Image (Computer/Video Mode) - Acer PD311 series User Manual

User Controls
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Keystone
Adjust image distortion caused by tilting projection. (±16 degrees)

Aspect Ratio
Use this function to choose your desired aspect ratio.
Auto : Keep the image with original width-higth ratio and maxi-

mize the image to fit native horizontal or vertical pixels.
16:9 : The input source will be scaled to fit the width of the screen

and narrowed the height to make the displayed image be-
comes 16:9 ratio.
4:3 : The input source will be scaled to fit the projection screen and

becomes 4:3 ratio.
Projection
Front-Desktop

The factory default setting.
Front-Ceiling

When you select this function, the projector turns the im-
age upside down for ceiling-mounted projection.
Rear-Desktop

When you select this function, the projector reverses the
image so you can project behind a translucent screen.
Rear-Ceiling

When you select this function, the projector reverses and
Image
(Computer / Video
Mode)