Epson PowerLite 7550C User Manual page 132

Video tab (video source is a computer)
If the image source on your projector is set to Computer, you see the
following options on the Video tab:
Option
Brightness
Contrast
Sync.
Tracking
Color
Position
Auto
Set Up
Pattern
Display
Reset
Description
Adjusts screen brightness. Increase brightness to lighten an image, or
decrease it to darken the image.
Adjusts the difference between light and dark areas. Increase the
contrast to make light areas lighter and dark areas darker. Decrease it to
minimize the difference between light and dark areas.
Synchronizes with the tracking signal sent from the computer. Adjust
this setting to correct fuzziness or screen flicker.
Matches the projector's internal clock to various computer graphic
signals. Adjust this setting to remove vertical lines from the image.
Adjusts the balance of red, green, and blue in the image.
Adjusts the horizontal and vertical screen position.
When enabled, this setting allows the projector to sense the graphic
signal being sent from the computer and optimize it for the projector. If
the projector doesn't automatically recognize the video source, select a
different signal through your computer.
Enables or disables display of the test pattern currently selected.
Resets all settings to their default values.
Using the Projector Setting Dialog Box
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