InFocus IN82 - Manual (Page 6)

5
Positioning the projector
To determine where to position the projector, consider the size and shape of your
screen, the location of your power outlets, and the distance between the projector
and the rest of your equipment. Here are some guidelines:
• Position the projector on a flat surface at a right angle to the screen. The pro-
jector must be at least 4.9 feet (1.5m) from the projection screen.
• For safety reasons, position the projector within 10 feet (3m) of your power
source (running extension cables may introduce a trip hazard). To ensure ade-
quate cable access, do not place the projector within 6 inches (.15m) of a wall
or other object.
• If you are installing the projector on the ceiling, refer to the installation guide
that comes with the Ceiling Mount Kit for more information. To turn the
image upside down, see “Ceiling” on page 24. We recommend using an InFo-
cus authorized ceiling mount.
• Position the projector the desired distance from the screen. The distance
from the lens of the projector to the screen, the zoom setting, and the video
format determine the size of the projected image.
• The image offset is 136%. This means that if you have an image 10’ high, the
bottom of the image will be 3.6’ above the center of the lens.
NOTE: Visit the Service section of our website at www.infocus.com/calculator for
an interactive image size calculator.
bottom of image
3.6 ft above center
10 ft high
image
Projection angle in 16:9 mode
lens center
of lens
Table 1:
Range of distance to the screen for a given screen size
Diagonal
Screen Size
(inches/m)
Distance to screen
Horizontal
Screen Size
(inches/m) Maximum
distance
(feet/m) Minimum
Distance
(feet/m)
60/1.5 52.6/1.3 9.7/2.96 8.1/2.47
80/2 69.8/1.8 12.9/3.94 10.8/3.28
92/2.3 80.2/2 14.8/4.52 12.4/3.77
150/3.8 130.9/3.3 24.2/7.38 20.2/6.15
K1 RG.fm Page 5 Thursday, September 27, 2007 10:24 AM