®
CM9760-CXTA
Coaxitron® Translator
Installation/
Operation Manual
C539M-A (12/01)
In North America and Canada: Tel (800) 289-9100 • FAX (800) 289-9150
International Customers: Tel +1(559) 292-1981 • FAX +1(559) 348-1120
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LIST OF ILLUSTRATIONS
Figure
Page
1
2
Equipment Control and Configuration Options ..................................................6
CM9760-CXTA Rear View..................................................................................7
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Fuse Replacement .............................................................................................7
Cascading ..........................................................................................................8
Configuration Switch ..........................................................................................9
BNC Input Group and Protocol “Flavor” .............................................................9
Protocol Type ....................................................................................................10
Unused Configuration Bit ..................................................................................10
Baud Rate Settings ...........................................................................................10
Channel or Address Select ............................................................................... 11
Equipment Type ................................................................................................ 11
Rack Mounting for the CM9760-CXTA ..............................................................12
Direct Mode Installation ....................................................................................15
9760 System Installation ...................................................................................16
DX7000 Installation ...........................................................................................17
MPT9500 Installation ........................................................................................18
COMMS File Example for the CXTA .................................................................19
CAMERA Files Example for the CXTA ..............................................................20
Cable Identification ...........................................................................................23
Data Rate vs. Cable Length ..............................................................................24
Remote Wiring a CM9760-KBD ........................................................................25
LIST OF TABLES
Table
Page
A
B
C
Connection Disparities .......................................................................................7
Signal Interface Table........................................................................................22
(TIA/EIA-422) Cable Example ...........................................................................26
LIST OF FLOWCHARTS
Chart
Page
Installation Decision Tree ..................................................................................14
1
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IMPORTANT SAFEGUARDS AND WARNINGS
Prior to installation and use of this product, the following WARNINGS should be observed.
1. Installation and servicing should only be done by qualified service personnel and con-
form to all local codes.
2. Unless the unit is specifically marked as a NEMA Type 3, 3R, 3S, 4, 4X, 6 or 6P en-
closure, it is designed for indoor use only and it must not be installed where exposed
to rain and moisture.
3. Only use replacement parts recommended by Pelco.
4. After replacement/repair of this unit’s electrical components, conduct a resistance
measurement between line and exposed parts to verify the exposed parts have not
been connected to line circuitry.
5. If the unit has fuses, replace fuses only with the same type fuses for continued protec-
tion against risk of fire.
The product and/or manual may bear the following marks:
This symbol indicates that dangerous volt-
age constituting a risk of electric shock is
present within this unit.
C A U T I O N :
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
This symbol indicates that there are impor-
tant operating and maintenance instructions
in the literature accompanying this unit.
Please thoroughly familiarize yourself with the information in this manual prior to installation
and operation.
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NOTE: For those familiar with device attachment to 9760 systems, a convenient
reference box is provided in the margin that lists the COMMS communication file
parameters for CXTA attachment to a CM9760-CC1. Refer to Section 3.3 Software
Considerations, for additional information.
SECTION I: CXTA OVERVIEW
1.1 DESCRIPTION
The CM9760-CXTA (Coaxitron® translator) is a peripheral product of the CM9760 family of
Pelco matrix switches. The previous CXT model interfaced Coaxitron capable receivers with
the 9760 System (P Protocol). The current CXTA unit still supports that function. In addition,
it can be used to interface appropriately configured systems that utilize D protocol for PTZ
control. This allows the CXTA to be used with the DX7000 (Digital Video Recorder) and the
MPT9500 (Transmitter/Controller), as well as the CM9760 system, if desired.
The CM9760-CXTA (Coaxitron translator) obsoletes and replaces previous models of the
Coaxitron translator.
1.2 MODELS
CM9760-CXTA
Indoor rack-mount model, one RU high. (CE)
1.3 CONTROL AND RECEIVER OPTION COMPATIBILITY
The current mix of controller and receiver “types” that the CM9760-CXTA can interface is il-
lustrated in Figure 1 below. On the receiver side, note that Intercept™ and Spectra® occur
in the same box separated by an “OR” statement. The “OR” conjunction refers to con-
straints associated with the use of these two receivers on the same translator. The rules
addressing these limitations are discussed in the BNC Input Grouping and the Equipment
Type subsections in the Configuration Switch portion of section 2.1 Configuration and Con-
nections – CXTA.
