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OPERATION
order to fill the screen. Non-HDTV (16:9) anamorphic images, common on DVDs, will be
stretched vertically. With the exception of HDTV (16:9), the “Full Screen” setting produces an
aspect ratio that is either almost or exactly 4:3.
SELECT “ANAMORPHIC” to display an entire
non-HDTV “wide screen” (anamorphic) image in its
native 16:9 aspect ratio. The image will fill the
screen from left-to-right, but will not use all vertical
pixels available (top and bottom will be black). If
you do not choose “Anamorphic” when a non-HDTV
anamorphic image is present, the default image will be stretched vertically, characterized
by obvious distortion and “thin people”.
NOTE: Use “Anamorphic” for regaining a 16:9 display of non-HDTV anamorphic
sources only (typically found on some DVDs, for example). For HDTV, the “Full
Screen” default will produce the same result.
Size
Size controls both the image width and height in tandem, maintaining the original aspect ratio
(proportion) of data from the incoming signal. 1000 = no resizing.
Vertical Stretch
Vertical stretch adjusts the height the image while keeping the width constant. Use Vertical
Stretch to display data from the incoming signal in a different aspect ratio. 1000 = no vertical
stretch (i.e., native aspect ratio).
Pixel Track
(SHORT CUT: Press and adjust the top slidebar.)
Pixel tracking adjusts the frequency of the pixel sampling clock, indicated by the number of
pixels per line, so that all pixels generated by a particular source are sampled. Proper pixel
tracking ensures that the image quality-whether good or poor- is consistent across the screen,
and that pixel phase can be optimized (below).
NOTE: By default, the projector will sample at the correct frequency for most sources.
Pixel tracking is adjusted most effectively using a good test pattern, such as a smooth gray con-
sisting of a clear pattern of tiny black and white dots, or a similar “half on, half off” graphic
image, such as the Windows shutdown screen. Steady flickering or several soft vertical stripes
or bands across the entire image indicates poor pixel tracking. Adjust the slidebar until the
stripes broaden to the point where one large stripe fills the image. Again, the image may still
exhibit some noise. See Pixel Phase.
"Full Screen"
Image
Image Image
Image
If graphics...
If video...
If HDTV...
If non-HDTV
anamorphic signal...
1024
approx.
1024
1280
approx. 1280 1280
1280
1024
For non-HDTV anamorphic only
1280
Image
"Anamorphic"
720
Pixel