Digital Projection iVision50 series, User Manual

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5.6.2 Picture > Advanced sub menu
horizontal position : Shifts the image sideways (VGA only)
vertical position: Shifts the image up or down (VGA only)
phase : Adjust for stable image. A jittery image may appear with certain VGA sources.
You may also press the AUTO button on the keypad or remote control
to optimize.
frequency: Adjust image width. An incorrect setting may produce vertical, unstable bands
in the image, and parts of the image may not be displayed on screen. Push the
AUTO button to find a correct setting, or manually adjust the frequency until the
vertical bands disappear. Frequency adjusts the pixel clock sampling frequency
color space: Enables selecting between Auto, RGB, YCbCr 601, YCbCr 709
input level: Choice between; auto, computer, video. Depending on source select between
0-255 (computer), 16-235 (video).
source correction: Gives access to individual brightness offset settings (see below).
In addition you can start the AD calibration process which requires VGA source
which displays a Grey16 image (right hand image below).