Epson Professional Series II User Manual page 31

The monitor automatically selects which video mode to use. It
analyzes the signal input (the frequency and polarity of the
horizontal and vertical sync pulses) from the computer, checks
the video modes stored in its memory, and uses the most
appropriate mode. The signal input depends on the computer,
display adapter card, and application program you are using.
The sections below explain how to modify a video mode, recall
a factory-set video mode, and create a user-defined video
mode. For each mode, you can set any of the four display
parameters listed in the following table. Refer to this table as
you follow the steps below.
Display parameters
Parameter Function
Horizontal Centers the image horizontally. Press and hold down the
phase side of the Adjustment button to move the image left, or the
+ side to move the image right. 1
Width Adjusts the width of the image. Press and hold down the
side of the Adjustment button to reduce the width of the
image, or the + side to increase its width.
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