Dwin 2 Instructions d'exploitation télécharger pdf (Page 26)

B. Mounting and Throw Distance Calculation

Before starting the installation you will need to calculate the projector throw

distance 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 compensated 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.

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Dwin 2 Instructions d'exploitation Page 26