Figure 1. Equipment Control and Configuration Options
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SECTION II: CXTA DEFINING CHARACTERISTICS
A number of configuration and connection decisions are made at the CXTA level in order to
interface it with one of three controllers, one of two protocol “flavors” and a large selection
of receiver options. The next section lists connection and configuration options determined
at the CXTA level. For this purpose, the rear view of the CXTA is illustrated in Figure 2.
BNC PAIRS (1-16)
POWER LED/ COMM
DIP SWITCH LINES
POWER IN/
FUSE/
ON-OFF SWITCH
Figure 2. CM9760-CXTA Rear View
2.1 CONFIGURATION AND CONNECTIONS–CXTA
2.1.1 POWER
The CM9760-CXTA utilizes a 100V/240V@ 50/60Hz auto-ranging power supply. The exter-
nal cord connection, power switch and fuse are located on the right side of the unit when
viewed from the rear of the unit. For fuse replacement, refer to Figure 3. A power cord and
Euro-plug adapter are supplied with the unit.
SPARE FUSE
Figure 3. Fuse Replacement
2.1.2 COMMUNICATIONS
The 8-pin, RJ-45 communication input connector located on the rear of the CXTA, and la-
beled IN, is the data connection to which all controllers must interface. This presents imme-
diate disparities with respect to source (controller) and destination (CXTA) connections that
are spelled out in Table A below:
Table A. Connection Disparities
CONTROLLER
SOURCE CONNECTION/
PROTOCOL FLAVOR
DESTINATION
(CXTA INPUT)
CM9760-CC1
MPT9500
DX7000
RJ-45, 8-PIN, RS-422/ P Protocol
RJ-12, 6-PIN, RS-485/ D Protocol
DB9, RS-232/ D Protocol
RJ-45, 8-PIN,
RS-422, P or
D Protocol
In section 3.2 Installation Configurations, questions related to controller/translator connec-
tivity are answered by means of controller-specific illustrations.
The 8-pin, RJ-45 communication output connector labeled OUT is located next to the input
connector and is used to connect, daisy-chain or cascade two CXTA units together, result-
ing in 32 ports addressable from one controller port. Not all controllers, however, can utilize
cascading and/or are capable of addressing 32 ports.
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The breakdown, with respect to cascading for each controller, is as follows:
•
•
For the 9760, cascading is allowed; addressing is no problem.
For the MPT9500, addressing 32 receivers is no problem; it is not, however very prac-
tical as the controller itself is Coaxitron capable. See the remarks made in the MPT
Controller Hookup portion of section 3.2 Installation Configurations.
•
For the DX7000, only 16 receivers at a time are addressable, therefore it can handle
only one attached CXTA unit. This constraint is also necessary because the DX7000
can interface only 16 loop back video inputs.
The data cable that runs between the labeled IN connector on the CXTA and the RJ-45
Sercom port connection located on the rear of the 9760 matrix controller (CM9760-CC1) is
provided. This is a reverse, 8-pin, flat cable (see Figure 4). Since this is the most often en-
countered configuration, the cable is provided.
Figure 4. Cascading
The provided data cable cannot be used (as is, out of the box) with the DX7000 or the
MPT9500. Each of these has different cabling requirements that are illustrated in the corre-
sponding installation examples (see Figures 15 and 16, respectively).
2.1.3 BNCs
There are 16 pairs (32 total) of BNCs on each unit (see Figure 2). These are IN-OUT,
to-from, dual-function BNCs. The top or bottom row can be used as INPUTS or OUTPUTS.
If the top row of BNCs are used as OUTPUTs, the corresponding BNCs on the bottom row
are used as INPUTs, and vice versa. Characteristics and functions of BNC use are as fol-
lows:
•
•
The BNCs are used for video input/output, command/control and in/out looping.
Receiver access (by controllers) must correspond to the numbered BNC INPUT con-
nector to which the receiver is attached.
•
The BNCs are numbered and addressed, left to right, 1-16. The BNCs on a cascaded
translator (the second unit) are addressed and numbered, left to right, 17-32. The ad-
dress reponse for each controller is set via DIP 1-7 (see Figure 10).
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2.1.4 CONFIGURATION SWITCH
The decode of configuration switch functions is indicated in Figure 5 and discussed in detail
in the paragraphs that follow.
