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INSTALLATION AND SETUP
Vertical & Horizontal Position
the size of the screen and the lens type. Correct vertical position helps ensure that the image will
be rectangular in shape rather than keystoned (having non-parallel sides) and that image focus and
brightness both remain optimized.
down-by turning the top screw on the front of the projector (the bottom screw if the projector is
ceiling mounted). The range of adjustment is roughly 130%, depending on the specific lens you
are using and whether or not you are also offsetting horizontally. See Table 2.1 for the percentage
of the image that can be displayed above and below the center of each type of lens designed for
this projector. These image offsets are also illustrated in Figure 2.6 (fixed lenses) and Figure 2.7.
THE VERTICAL POSITION of the projector in relation to the screen also depends on
In addition, vertical position of the image can be manually offset-that is, moved up or
Table 2.
Lens Type
1.5 - 2.2:1
Figure 2.6. Maximum Vertical Offsets (FIXED LENSES)
. Maximum % of Image Offset from Lens Center
1
Max. Recommended Image Offset
105%
* 0.8:1
1.2:1
126%
129%
2.2 - 4:1
129%
4-7:1
137%
* NOTE: This lens is the same as the VX
2-8
100%
133%
117%
117%
126%
3 0.8:1 lens
-
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