Acer XD1250D series - Manual (Page 25)

User Controls
23 ... English
Image
(Computer / Video
Mode)
 “H. Position”, “V.
Position”, “Frequency”
and “ Tracking” func-
tions are not supported
under DVI and Video
mode.
 “Sharpness” func-
tions is not supported
under VGA connector
source.
 Rear-Ceiling
When you select this function, the projector reverses and
turns the image upside down at same time. You can project
from behind a translucent screen with ceiling mounted
projection.
H. Position (Horizontal Position)
 Press the to move the image left.
 Press the to move the image right.
V. Position (Vertical Position)
 Press the to move the image down.
 Press the to move the image up.
Frequency
“Frequency” changes the display data frequency to match the fre-
quency of your computer’s graphic card. If you experience a vertical
flickering bar, use this function to make an adjustment.
Tracking
“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.
Sharpness
Adjusts the sharpness of the image.
 Press the to decrease the sharpness.
 Press the to increase the sharpness.