26
B. Mounting and Throw Distance Calculation
Before starting the installation you will need to calculate the projector throw dis-
tance and the ceiling to top-of-picture offset. The throw distance and the precise
center of the screen are then used to determine the exact location for the physical
installation of the projector.
The TransVision
™
’s zoom lens allows for a wide range of throw distance op-
tions — the distance from the projector to the screen. For maximum flexibility in
adjustment we recommend that, where possible, the projector be installed in the
middle range of the possible distances. However, the unit may be installed at any
point within the allowable range.
• To obtain the minimum throw distance, multiply the screen width by 1.65.
• To obtain the maximum throw distance, multiply the screen width by 2.08.
C. Screen Offset
Screen offset is the distance between the top of the picture area of the screen and
the ceiling. This distance is important and it should be calculated before the screen
is installed to ensure proper positioning of the projector in relation to the screen.
Incorrect screen offset may cause image keystone distortion and cannot be com-
pensated either with the mounting system or electronically.
The TransVision
™
4 is
a 16:9 Projector and is designed to be used with a 16:9 screen.
• The screen offset is fixed and may be calculated from the following formula:
Offset = .081 x W +4.5”
. The calculation includes DWIN’s 2 inch Ceiling Mount
Bracket.
• Please refer to our TransVision
™
4 Calculator, under the Customer Sup-
port section at
www.dwin.com
for assistance with calculating these
dimensions.
NOTE:
The ceiling mounting system enables you to make small adjustments to
the vertical tilt without introducing visible keystone distortion.
For floor-mounted installations the picture offset is the distance between the
mounting surface of the projector and the bottom of the picture. In order to deliver
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Summary of Contents for DuoVision
Page 1: ...DuoVision DuoVision 1 3 Printed in USA...
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