Christie DLV1280 DX User manual

DLV1280 DX User's Manual
Table of Contents
54-017137-06P Software Version 2.1 (10/02) DLV1280 DX User’s Manual iii
Section Contents Page
1.1 The Projector ....................................................................................................1-1
1.2 Components ......................................................................................................1-2
1.3 Purchase Record and Servicing.........................................................................1-2
2.1 Quick Setup.......................................................................................................2-1
2.2 Installation Considerations................................................................................2-2
2.3 Projector Position and Mounting ......................................................................2-7
2.4 Source Connections ........................................................................................2-12
2.5 Power Connection...........................................................................................2-19
2.6 Operating Orientation .....................................................................................2-19
2.7 Leveling..........................................................................................................2-20
2.8 Zoom, Focus & Lens Offset............................................................................2-20
2.9 Serial Port Connections...................................................................................2-20
2.10 Keypad Protocols and Conversion..................................................................2-27
3.1 Overview...........................................................................................................3-1
3.2 Projector Basics................................................................................................3-1
3.3 Using the Keypad..............................................................................................3-3
3.4 Navigating the Menus.....................................................................................3-11
3.5 Using Inputs and Channels..............................................................................3-15
3.6 Adjusting the Image........................................................................................3-21
3.7 Configuring System Parameters......................................................................3-37
3.8 Working With the Lamp .................................................................................3-44
3.9 Projector Status...............................................................................................3-47
3.10 Using Multiple Projectors...............................................................................3-47
3.11 Error Conditions .............................................................................................3-59
4.1 Warnings and Guidelines..................................................................................4-1
4.2 Cleaning............................................................................................................4-3
4.3 Replacing Keypad Batteries..............................................................................4-3
4.4 Replacing the Lamp and Filter..........................................................................4-4
4.5 Replacing the Lens............................................................................................4-8
4.6 Troubleshooting..............................................................................................4-11
5.1 Specifications....................................................................................................5-1
A Glossary...........................................................................................................A-1
B Keypad Reference............................................................................................B-1
C Menu Tree........................................................................................................C-1
D Serial Communication Cables..........................................................................D-1
E Throw Distance................................................................................................ E-1
F Optional Input Modules................................................................................... F-1
NOTE: Due to continuing research, all information in this manual is subject to change without notice
1Introduction
2Installation &
Setup
3Operation
4Maintenance
5Specifications
6Appendices

Section 1
Introduction
DLV1280 DX User’s Manual 1-1
The DLV1280 DX projector is a professional quality DMDprojector using Digital
Light Processing(DLP) technology from Texas Instruments to achieve high-
brightness, high resolution multimedia and video projection. It is ideal for use in
control rooms and other multiple-screen applications demanding unsurpassed clarity,
consistency and reliability in critical “24/7”
environments. Designed specifically for
ease-of-setup and total image flexibility, the
versatile DLV1280 DX is fully compatible
with standard international video formats
and can interface with IBM-compatible
PC, Macintoshcomputers and
workstations. DLV1280 DX features include:
◊1280 x 1024 pixels true resolution, with other resolutions fully scaleable
◊Over 1500 ANSI lumens brightness
◊Over 750:1 full-field contrast ratio
◊Intuitive software controls for matched color and light output across multiple screens
◊Tandem horizontal and vertical sizing software control
◊Independent vertical stretch for changing aspect ratios
◊Choice of lamp modes for control of brightness and energy
◊Standard short-throw lens for image sizes from 5 to 30 feet (diagonal)
◊Display of NTSC, PAL and SECAM video input (requires optional decoder)
◊Display from PCs, VCRs, laser disc players, video cameras, etc.
◊Memory for up to 99 custom channels
◊Intuitive on-screen menus or hidden direct control
◊Remote keypad and controller and switcher compatibility
◊Input switching with remote keypad
◊Built-in RS-232 and RS-422 ports for computer control and networked projectors
◊Utilitarian and modular design for lower cost, quick setup and easy servicing.
The projector accepts data/graphics and video input signals for projection on to front
or rear flat screens. High brightness light is generated by an internal Xenon arc lamp,
then modulated by three DMD (digital micromirror device) panels that provide
digitized red, green or blue color information. Light from the “on” pixels of each
panel is reflected, converged and then projected to the screen through a single front
lens, where all pixels are perfectly superimposed as a sharp full-color image.
1.1 The Projector
DLV1280 DX
How The Pro
j
ector Works '