This configuration switch configures the translator with respect to the following functions:
1. BNC Input Group (allocated in x8 groupings) and protocol “flavor” (15 or 32 bit Coax-
itron)
2. Choice of P or D protocol.
3. Communications channel baud rate (under P protocol only).
4. Cascade addressing (16/32 channel or translator address range)
5. Type of 32-bit protocol (Intercept or Spectra).
Figure 5. Configuration Switch
NOTE: Configuration switch positions are read only at power-up time; therefore,
switch changes made after power is applied have no effect until power is recycled.
2.1.4.1 BNC Input Grouping (Receiver Side)
The sixteen BNCs to which Coaxitron receivers are attached are split into x8 groups (1-8
and 9-16). Each group is further defined as entertaining one of two protocol “flavors”: 15- or
32-bit (these are references to 15-bit standard Coaxitron or 32-bit extended Coaxitron, re-
spectively). Therefore, a combination of 15- and 32-bit protocol “flavors” on the same unit is
possible. Conversely, if both x8 groups on the same translator are assigned the same proto-
col flavor, then the entire translator interfaces only 15-bit or only 32-bit Coaxitron receivers.
IMPORTANT: If any x8
group combination is set to
32-bit, DIP switch 1-8 must
be set to restrict equipment
use for the entire translator
to ONLY one equipment
type (receiver): Intercept or
Spectra.
Figure 6. BNC Input Group and Protocol “Flavor”
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2.1.4.2 Protocol Type
This bit is set to correspond to the protocol input of the associated controller (see Figure 7).
NOTE: When protocol is
set for D (DIP 1-3 ON), then
the existing baud rate
settings (DIP 1-5 and 1-6)
for the configuration switch
are ignored. D protocol
operates independent of
baud rate setting and
automatically reverts to a
fixed baud rate of 2400
(8-bit, no parity, 1 stop).
Figure 7. Protocol Type
2.1.4.3 Unused DIP Switch
DIP switch position 1-4 is not used but is reserved for future use.
Figure 8. Unused Configuration Bit
2.1.4.4 BAUD Rates
The baud rate chosen must correspond to the the communicaiton baud rate of the control-
ler to which the CXTA is attached.
Note, as Figure 9 states, that these settings apply to attached P protocol controllers. The trans-
lator reverts to a fixed baud rate of 2400 if a D type controller is interfaced. The baud rate
settings of DIP 1-5 and 1-6 are ignored.
Figure 9. Baud Rate Settings
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2.1.4.5 Channel or Address Select
If DIP 1-7 is set to the OFF position, the translator responds to addresses 1-16. If DIP 1-7 is
ON, the translator responds to addresses 17-32. Therefore, in a cascaded configuration,
DIP 1-7 on the first translator would normally be set to OFF (for the first 16 addresses) and
DIP 1-7 on the second translator would be set to ON for the second set of 16 addresses
(17-32). The important thing is that DIP 1-7 on both translators in a cascaded configuration
are not set the same (both ON or both OFF).
Figure 10. Channel or Address Select
2.1.4.6 Equipment Type
The setting of this DIP switch position is relevant only if DIP 1-1 or 1-2 is set for 32-bit
Coaxitron on any x8 grouping on a translator. If the 32-bit setting is chosen on any x8
grouping, then DIP 1-8 excludes the use of both Intercept and Spectra receivers on the
same translator at the same time. You must make a choice between using one equipment
type or the other for the translator in question.
Figure 11. Equipment Type
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SECTION III: CXTA INSTALLATION
3.1 MOUNTING THE CXTA
Installation of the CM9760-CXTA translator is relatively simple (refer to Figure 12). It is rack
mountable in a standard 19-inch (48.26 cm) rack, using only one RU of vertical rack space.
Once the unit is physically mounted, cable hookup in accordance with the configuration be-
ing interfaced, is the next item on the installation list.
Figure 12. Rack Mounting for the CM9760-CXTA
3.2 INSTALLATION CONFIGURATIONS
The number of installation configurations that can be entertained using the CXTA depends
on the controller types available (there are three main types) and on the configuration capa-
bilities of the CXTA itself. We must also mention a fourth type that uses the CM9760-KBDs
capabilities for direct mode operation as a controller for CXTA use independent of its nor-
mal association with the 9760 System. We therefore consider the following installation con-
figurations:
3.2.1 DIRECT MODE (P Protocol)
NOTE: You cannot cascade
translators off a COM port
on a CM9760-KBD when
using direct mode operation
because only 16 receivers
can be interfaced at a time
on any one COM port of the
KBD; however, you can
connect one translator by
paralleling off COM 1 of the
KBD by utilizing the empty
RJ-45 out connector on the
Universal Power Supply
(UPS) used with the KBD
and, at the same time,
In direct mode, two possibilities are:
1. A single translator hooked up in direct mode, or
2. Two translators hooked up in direct mode; the first connected to COM1 and the sec-
ond connected to COM 2 of the keyboard.
