32 Using Your Projector
HORIZONTAL POSITION—Press to move the image to the left and to move the
image to the right.
VERTICAL POSITION—Press to move the image down and to move the image
up.
FREQUENCY—Allows you to change the display data clock frequency to match the
frequency of your computer graphics card. If you see a vertical flickering wave, use
Frequenc y control to minimize the bars. This is a coarse adjustment.
TRACKING—Synchronize the phase of the display signal with the graphic card. If you
experience an unstable or flickering image, use Track in g to correct it. This is a fine
adjustment.