ViewSonic PA504W Series User Manual page 45

Menu Option
Zoom
OverScan
3X Fast Input
Description
Magnifies the projected image and allows you to navigate the
image.
Adjusts the overscan rate from 0% to 5%.
NOTE:
This function is only available when a Composite Video or
HDMI input signal is selected.
This function is favorable to frame rate reducing. Quick
response time in native timing can be achieved. When enabled,
the following settings will return to factory preset values:
Aspect Ratio, V Keystone, Position, Zoom, OverScan.
NOTE:
This function is only available when a native timing input
signal is selected.
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