The second possibility (item 2) encompasses the first, so an installation illustrating it is
shown in Figure 13.
connect another translator
to COM 2 of the KBD to
support a total of 32
Coaxitron ports.
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3.2.2 9760 SYSTEM HOOKUP (P Protocol)
NOTE: When running the
translator from ports hooked
to a CM9760 System (system
mode), configure the
Two possibilities are:
1. Single or multiple translators hooked to unique Sercom ports on a system matrix
switch, or
communication parameters of
the CM9760 on that port for
“even” parity or the translator
will not work. Direct mode
(see previous configuration)
is not a concern since the
CM9760-KBD is configured
by default for even parity.
2. Item (1) with the addition of cascaded translators added to the mix.
The second possibility (item 2) encompasses the first, so a system hookup illustrating it is
shown in Figure 14.
3.2.3 DX7000 CONTROLLER HOOKUP (D Protocol)
Only one possibility is available for DX7000 control of the CXTA. That configuration, along
with hookup details, is shown in Figure 15. Note the viewing advantage in that one to six-
teen interfaced receiver inputs can be viewed at the same time on the system monitor.
Moreover, views can also be captured and recorded.
3.2.4 MPT9500 CONTROLLER HOOKUP (D Protocol)
Since the MPT9500 can be configured for D protocol, it can be used to control the CXTA.
This is not an advantage with respect to direct control of Coaxitron receivers (the MPT9500
is Coaxitron capable); however, there are two viable possibilities:
1. If you want to combine control of existing D protocol equipment with Coax control of
CXTA connected receivers on the same data line
2. If you want to control and view more than one Coaxitron receiver at a time without the
necessity of an intervening manual switcher.
An illustration of item two is shown in Figure 16.
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The following flowchart might prove helpful as an aide in configuring the different systems mentioned above with CXTA translator(s).
The flowchart does not include direct mode using the CM9760-KBD.
Flowchart 1. Installation Decision Tree
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Figure 13. Direct Mode Installation
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Figure 14. 9760 System Installation
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Figure 15. DX7000 Installation
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Figure 16. MPT9500 Installation
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3.3 SOFTWARE CONSIDERATIONS
Despite the considerations given in this section to highlight aspects of required software
setup, there is no substitute for consulting the respective manuals for both the controller
chosen and for the receiver to be used. You must take care to match the capabilities of the
controller and the receiver that the CXTA will interface. If there is a mismatch between the
two, the addition of the CXTA will not solve your problem. In fact, in most cases, it will not
be the problem.
With that in mind, the manual references that might be needed when installing the CXTA
are listed below. Use the latest revision of the manual.
C540M (CM9760-KBD) – For direct mode as well as 9760 System install procedures
C547M (CM9760-MGR ) – For 9760 System installation programming issues
C541M (CM9760-CC1) – For issues related to communication hookup and file ma-
nipulation during 9760 System installations
C535M (MPT9500) – For issues related to MPT9500 programming modes and
operation
C682M (DX7000) –For programming and other issues related to the DX7000 Digital
Video Recorder
3.3.1 9760 SYSTEM
There are two files (called configuration files) that must be programmed as part of the con-
figuration set that resides in the 9760 directory on the CM9760-CC1s hard disk. These files
contain the parameters necessary for the operation of anything connected to the systems
Sercom ports. For the CXTA, part of the information required was given in the COM PA-
RAMETERS information box located at the beginning of this manual. That information is
entered into the COMMS file; it is illustrated in Figure17. In addition to the COMMS file, it is
necessary to fill out the CAMERA file for the receivers that will be interfaced by the CXTA.
An example of that configuration file is shown in Figure 18. Pay close attention to the anno-
tations that accompany the screen captures in the figures.
Figure 17. COMMS File Example for the CXTA
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NOTE: When programming
the 9760 KBD in direct mode,
logical numbers must be
assigned to any attached
cameras (see the Keyboard
Menu Programming portion
of section 3.2.7 in the 9760
keyboard manual – C540MA).
