INSTALLATION GUIDELINES
PV152
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PRO1200 INSTALLATION GUIDE
Installation guidelines
Careful consideration of things such as image size, ambi-
ent light level, projector placement and type of screen to
use are critical to optimize the use of the projection
system.
Environment
Do not install the projection system in a site near heat
sources such as radiators or air ducts, or in a place subject
to direct sunlight, excessive dust or humidity. Be aware that
room heat rises to the ceiling; Make sure the temperature
near the installation site is not excessive.
What about ambient light ?
The ambient light level of any room is made up of direct or
indirect sunlight and the light fixtures in the room. The
amount of ambient light will determine how bright the
image will appear. So, avoid direct light on the screen as
much as possible.
Windows that face the screen should be covered by opaque
drapery while the set is being viewed. It is desirable to install
the projecting system in a room whose walls and floor are of
non-reflecting material. The use of recessed ceiling lights
and a method of dimming those lights to an acceptable level
is also important. Too much ambient light results in a ‘wash
out’ of the projected image. This appears as less contrast
screen is minimal.
Which screen type?
There are two major categories of screens used for projection
equipment. Those used for front projected images and those
for rear projection applications.
Where to install the projector ?
To indicate a correct installation position it is necessary to
know :
• The distance from projector to ceiling in case of Ceiling
mounted or the distance from projector to floor in case
of Table mounted;
• The distance from projector to screen.
Screens are rated by how much light they reflect (or transmit
in case of rear projection systems) given a determined
amount of light projected toward them. The ‘GAIN’ of a
screen is the term used. Front and rear screens are both rated
in terms of gain. The gain of screens range from a white matte
screen with a gain of 1 (x1) to a brushed aluminized screen
with a gain of 10 (x10) or more. Another important
consideration is the degree the screen's gain varies with the
horizontal and vertical viewing angle. The choice between
higher and lower gain screens is largely a matter of personal
preference.
In considering the type of screen to choose, determine
where the viewers will be located and go for the highest gain
screen possible. A high gain screen will provide a brighter
picture but reduce the viewing angle.
For more information about screens, contact your local
screen supplier.
What image size? How big should the image be?
The projector is designed for projecting an image width from
1.4m (4.6') to 6m (20') with an aspect ratio of 4 to 3. It
leaves the factory, adjusted as a ceiling/front projector for
a screen width of 2.4m (7.8').
Changing the image size from the factory preset size requires
a realignment of the projector.
