Christie Roadie 25K User manual

User's Manual
Table of Contents
013-100209 Software Version 1.1 (08/05) Roadie 25K User’s Manual i
oadie
Section Contents Page
1.1 The Projector ....................................................................................................1-1
1.2 List of Components...........................................................................................1-3
1.3 Purchase Record and Service Contacts.............................................................1-3
1.4 Ethernet Settings for This Projector..................................................................1-3
1.5 Who Should Use This Manual..........................................................................1-3
2.1 Quick Setup ......................................................................................................2-1
2.2 Installation Considerations................................................................................2-5
2.3 Projector Position and Mounting....................................................................2-10
2.4 Installing a Lens, Lamp & Cooling.................................................................2-16
2.5 Connecting Sources ........................................................................................2-22
2.6 Connecting Communications..........................................................................2-28
2.7 Connecting Multiple Projectors......................................................................2-32
2.8 Connecting the Ballast....................................................................................2-38
2.9 Initial Power-up ..............................................................................................2-40
2.10 Maximizing Light Output ...............................................................................2-41
2.11 Basic Image Alignment...................................................................................2-41
2.12 Boresight Adjustment .....................................................................................2-42
2.13 Internal Optical Adjustments ..........................................................................2-45
2.14 Remote Keypad Protocols and Conversion.....................................................2-46
3.1 Projector Basics................................................................................................3-1
• Components/Features.................................................................................... 3-1
3.2 Using the Keypads............................................................................................3-5
3.3 Power-up Procedure / Checklist .....................................................................3-13
3.4 Power-down Procedure...................................................................................3-14
3.5 Navigating the Menus.....................................................................................3-15
3.6 Using Inputs and Channels .............................................................................3-18
3.7 Adjusting the Image........................................................................................3-24
3.8 Adjusting System Parameters and Advanced Controls...................................3-38
3.9 Working with PIP...........................................................................................3-48
3.10 Working with the Lamp..................................................................................3-51
3.11 Status Menu....................................................................................................3-58
3.12 Using Multiple Projectors...............................................................................3-59
3.13 Remote Control of the Projector.....................................................................3-69
3.14 Working with the Lenses ................................................................................3-70
3.15 Error Conditions.............................................................................................3-71
4.1 Warnings and Guidelines..................................................................................4-1
4.2 Maintaining Proper Cooling .............................................................................4-3
4.3 Maintenance and Cleaning................................................................................4-4
4.4 Replacing the Lamp and Filter..........................................................................4-6
4.5 Replacing a Lens.............................................................................................4-12
continued…
1Introduction
2
Installation &
Setup
3
Basic
Operation
4
Maintenance

TABLE OF CONTENTS
ii Roadie 25K User’s Manual
5.1 Power................................................................................................................5-1
5.2 Lamp.................................................................................................................5-1
5.3 Ethernet.............................................................................................................5-2
5.4 Displays ............................................................................................................5-2
6.1 Specifications....................................................................................................6-1
A Glossary...........................................................................................................A-1
B Remote Keypad................................................................................................B-1
C Serial Communication Cables..........................................................................C-1
D Throw Distance................................................................................................D-1
E System Integration ........................................................................................... E-1
F Optional Input Modules................................................................................... F-1
NOTE: Due to continuing research, all information in this manual is subject to change without notice
5
Troubleshooting
6Specifications
Appendices

Section 1
Introduction
Roadie 25K User’s Manual 1-1
The Roadie 25K is a
revolutionary split-body
DMDprojector
utilizing 3-chip Digital
Light Processing

(DLP

) technology
from Texas Instruments.
Its unique separation of
projection head and
lamp ballast means both
parts can be flown and
rigged with greater ease,
creating the ideal
solution for challenging
rental/staging
installations and tight
spaces. With 2048 x
1080 resolution, light
output of up to 25000
ANSI lumens, and 10-bit image processing all standard, Roadie 25K images are
stunning in their size, brilliance and quality. This tough, user-friendly projector is
built for frequent transport and quick setup, even on sprawling networks—perfect for
any large audience venue demanding effortless installation and operation.
General
 DLP

