Christie Digital Systems Ds+60 Users Manual

							Section 2: Installation and Setup 
 
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The high brightness of this projector is well suited for locations where ambient 
lighting might be considered less than ideal for projection. A typical room 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 that 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 that 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. 
 
Throw distance 
Throw distance (also known as projection distance) is the distance measured from 
your projector’s front feet to the screen. This is an important calculation in any 
projector installation as it determines whether or not you have enough room to install 
your projector with a desired screen size and if your image will be of the right size for 
your screen. 
You can quickly estimate the throw distance by taking the horizontal width of the 
screen and multiplying it by the lens throw ratio. The result of this calculation tells 
you roughly how far back the projector should be positioned from the screen in order 
to project a focused image large enough to fill the screen.  For example, if you are 
going to use a 0.8:1 lens, throw distance would roughly be 0.8 X screen width. 
 IMPORTANT: Always calculate the precise throw distance for the lens type 
and screen size you’re going to use. Refer to Appendix D for actual throw 
distance formulas and quick reference charts.   
Ambient Lighting 
 Other Considerations 
 
Projector Position and 
Mountin
g   
						

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Figure 2.1. Estimating Throw Distance 
 
Vertical and horizontal position  
The correct vertical and horizontal position of the projector in relation to the screen 
depends on the lens type and the screen size. Ideally, the projector should be 
positioned perpendicular to the screen. This way, the image will appear rectangular 
instead of keystoned (trapezoidal).  
The vertical position of the image can be offset – that is moved above or below the 
optical axis (lens center) by adjusting the fully motorized lens mount using the 
keypad. The amount of vertical offset available depends directly on the lens installed 
in the projector and can be slightly limited if horizontal offset has been applied.  
Vertical offset can also be expressed as the percent of half the image height OR the 
number of pixels of shift from lens center. Refer to Figure 2.2 for some illustrated 
examples of vertical offset.  
Table 2.1 along with Figure 2.3 show the maximum vertical offset of a lens or 
alternatively, how much of your projected image will appear above or below lens 
center if the maximum vertical offset is applied using that lens.  
Table 2.1. Lens Offsets  
%Pixels% Pixels% Pixels%Pixels
0.8:1 fixed 12% +/-63 56% +/-588 7% +/-48 53% +/-748
1.2:1 fixed 120% +/-630 110% +/-1155 78% +/-546 89% +/-1246
1.3-1.7:1 120% +/-630 110% +/-1155 78% +/-546 89% +/-1246
1.7-2.5:1 120% +/-630 110% +/-1155 78% +/-546 89% +/-1246
2.5-4.0:1 120% +/-630 110% +/-1155 78% +/-546 89% +/-1246
4.0-7.0:1 120% +/-630 110% +/-1155 78% +/-546 89% +/-1246 Lens TypeVertical Offset            
(% of half height)Maximum  amount of 
projected image above or 
below lens center Horizontal Offset          
(% of half width)Maximum amount of 
projected image to one 
side of lens center  
% Offset =  # pixels of offset / half panel resolution x 100. 
  
						

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Figure 2.2. Examples of Vertical Offset  
						

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Figure 2.3. Lens Vertical Offsets 
The horizontal position of the image can be offset – that is moved to the left or right 
of lens center, by adjusting the fully motorized lens mount through software. The 
amount of horizontal offset available depends on the lens installed and if the image 
has already been vertically offset. Horizontal offset can also be expressed as the 
percent of half the image width – the number of pixels of shift to one side of lens 
center. Refer to Figure 2.4 for some illustrated examples of horizontal offset. 
See also Table 2.1 along with Figure 2.5 which shows the maximum horizontal offset 
of a lens or alternatively, how much of your projected image will appear to one side of 
lens center if the maximum horizontal offset is applied using that lens.   
						

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Figure 2.4. Examples of Horizontal Offset 
 
 
 
  
						

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Figure 2.5. Lens Horizontal Offsets 
 
Lifting and transporting the projector – The projector is light enough to lift and 
transport a short distance. Use the indentations on the bottom of the projector as a 
guide for hand placement, which makes carrying the projector easier. 
When transporting the projector a long distance, use a stable cart or ask someone for 
help. 
Mounting  
There are several methods for mounting the projector. Depending on your chosen 
installation, one method may be more suitable than another. In typical front and rear 
screen installations the projector can be mounted to a secure and level surface, such as 
a table or cart. Carts are useful when moving a projector during a presentation or from 
site to site. If possible, lock the wheels when it’s in position to prevent it from being 
moved during a presentation. 
CEILING MOUNT - The projector can also be inverted and suspended from the ceiling 
using a specially designed ceiling mount fixture. This type of mounting is 
recommended for fixed installations and for those that want the projector out of sight 
or have a limited space for projector and audience.  
 Use only the CHRISTIE approved ceiling mount kit designed for 
your projector. Ceiling Mount Kit # 38-804951-01 
SPECIAL MOUNTING  – The projector can be rotated (front-to-back) up to 360 degrees 
and mounted without it affecting performance. However, the side-to-side tilt limit of 
the projector must not exceed +/-20 degrees. This limit is required to ensure optimal 
performance of the projector and its lamps. (Figure 2.6.)  
						

