Acer X1230 User Manual
Page 32
20
English
Rear-Ceiling
•
When you select this function, the projector reverses and
inverts the image at same time. You can project from
behind a translucent screen with ceiling mounted
projection.
Aspect
Ratio
Use this function to choose your desired aspect ratio.
•
Auto: Keep the image with original width-height ratio
and maximize the image to fit native horizontal or
vertical pixels.
•
4:3: The image will be scaled to fit the screen and
displayed using a 4:3 ratio.
•
16:9: The image will be scaled to fit the screen and
displayed using a 16:9 ratio.
Auto Keystone
Automatically adjusts image distortion caused by tilting
projection (±40 degrees).
Manual
Keystone
Manually adjusts image distortion caused by tilting projection
(±40 degrees).
Sharpness
Adjusts the sharpness of the image.
•
Press
to decrease the sharpness.
•
Press
to increase the sharpness.
H. Position
(Horizontal
Position)
•
Press
to move the image left.
•
Press
to move the image right.
V. Position
(Vertical
Position)
•
Press
to move the image down.
•
Press
to move the image up.
Frequency
Changes the projector’s refresh rate to match the frequency
of your computer’s graphics card. If you experience a vertical
flickering bar in the projected image, use this function to
correct it.
Tracking
Synchronizes the signal timing of the display with the graphic
card. If you experience an unstable or flickering image, use
this function to correct it.