3-chip electronics with true 2048 x 1080 native resolution
 Split-projector design; ballast is separate from projection head
 Versatile electronic and optical scaling to automatically maximize the display
 10-bit digital processing (8-bit for interlaced high-definition video)
 Can be rigged, flown and/or stacked with adjustable FredFramehardware
Lamps / Light Output
 Choice of 4 Xenon bubble lamp sizes and ratings
 Up to 25000 ANSI lumens (6kW lamp)
 Standard achievable contrast ratio 650:1 ANSI, up to 1800:1 full field on/off
 LampLOC

motorized lamp alignment (auto or custom adjustment)
 LiteLOC

for maintaining brightness over time
 Internal electromechanical shutter for quick picture mute and black stand-by
 Optional internal optical components for improved contrast ratio and/or wider
color gamut
1.1 The Projector
Roadie 25K
Main Features '

INTRODUCTION
1-2 Roadie 25K User’s Manual
Inputs
 One analog RGBHV/YPbPr input with 5 BNCs
 One DVI-I input for either digital RGB/YCrCb or analog RGB/YPbPr signals
 One analog composite-video input, one analog S-video input
 Built-in multi-standard decoder (NTSC, NTSC 4.43, PAL, PALM, PALN, PAL60, SECAM)
 One Dual SD/HD-SDI input (installed in one of two optional input slots.)
 Up to 220 MHz pixel rate
 Compatible with all current HDTV formats
 Motion adaptive deinterlacing of 50 fps- and 60 fps-originated standard and high-
definition interlaced sources
 Inverse telecine deinterlacing of film-originated standard and high-definition
interlaced material with 3:2 pulldown (60 fps) or 2:2 pulldown (50 fps).
Lenses
 Choice of standard high-brightness zoom lenses (ranging from 1:1 up to 8.5:1)
 Choice of optional high-contrast lenses (ranging from 1.25 up to 8.5:1)
 Manually adjustable zoom, focus and H/V offsets
 Optional lens mount for 1.25x anamorphic lens producing 2.39:1 “scope” images
Special Display Functions (SELECTED)
 Auto setup
 Picture-in-Picture
 Electronic brightness uniformity, whitelevel edge blending and color matching
 Optional image warping/blending for unusual angles and/or screens (ChristieTWIST)
Communications and Diagnostics
 3 standard keypads: built-in and convertible IR-to-wired remote
 Front and rear IR sensors
 Ethernet, RS232, RS422 and GPIO control ports
 Built-in ChristieNETconnectivity and control
 LED for 2-digit error codes, plus LCD for text-based status display
 Large status light for long-distance alerts
 Double voltmeters: one for lamp ballast, one for projection head
PROCESSING & PROJECTION: The Roadie 25K accepts a variety of signals for
projection in large screen applications. High brightness light is generated by a short-
arc Xenon lamp, then modulated by three DMD (Digital Micromirror Device) panels
responding to incoming data streams of digitized red, green or blue color
information. As these digital streams flow from the source, light from the responding
“on” pixels of each panel is reflected, converged and then projected to the screen
through one or more front lenses, where all pixel reflections are superimposed in
sharp full-color images.
STACKING & RIGGING: A projector secured in the optional FredFramecan be
stacked and, if desired, flown with another framed projection head using the Roadie
25K Stacking and Rigging Kit and standard rigging techniques to secure the two
frames together. Each frame provides precision roll, pitch and yaw adjustments of the
projector for precision image alignments. Corresponding lamp ballasts can be located
up to 100 feet away, flown or not.
How The Pro
j
ector Works '