3.3.2 CM9760-KBD DIRECT MODE
Consult the required manuals for setting up direct mode operation. The KBD manual
(C540M) is the most important. In particular, see section 3.2.7 Direct Camera
Control/Serial Port Speeds in the KBD manual.
3.3.3 MPT9500 TRANSMITTER/CONTROLLER
You must be in RS-485 mode (as shown on the MPT9500 keyboard display) in order to
operate the MPT9500 in D protocol, simplex mode. The MPT9500 does not, (by default),
come up in RS-485 mode when it is powered on. You must manually select it via the key-
board manual. Consult the manual for further information regarding operation and control.
3.3.4 DX7000 DIGITAL VIDEO RECORDER
Consult the appropriate manuals. The DX7000 has its own software management program
for configuring the parameters of any device connected to it as well as a host of other op-
tions that are not covered here.
Figure 18. CAMERA Files Example for the CXTA
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SECTION IV: CXTA OPERATION
4.1 POWER-UP
At power up, the system microcontroller reads the configuration switch, dip switch posi-
tions, sets up the internal UART with the requested baud rate and stores the configuration
settings in internal RAM. Subsequent protocol-specific commands to the translator result in
the generation of the equivalent Coaxitron command and, at the appropriate time, the gen-
erated command is sent to the addressed receiver.
Additionally, the system – on power up – will automatically issue a “camera on” command if
the configuration switch specifies 15-bit mode operation. This is a backward compatibility
issue that should not concern the user.
4.2 COMMAND SET
Rather than listing the wide range of commands different transmitters are capable of trans-
mitting and which receivers are capable of executing, we encourage you to consult directly
the individual receiver manual applicable to your situation. Only in this way can you deter-
mine which functions or commands it is capable of responding to. The CM9760-CXTA
translator should be able to handle the controller–receiver interface as long as the control-
ler has issued a valid command that the receiver is capable of responding to.
4.3 COMMAND SET VARIATION
Some reassignment of command functions (for example, how to initiate auto-scan when an
auto-scan button is not present on the transmitter/controller) are still handled by using pre-
sets. The areas in which various preset functions are invoked that you need to be aware of
are listed below. In 32-bit Intercept mode, when using the 9750 system only, pattern func-
tions are realized as follows:
Use the preset command and,
Set preset 95 to set pattern START point
Set preset 94 to set pattern END point
Call preset 95 to run pattern
In lieu of an auto-scan button, you can (for both 9750 and 9760 systems), when in 32-bit in-
tercept mode, execute scan functions as follows:
Set AUX 2, Call preset 99 Initiates Auto Scan
Set AUX 3, Call preset 99 Initiates Random Scan
Set AUX 4, Call preset 99 Initiates Frame Scan
For backward compatibility with some CX9000 series (15-bit mode) receiver/drivers, the fol-
lowing presets are assigned:
Set Preset 80 Camera ON
Set Preset 81 Camera OFF
Other than the above, a complete description the operational command set the CM9760-
CXTA is capable of responding to, is almost impossible.
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SECTION V: APPENDIX
5.1 COMMUNICATION PARAMETERS
There is only one basic set of signal interface rules that you must consider when wiring two
9760 communication devices together. Those rules are given in step 3 below.
Frustration arises only if the information you are given does not enable you to identify those
elements of the connection you need to know or if the information you need is not readily at
hand. You should not be satisfied to just plug in a cable “type” because you are told to with-
out having the slightest idea what to do if it doesn’t work. It’s easy enough to check the pa-
rameters for yourself so that when you do plug that cable in, you expect it to work. In fact,
you should be surprised if it doesn’t work.
You will never get in trouble when wiring two 9760 communication devices together, if you
know and follow the information contained in the following steps. You may not always need
all the information listed in all the steps, but you must always have enough information at
your disposal to follow the connection rules stated in step 3.
1. You should know or be given the location of Pin 1 on each of the device input/output,
plugs/connectors that you intend to wire together.
2. You should always be given the signal function that can be accessed at the Pin 1 loca-
tion.
3. All communication devices in the 9760 System must be wired so that the result, if
checked against the following table, is true.
Table B. Signal Interface Table
Device A
TX +
Device B
RX +
TX –
RX –
RX +
TX +
RX –
TX –
Given steps 1 and 2 and knowing step 3, you can successfully connect any two communi-
cation devices together to make them work. In many cases, a cable is provided. That’s OK.
