Runco Vx 55d Projector User Manual

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Runco VX-44d/-55d Owner’s Operating Manual 19 
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3.3 
Installation 
Considerations
Proper installation of your projector will ensure the quality of your display. Whether you are 
installing a projector temporarily or permanently, you should take the following into 
account to ensure your projector performs optimally.
Installation TypeChoose the installation type that best suits your needs: front or rear screen, floor mount or 
inverted mount. 
Table 3-2 compares these various installation methods. 
Ambient LightIn general, minimize or eliminate light sources directed at the screen. Contrast ratio in your 
images will be noticeably reduced 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.
Table 3-2. Projector Installation Options 
AdvantagesConsiderations
Front Screen, Floor Mount Installation

 changed quickly


Front Screen, Inverted Mount (ceiling) Installation





Rear Screen, Floor Mount Installation


t light rejection


Rear Screen, Inverted Mount (ceiling) Installation

t light rejection


Rear Screen, Floor Mount with Mirror

t light rejection

other rear screen installations

 
						

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Throw DistanceThrow distance is the distance measured from the front of the projector 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 the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and 
multiplying it by the lens throw ratio; see 
Figure 3-1. 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.
Figure 3-1. Estimating Throw Distance
Table 3-3 lists the available lens options for the VX-44d/-55d and their associated throw 
ratios. 
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Table 3-3. VX-44d/-55d Lens Options and Throw Ratios 
Lens Option
(Note 2)Throw Ratio 
with Primary 
Lens Only
Throw Range in 
inches, with 
96x54-inch (1.78:1) 
ScreenThrow Ratio 
with Primary 
Lens and 
Anamorphic 
LensThrow Range in 
inches, with 
126.9x54-inch (2.35:1) 
Screen
MinimumMaximumMinimumMaximum
Telesto B1.37 - 1.64131.52157.44Not Applicable (Note 2)Telesto C1.69 - 2.27162.24217.92
Telesto D2.38 - 4.00228.48384.001.79 - 3.09227.15392.12
Telesto E4.18 - 6.60401.28633.603.18 - 5.06403.54642.11
Notes:
1. Throw distance does not affect image quality, provided these ranges are taken into account.
2. Only the Telesto D and E lenses can be used with the optional CineWide (secondary 
anamorphic) lens. Doing so affects the throw distances as shown here. 
Estimating Throw Distance
Throw Distance (TD)  = Screen Width (w)  x  Lens Throw Ratio
Screen width (w)
TD
VX-44d/-55d Throw Ratio: refer to Table 3-3 
						

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Runco VX-44d/-55d Owner’s Operating Manual 21 
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Vertical and Horizontal 
Position
Proper placement of the projector relative to the screen will yield a rectangular, 
perfectly-centered image that completely fills the screen.
Ideally, the projector should be positioned perpendicular to the screen and in such a way 
that the lens center and screen center are aligned with each other, as shown in 
Figure 3-2.
Figure 3-2. Projector Placement
Vertical and Horizontal 
Lens Shift
If it is not possible to align the projector and screen as shown in Figure 3-2, you can use 
the lens shift controls to center the image on the screen. Lens shift is generally expressed 
as a percentage of the screen height or width, as shown in 
Figure 3-3 and Figure 3-4.
Figure 3-3. Vertical Lens Shift
Height
Projection DistanceCeiling
Ceiling Installation
Screen
Height 
Floor Lens Center
Projection Distance
Floor Installation
Lens Center
x
Lens Center
x
ScreenLens Center
Base plate
to lens center =
approx. 6-7 (depending
on the amount of lens shift)
50% Height
Lens Shift 
(0.5 x H)
100% Height
Lens Shift
(1.0 x H)
150% Height
Lens Shift
(1.5 x H)
Screen Center0%
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No 
particular lens or projector is used in this example. 
						

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Figure 3-4. Horizontal Lens Shift
0%Screen Center
100% Width Lens Shift
(1.0 x W)
50% Width Lens Shift 
(0.5 x W) 150% Width Lens Shift
(1.5 x W)
Screen Width (W)
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular 
lens or projector is used in this example. 
						

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Runco VX-44d/-55d Owner’s Operating Manual 23 
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Table 3-4 lists the lens shift limits for each available VX-44d/-55d lens, as percentages 
and absolute measurements with a 100 x 56 inch (1.78:1) screen.  
Table 3-4. Vertical and Horizontal Lens Shift Limits 
Lens Option
Telesto B, Telesto C or 
Telesto ETelesto D
Lens Shift Limits, as Percentages of Screen Height or Width (Notes 1, 2 and 3)
Vertical
(Notes 2 and 3)Up60%60%
Down60%60%
Horizontal
(Note 2)Left22%20%
Right22%20%
Lens Shift Limits in Inches, with a 100-by-56 inch (1.78:1) Screen
VerticalUp33.6033.60
Down33.6033.60
HorizontalLeft22.0020.00
Right22.0020.00
Notes: 
1. With no vertical or horizontal lens shift, the lens center and screen center are aligned with each 
other.
2. Vertical shift limits are percentages of the screen height. Horizontal shift limits are percentages of 
the screen width.
3. Vertical lens shift figures are for ceiling mount configurations.  For floor installations 
(where the projector is upright), reverse the up/down vertical lens shift percentages.  
						

