Runco Vx 6c Projector User Manual

							INSTALLATION AND SETUP
STEP 4 Pull lens assembly out
zCarefully pull the lens assembly straight out of the projector
and set aside.
STEP 5Install new lens assembly
zIMPORTANT:Remove the rear (smallest) lens cap from the new
lens. Make sure the frontlens cap remains on during installation.
zAlign the large cut-out area on the lens flange to the bottomof the
lens mount (which has a matching cut-out). The 3 lens assembly slots
should align with the lens mount screws so that the screw heads will fit
through the large end of the slots (see Orientation figure).
NOTE: On most lenses, a small extra “keying” slot located at approxi-
mately 2 o’clock on the lens flange will align with a set screw in the same
location on the lens mount, preventing the lens from being installed in the
wrong orientation. If the lens flange does not seem to fit into place over all
screws, try rotating the lens assembly in one direction or another.
z With the lens assembly aligned and the screws inserted through the flange, use both hands to
rotate the lens barrel clockwise until the lens mount screw heads lock into the small end of the
lens assembly slots.
z Secure the 3 lens mount screws.
STEP 6Reposition the projector for new lens
Remove the front lens cap and reposition the projector closer or further from the screen as nec-
essary for the screen and the new lens type (refer to Throw Distance section 2.6). In a permanent
installation, always use the appropriate throw distance formula to calculate the distance accurate-
ly Power up and test. Adjust offsets as necessary.
Remove Lens Assembly
Orientation
2-4 
						

							INSTALLATION AND SETUP
STEP 6Adjust Image
zZOOM: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 do not have a zoom lens or you can not adjust the image
enough, the projector may not be positioned at the proper throw distance
for your screen size. Power down, unplug the projector and move it
towards or away from the screen.
zFOCUS:At the lens opening, turn the focus tab to focus the image
clearly.
zOFFSETS:Turn either or both of the adjustment screws (with the pro-
vided hex driver) adjacent to the lens if you need to align the image with
your screen-turn the top screw to raise or lower the image. Turn the bot-
tom screw to shift the image left or right. Re-check focus.
zOTHER:Press        to refine other display parameters as described in 
Section 3.3 Using the Keypad.
Zoom
Focus
V
H
Menu
2-5
1.33
Anamorphic Lens1.42
Anamorphic Lens1.90
Anamorphic Lens
Adjust Image (Motorized Models)
NOTE: Only for units equipped with motorized lens control.
With the input image displayed, press        on any keypad.
If you’ve just installed the lens, select “Calibrate Lens”
before making any adjustments (See section 3 for
details). Then, with the Lens Control menu displayed,
use the keypad as shown to the left, Motorized Lens
Adjustment, to focus the image clearly and, if a zoom
lens is present, to increase or decrease image size. If
desired, adjust horizontal and/or vertical offsets to shift
the lens and image location - ranges are shown in 2.7
Vertical and Horizontal Position.
Lens
Lens Control
Focus
Zoom
Lens Horizontal Offset
Lens Vertical Offset
Intelligent Lens System
Calibrate Lens
Center Lens3140
5711
4881
2664
Adjust with                and
Scroll menu with             and   ONOFF
= No offsets (approx.)
Motorized Lens Adjustments
960P 16x9                    1024P 16x9                  1024P 2.35:1 
						

							INSTALLATION AND SETUP
2.3 Installation Considerations
Although this projector delivers a high brightness quality output, final display quality could be
compromised if the projector is not properly 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
For any new installation, you will likely have to safely lift the projector into place. Keep in mind
that the projector is quite heavy, and the aid of a CO
2or other type of mechanical lift is highly
recommended.
2.4 Additional Considerations
Here are some other considerations and tips which can help you improve your installation:
zKeep the projector away from devices that radiate electromagnetic energy such as motors and
transformers. Common sources of these are slide projectors, speakers, power amplifiers, ele-
vators, etc.
zFor rear screen applications, less space is required if a mirror is used to fold the optical path.
zChoose the right screen size for the application:
UAs screen size increases, magnification increases and reduces brightness. Select a screen
size which is appropriate for the theater, but not larger than what is required.
UInstalling 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.
ULarger screens require greater attention to lighting conditions.
2-6
Press         to refine other display parameters, if necessary. See 3.5 Using Inputs and Memory Banksif you want
to work with other source inputs or defined memory banks.
You may want to reduce initial setup time by starting with an “Auto Setup”. The projector will automatically
optimize a variety of display settings according to the incoming source detected. You can then re-adjust these
settings at any time, if desired.Menu
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 that may affect performance.
!! 
						