Just check it before you use it.
Depending on the physical geometry of the cable itself, you may also need to know how to
determine cable “type” before you can apply the rules above (see Figure 19). Most devices
in the 9760 family use RJ-45, 8-pin, flat cable to connect to each other. This is rigid cable
so, in effect, it has a cable “color” run across its width. This fact is used to determine the
cable type as either “straight” (parallel) or “reverse” (flipped).
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If a cable is “straight”, then pin 1 at one end of the cable goes to pin 1 at the opposite end
of the cable. If the connecting plugs on this cable interface two devices, then pin 1 on de-
vice one would physically be connected to pin 1 on device two. Straight cable is used in de-
vices where the signal pin run on the first device is opposite that of the second device. If a
cable is “reverse”, then pin 1 on one end of the cable goes to pin 8 at the opposite end of
the cable. If the connecting plugs on this cable interfaced two devices, then pin 1 on device
one physically connects to pin 8 on device two. A reverse cable is used in devices where
the signal pin run on the first device is the same as that of the second device.
Figure 19. Cable Identification
The physical wiring differences for “straight” versus “flipped” came about because of the
relationship of the physical orientation of the attached plugs when the cable is created.
Almost all pieces of equipment connected to the CM9760-CC1 utilize “flipped” cables be-
cause there is a concerted effort to make the signal available at Pin 1 on all devices be TX+.
Thus, use of a “flipped” cable fulfills the requirement of step 3. TX+ (Controller) ends up at
RX+ (Pin 8) on the connected device, because the signal runs from Pin 1 to Pin 8 on each
device is the same. Some devices predate this effort or are simply wired in a different man-
ner. For these, either a straight cable or a non-standard wiring interface is used. How to
identify a “straight” cable from a “flipped” one is illustrated in Figure 19.
Sometimes, a physical disparity exists between two connecting devices such that the wiring
geometry you start with at one end is different from that at the other end. Nevertheless,
the wiring relationships stated in step 3 must be satisfied. Examples of this occurred in the
manual when connecting the CXTA to the DX7000 or to the MPT9500 (see Figures 15 and
16, respectively).
Both wiring scenarios utilized a wall block, which is part of a “wiring kit” that can be ob-
tained from Pelco.
NOTE: Do not be confused by the pasted-in wiring label located in the cap of the
wiring block that you sometimes see. Although signal functions are labeled for each
terminal pin, remember that this is a passive device and that the actual signal that
appears on any terminal pin is the one that you put there. Keep the following in mind:
1. Plan the wiring for each run ahead of time. Be surprised if it doesn’t work.
2. Verify any manual instructions that specify attachment of a certain cable “type”. Check
to be sure the right cable is packed and that the instructions given don’t run contrary to
the previously stated connection rules for signal interfaces.
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5.2 CABLE PARAMETERS
Data communication cables are used in the CM9760 system to connect required equipment to
appropriate data communication ports on the CC1, which are either RS-232 or RS-422 driven.
The characteristics of the cable chosen (if not supplied) depends, first of all, on the driver
type it interfaces.
•
For RS-232 driven ports, such as Com 1 and Com 2, the cable used must meet less
stringent communication requirements than that required for driven ports RS-422.
The cable for RS-232 communications supports the following driver characteristics:
1. It is single ended – one driver and one receiver.
2. It is unbalanced-a voltage level with respect to system ground drives the commu-
nications link.
3. It is limited to low data rates.
4. It is limited to local use: 50 feet or less for synchronized data; 100 to 200 feet for
asynchronous data.
•
For RS-422 driven ports, such as the 32 Sercom ports on the rear of the CC1, the
cable chosen by the user must support the following driver characteristics:
1. It is single ended, multi-drop capable.
2. It is balanced-a differential voltage drives the communications link.
3. It handles relatively high data rates. There is a trade off between data rate and
cable length (theoretically, up to 4,000 feet [1,220 m] @ 100Kbps) (see Figure 20).
4. It is used for both local and remote hookup of system devices; for example, remote
hookup of 9760 keyboards attached to the CC1.
Figure 19: Information Box
BPS or bps means or = bits per second.
Baud = # of signal changes per second.
In the recent past, bps and baud rate were equivalent, that
is, 300 bps and 300 baud, for example, were the same.
Two things happened which eventually separated the use
of bps and baud as being equal.
