Projector Christie Vista X3 User Manual

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Figure 2.27. RS-232 Serial Connection to a Computer
RS-422 Ports
Some computers can provide 
RS-422 serial communications (often through a plug-in
adapter or external converter) rather than the more common RS-232. RS-422
communication has differential “transmits-and-receives” and is generally better
suited for long distances than is RS-232 communication. RS-422 is not compatible
with RS-232—connecting one to the other could damage the equipment at either end.
If you wish to control the projector with a computer and/or other controlling device
(such as the Two-Way Controller) having RS-422 capability, connect 
RS-422 serial
communication cables between the computer (or other device) and either (or both) of
the projector serial ports labeled 
RS-422—these 6-pin XLR connector ports are
located near the upper right corner of the projectors rear control panel (see Figure
2.28). Use an 
RS-422 port only if your equipment has RS-422 capability—always
first consult the documentation supplied with your equipment. 
						

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Figure 2.28. RS-422 Serial Connection to a Computer
 WARNING 
Do not use an RS-422 port unless you are using a
computer with RS-422 capability. The voltage levels of
this signal can damage incompatible equipment.
You may wish to use one or more external Marquee Signal Switchers or a third party
switcher in order to significantly increase the number of sources you can select. If
you are using a Marquee Signal Switcher, connect the switcher’s RGB output to
INPUT 1 and connect an RS-232 serial communication cable between the switcher and
the projector serial port labeled 
SWITCHER (refer back to Figure 2.24). The switcher
communication link (permanently set at 9600 baud) enables you to access inputs
connected to the switcher in the same manner as those connected directly to the
projector. For most other third-party switchers, connect and access sources according
to the documentation provided with that switcher.
NOTE: See 2.4, Source Connections, “Connecting a Switcher” for complete details.
Serial Communications
RS-232 NETWORK: To control multiple projectors with a computer/controller having
an RS-232 interface, first set them all to the same baud rate needed, then chain the
projectors together by connecting the 
RS-232 OUT connector of the first projector
(already connected to the computer/controller) to the 
RS-232 IN connector of the next
projector in the chain. If usin
g a switcher
If using multiple projectors 
						

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Figure 2.29. Adding Another Projector via RS-232
RS-422 NETWORK: To control multiple projectors with a computer/controller having
an RS-422 interface, first set them all to the same baud rate needed, then chain the
projectors together by connecting the 
RS-422 PORT 2 connector of the first projector
(already connected to the computer/controller) to the 
RS-422 PORT 1 connector of the
next projector in the chain.
Figure 2.30. Adding Another Projector via RS-422 
						

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For either type of network, continue connecting projectors in this manner until
you’ve reached the last projector in the chain, so that only the last projector has an
empty 
RS-232 OUT (or RS-422 PORT, if applicable). See examples below.
Figure 2.31. Assorted Networks (NOT split)
Note that communication parameters such as baud rate must be set to match the
particular controlling device before connecting as a network—refer to the
documentation that came with your controlling device in order to determine the
proper baud rate. See 3.7, Configuring System Parameters if you need help changing the
projector baud rate from its default of 19200.
NOTES: 1) To avoid damage, connect only properly wired serial communication
cables. See Appendix D for details.  2) It is recommended that each RS-232
communication cable be no more than 25 feet in length. Use high quality cables. 
						

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In a typical network, broadcast serial communications or messages destined for a
specific projector travel through all serial ports in each projector regardless of
whether the messages originate from an RS-232 or RS-422 source (refer back to
Figure 2.31, bottom example). The communication path depends on the serial cabling
connected at each projector.
You may prefer the option of two separate communication paths—RS-232 or RS-
422—in your network, essentially creating a redundant “back-up” communication
path that can take over should a failed projector (or controller) prevent
communications via the other path. For this setup, connect each projector to the next
using both RS-232 and RS-422 ports.
Then enable the “Split
Network” setting in the
Communications menu for
each projector present so that
RS-232 communications
remain on RS-232 paths only
and RS-422 communications
remain on RS-422 paths only
(Figure 2.32). Each projector
can then receive and send
either type of message depending on which controller initiates the commands—
should one path fail, the second “back-up” network path can be used. Only one
network should be active at a given time, as determined by the controller (whether it
is RS-232 or RS-422). Note that the “Broadcast Key” option is OFF.
 IMPORTANT 
Whenever downloading new projector software to networks, use a
single-route network only. DISCONNECT any redundant serial cabling
and UNCHECK the “Split Network” checkbox for each projector.
Two Different “Splits”
There are two different split network configurations possible (Figure 2.33). Set up
whichever option best suits your application needs:
A. SPLIT NETWORK WITH ONE CONTROLLER– If you have a single controller and
want a back-up serial link, connect one controller standard (e.g., RS-232) to
one physical end of the network and the other controller standard (e.g., RS-
422) at the other physical end of the network. Make sure the “Split Network”
option is enabled in the Communications menu. If a projector should then fail
anywhere in the network, communication with the remaining projectors can be
resumed in the opposite direction using the other standard. NOTE: This
configuration requires that both standards be available from a single
controller, or that you use an RS-232/RS-422 adapter.
B. SPLIT NETWORK WITH TWO CONTROLLERS– If you have two controllers (one
RS-232 and one RS-422) and want one to be a back-up, connect each
controller to the appropriate serial port on the first projector in the network.
Then connect projectors together using both RS-232 and RS-422 ports as
shown. Make sure the “Split Network” option is enabled in the
Communications menu. Now, if either controller fails, you can simply switch
to the other controller and communicate via the other standard. Back-u
p or “Split” Networks
Figure 2.32. Enable “Split Network” 
						