INTRODUCTION
1-2 DLV1280 DX User’s Manual
Included are an infrared (IR) remote keypad, line cord, a 9/64” hex socket ball driver,
and a DLV1280 DX User’s Manual. Make sure that you have everything.
Figure 1.1. Components
SHOWN WITH ADDED LENS
Whether the projector is under warranty or the warranty has expired, an extensive
factory and dealer service network is always available. Factory service technicians
are fully trained to quickly diagnose and correct projector malfunctions. Complete
service manuals and updates are available to service technicians for all projectors.
Should you encounter a problem with the projector and require assistance, contact
your dealer or the manufacturer. In many cases, any necessary servicing can be
performed on site.
If you have purchased the projector, fill out the information below and keep with
your records. In addition, make sure to complete the Product Registration at the Christie
website—this will ensure that you receive all future product communications promptly.
Purchase Record
Dealer:
Dealer Phone Number:
Projector Serial Number*:
Purchase Date:
Installation Date, if applicable:
* NOTE: The projector serial number is located on the projector's rear identification label
1.2 Components
1.3 Purchase
Record and
Servicing

Section 2
Installation & Setup
DLV1280 DX User’s Manual 2-1
This section explains how to install and set up the projector. If you are familiar with the projector and want to quickly
set it up for temporary use, follow the Quick Setup instructions below. For a more complete setup, follow the
instructions and guides covered in the remaining subsections.
NOTES: 1) The lens is not mounted when the projector is shipped from the factory. For instructions on how to install
or replace a lens, refer to 4.5, Replacing the Lens. 2) This manual assumes the optional decoder is installed.
Follow these steps for quick setup of the projector in a standard floor mount position.
Position the Projector
Set the projector at the expected throw distance (projector-to-screen distance) and
center the lens with the screen. See 2.3, Projector Position and Mounting and
Appendix E. Refer also to the dimensioned diagrams of the projector provided in
Section 5. Make sure that the projector is level from side-to-side (see 2.7, Leveling),
adjusting feet if necessary.
Connect a Source
Locate the main input panel at the rear of the projector. The lower left area, labeled
INPUT 1, accepts an RGB input via BNC connectors. The upper right area (assuming
an optional video decoder is installed) accepts a composite video at INPUT 3 or S-
video input at INPUT 4. Connect your source to the appropriate panel connectors.
Connect the Line Cord to AC Power
Connect the projector’s line cord to the AC receptacle at the lower right rear corner of the
projector and to proper AC. Input power required is 100 - 240 VAC, 50 to 60 Hz @ 9 amps
(@ 100 V). Use the line cord provided with the projector. See Section 5.
WARNING
Do not attempt operation if the AC supply and cord are not
within the specified voltage and power range. See Section 5.
Turn the Projector ON
Using the remote keypad, press Power* and hold for approximately 1 second to turn the
projector on (or press Power* ON ). Let the projector warm up for about five minutes.
The POWER LED, located in the lower right corner of the rear input panel, should
glow a steady green.
2.1 Quick Setup
STEP 1 '
STEP 2 '
STEP 3 '
STEP 4 '

