Ambient Light; Other Considerations; Projector Position And Mounting - Runco Video Xtreme VX-40d Owner's Operating Manual

Section 2: Installation and Setup

Ambient Light

Other Considerations

Projector Position
and Mounting
The high brightness of this projector is well suited for locations where ambient lighting
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might be considered less than ideal for projection. A typical room with ceiling lights and
windows rarely requires special attention. Contrast ratio in your images will be noticeably
reduced only if light directly strikes the screen, such as when a shaft of light from a window
or floodlight falls on the image. Images may then appear washed out and less vibrant.
In general, avoid or eliminate light sources directed at the screen.
Other considerations and tips that can help improve your installation:
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• Keep the ambient temperature constant and below 35°C (95°F). Keep the projector
away from heating and/or air conditioning vents. Changes in temperature may cause
drifts in the projector circuitry, which may affect performance.
• Keep the projector away from devices that radiate electromagnetic energy such as
motors and transformers. Common sources of these include slide projectors, speakers,
power amplifiers, elevators, etc.
Throw distance
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Throw distance is the distance measured from your projector's lens to the screen. This is
an important calculation in any projector installation as it determines whether or not you
have enough room to install your projector with a desired screen size and if your image will
be of the right size for your screen.
You can quickly estimate the throw distance by taking the horizontal width of the screen
and multiplying it by the lens throw ratio. The result of this calculation tells you roughly how
far back the projector should be positioned from the screen in order to project a focused
image large enough to fill the screen. For example, using a 0.75:1 lens, throw distance
would roughly be 0.75 x screen width.
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