Optoma HD20 - Manual (Page 28)

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User Controls
Overscan
Overscan function removes the noise in a video image. Overscan
the image to remove video encoding noise on the edge of video
source.
Edge Mask
 Press the to reduce the size of an image.
 Press the to magnify an image on the projection screen.
V Image Shift
Shift the projected image position vertically.
V Keystone
Press the or to adjust image distortion vertically. If the image
looks trapezoidal, this option can help make the image rectangular.
DISPLAY
 Each I/O has
different setting of
“Overscan”.
 “Overscan” and
“Edge Mask” can’t
work at same time.
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