							TheVX-4c/VX-6c 720Psystem offers high definition resolution in a 16:9 format, while providing multiple
aspect ratio selection. Without the use of an anamorphic system. 
The VX-4c/VX-6c 960Psystem provides a 26% increase in brightness and resolution over the base 720P con-
figuration. (Using a 1.33 x Anamorphic lens)
The VX-4c/VX-6c 1024Psystem yields digital cinema resolution by employing every available pixel for a max-
imum picture clarity and brightness. (Using a 1.42 x Anamorphic lens)
The VX-4c/VX-6c 1024P/2.35:1system also makes the maximum resolution fully available, on a 2.35:1 aspect
ratio screen.  All other common aspect ratios are selectable using the constant height approach.  This system was
created for the true cinemaphile owning a theater with a cinemascope screen.  (Using a 1.90 x Anamorphic lens)
INSTALLATION AND SETUP
2-7
2.5 Throw Distances - Placement Section
Projector
VX-4c/VX-6c
720p
960p
1024p
1024p
w/ 2.35 aspect ratioThrow Distance
Lens 1:  0.8
Lens 2:  2.2 - 4.0
Lens 3:  4.0 - 7.0
Lens 1: 1.65 - 3.0
Lens 2: 3.0 - 5.25
Lens 1: 1.55 - 2.80
Lens 2: 2.80 - 4.90
Lens 1: 1.15 - 2.10
Lens 2: 2.10 - 3.65Optical
Resolution
720p
960p
1024p
1024p
w/ 2.35 aspect ratioScreen
Aspect Ratio
1.78:1 or 1.33:1
1.78:1
1.78:1
2.35:1 
						

							Always consult this section when planning a projector installation. See also section 2.7 and 2.8, Projector
Position and Mounting.
Calculating Throw Distance
Correct throw distance depends on the screen size and lens present-the larger the image needed,
the greater the distance you must allow between the lens and screen. Once you know the screen
size and lens type present, you can calculate the precise throw distance you require by using the
appropriate formula as found in this appendix.
Throw distance is the distance between the projector front feet and the screen. This measurement
is not necessarily parallel to the floor-i.e., the projector and screen may be inclined.
NOTE: If your projector is tilted
up or down in relation to the
screen, as is sometimes the case
for large venues or elevated
installations, throw distance still
represents the smallest measure-
ment between the screen and
front feet centers.
Pre-calculated throw distances for the complete range of lens types and screen sizes appear in the
charts and graphs on the following pages. Refer to these examples to quickly determine the prop-
er throw distance (±5%) for your installation and lens.
NOTE: Variable operating ranges for zoom lenses appear in graphs only.
INSTALLATION AND SETUP
2-8 
						

							INSTALLATION AND SETUP
2.6 Vertical & Horizontal Position
THE VERTICAL POSITIONof the projector in relation to the screen also depends on the size
of the screen and the lens type. Correct vertical position helps ensure that the image will be rec-
tangular in shape rather than keystoned (having non-parallel sides) and that image focus and
brightness both remain optimized.
In addition, vertical position of the image can be manually offset-that is, moved up or down-by
turning the top screw on the front of the projector (the bottom screw if the projector is ceiling
mounted). The range of adjustment is roughly 130%, depending on the specific lens you are using
and whether or not you are also offsetting horizontally. See Table 1 for the percentage of the
image that can be displayed above and below the center of each type of lens designed for this pro-
jector. These image offsets are also illustrated below (Fixed Lenses) and on the following page
(Zoom Lenses). 
Maximum Vertical Offsets (FIXED LENSES)
Table 1. Maximum % of Image Offset from Lens Center
Lens Type 
Max. Recommended Image Offset 
0.8:1 

