Table of Contents
Advertisement
Installation guidelines
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.
To find the correct position for the projector, use the following
formulas:
In metric :
PD[cm] = SW[cm] x 1.1358 + 18.53[cm]
A[cm] = SW[cm] x 0.142 - 25.26[cm]
In inch :
PD[inch] = 1.269 x SW[inch] + 7.12
A[inch] = 0.12 x SW[inch] - 9.70
Abbreviations used in the calculations and the drawings :
B
= Distance between ceiling and top of the screen (Ceiling
mounted) or distance between floor and bottom of the screen
(Table mounted).
A
= Correction Value, extra value to be added to B to obtain the
correct installation position (In some cases the A value can be
negative).
CD = Total distance between projector and ceiling (Ceiling mounted)
or total distance between projector and floor (Table mounted).
CD = A + B.
Ceiling Mounted : when the result is negative, enlarge the
distance between ceiling and top of the screen, mount screen
lower, until CD becomes zero or positive.
Table Mounted : when the result is negative, enlarge the
distance between floor and bottom of the screen, mount
screen higher, until CD becomes zero or positive.
SW = Screen width.
PD = Perpendicular distance between screen and projector's mount.
To obtain the right values, you can make use of the new option
included in the Installation Adjustment Mode to let the projector
calculate the parameters automatically. Please refer to Chapter 8 for
details.
Ceiling Mount
To install the ZENITH PRO 1200x in the Ceiling configuration, use
ZENITH'S Ceiling Mount Kit (PJR1200CE). Installation instructions
are included with this kit.
Table Mount
ZENITH offers a heavy-duty projection table with adjustable height
which allows the projector to be correctly positioned perfectly to the
installation requirements.
3-2
Ceiling
PD
B
Screen
Front view
Screen width
SW
Top view
•
Install the projector water levelled in both directions
•
Install the projector perpendicular to the screen
Used phosphor width on the CRT faceplate (e.g. green CRT)
Mounting Configuration
11.5 cm
Green phosphor
green phospho
On illumination
In order to obtain the best quality for the projected image, it is essential
that the ambient light which is allowed to fall on the screen be kept
to an absolute minimum.
When installing the projector and screen, care must be taken to avoid
exposure to ambient light directly on the screen. Avoid adverse
illumination on the screen from direct sunlight or fluorescent lighting
fixtures.
The use of controlled ambient lighting, such as incandescent spot
light or a dimmer, is recommended for proper room illumination.
Where possible, care should also be taken to ensure that the floors
and walls of the room in which the projector is to be installed are non-
reflecting, dark surfaces. Brighter surfaces will tend to reflect and
diffuse the ambient light and hence reduce the contrast of the
projected image on the screen.
206-3610 ZENITH PRO 1200x 151199
CD
A
Projector
(4.5 inch)
Advertisement
Table of Contents
