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Fixed pixel displays — selecting the optimum resolution and refresh rate
Display devices that are based on LCD, DLP, D-ILA, and plasma technology have a
specific number of pixels, a native resolution. These displays typically can show
higher or lower resolution signals, but can only do so by scaling the image up or
down to the native resolution. To avoid additional image scaling by the display
(and more processing is inherently bad for image quality), it is important to know
your display’s native resolution.
Check the display’s operation manual to determine its native resolution. Set the
scaler to match this native resolution. The scaler’s refresh rate should be set to 60
Hz for most LCD, plasma, D-ILA, and DLP projectors.
Higher refresh rates are not recommended for these display technologies. They
usually do not improve the image and may cause compatibility problems.