel clock and pixel phase, Monitor setup – IHSE USA 234 Series VTO2/VRO2 KVM-Extender User Manual

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MONITOR SETUP

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5.2 Hints for Pixel Clock and Pixel Phase

Why do you need to adjust Pixel clock and Pixel phase (always in this order) when you are
using a TFT screen?

This can be explained by means of a 'virtual' reduced system, which has only a few pixels and
lines displaying a burst pattern (see above). The system would look like:

To display an analog picture correctly, the TFT must know Pixel Clock and Pixel Phase. To
define these, it needs to calculate:

On the Oscilloscope

The exact center of each Pixel...

Wrong Pixel Phase

... the black 'shoulder' (the beginning of the
picture), the number of pixels per line and
the Pixel Phase (Middle of each Pixel)

Wrong Pixel Clock

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