Dell 1210S Projector - Manual (Page 32)

H ORIZONTAL P OSITION —Press to move the image to the left and to move the
image to the right.
V
ERTICAL P OSITION —Press to move the image down and to move the image
up.
F
REQUENCY —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
Frequency control to minimize the bars. This is a coarse adjustment.
T
RACKING —Synchronize the phase of the display signal with the graphic card. If you
experience an unstable or flickering image, use Tracking to correct it. This is a fine
adjustment.
Using Your Projector 32