INSTALLATION AND SETUP
2-2 DLV1280 DX User’s Manual
Select a Source
Using the remote keypad, press
Input1
,
Input2
,
Input3
, or
Input4
to select and display the
image for the source you connected in Step 2. The display will resize as needed,
producing an image as large as possible for the type of source present.
Adjust Image
•ZOOM: With the input image displayed, rotate the textured ring on the lens
barrel to increase or decrease the image size (this requires a zoom lens). If you
don’t have a zoom lens or you can’t adjust the image enough, the projector
may not be positioned properly for your screen size. Power down, unplug the
projector and move the projector in relation to the screen. See 2.3, Projector
Position and Mounting for details.
•FOCUS: At the lens opening, turn the focus tab to sharpen the image as well as
possible.
•OFFSETS: If the lens is centered with the screen but you still find it necessary
to shift the image, you can do so by slightly repositioning the lens mount
within the projector. See 2.3, Projector Position and Mounting (note: qualified
service technician required).
•OTHER: Press
Menu
to refine other display parameters as described in Section 3.
Although the DLV1280 DX delivers a high brightness, high resolution output, final
display quality could be compromised if the projector is improperly installed. This
subsection discusses issues you should consider before proceeding with a final
installation. Even if you do not intend to use the projectors in a fixed and permanent
installation, this subsection will help you to better understand what you can do to
enhance display performance.
Lifting or Hoisting
For any new installation, you may have to safely lift or hoist the projector into place.
Securely wrap hoisting cabling and safety straps around the whole projector. Attach
to the proper Christie ceiling mount only—never suspend or “fly” this model.
WARNINGS
Never stack projectors. The top projector could slide off
and cause injury or death. Never “fly” this model.
Choose the installation type which suits your needs: front or rear screen, floor mount
or inverted mount.
Front Screen, Floor Mount Installation
ADVANTAGES CONSIDERATIONS
•Easy to set up
•Can be moved or changed quickly
•Easy to access
•Shares floor space with audience
Front Screen, Inverted Mount (ceiling) Installation
ADVANTAGES CONSIDERATIONS
•Does not take up audience space
•Projector is unobtrusive
•Projector cannot be accidentally moved
•Installation is more permanent
•It is more difficult to access the projector
STEP 5 '
STEP 6 '
2.2 Installation
Considerations
Installation T
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INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-3
Rear Screen, Floor Mount Installation
ADVANTAGES CONSIDERATIONS
•Projector is completely hidden
•Projector is easily accessed
•Usually good ambient light rejection
•Requires separate room
Rear Screen, Inverted Mount (ceiling) Installation
ADVANTAGES CONSIDERATIONS
•Projector is completely hidden
•Usually good ambient light rejection
•Requires separate room
•Installation cost is usually higher
Rear Screen, Floor Mount with Mirror
ADVANTAGES CONSIDERATIONS
•Projector is completely hidden
•Usually good ambient light rejection
•Requires less space behind screen than
other rear screen installations
•Requires separate room
•Installation cost is usually higher
Front Screen Installations
While there are two basic screen types, flat and curved, generally flat screens are
recommended for this projector. Flat screens offer a gain of about 1 with a viewing
angle just less than 180°. Incident light reflects equally in all directions so the
audience can see the display from various angles. Because of the low gain, flat
screens are most effective when ambient lighting is reduced, although this difference
may be negligible given the high brightness output from this projector.
Figure 2.1. Audience Coverage with Flat Screen
NOTE: Lenses for this projector are designed primarily for use with flat screens, but
the projector depth-of-field range allows the lens to be focused on curved screens as
well. While focus remains sharp in the corners, there may be significant pincushion
distortion, primarily at the top of the screen.
Rear Screen Installations
There are two basic types of rear screens: diffused and optical. A diffused 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 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. A viewing cone, similar to that of a curved
front screen installation, is created.
Screen T
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INSTALLATION AND SETUP
2-4 DLV1280 DX User’s Manual
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 may be from 5 to 40 feet diagonal, depending on lens you are using. For
instance, a 1.2:1 lens can produce a 5 to 30 foot image size, whereas a 4-7:1 zoom
lens produces an 8 to 40 foot image size. Choose a screen size which is appropriate
for your lens and application—for this projector, it is likely the standard 1.2:1 lens.
Keep in mind that if the projector will be displaying much text information, the
image size must allow the viewer 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.
Small text located too far from the eye may be illegible at a distance no matter how
sharply and clearly it is displayed.
To fill a screen with an image, the aspect ratio of the screen should be equal to the
aspect ratio of the image. The aspect ratio of an image is expressed as the ratio of its
width to its height. Standard video from a VCR has a 4:3 (or 1.33:1) aspect ratio. For
example, to display a VCR output with a 4:3 aspect ratio onto a 10 foot (3m) high
screen, the width of the screen must be at least 13.3 feet (4m).
Note: Screen size is often specified as diagonal size. Traditionally, screens specified
by diagonal size have aspect ratios of 4:3. Screens with other aspect ratios (such as
those recommended for this projector) are not typically specified by diagonal size.
Aspect ratio describes the
proportion of the screen or
image, and is expressed as
the ratio of width to
height—such as “4:3” or
“5:4” (see right). Although
image size and image
aspect ratio can both be
adjusted quickly through
projector software, it is still
a good idea to choose a
screen aspect ratio which is most appropriate for your intended applications. Ideally,
to exactly fill a screen with an image, the aspect ratio of the screen should be the
same as the aspect ratio of the image, which can depend on the source in use. For
example, standard video from a VCR has a 4:3 ratio (approximately), whereas a high
resolution graphics signal typically has a 5:4 aspect ratio. By default, DLV1280 DX
images will be as large as possible and, with the exception of graphics sources, will
maintain their aspect ratio.
Note that with a few exceptions, sources with less than 1280 x 1024 resolution have a
4:3 aspect ratio. The normal aspect ratio for 1280 x 1024 sources is 5:4.
Screen Size '
Screen As
p
ect Ratio '
Figure 2.2. Aspect Ratios of 4:3 and 5:4