INTRODUCTION
Roadie 25K User’s Manual 1-3
The following components make up a complete Roadie 25K system (see Figure 3.1):
 Projection Head. Includes:
• Line cord
• Rental/staging remote keypad (incl. batteries for IR use, and cable for wired use)
• Security keys for lamp and igniter service access, plus assorted Allen keys
• Roadie 25K User’s Manual
 Lamp Ballast (7 kW)
 Cable kit (incl. 2 lamp power cables and 2 communication/control cables)
 Extractor Kit, 50/60 Hz
 Choice of lamp kit (incl. protective gear)
 Choice of lens (Anamorphic lens and mount are also both optional)
 FredFrame(Optional. Includes fork lift rails for bottom.)
Whether the projector is under warranty or the warranty has expired, Christie’s
highly trained and extensive factory and dealer service network is always available to
quickly diagnose and correct projector malfunctions. Complete service manuals,
updates, and service instructions are available to service technicians for all projectors.
Should you encounter a problem with any part of the projector and require assistance,
contact your dealer or one of the Christie service depots listed on the back cover of
this manual. If you have purchased the projector, fill out the form below and keep
with your records.
Purchase Record
Dealer:
Dealer Phone Number:
Projection Head Serial Number:
First Lamp Serial Number:
Lens Serial Number:
Lamp Ballast Serial Number:
Purchase Date:
* NOTE: Both serial numbers are located at the rear of the product.
At manufacture, the following Ethernet settings were defined in the projector:
Factory-set Ethernet Settings for This Projector
Default Gateway n/a
DNS Server n/a
Projector IP Address 0.0.0.0 (enables use of DHCP server for IP address)
Subnet Mask 255.255.255.0 (fixed)
USERS / OPERATORS: This manual is intended for trained users authorized to operate
professional high-brightness projection systems in a variety of environments. Such
users may also be trained to replace the lamp and air filter, but cannot perform any
other functions inside the product enclosures.
SERVICE / INSTALLERS: Only trained and qualified Christie service technicians
knowledgeable about all potential hazards associated with high voltage, ultraviolet
exposure and high temperatures generated by the lamp and associated circuits are
authorized to perform service functions inside the product enclosures.
1.2 List of
Components
1.3 Purchase
Record, and
Service
Contacts
1.4 Ethernet
Settings for
This Projector
1.5 Who Should
Use This
Manual

Section 2
Installation & Setup
Roadie 25K User’s Manual 2-1
This section explains how to install, connect, and optimize the projector for smooth operation. For more
comprehensive instructions and operating details, refer to the remaining sections of the manual.
Follow these steps for quick setup of the projector in a basic front mount position.
Position the Projection Head
Locate the projection head at an appropriate throw distance (projector-to-screen
distance) and vertical position. See 2.3, Projector Position and Mounting and
Appendix D. Make sure that the projector is level from side-to-side, and do not invert.
Locate the lamp ballast so that its 4 cables can reach the rear of the projection head.
Install Lamp, Lens and Heat Extractor
Refer to 2.4, Installing a Lens, Lamp & Cooling for instructions.
Connect a Source
Connect your desired source to the
appropriate connector(s) on the main
input panel located on the side of the
projector (lens side).
Connect to Lamp Ballast and Power
WARNINGS
• Connect all 4 cables to the projection head prior to
turning the ballast breaker on.
• Follow all labeling exactly.
HEAD-TO-BALLAST: Connect all 4 ballast cables—two DC power cables, and 2
communication/control cables—between the projector rear and lamp ballast.
See Figure 2.1.
2.1 Quick Setup
STEP 1 '
STEP 2 '
STEP 3 '
STEP 4 '

INSTALLATION AND SETUP
2-2 Roadie 25K User’s Manual
Figure 2.1. Connect Head to Ballast
BALLAST-TO-AC: See Figure 2.2. Connect the ballast’s integral 3-phase 30 amp line
cord to your AC supply—you may have to modify the plug for your site.
NOTE: Before connecting the ballast to AC, a qualified electrical technician must
make sure the ballast’s plug type and Input Power Range Switch match the line
voltage available at the site. Remove the lamp ballast cover to access the switch and
determine its setting—toggle LEFT for 200 VAC supplies, toggle RIGHT for 400
VAC supplies (factory default=200 VAC). Modify the plug type as necessary—as a
delta load with safety ground, it has no neutral.
Confirm that the ballast’s 3-phase status lights are on and that the adjacent voltmeter
displays an acceptable AC level for your ballast and region. See Section 6,
Specifications for details. Then set the ballast AC on/off switch to ON and listen for

INSTALLATION AND SETUP
Roadie 25K User’s Manual 2-3
the internal cooling fan start-up. NOTE: There is no other indication of “ballast ON”
status.
Figure 2.2. Ballast Connection and Power-up
HEAD-TO-AC: Connect the Christie-
supplied IEC 320 (220V) 15-amp
line cord to your AC supply. Do not
substitute other cords. Input power
required is 200 - 240 VAC
(nominal), 50 to 60 Hz @ 3 amps
for 208 V.
WARNING
Do not attempt operation if the
AC level is not within the
specified voltage and power
range for the projection head.
EXTRACTOR: Also plug the
extractor fan into the projector. See
2.4, Installing a Lens, Lamp, &
Cooling
At this point, the projection head is
in a type of “standby” mode only—the voltmeter should both display the incoming
voltage and the adjacent main PROJ. STATUS light should be yellow, and light engine
compartment fans are running but the rest of the projection head is off.
Set Lamp Type
WARNING
Explosion hazard. Keep the projection head OFF until
you have defined which lamp type is installed.
STEP 5 '

