Installation And Setup - Christie CP2000-X User Manual

Throw Distance Formulas
Vertical & Horizontal

Position
CP2000-X User Manual
020-100031-01 Rev . 1 (03-2009)
Table 2.3. provides the throw distance formula for each high-contrast lens. Once you

know what size screen you wish to fill, use the formula for the corresponding lens to
calculate the best throw distance. All formulas are in centimeters (cm).
NOTE: Minimum throw distance is 15 feet for all lenses except as noted.
Table 2.3. Throw Distance Formulas
Lens Throw Ratio Throw Distance Formula (cm) ±5%
1.25 – 1.45:1 zoom Min:1.26 x screen width (Ö cm) + 25.9
Max: 1.46 x screen width (Ö cm) + 23.5
1.45 – 1.8:1 zoom Min: 1.45 x screen width (Ö cm) + 18.4
Max: 1.81 x screen width (Ö cm) + 16.8
1.8 – 2.4:1 zoom Min: 1.80 x screen width (Ö cm) + 17.9
Max: 2.41 x screen width (Ö cm) + 15.1
2.2 – 3.0:1 zoom Min: 2.24 x screen width (Ö cm) + 9.6
Max: 3.05 x screen width (Ö cm) + 4.0
3.0 – 4.3:1 zoom Min: 3.05 x screen width (Ö cm) + 2.5
Max: 4.35 x screen width (Ö cm) + .04
4.3 – 6.0:1 zoom Min: 4.37 x screen width (Ö cm) + 7.3
Max: 6.16 x screen width (Ö cm) + 3.0
5.5 – 8.5:1 zoom Min: 5.59 x screen width (Ö cm) + 10.1
Max: 8.71 x screen width (Ö cm) + 1.2
NOTES: 1) Make sure to use HORIZONTAL screen width in all formulas. 2) Throw
distance can often be exceeded with negligible loss of focus. 3) Throw ratios,
formulas and throw distances apply to both standard and optional high-contrast
lenses.
Refer to the offsets shown here for help in determining how high or low to install the

projector in relation to the center of the screen, and/or how far off to one side.
VERTICAL POSITION
For many typical large venue rental/staging installations and theatres, the projector
will be above screen center. An ideal vertical position helps ensure that 1) images
will be accurately rectangular in shape rather than distorted into a keystoned shape
with non-parallel sides, and 2) focus and brightness will remain optimized.
Vertical position of the image can be manually offset—that is, placed higher or lower
in relation to lens center—using the vertical offset knob on the lens mount. Starting
with no offset, the 2048 x 1080 image from this projector can be moved by a
maximum distance of 540 pixels, resulting in all of the image displayed above or
below lens center (Figure 2.12).
describes the angle of the projector in relation to the screen. Ideally,
VERTICAL TILT
the projector should be inclined to match the screen, so that the face of the lens and
the surface of the screen are parallel to each other. See Tilting and Special
Orientations, below.
describes the elevation of the projector in relation to the screen.

INSTALLATION AND SETUP

Min. Throw Approx.
Distance Max.Screen
Width
5m (15 ft.) 44m (145 ft.)
5m (15 ft.) 44m (145 ft.)
5m (15 ft.) 44m (145 ft.)
5m (15 ft.) 44m (145 ft.)
5m (15 ft.) 44m (145 ft.)
9m (30 ft.) 44m (145 ft.)
9m (30 ft.) 44m (145 ft.)
2-11