Other Considerations; Projector Position And Mounting; Throw Distance - Christie Mirage S+/HD/WU User Manual

2.2.10 Other Considerations

Other considerations and tips that can help improve your installation:
• 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 that 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.
• Choose the best screen size for the application. Since more magnification reduces brightness, use a screen
size appropriate for the venue but not larger than required. Installing a large screen in a small room is similar
to watching television at a close range; too large a screen can overpower a room and interfere with the over-
all effect. A good rule of thumb is to be no closer than 1.5 times the width of the screen.
2.3

Projector Position and Mounting

2.3.1 Throw Distance

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:
• Screen Width = 10 feet
• Lens Type is 0.7:1
• Throw Distance (TD) = 10 feet x 0.7 = 7 feet
IMPORTANT! Use the lens and screen size to calculate the precise throw distance using the
tables provided in the Dealer Section of the Christie Website, PN 020-100298-xx. Due to lens
Roadster, Matrix WU, Mirage S+/HD/WU User Manual
020-100002-06 Rev. 1(04-2011)
Section 2: Installation and Setup
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