INSTALLATION AND SETUP
2-4 Roadie 25K User’s Manual
Before powering up the projector and igniting the lamp, you must define in memory
which size lamp is installed, otherwise you risk severely overdriving or underdriving
a lamp. Record on the “Lamp Installed” label too.
1. Press
Menu
.
The Status
Display at the
rear of the
projector will
show a
“Lamp Size”
of 2000,
3000, 4500 or
6000 watts,
depending on
its last
setting.
Factory
default=6000.
2. Enter either
the Lamp Password (see Figure 2.3), or the Christie service password. NOTE:
Password is required unless the “Enable Password” service option has been
turned off.
3. Use to select which lamp is currently installed. Make sure the lamp type
is also indicated on the lamp door label—use a small sticker from the front cover
of this manual, or mark with a pen.
4. When the Status Display shows the correct lamp type, the projector and lamp can
be turned on.
NOTE: Lamp size can also be changed in the Service menu (Service password
required) if the projector is running, but will not take effect until the next power-up.
Whenever possible, define the lamp size before igniting the lamp.
Turn the Projector and Lamp ON
Using either the built-in or remote keypad, do one of the following to turn the
projector on and ignite the lamp.
• Press and hold for at least two seconds
—or—
• Press
—or—
• Press
The main PROJ. STATUS light at the rear of the projector should be green when the
projector is up-and-running. For best results, let the projector warm up for about five
minutes.
Select the Source
Using either the remote or built-in keypad, press
Input 1
,
Input 2
,
Input 3
,
Input 4
,
Input 5
or
Input 6
to select and display the image for the corresponding source connected in Step 3. The
display will resize as needed, producing an image as large as possible for the type of
source present.
Figure 2.3. Setting Lamp Size
STEP 6 '
STEP
7
'

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 regulates the voltage drop that occurs over distance, and ensures that adequate
voltage reaches the lamp. Particularly in projectors rented for temporary installations,
this setting may have to be changed from its last use. Adjustment range is 2-30m
(6½-100 ft.).
Press
Auto
Setup
and/or
Menu
to refine other display parameters as necessary. See also 3.6,
Using Inputs and Channels.
Although the Roadie 25K is carefully engineered to deliver an exceptional quality
high brightness, high resolution output, your final display results could still be
compromised if the projector is improperly installed. This subsection discusses issues
to consider before proceeding with a final installation. Even for temporary
installations, this information will help you to better understand what may be done to
ensure optimized images.
Front Screen Installations
This projector is intended for use with flat or slightly curved screens, front or rear,
ranging from about 5 meters (16 ft.) to 25 meters (82 ft.) wide. Although flat screens
generally offer a low gain similar to a matte white wall paint—approximately 1 with
a viewing angle just under 180°—and are considered most effective when ambient
light is low, this difference in gain may be negligible given the very high light output
from this projector. In addition, incident light reflects equally in all directions so the
audience can see the display from more acute viewing angles. See Figure 2.4.
Figure 2.4. Audience Coverage with a Flat Screen
NOTE: Roadie 25K lenses are designed primarily for use with flat screens, but the
projector’s depth-of-field range allows the lens to be focused on mildly curved
screens as well. While focus remains sharp in the corners, there may be significant
pincushion distortion, primarily at the top of the screen.
STEP 8
'
STEP 9 '
2.2 Installation
Considerations
Screen T
yp
es '

