Projector Christie Roadie 25k User Manual

 INSTALLATION AND SETUP 
 
Roadie 25K User’s Manual 2-5 
Adjust the Lens 
Turn the focus knob to sharpen the image. Adjust the zoom ring on the lens to 
increase or decrease image size (not available when using the 1:1 fixed lens). If 
desired, use the horizontal and/or vertical offset knobs to shift the image location. 
Set Cable Length 
In the Lamp menu, set the “Cable Length (m)” slidebar to match the length of the 
high-voltage DC cables connected between your lamp ballast and projection head. 
This...

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Rear Screen Installations 
There are two basic types of rear screens: diffused and optical. A diffused rear screen 
has a surface which spreads the light striking it. Purely diffused screens have a gain 
of less than 1. The main advantage of the diffused screen is its wide viewing angle, 
similar to that of a flat screen for front screen projection. Optical rear screens take 
light from the projector and redirect it to increase the light intensity at...

 INSTALLATION AND SETUP 
 
Roadie 25K User’s Manual 2-7 
Although image size and aspect ratio can be adjusted using projector software, it is 
still ideal to use a screen with an aspect ratio that closely matches your likely source 
material. You can then more easily fill the screen with the image without restricting 
either image size or content. For example, standard video from a VCR has a 4:3 ratio 
(approximately) and can fill a 4:3 screen without side-to-side stretching, whereas a 
high-definition...

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Roadie 25K User’s Manual 
electronically—that is, it is distorted into a narrower area (characterized by unusually 
thin people) so that its pixels can then be stretched horizontally through the 
anamorphic lens to regain the full and properly proportioned 2.39 display. This 
optical widening can stretch the image by approximately 25%. See Figure 2.7. 
 
Figure 2.7. Typical Method for Achieving “Scope” 
Masking Options 
In order to conveniently present 
different types of...

 INSTALLATION AND SETUP 
 
Roadie 25K User’s Manual 2-9 
 
Figure 2.10. Switching Between Flat & Scope Displays 
 
  

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Roadie 25K User’s Manual 
The extraordinary brilliance of this projector is certainly well suited for locations 
where ambient lighting might be considered less than ideal for projection. Even a 
typical room or large auditorium fully lit 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...

 INSTALLATION AND SETUP 
 
Roadie 25K User’s Manual 2-11 
 
Figure 2.11. Estimating Throw Distance: Example 
NOTE: If your projector is slightly tilted in relation to the screen, typical for large 
venues and/or elevated installations, throw distance still represents the smallest 
measurement between the screen and projector. 
As shown in Figure 2.11, throw distance is approximately equal to the horizontal 
width of the screen multiplied by the type of lens you are using. For example, if you 
are using a...

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Roadie 25K User’s Manual 
 
Figure 2.12. Vertical Offset Range 
NOTES: 1) Assumes full 2048 x 1080 display. 2) Recommended offset range can 
sometimes be exceeded, however this may affect image quality. 3) Due to 
manufacturing tolerances, an offset range can vary ±5% or more between lenses 
described as having the same throw ratio, between projectors, and with any 
lens/projector combination. 4) Simultaneous horizontal and vertical offset can limit 
the adjustment range of...

 INSTALLATION AND SETUP 
 
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when displaying at less than the minimum size (see 3.7, Adjusting the Image). If 
images remain keystoned or exhibit uneven brightness, the projector may simply be 
too high or low in relation to the screen. Relocate for optimized performance. 
THE HORIZONTAL POSITION of the image can 
be manually offset—that is, shifted left or right 
of lens center—by using the horizontal offset 
knob on the lens mount. Starting with no offset, 
the 2048 x 1080...

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Roadie 25K User’s Manual 
 WARNING  
Do not invert this projector. 
Adjusting the Feet 
For installations on a floor or suitable 
supporting structure, a single 
projection head should rest firmly on 
its feet. There is no need for the 
FredFrame
 unless stacking with 
another Roadie 25K, or unless you 
decide to rig and fly the projector. 
To adjust the height and level of the 
projector, extend or retract the feet by 
rotating them. 
See Figure 2.16. 
Tilting 
For any...