Infocus IN3926 Benutzerhandbuch

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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 general guidelines:
Position the projector on a flat surface at a right angle to the screen. IN3924 
must be at least 45” (1.0m) from the projection screen, and IN3926 must be at 
least 51” (1.3m) from the projection screen.
If you are installing the projector on the ceiling, we strongly recommend using 
InFocus approved ceiling mounts for proper fitting, ventilation and 
installation. Refer to the installation guide that comes with the InFocus Ceiling 
Mount Kit (p/n PRJ-MNT-UNIV) for more information. The warranty does 
not cover any damage caused by use of non-approved ceiling mount kits or by 
installing in an improper location. To turn the image upside down, see “Ceiling 
mount” on page 28. We recommend using an InFocus authorized ceiling 
mount.
Position the projector the desired distance from the screen. The distance from 
the lens of the projector to the screen and the video format determine the size 
of the projected image.
The image offset for IN3924 is 115% +/-5%. This means that if you have an 
image 60 inches (1.5 meters) tall from a table-mounted projector, the bottom of 
the image will be 9 inches (22.9 cm) above the centerline of the lens. The 
image offset for IN3926 is 113% +/-5%. This means that if you have an image 
60 inches (1.5 meters) tall from a table-mounted projector, the bottom of the 
image will be 7.8 inches (19.8 cm) above the centerline of the lens.
60” image 
(height)
bottom of image 9” 
above center of lens
Projection angle
lens center
Table 1: IN3924 (XGA) Screen size 
Diagonal Screen Size 
(inches/m) 
Size of the Projected 
Image Width
(inches/m)
Distance to screen 
(inches/m)
50”/1.3m
40”/1.0m
19”/0.5m
60”/1.5m
48”/1.2m
23”/0.6m
70”/1.8m
56”/1.4m
27”/0.7m
80”/2.0m
64”/1.6m
31”/0.8m
100”/2.5m
80”/2.0m
38”/1.0m
Table 2: IN3926 (WXGA) Screen size 
Diagonal Screen Size 
(inches/m) 
Size of the Projected 
Image Width
(inches/m)
Distance to screen 
(inches/m)
60”/1.5m
51”/1.3m
19”/0.5m
70”/1.8m
59”/1.5m
22”/0.6m
90”/2.3m
76”/1.9m
29”/0.7m
100”/2.5m
85”/2.2m
32”/0.8m
120”/3.1m
102”/2.6m
38”/1.0m
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109
Ceiling mount screws:
M4x8 (Max. L= 8mm)
Unit: mm