INSTALLATION AND SETUP
2-6 Roadie 25K User’s Manual
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 the front of the
screen. This reduces it in other areas, and creates a viewing cone similar to that of a
curved front screen installation.
To summarize, optical screens are better suited for brightly lit rooms where the
audience is situated within the viewing cone. Diffused screens may be better suited
when a wide viewing angle is required but there is low ambient room lighting.
Screen size (image size) may be up to 145 feet across, depending on your lens and
ambient light level. Choose a screen size appropriate for your lens and application.
Keep in mind that if the projector will be used to display much text information, the
image size must allow the audience to recognize all text clearly. The eye usually sees
a letter clearly if eye-to-text distance is less than 150 times the height of the letter. In
other words, small text that is simply located too far from the eye will be illegible no
matter how sharply and clearly it is displayed.
NOTE: Screens with aspect ratios (proportion) of 4:3 are typically specified by
diagonal size, but screens having other aspect ratios—such as the 2048 x 1080 of the
Roadie 25K— are usually specified by their horizontal width. See below.
Table 2.1. Matching Lenses to Screen Size
Lens Type Screen Width (<—>)
1:1 fixed 14-145 ft.
1.25 – 1.45:1 zoom 10-121 ft.
1.45 – 1.8:1 zoom 8-102 ft.
1.8 – 2.4:1 zoom 6-83 ft.
2.2 – 3.0:1 zoom 5-66 ft.
3.0 – 4.3:1 zoom 3-49 ft.
4.3 – 6.0:1 zoom 2.5-35 ft.
5.5 – 8.5:1 zoom 2-27 ft.
Aspect ratio describes the proportion of the display and is expressed as the ratio of
width to height, such as “5:4” or “16:9”. Typical aspect ratios range from 1.25 to
2.35—the higher the value, the wider or “less square” the image. See Table 2.2.
Table 2.2. Typical Aspect Ratios
Application Aspect Ratio
SXGA 1.25 (5:4)
35mm filmstrip 1.32 (4:3)
NTSC Video / XGA 1.33 (4:3)
PAL Video / XGA 1.33 (4:3)
HDTV Video 1.78 (16:9)
Letterbox Video / “Flat” 1.89 (2048 x 1080)
Cinemascope 2.35
Screen Size '
Screen As
p
ect Ratio '

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 signal with a 16:9 aspect is largest on a 16:9 screen.
Figure 2.5. Aspect Ratios: Images vs. Screens
As shown in Figure 2.5, an obvious mismatch between source material and screen is
characterized by “black bars” on both sides of the image (if the screen is wider than
the source material) or above and below the image (if the source material is wider—
typically called a letterbox display). The black bars are unused display pixels and, in
most installations, are masked or hidden behind panels or curtains. Alternatively, if
the area of unused pixels is considered minimal, you may prefer to use the projector’s
software control to slightly stretch the image either horizontally or vertically—
enough to utilize the remaining pixels while not noticeably distorting the image.
Using a Cinema “Flat” Screen (1.85 aspect ratio)
By default, source signals closely matching the projector’s 2048 x 1080 (a.k.a., 1.89)
display area will fill this area accordingly. Signals with lower aspect ratios will
automatically scale to be as large as possible while maintaining their original aspect
ratio. For details on resizing behavior, see 3.7, Adjusting the Image.
Displaying Both ‘Flat” and “Scope”
As an example, two standard types of displays common in theatres—flat and scope—
differ in their width-to-height aspect ratio as shown below:
Figure 2.6. Typical Wide Formats
Achieving either of these displays from a variety of incoming source material (that
may or may not be in the same format) depends on proper settings in the projector as
well as certain room conditions.
Projector Variables: Electronic and Anamorphic Resizing
The native resolution of the projector (1.89) closely matches the aspect ratio of “flat”
source material (1.85). Wider scope material, however, may be “squeezed”

INSTALLATION AND SETUP
2-8 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 incoming data—
for example, flat vs. scope—on a
single screen, you can use physical
masking to cover the unused
edge(s) of the screen. These
movable panels are most commonly
installed along the top edge of the
screen, changing the height of the
screen but not its width, and are
most frequently used in permanent
installations such as theatres. The
screen shown in Figure 2.8 at right
also has a bottom mask.
•Add masks for “scope” displays
•Remove masks for “flat” displays
Alternatively, masks may be installed at each
side of the screen in order to change the width
of the screen but not its height.
•Add masks for “flat” displays
•Remove masks for “scope” displays
In some cases, the room will have both side
and top/bottom masking installed. This
arrangement is the most flexible of all.
Refer to Figure 2.10 for a summary of the basic factors affecting wide displays in a
variety of rooms.
Figure 2.8. Top Masking for Scope Images
Figure 2.9. Side Masking for Flat

