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Installation worksheet for projecting on a plain wall
1. Measure the ceiling height (distance from the floor to the ceiling).
2. Determine the desired aspect ratio of the image. For new computers or laptops, this
will most likely be WXGA (16:10). For older equipment, this will most likely be XGA (4:3).
You may need to consult your IT department for this information.
___ 4:3 XGA
3. Using the tables on pages 21 to 25 for your aspect ratio, select the largest image size
available for your ceiling height.
Image height (h)
Image width (w)
4. Determine the desired distance from the floor to the bottom of the image area (f).
The recommended minimum distance is 30 inches. Images appearing less than 28
inches from the floor may be obstructed for some viewers.
5. Find the top of the projected image area by adding distances (f ) and (h).
6. Use the tables on pages 21 to 28 to determine the required distance from the top of the
image area to the bottom holes of the wall plate (c).
7. Add:
Required distance from top of image area to bottom holes of wall plate (c)
Height of image area (h)
Distance from floor to bottom of image area (f )
Height of wall plate plus cover
If the total exceeds the ceiling height, you will need to reduce the image size or reduce
the distance from the floor to the bottom of the image area.
10 in. (254 mm)—height of
wall plate plus cover
Required distance from top of
image area to bottom holes of
wall plate (c)
Ceiling height
___ 16:10 WXGA
Height of
image area (h)
Width of image area (w)
18
___ 16:9 Widescreen
1 in. (25 mm)—distance
from top of image area to
bottom of Touch Unit
Diagonal size of
image area (S)
Distance from floor to
bottom of image area (f)
_____
_____ (h)
_____ (w)
_____ (f )
_____
_____ (c)
_____ (c)
_____ (h)
_____ (f )
+10
inches
_____ total
Distance from ceiling
to top of image area (d)
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