Technaxx TX-132 User Manual page 5

Focus & Keystone
Sometimes, the image projected on the wall looks like a trapeze
rather than a square, causing distortion that needs to be avoided.
You can adjust it with the keystone adjustment wheel (3)
following picture.
Image focus
Put the device vertical to the projector screen or white wall. Adjust
the focus with the focus adjustment wheel (2) until the image is
clear enough. Then the focus is finished. During the focusing, you
could display video or display the menu to check the adjustment.
The device provides optical keystone function, so you could turn
the keystone to adjust the image. The device does not have
horizontal keystone correction function.
Multimedia connection
VGA input socket: the port can be connected to a computer or
other VGA video signal output socket. NOTE: The device and
connection of laptop may not be able to display images at the same
time, if that happens, set the computer display attributes, select for
CRT output mode.
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