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Figure 2.33. Two Types of Split Networks
Each projector can be assigned a unique 3-digit projector number (for example, 001).
These numbers are necessary when you are working with multiple linked projectors,
enabling you to direct commands to a certain projector rather than always
broadcasting to the entire network. For complete information on how to assign
projector numbers, see 3.7, Configuring System Parameters.
NOTE: To loop a single incoming video source through to another projector or
display device on a network, see Video Loop Through in 2.4, Source Connections. Projector Numbers 
						

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At manufacture every keypad is assigned “A” as its default protocol, which is simply
a collection of settings that determine how the keypad operates. Once assigned, this
protocol remains in effect until it is changed—that is, the keypad will operate as it
currently does until you change its protocol.
Protocols are most useful for multiple-projector applications. For example, you might
want to change a keypad protocol if you are working with two projectors and two
remote keypads in the same room and need to control each projector independently
(Figure 2.34). When Keypad A has a different protocol than Keypad B, each keypad
communicates only with the projector having a matching protocol. Or, if you have a
network of two or more projectors connected together via RS-232 serial ports, you
may want only certain projectors to respond to a wired keypad, thus you can use
different protocols to limit responses.
NOTE: Matching the protocol on the projector to that of a keypad is done through a
setting in the Communications submenu. See 3.7, Configuring System Parameters
for further information on how to change the projectors infrared sensor (rear and
front) protocol.
A protocol for either type of remote keypad — IR or wired — can be changed
through software commands entered on the keypad. A new protocol set through
software commands remains in effect until the keypad batteries are removed and
replaced (if an IR remote), or until the keypad is unplugged (if a wired remote). A
remote can also be changed manually —you can hard-wire new jumper settings
inside the keypad so that they remain in effect until you change the hard-wiring. Note
that a hard-wired protocol can be temporarily overridden by the software protocol
change, effective until the keypad is unplugged and plugged in again (if a wired
remote) or until a battery is removed (if an IR remote).
Figure 2.34. Independent Keypads and Projectors
The standard IR remote keypad or the optional wired remote can be set to one of two
different protocols —  “A” or “B”. To hard-wire a protocol to “A” or “B” in either
remote, follow Steps 1 through 5:
2.10 Keypad
Protocols and
Conversion
Remote Keypad
Protocol
— IR OR WIRED KEYPAD — 
						

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Step 1
Unplug the keypad from the projector (applies to wired remote only).
Step 2
Unlatch and open the empty battery compartment on the back of the keypad as shown
in Figure 2.35.
NOTE: A wired keypad opens as shown, but a cable passes through the battery
compartment cover.
Figure 2.35. Opening the Keypad
Step 3
Find the 4 jumpers located along the latching side of the battery compartment. These
jumpers set the keypad protocol and other settings so that the keypad functions in a
certain manner.
Step 4: Set the Jumpers
Set the jumpers as shown in Figure 2.36. Take care to refer to the correct part of the
drawing — IR or wired (optional). Use tweezers or needle-nose pliers to remove and
replace each jumper as necessary.
• J1 jumper: For either remote, set between pins 1 and 2 to set as Protocol “A”.
Set between pins 2 and 3 to set as Protocol “B”.
• J2 jumper: For either remote, set between pins 2 and 3 as shown; otherwise, the
projector will not respond correctly to keypad commands.
• J3 jumper: For the IR remote, make sure that the jumper is set between pins 2
and 3 as shown. For the wired remote, make sure that the jumper is set between
pins 1 and 2 as shown.
• J4 jumper: For the IR remote, make sure that the jumper is set between pins 1
and 2 as shown. For the wired remote, make sure that the jumper is set between
pins 2 and 3 as shown.
Step 5
Replace battery compartment cover. Plug into projector (wired keypad only) and test. 
						

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Figure 2.36. Locating and Setting the Jumpers
NOTE: A wired keypad can be converted into an IR remote keypad, and vice versa.
Follow the settings shown above, adding or deleting the cable and batteries as required.
The cable with 3-pin XLR connector is available separately from your dealer.
SHORTCUT METHOD:
You can also issue software protocol settings through the keypad. These software
commands will be lost when the keypad is either unplugged or when a battery is
removed — the keypad will revert back to the hard-wired jumper settings (see above)
until you enter the software commands again.
Press 
Input1 Color Pixel Pos it ion   = Protocol “A”
Press 
Input1 Color Pixel Pos it ion   = Protocol “B”
NOTE: If you change any keypad to a new protocol and the projector stops
responding,  the projector may be set to a conflicting protocol. Use the projectors
built-in keypad to access the Communications menu. Under “Front IR” or “Back
IR” or Wired Keypad, select the protocol that matches the new protocol of the
keypad at hand. The projector should now respond properly. 
						

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If desired, you can convert an IR remote keypad into a wired remote keypad and vice
versa (available February 2000).
TO CHANGE FROM INFRARED TO WIRED:
• Remove battery compartment cover from back of keypad.
• Remove batteries.
• Wait 1-2 minutes.
• Plug the keypad cable (available separately) into the empty battery
compartment. Make sure that the battery cover is notched smoothly to
accommodate the cable.
• Set keypad protocol as desired, using “wired” jumper settings.
• Replace battery compartment cover.
• Plug into the 3-pin XLR port at the rear panel of the projector.
TO CHANGE FROM WIRED TO INFRARED:
• Unplug the keypad from the projector.
• Open the keypad back and unplug the keypad cable.
• Wait 1-2 minutes.
• Install batteries (see Section 4).
• Set keypad protocol as desired, using “IR” jumper settings.
• Replace battery compartment cover. Convertin
g a Keypad