Ask Proxima DP2000s User Manual

Ask Proxima Projectors

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Copyright © 1997-2004 InFocus Corporation.

All Rights Reserved.

ASK Proxima C40 and C50 (DP2000s and DP2000x) Projectors
Frequently Asked Questions: Installation

Do I have to buy an ASK Proxima ceiling mount? I see that other companies offer mounts for less money. Can't I
just build my own mount?

We strongly suggest that you use an ASK Proxima-approved ceiling mount with your projector. There are two basic reasons

for this.

First, our mounts are designed for a specific projector. They are built so they do not interfere with air circulation in and out of

the projector. This is an important because when you install a projector on the ceiling, you are installing it in the warmest

part of the room. Our mounts are made to bear the weight of the projector. We don't have any 'one-size-fits-all' mounts. We

use heavy-gauge steel and sturdy fasteners.

Second, should anything happen to your projector due to a non-approved ceiling mount, your warranty will not pay for the

repair.

Can I mount the C40/C50 on the ceiling or the wall?

Yes. You use a ceiling mount kit, available from your reseller. You'll probably also want to run installation and video cables to

the projector, as well as a power cable. Many of these items are also available from your reseller. Most people arrange to

have a professional installer mount the projector on the ceiling and run the cables.

You can also mount this model on the wall, as long as it mounted right side up or upside down. The projector cannot be

mounted sideways. ASK Proxima does not sell a wall mount for this projector. Please note that any damage that occurs due

to a non-standard mount is not covered by warranty.

What is the projection ratio (throw ratio) for the C40/C50?

The horizontal throw ratio for the C40/C50 in its default 4:3 aspect ratio is 1.8 - 2.15. There are two ratios because the

projector has a zoom lenses. The two numbers represent the largest and smallest zoom settings.

The horizontal throw ratio is based on the width of the projected image. In the 16:9 aspect ratio, the width of the image

remains the same as in 4:3. Thus, the throw ratio for 4:3 and 16:9 is the same.

How do I use the throw ratio to determine throw distance or image size?

The horizontal throw ratio equals the throw distance divided by the image width. TR = TD / W. Let's say that you want to

figure out how far back to place the C40/C50 to achieve a 100" wide image. For the widest zoom setting, the formula would

be, 1.8 = TD / 100", or TD = 100" x 1.8= 180 inches (15 feet).

For the smallest zoom setting, the formula is 2.35 = TD / 100", or TD = 2.15 x 100 = 215 inches (17.9 feet). In other words,

you need to place the projector 15 to 17.9 feet from the screen to get a 100" wide image.

You can use the same formula to determine what size an image you get when you know what the throw distance is. In this

case, W (image width) = TD (throw distance) / TR (throw ratio). Let's say that you know the projector will be located 12 feet

from the screen. For the widest zoom setting, the formula is W = 144" /1.8 = 80 inches. For the smallest zoom setting, the

formula is W = 144" / 2.15 = 67 inches. Thus, if the C40/C50 is 12 feet (144") from the screen, the resulting image size will

be 67" to 80" wide.

ASK Proxima has created a calculator that automatically provides you with throw distances and image sizes (including

horizontal, diagonal and vertical sizes). It is available from the ASK Proxima website.

Can the C40/C50 be mounted on the wall?

Yes, as long as it mounted right side up. The projector cannot be mounted sideways. ASK Proxima does not sell a wall mount

for this projector. Please note that any damage that occurs due to a non-standard mount is not covered by warranty.

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