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Figure 2.6. 
Adjusting projector height  
You can modify the height of the 
projector to remedy a slightly 
unlevel mounting surface by 
adjusting the three feet threaded 
into the bottom chassis. Turn each 
foot clock-wise or counter-
clockwise until the project is level 
on all sides. (Figure 2.7.)  
 
 
 
NOTE: The front of the projector can be 
raised up to 10 degrees.    (Figure 2.8.) 
 
 
 
Folded Optics 
In rear screen applications where space behind the projector is limited, a mirror may 
be used to fold the optical path. See Figure 2.9. The position of the projector and 
mirror must be accurately set – if considering this type of installation call your dealer 
for assistance. 
 
 
Figure 2.9. 
 
 Figure 2.7. 
 
Figure 2.8. 
  
						

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Sources connect to the Input Panel located at the back of the projector. See Figure 
2.10. 
The upper right corner (
INPUT 1) typically accepts an RGB signal from an external 
analog RGB source, or it can also be used for YPbPr signals or additional video 
sources. The DVI-I connector at 
INPUT 2 accepts digital or analog display signals from 
a computer. Connect analog composite video at 
INPUT 3 or S-video at INPUT 4 from 
devices such as VCRs, laser disk players or DVD players.  
Christie offers optional input modules that can be installed into the projector at
 INPUT 
5 
to connect other sources.   
 
Figure 2.10. Input Panel 
NOTES: 1) See Section 6, Specifications for details regarding compatible inputs. 2) 
Use only high quality shielded cables only for all connections. 
INPUT 1 consists of 5 BNCs (connectors) for linking to a variety of sources. The 
typical connection would be to an RGB source such as a PC, Mac, Sun, SGI and 
others. This projector supports multiple sync types with RGB signals: sync-on-green, 
composite sync, and separate H & V syncs. 
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 2.11. 
NOTE: Depending on your 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 some computer sources). Contact your dealer for details.  
2.3   Connecting 
 Sources 
 RGB signals (5 BNCs)  
						

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Figure 2.11. Connecting RGB and Sync 
NOTES: 1) If for some reason the projector fails to recognize a signal as an RGB 
signal, specify the Color Space option within the Image Settings menu. See 3.7, 
Adjusting the Image. 2) To connect YPbPr signals–such as from DVDs or analog HDTV 
sources–to 
INPUT 1, use the red, green and blue BNCs as described in YPbPr Signals 
(below). 3) Use the computer cable provided, to connect some devices to the DVI-I 
connector at Input 2. 
 
Connect a YPbPr signal (component video) to 
INPUT 1 or INPUT 2 as shown in Figure 
2.12. 
NOTES: 1) If, for some reason, the projector fails to recognize a YPbPr signal, 
specify the Color Space option within the Image Settings menu. See 3.7, Adjusting 
the Image. 2) Do not connect digital
 component signals (known as YCbCr) to INPUT 
1
. Install an appropriate optional module in INPUT 5 for this. 
 
Figure 2.12. Connecting YPbPr sources 
   YPbPr si
gnals  
						

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INPUT 3 and INPUT 4 provide simultaneous connection of both a composite video 
source (
INPUT 3) and an S-Video source (INPUT 4). See Figure 2.13. 
 
Figure 2.13.Connecting Composite or S-Video sources 
 
Use the DVI-I connector at 
INPUT 2 to connect either analog or digital video devices 
to the projector. When connecting devices that transmit an analog video signal such as 
VCRs, laptops, and PCs use the cable provided with the projector. Plug the DVI-I 
(single link) connector end to the projector and the 15-pin VGA connector to the 
device.  
Use a cable with DVI-I connectors at both ends to connect devices that transmit 
digital and analog video signals such as high-quality DVD players, satellite receiver 
and digital cable TVs. 
NOTE: 1) To ensure true digital output from devices that transmit digital signals, 
connect to the DVI-I connector. 2) The DVI connector is HDCP compliant. 3) DVI 
loop through is not available unless you have the optional DVI Input Module 
installed at 
INPUT 5. 
 
Optional input modules allow you to increase your total number of inputs and/or 
accommodate different signal types, whether analog or digital. Install in the area 
labeled 
INPUT 5. Options include: 
• RGB 500 Input Module 
• RGB 400 Active Loop Thru Input Module 
• RGB 400 Buffered Amplifier Input Module 
• PC250 Analog Input Module 
• Serial Digital Input Module 
• DVI Input Module 
• Dual SD/HD-SDI Module 
(available 2005) 
 
NOTES: See Appendix F, Optional Input Modules for a brief description of each 
interface.   Com
posite and S-Video 
 DVI Digital Video  
 Optional Inputs