						

							INSTALLATION AND SETUP
Maximum Vertical Offsets (ZOOM LENSES)
NOTES: 1)If you cannot raise or lower the image enough using
mechanical vertical offsets, try adjusting V-Shiftin the Scaling
Parametersmenu (see 3.6, Adjusting the Image). 2)If the image
becomes keystoned or exhibits uneven brightness, the projector
may simply be too high or low in relation to the screen. 
3) Recommended offset ranges can be exceeded, however this may
affect image quality. 4)Simultaneous horizontal and vertical 
offset limits the adjustment range of each. 
THE HORIZONTAL POSITIONof the image can be offset-that is, shifted left or right of lens center-by 
turning the bottom screw on the front of the projector (the top screw if the projector is ceiling mounted). The
maximum horizontal offsets for the lenses designed for this projector is shown on the following page. For this
projector, this value expresses the maximum percentage of the image that can be projected to one side of the lens
center (roughly 80%, depending on the lens).
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							INSTALLATION AND SETUP
2.7 Mounting
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 over-
turn.
The table or cart should be reasonably level. Fine adjustments to the projec-
tor level can be made by adjusting the height of the projector legs.
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 below). 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.
Horizontal and Vertical Tilt Ranges
You must use the proper ceiling mount fixture or stacking kit for your projector. For more infor-
mation, contact your Runco Dealer. 
Maximum Horizontal Offset (ALL LENSES)
2-11 
						

							Folded Optics
In rear screen applications where space behind the pro-
jector is limited, a mirror may be used to fold the opti-
cal path. The position of the projector and mirror must
be accurately set-if considering this type of installation,
call your Runco dealer for assistance.
2.9 Source Connections
The rear panel of the projector provides standard input panels to which you may connect a vari-
ety of sources. See below - the lower left area (INPUT 1) typically accepts an RGB signalfrom
an external RGB source (such as the VHD Ultra Controller), or it can also be used for YPbPr sig-
nals from DTV sources. The upper right panel-the Video Decoder Module-accepts only compos-
ite video at INPUT 3or S-videoat INPUT 4from devices such as VCRs, laser disc players or
DVD players. There are also several optional interfaces available for connecting other sources at
INPUT 2. Such an option installs in the upper left area, just below the audio connectors. For any
input, including the optional inputs, audio with loop through connects at the audio input panel
located between the license label area and INPUT 2.
Rear Connector Panel
INSTALLATION AND SETUP
Connect Control Line
From Vivix ControllerVivix Controller
Note: The decoder module is an option; it is not supplied with the Projector.
2-12 2.8 
						

							INSTALLATION AND SETUP
RGB Signals
INPUT 1provides 5 BNCs (connectors) for linking to a variety of sources. The typical connec-
tion would be to an RGB source such as the VHD Ultra Controller, computers or DTV decoders
with an RGB output. This projector supports multiple sync types with RGB signals: sync-on-
green, composite sync, and separate H & V syncs.
NOTES: Depending on the source, you may need a custom adapter cable that has BNC connec-
tors at the projector end and a different type of connector at the other (such as a 15-pin “D” con-
nector for computer sources). Contact your Runco dealer.
Connect the SYNCBNC input(s) first. Then connect the red, green and blue source outputs to the
RED, GREEN, and BLUEBNCs on the INPUT 1panel. 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 SYNCinput labeled HOR/COMP. If the source provides separate horizontal
and vertical sync outputs, connect horizontal sync to the SYNCinput labeled HOR/COMPand
connect vertical sync to SYNCinput labeled VERT. See below.
NOTE: To connect YPbPr signals, such as from analog HDTV sources, to INPUT 1, use the red,
green and blue BNCs as described in YPbPr Signalslater in this section.
Connecting RGB Input
AUDIO for INPUT1: To control audio levels in an audio/visual system, connect pre-amplified (line level) audio
inputs to the “IN 1”left and right channel audio inputs located near the top left corner of the rear input panel.
Then connect external audio amplification equipment to audio “OUT”for sound output. Audio connection
cables require standard RCA type phono plugs.
2-13 2.10