Knoll HD225 User manual

knöll systems - advanced home products http://www.knollsystems.com/lcd225.htm
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HD225 Throw Distance
Thank you for choosing Knöll projectors! The HD225 is a state of the art projector with a
high resolution 16: LCD imager to give bright clear images and display movies in a format
similar to the one they were filmed in. Its all glass lens allows for a wide level amount of
zooming (1:1.2).
The HD225 projector is designed only for use with 16: aspect ratio screens. 4:3 images can
safely be displayed on the 16: screens.
The Knöll CM22 ceiling mount kit is easy to install and swivels for exact placement. It drops
the projector about 3" and the projector lens is about 6" from the ceiling. If more of a drop
is needed, the CM20+6 extender adds an extra 6" drop. As many CM20+6 can be added as
needed.
The most frequently asked questions concerning DLP projectors are:
How much can the projector be tilted down (when ceiling mounting) or up (when floor
mounted)?
About 20 degrees. The HD225 has a digital adjustable keystone but for best overall image
the HD225 projector should ideally be level if the screen is vertical (which is usually the
case).
Is the width of the 4:3 image the same as the 16: image?
No. The HD225 has 16: imager and displays 16: or widescreen images using its full width of
1280 pixels by 720 pixels high. When displaying 4:3 images it still uses all of its 720 pixels in
height but the image width is reduced to 60 pixels. Black bars are added on the sides of the
image.
Projection throw distances are the maximum and minimum horizontal
distances from the projector lens to the screen. If the projector is mounted
level (this is strongly recommended) the image will drop (ceiling mounted
projector) or rise (floor mounted projector).

knöll systems - advanced home products http://www.knollsystems.com/lcd225.htm
2 of 2 1/21/2005 1:17 P
HD225 Projection Throw Distance 16:9 Video Screen
Screen Diagonal 2" 103" 106" 110" 122.5" 146.75"
Minimum
Distance 134.7" 150.8" 155.2" 161" 17 .4" 214. "
Maximum
Distance 158.7" 177.6" 182.8" 18 .7" 211.3" 253.1"
Image rise or
drop 4.6" 5.2" 5.3" 5.5" 5.6" 7.4"
Viewing Area 45"x80" 50.5"x8 .75" 52"x 2" 54"x 6" 60"x107" 72"x128"
MAXIMUM DISTANCE TO SCREEN (16: ) = 1.725 x SCREEN DIAGONAL SIZE
MINIMUM DISTANCE TO SCREEN (16: ) = 1.464 x SCREEN DIAGONAL SIZE
IMAGE DROP OR RISE (16: ) = 0.050 x SCREEN DIAGONAL SIZE