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Folded OpticsIn rear screen applications where space behind the projector is limited, a mirror may be 
used to fold the optical path, as shown in 
Figure 3-5. The position of the projector and 
mirror must be accurately set. If you are considering this type of installation, contact your 
dealer for assistance.
Figure 3-5. Folded Optics
Other ConsiderationsOther 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 and elevators. 
➤
Screen
Mirror
➤ 
						

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Runco VX-44d/-55d Owner’s Operating Manual 25 
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3.4 
Installing the 
Projection Lens
The projection lens is shipped separately from the projector. Proceed as follows to install 
the projection lens:
1. Remove the lens plug from the lens opening in the projector.
2. Place the lens cap on the projection lens to protect it from being damaged during the 
installation process. 
3. Remove the rear cap from the lens. This protective cap is only used during shipping to 
protect the lens from damage. 
4. Slide the new lens into the lens opening of the projector. Make sure to align the 
connector on the side of the lens with the connector assembly on the lens retaining 
ring; see Figure 3-6.  
 
As you connect the lens, you may have to re-align it slightly until the tabs on the lens 
fit into the slots in the lens retaining ring. 
Figure 3-6. Lens Assembly (Front View)
5. With the lens fully inserted (and connected), turn it clockwise until the lens release 
button “pops” indicating the lens is fully inserted.  
						

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3.5 
Installing the Optional 
CineWide Lens Mount
If you are installing a VX-44d/-55d with the optional CineWide or CineWide with 
AutoScope system, proceed as follows to install the anamorphic lens mounting assembly 
(stationary base plate or AutoScope lens motor). 
Remove Projector Front 
Feet (CineWide with 
AutoScope)
(Skip this step if you are installing a fixed CineWide anamorphic lens.) 
Place the projector upside down on a blanket or other soft surface. Loosen and remove 
the two front feet on the projector.
Install Anamorphic Lens 
Motor (CineWide with 
AutoScope) or Base Plate 
(fixed CineWide)
CineWide with AutoScope: Line up the 
eight mounting holes on the lens motor 
housing with those on the bottom of the 
projector. 
 
 
Secure the motor to the projector with the 
eight screws provided for this purpose. 
 
 
 
 
 
 
 
Fixed CineWide: Line up the seven 
mounting holes on the lens mount base plate 
with those on the bottom of the projector, 
directly below the primary lens. Secure the 
base plate to the projector with the screws 
provided for this purpose. 
 
 
 
 
 
 
 
 
 
 
1. Do not install the CineWide lens yet, only the mounting plate or 
lens motor. You will install the CineWide lens after you install the 
projector and adjust the primary lens. 
2. Some of the following steps are necessary only for CineWide 
with AutoScope installations. 
Note
➤
➤
The anamorphic lens mounting kit is partially pre-assembled at the 
factory – the AutoScope lens motor and lens mounting assemblies 
are both fully assembled. Note 
						

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Install Projector Stand 
(CineWide with 
AutoScope, Floor-Mount)
(Skip this step if you are installing a fixed CineWide anamorphic lens, or 
ceiling-mounting an AutoScope-equipped projector.) 
If you are installing the VX-44d/-55d in an upright position (not ceiling-mounted), use the 
supplied hardware to attach the projector stand to the bottom of the projector as shown 
below. This stand allows the projector to lie flat on the mounting surface with the 
AutoScope lens motor installed.
DO NOT OVER-TIGHTEN THE SCREWS. Caution
AutoScope stand used
for floor-mounted
projector 
						

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3.6 
Mounting the 
VX-44d/-55d
There are several methods for mounting the projector. Depending on your chosen 
installation, one method may be more suitable than another. 
Floor Mounting (Upright)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 Mounting 
(Inverted)
For fixed installations, and for those that want the projector out of sight or have a limited 
space for projector and audience, you can invert the VX-44d/-55d and suspend it from 
the ceiling using a specially-designed ceiling mount fixture. 
 
The projector can also be inverted and placed in an enclosure above and behind the 
viewing area. Install four feet on the inside bottom surface of the enclosure on which the 
projector can rest. A variety of materials can be used for this purpose (for example, rubber 
crutch tips or turntable feet). 
Adjusting the Projection 
Angle
If the VX-44d/-55d is ceiling-mounted and the screen is significantly lower than the 
projector, you can tilt the projector at an angle by adjusting the ceiling mount. 
The projector can be rotated (front-to-back) up to 360 degrees and mounted without it 
affecting performance. However, to ensure optimal performance of the lamp, limit the 
side-to-side tilt of the projector to ±15 degrees; see 
Figure 3-7. 
Figure 3-7. Mounting Angle Ranges (Front-to-Back and Side-to-Side)
For a floor (non-AutoScope) installation, turn the two adjustable feet on the bottom of the 
projector to adjust the projection angle.
If you do either of these things, you may need to make keystone adjustments or vertically 
shift the image using the on-screen display (OSD) controls, to compensate. For detailed 
instructions, refer to 
Using the On-Screen Menus on page 61.
➤
➤
Use only the Runco-approved ceiling mount kit designed for your 
projector. Install the mount kit according to the instructions 
provided with it. Note
➤
± 360º
± 15º