Barco R9040171, Руководство пользователя

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2. Installation Guidelines
and lightest parts of the image. With bigger screens, the ‘wash out’ becomes more important. As a general rule, darken the room to
the point where there is just sufficient light to read or write comfortably. Spot lighting is desirable for illuminating small areas so that
interference with the screen is minimal.
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 (video) from 1.00m (3.3ft) to 6.00m (19.7ft) with a aspect ratio of 5 to 4.
2.2 Configuration
Which configuration can be used ?
The projector can be installed to project images in four different configurations :
• Front/table
• Rear/table
• Front/ceiling
• Rear/ceiling
Positioning the projector
Drawings are given for a nominal lens position.
8 R5976495 BARCOREALITY SIM 6 ULTRA MM 22102002