Section 2: Installation and Setup
Ambient Lighting f The high brightness of this projector is well suited for locations where ambient lighting 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 f 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. |
| • 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 overall |
| effect. A good rule of thumb is to be no closer than 1.5 times the width of the |
| screen. |
Projector Position and | f Throw distance |
Mounting | |
| Throw distance (also known as projection distance) is the distance measured from |
| your projector’s front feet 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, if you are |
| going to use a 0.8:1 lens, throw distance would roughly be 0.8 X screen width. |
| IMPORTANT: Always calculate the precise throw distance for the lens type |
| and screen size you’re going to use. Refer to Appendix D for actual throw |
| distance formulas and quick reference charts. |
| NOTE: An online lens calculator is also available at www.christiedigital.com > |
| service and support > product downloads. |
Christie DS+60/DW30/Matrix 3000 User’s Manual |