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-5
Using a 5:4 Screen (recommended)
With one exception, XGA images will—
by default—resize to 5:4 and fill an
SXGA screen. The exception (illustrated
in Figure 2.3) is that video signals will
retain their 4:3 aspect ratio—to fill the
screen, increase Vertical Stretch in order
to slightly expand the image at the top
and bottom. For details, see 3.6,
Adjusting the Image.
Using a 4:3 Screen
If you are using a 4:3 screen, images will—by default—slightly overlap the screen
vertically. To remedy, reduce Vertical Stretch so that the “too tall” 5:4 image no
longer spills over the top or bottom of the screen (Figure 2.4). This control eliminates
the need for simply moving the projector father from the screen, which would result
in black borders for all sources. See 3.6, Adjusting the Image for details.
NOTE: The Vertical Stretch adjustment may soften the image slightly, but is rarely
noticeable.
Figure 2.4. Using a 4:3 Screen for a Mix of 5:4 and 4:3 Images
The high brightness output of this projector is certainly well suited for locations
where ambient lighting is less than optimum for projection, yet there are still many
simple things you can do to further optimize your installation.
Visiting a movie theater can give you an idea of what makes an ideal projection
environment. Walls, floors and furnishings are dark and matte finished. A projection
room should not have white reflective ceilings or non-directional lighting such as
fluorescent lights. The white ceiling spreads light, making the room appear brighter.
Keep lighting and reflections to a minimum.
If it is not possible to eliminate fluorescent lights, consider using incandescent spot
lighting or parabolic reflectors ("egg crates") to direct light down to the floor. Light
dimmers or rheostats allow further control.
Outside windows are undesirable in any projection room. A small crack between
curtains on a sunny day can wash out a projected image. If you do have windows,
make sure that window coverings are opaque and overlapping — some window
coverings are designed to provide up to 100 percent blockage of outside light.
Ideally, the material should have a matte finish.
Figure 2.3. Adjusting a Video Image
Ideal Room Li
g
htin
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'

INSTALLATION AND SETUP
2-6 DLV1280 DX User’s Manual
To minimize the effects caused by unwanted light from door and aisle ways,
carefully choose the position of your projector and screen. Figure 2.5 shows an
installation where poor screen placement allows too much unwanted light to enter the
screen. In Figure 2.6, screen and the projector are positioned so that unwanted light is
minimized.
Figure 2.5. Poor Screen Placement
Figure 2.6. Better Screen Placement
Even with all lighting removed it is still possible that room reflections within the
room can slightly degrade the image. Light from the projection screen should be
absorbed by the ceilings, walls and floors so that it will not be reflected back to the
screen. Again, keep reflective surfaces to a minimum.
Here are some other considerations and tips which can help you improve your
installation:
•Ventilation is an important factor when preparing a projection room. The ambient
temperature should be kept constant and below 35°C (95°F). Keep the projector
away from heating and/or air conditioning vents. Changes in temperature can
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 are slide projectors,
speakers, power amplifiers, elevators, etc.
Other Considerations '

