Barco Reality 909, Installation Manual

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3. Installation Guidelines
Screens are rated by how much light they reflect (or transmit in the 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. The choice between higher and lower gain screens is largely a matter of personal preference and another consideration
called the Viewing angle. 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.
Lens Type (Image Sizing)
Following lens types are available for the Barco Reality 909:
Lens Type Projected Width in mm (inch)
HFQ900 1400mm (55.1inch) to 6000mm (236.2inch)
Each lens type will correspond with an available image width that can be projected. The lens type can be found on the lens type
label located on the lenshead.
Image 3-1
Lens type label located on the lenshead
The projector leaves the BARCO factory, adjusted as a Front/Table projector for a screen width of 2400 mm (94.5 inch) with an
aspect ratio of 4 to 3 (The projector can be factory aligned in other configurations if ordered).
Screen Width
Screen size ratio 4 to 3
Screen Height
Image 3-2
Image Sizing
Changing the image size from the projector preset size requires a realignment of the projector.
12 R5976257 BARCO REALITY 909 15/03/2003