Barco IQ-Graphics 300, Руководство пользователя

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Installation Guidelines
5976367 BARCO IQ-G300 19092001
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.
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.
A high gain screen will provide a brighter picture but reduce the viewing angle.
What image size? How big should the image be?
The projector is designed for projecting an image size with a screenwidth from 1.00m (3.3ft) to 6.00m (19.7ft) with an aspect ratio
of 4 to 3.
Projector Configurations
Which configuration can be used ?
The projector can be installed to project images in four different configurations :
Front/table
Rear/table
Front/ceiling or
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Positioning the Projector
Drawings are given for a nominal lens position.
Definitions of the Abbreviation on drawings
ON AXIS : middle of the lens coincides with the middle of the screen (see image on next page)
OFF AXIS: middle of the lens does not coincide with the middle of the screen (see image on next page). Projecting OFF AXIS can
be done in two ways: negative way= shifting the lens in the direction of the projector's bottom
positive way = shifting the projector in the direction of the top of the projector
Projecting OFF axis can be done in a range from -40% to 120%.
B = Distance between ceiling and top of the screen or between floor and bottom of the screen.
A = Correction value, distance between bottom side of projector (without feet) and middle of the lens in a 100% OFF-axis configuration.
A' = Correction value, distance between bottom side of projector (without feet) and middle of the lens in an ON-axis configuration.
A and A' are the values to be subtracted from B to obtain the correct installation position.
A = 107 mm or 4.21 inch
A'= 95 mm or 3.82 inch
CD = Total distance between projector and ceiling or projector and floor.
SW = Screen width.
SH = Screen height (image height).
PD = Projector Distance, distance between screen and projector.