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-7
•For rear screen applications, less space is required if a mirror is used to fold the
optical path.
•Choose the right screen size for the application:
◊As screen size increases, magnification increases and reduces brightness.
Select a screen size which is appropriate for the venue, but not larger
than that required.
◊Installing a large screen in a small room is similar to watching television
close up; too large a screen can overpower a room. A good rule of thumb
is to be no closer than 1.5 times the width of the screen.
◊Larger screens require greater attention to lighting conditions.
•When laying out the projection room, consider positioning the projector and
screen in a manner which will achieve maximum audience coverage and space
efficiency. For example, placing the screen along the larger wall in a rectangular
room will reduce audience coverage. Figure 2.7 shows two examples of how
audience coverage is maximized.
Figure 2.7. Screen Locations for Maximum Audience Coverage
Installation type, screen type, and lighting all affect where the projector is 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 position of the
projector for the chosen screen size.
Throw distance is the distance between the projector's front feet and the screen. For
any installation, an accurate throw distance must be determined in order for the
image to be of the right size for your screen–the farther the projector is from the
screen, the larger the image.
NOTE: If your projector is tilted in relation to the screen, as is sometimes the case
for large venues or elevated installations, throw distance still represents the smallest
measurement between the screen and front feet.
2.3 Projector
Position and
Mounting
Throw Distance '

INSTALLATION AND SETUP
2-8 DLV1280 DX User’s Manual
Throw distance is roughly equal
to the horizontal width of the
screen multiplied by the type of
lens you are using. For example,
if you are using a 1.2:1 lens,
proper throw distance will be
approximately 1.2 xthe screen
width. Once you know your
screen size and lens, you can
estimate throw distance needed
(see example in Figure 2.8).
IMPORTANT: For proper
placement in an installation,
always refer to the throw distance formula and/or graph for your lens type as listed
in Appendix E. 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.
THE VERTICAL AND HORIZONTAL POSITION of the projector in relation to the screen
also depends on the size of the screen and the lens type. Correct position helps ensure
that images will be rectangular in shape rather than keystoned (having non-parallel
sides) and that image focus and brightness both remain optimized. Ideally, the
DLV1280 DX lens should be centered with the screen.
If necessary, the image can then be manually offset—that is, moved up/down or
left/right—by making a slight mechanical adjustment to the lens mount (essentially
repositioning the lens within the projector).
WARNING
Qualified service technician required.
To offset the image (Figure 2.9):
1. Center the lens with the screen as well as possible—refer to dimensions on
page 5-3 if necessary. To shift image position slightly, continue with the
remaining steps.
2. Remove the front bezel (6 screws).
3. Loosen 4 mounting screws (½ turn only) around the front perimeter of the lens
mount. Do not loosen more than ½ turn, or you will create too much “play”.
4. With a flat screwdriver, pry in the adjustment slots as necessary to slide the
lens mount in the direction desired (maximum amount of movement in any
direction is approximately 1/8”).
•To move the image up or down, pry at side slots (gives ±70 pixels
movement maximum).
•To move left or right, pry at the top slot (gives ±50 pixels movement
maximum)
5. When the image is correctly positioned, secure the 4 mounting screws (15-18
in.lb.) and replace the front bezel.
Figure 2.8. Estimating Throw Distance
(SEE APPENDIX E)
Vertical & Horizontal '
Position

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-9
Figure 2.9. Adjusting Lens Mount to Offset the Image
The maximum vertical adjustment of ±70 pixels means that up to 57% of the image
can be projected above or below the lens center.
The maximum horizontal adjustment of ±50 pixels means that up to 54% of the
image can be projected to one side of the lens center.
Keep in mind that precise offset ranges depend on the specific lens you are using,
where the true lens center is located without offset, and whether or not you are
offsetting both horizontally as well as vertically. See Table 2.1 and Figure 2.10.