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

INSTALLATION AND SETUP
2-10 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 image. Images may then appear washed out and less vibrant.
In general, avoid or eliminate light sources directed at the screen.
Other considerations and tips which 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. Changes in
temperature may cause drifts in the projector circuitry which may affect
performance.
• Keep the projector away from devices which 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.
Installation type, the available screen, and ambient lighting all affect where the
projector should be positioned. In addition, both throw distance (the distance between
the projector and screen) and vertical position (the height of the projector in relation
to the screen) must be determined for every new installation. Both depend on the
screen size and lens type you are using. Make sure that the room can accommodate
the required location of the projector for the chosen screen size.
Throw distance is the distance between the projector and the screen (Figure 2.11).
For any installation, placing the projector at an accurate throw distance is necessary
in order for the image size to closely match your screen – the farther the projector is
from the screen, the larger the image. With zoom lenses, you’ll want to know the
approximate minimum and maximum image sizes possible from a given throw
distance so that the most appropriate lens is installed at the site (throw distance /
screen width = throw ratio).
A
mbient Li
g
htin
g
'
Other Considerations '
2.3 Projector
Position and
Mounting
Throw Distance '

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 1:1 lens, proper throw distance will be approximately the same as screen
width. Once you know your screen width and lens you can estimate throw distance
needed. Or, if you know throw distance, you can determine what images sizes are
possible with a given zoom lens.
IMPORTANT: For proper placement in any installation, use the throw distance
formula provided for your lens (Appendix D). In addition, please keep in mind that
due to lens manufacturing tolerances for lens focal length, actual throw distance
can vary ±5% or more between lenses described as having the same throw ratio.
For complete throw distance information, consult Appendix D.
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 describes the elevation of the projector in relation to the screen.
For many typical rental/staging installations, the projector will be above screen
center. An ideal vertical position helps ensure that images will be accurately
rectangular in shape rather than distorted into a keystoned shape with non-parallel
sides, and that image focus and brightness both remain optimized.
NOTE: Proper vertical position is recommended, although vertically keystoned
images (i.e., those with sloping sides) can be corrected in software. See Section 3.
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).
Vertical & Horizontal '
Position

INSTALLATION AND SETUP
2-12 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 each, as can long throw distances.
ALTERNATIVE METHOD OF DESCRIBING VERTICAL OFFSET: Offset can also be
specified as the distance traveled from lens center (such as 270 pixels) and expressed
as a percentage (270 pixels=50%) of half of the image height. This concept of image
movement is illustrated in the example below:
Figure 2.13. Example of Alternative Offset Specification
For any projector, if you find that you cannot raise or lower the image enough using
mechanical vertical offset, try adjusting V-Position in the Size and Position menu

INSTALLATION AND SETUP
Roadie 25K User’s Manual 2-13
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 image from this projector can
be moved by a distance of 410 pixels, resulting
in up to 70% of the image displayed on one side
of lens center (Figure 2.14).
Note that the positioning shown at right is often
mistakenly referenced as “70% offset” but it is
not—it is 40% offset derived as 410/1024 x
100. A 70% offset is explained below and
shown in Figure 2.15.
ALTERNATIVE METHOD OF DESCRIBING
HORIZONTAL OFFSET: Horizontal offset
can also be specified as the distance
traveled from lens center and expressed as
a percentage of half of the image width.
For example, an offset spec of 70% means
a centered image can be moved by a
distance of 717 pixels, resulting in 85% of
the image projected to one side of lens
center and 15% on the other. See right.
NOTE: Example only. Beyond range for
this projector.
For front projection without suspending, mount the projector on a strong supporting
structure or cart. Take special care if using a mobile cart—avoid sudden stops, force
and uneven surfaces that may cause the top-heavy cart to lurch and overturn.
Make sure your mounting structure is reasonably level, then adjust one or more
projector feet as necessary to fine-tune.
Figure 2.14. Horizontal Offset
Range
Figure 2.15. Alternative Offset
Specification
Floor Mounting '
and Levelin
g

INSTALLATION AND SETUP
2-14 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 installation, you can tilt the
front end of the projector up or
down as much as 15° (see right).
Likewise, side-to-side tilt must not
exceed 15° (see Figure 2.17
below). This limit ensures safe
lamp operation and proper position
of the liquid cooling reservoir in the projector.
WARNING
Tilt only as shown.
Figure 2.17. Side-to-Side Tilt
Special Orientations
Since this projector cannot be inverted or tilted beyond 15°, all installations are front-
mount and require the “Front” Image Orientation setting in the Configuration menu.
Figure 2.16. Adjusting the Feet
Tilting and Special '
Orientatio
n
s