INSTALLATION AND SETUP
2-10 DLV1280 DX User’s Manual
Table 2.1. Maximum % of Image Offset from Lens Center (ANY LENS)
Max. Offset
(distance in pixels)
= Amount of Image Offset
from Lens Center
Vertical Offset ±70 pixels = 57% (i.e., ±582 pixels)
Horizontal Offset ±50 pixels = 54% (i.e., ±690 pixels)
Figure 2.10. Vertical and Horizontal Offsets
NOTES: 1) If you cannot raise or lower the image enough using mechanical vertical
offsets, try adjusting V-Position in the Size and Position menu (see 3.6, Adjusting

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-11
the Image). 2) If the image becomes keystoned or exhibits uneven brightness, the
projector may simply be poorly placed in relation to the screen. 3)Simultaneously
offsetting horizontally and vertically limits the adjustment range of each.
For typical front or rear floor mounts, mount the projector on a
secure table or cart. Take care with a mobile cart—avoid
sudden stops, excessive force and uneven surfaces that may
cause the projector and cart combination to overturn.
The table or cart should be reasonably level. Fine adjustments to the projector level
can be made by adjusting the height of the projector legs; refer to 2.7, Leveling for
details.
Special Mounting
Note that projector can be rotated and mounted at any vertical angle—i.e., you can
tilt the face of the projector up or down as much as desired for your installation. The
side-to-side tilt, however, must not exceed 15° (see Figure 2.11). This limit ensures
that the arc lamp in the projector operates properly and safely. Always make sure that
exhaust air from the projector does not vent towards the lens, otherwise you may
detect heat waves in your projected image.
Figure 2.11. Horizontal and Vertical Tilt Ranges
You must use the proper ceiling mount fixture or stacking kit for your projector. For
more information, contact your dealer.
In rear screen applications where space behind
the projector is limited, a mirror may be used
to fold the optical path. See right. The position
of the projector and mirror must be accurately
set—if considering this type of installation, call
your dealer for assistance.
Mountin
g
'
Folded O
p
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INSTALLATION AND SETUP
2-12 DLV1280 DX User’s Manual
The rear panel of the projector provides standard input panels to which you may
connect a variety of sources. See Figure 2.12–the lower left area (INPUT 1) typically
accepts an RGB signal from an external RGB source, or it can also be used for YPbPr
signals or additional video sources. The upper right panel–the optional Video
Decoder Module–accepts only composite video at INPUT 3 or S-video at INPUT 4 from
devices such as VCRs, laser disk players or DVD players. There are also several
other optional interfaces available for connecting an additional source at INPUT 2.
Such an option installs in the upper left area.
Figure 2.12. Rear Connector Panel
2.4 Source
Connections

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-13
INPUT 1 provides 5 BNCs (connectors) for linking to a variety of sources. The typical
connection would be to an RGB source such as VGA, SVGA, XGA, Mac,
PowerMac, DEC, Sun, SGI and others. This projector supports multiple sync types
with RGB signals: sync-on-green, composite sync, and separate H & V syncs.
NOTE: Depending on the source, you may need a custom adapter cable with BNC
connectors at the projector end and a different type of connector at the other (such as
a 15-pin "D" connector for computer sources). Contact your dealer.
Connect the SYNC BNC input(s) first. Then connect the red, green and blue source
outputs to the RED, GREEN, and BLUE BNCs on the INPUT 1 panel. If the source uses
sync-on-green, only the red, green, and blue connections are required. If the source
provides a composite sync output, connect it to the SYNC input labeled HOR/COMP. If
the source provides separate horizontal and vertical sync outputs, connect horizontal
sync to the SYNC input labeled HOR/COMP and connect vertical sync to SYNC input
labeled VERT. See Figure 2.13.
NOTES: 1) If for some reason the projector fails to recognize as an RGB signal,
specify this Color Space option within the Image Settings menu. See 3.6, Adjusting
the Image. 2) To connect YPbPr signals–such as from DVD or analog HDTV sources–to
INPUT 1, use the red, green and blue BNCs as described in YPbPr Signals later in this
section.
Figure 2.13. Connecting RGB Input
RGB Si
g
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INSTALLATION AND SETUP
2-14 DLV1280 DX User’s Manual
Connect a YPbPr signal (component video) to INPUT 1 as shown in Figure 2.14.
Figure 2.14. Connecting YPbPr Signal
NOTES: 1) If, for some reason, the projector fails to recognize a YPbPr signal,
specify this Color Space option within the Image Settings menu. See 3.6, Adjusting
the Image. 2) Do not connect digital component signals (known as YCbCr) to INPUT
1. Use the appropriate digital interface installed at INPUT 2.
The video decoder input panel provides simultaneous connection of both a composite
video source (INPUT 3) and an S-Video source (INPUT 4).
If connecting a composite video source, use the Composite BNC connector or the
RCA phono jack at INPUT 3–do not use both as inputs. See Figure 2.15.
NOTE: If you want to loop a composite signal through to another projector or
display device, see Video Loop Through later in this section.
Figure 2.15. Connecting Composite Video
YPbPr Signal '
(COMPONENT VIDEO)
Com
p
osite Video '

INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-15
The video decoder input panel provides simultaneous connection of both a composite
video source (INPUT 3) and an S-Video source (INPUT 4).
If connecting an S-Video source, use the 4-pin mini DIN connector or the Y and C
BNC connectors (luma and chroma) at INPUT 4–do not use both as inputs. See Figure
2.16.
Figure 2.16. Connecting S-Video
NOTE: If you want to loop an S-video signal through to another projector or display
device, see Video Loop Through below.
S-Video '

INSTALLATION AND SETUP
2-16 DLV1280 DX User’s Manual
To loop a single incoming video signal input (connected at the video decoder)
through to another projector or display device, use the empty connector(s) adjacent to
this same input as described below.
Composite Video Loop Through
CONNECTIONS: See Figure 2.17. From your source, connect a composite video signal
to INPUT 3 using either the small phono plug or the adjacent BNC. Connect a second
cable from whichever INPUT 3 connector is free to one of the composite video inputs
of the next display device or projector. Continue this looping method for each
projector, using either the phono plug or the adjacent BNC as input into INPUT 3,
then using the other connector as an output (i.e., loop through). Whether you use the
BNC or the phono plug as input or output depends on the type of cable you have on
hand and what type of connectors are on each end.
VIDEO TERMINATION: In the Video Options submenu, make sure “Video
Termination” is checked for the final projector only. All other projectors must have
this option unchecked in order for the signal to continue. For other types of display
devices in the chain, typically a “Hi-Z” switch position is needed.
Figure 2.17. Connections for Composite Video Loop Through
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INSTALLATION & SETUP
DLV1280 DX User’s Manual 2-17
S-Video Loop Through
CONNECTIONS: See Figure 2.18. From your source, connect an S-video source signal
to INPUT 4 using either the 4-pin mini DIN or the 2 adjacent BNCs labeled Y and C.
Connect a second cable from whichever INPUT 4 connector is free to one of the S-
video inputs of the next display device or projector. Continue this looping method for
each projector, using either 4-pin mini DIN or the 2 adjacent BNCs as input into
INPUT 4, then using the other connector(s) as an output (i.e., loop through). Whether
you use 4-pin mini DIN or the 2 adjacent BNCs as input or output depends on the
type of cable you have on hand and what type of connectors are on each end.
VIDEO TERMINATION: In the Video Options submenu, make sure “Video
Termination” is checked for only the final projector. All other projectors must have
this option unchecked in order for the signal to continue. For other types of display
devices in the chain, typically a “Hi-Z” switch position is needed.
Figure 2.18. Connections for S-Video Loop Through
If you want to use an extra video source in addition to the video source(s) connected at
INPUT 3 or INPUT 4 connect either a Composite or S-Video source to INPUT 1 as shown in
Figure 2.19. Do not connect both types here simultaneously. NOTE: For additional video
inputs, install an optional Composite/S-Video Input Module at INPUT 2.
Figure 2.19. Connecting an Extra Video Source to Input 1
Extra Video '
– COMPOSITE OR S-VIDEO