1. It became physically possible to transmit more than
one bit per signal change through variations in ampli-
tude, frequency, and/or phase.
2. A physical bandwidth limit on voice-grade phone lines
made it difficult to reach baud rates greater than 2400.
Most modems do not operate at a speed greater than
this.
A modem operating at a Pelco referenced baud rate of
9600 is, most likely, a 2400 baud modem operating at
9600 bps (or a 4:1 compression ratio; 4 x 2400=9600)
because of the bps manipulation mentioned above.
Therefore, for higher speed modems and for the graph illus-
trated in Figure 20, modem speeds are listed and referenced
at a bps rate. For convenience, Pelco still refers to modem
speeds in all its communication parameter lists by using the
baud rate ( a misnomer), even though the proper reference,
in most cases, is bps. In Figure 20, the approximate baud
rate range of Pelco equipment is highlighted against the bps
per distance chart.
Figure 20. Data Rate vs. Cable Length
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Most of the time, connection cables are supplied with the device. As long as the supplied
cable is appropriate, no problem arises. If the cable length needed is greater than that sup-
plied, a problem arises for the installer/specifier as to the type of cable to use. One of the
most common hookup extensions is the remote hookup of a 9760 keyboard. The following
highlights the issues involved and ends with some recommendations.
NOTE: For short distances
that exceed the cable length
supplied, you might consider
the use of CAT 5 cable (for
distances up to 300 feet).
This cable is RS-422 compli-
ant (up to the length men-
tioned) and is used primarily
for Ethernet connections
within networks. Moreover,
it is readily available (be-
cause of demand) and cost is
reasonable (because it is less
difficult to manufacture).
For remote installation of a keyboard, the user must supply a cable of appropriate length
that supports the TIA/EIA-422-B (RS-422) communication standard. The example in
Figure 21 shows a keyboard placed 2,000 feet (610 m) from the CC1 via the user-supplied
cable. Junction boxes (phone boxes) are used to facilitate the RJ-45-to-cable connection
points at either end of the run. Note that only signal wires and ground are run through the
cable itself (five of the six available wires are used in the example). The transformer serves
to pass on the data signal and to supply power to the keyboard at the keyboard end.
Figure 21. Remote Wiring a CM9760-KBD
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Although the communication link can be as far away as 4,000 feet (1,220 m) (per Figure 20),
this is theoretical. Pelco recommends that for distances greater than 2,000 feet (610 m)
a CM9505UPS-422 power supply, with data repeater, be used. In any case, Pelco recom-
mends using a cable similar to Belden 9843 that meets or exceeds the support require-
ments for TIA/EIA-422 applications. Table C is taken directly from the FULL TECHNICAL
SPECS page in Belden’s Cable Catalog located on their company web site.
Table C. (TIA/EIA-422) Cable Example
9843
AWG
STRANDED
TYPE
INSULATION
24
(7 x 32)
TC – Tinned Copper
PE – Polyethylene
SHIELD
JACKET
# PAIR
# TRIADS
Aluminum Foil-Polyester PVC – Polyvinyl Chloride
Tape/Braid Shield
3
0
NOMINAL
INSULATION
JACKET
NOMINAL
NOMINAL
NOMINAL VELOCITY NOMINAL
OF PROPAGATION IMPEDANCE
OD (in.) THICKNESS (in.) THICKNESS CAPACITANCE CONDUCTOR
(Pf/FT)
DCR (/M')
(%)
(ohms)
.3600
.00000
.0000
12.800
24.000
66.0
120.0
* TIA/EIA-422-B is the full name of the current standard for what is commonly referred to as RS-422. The prefix “RS”, which stands
for “recommended standard”, was used by the EIA (Electronic Industries Association) as the name for some of its standards.
The “RS-” prefix was dropped by the EIA in 1986 and standards were simply referred to with the EIA- prefix. In 1988 TIA (Telecom-
munication Industries Association) was a working group of the EIA and the reference evolved to a combined EIA/TIA- prefix.
When TIA became ANSI (American National Standards Institute) accredited, the acronym order was reversed to TIA/EIA-. In 1992
TIA spun off from EIA and merged with US Telecommunications Suppliers Association (USTSA). From about that time to the
present, the full standard has been referenced as ANSI/TIA/EIA-422-B, where “B” is the latest revision of the standard. Normally the
standard is written simply as TIA/EIA-422. In all probability, that will be shortened to just TIA-422 at some point in the future. How-
ever, everyone has used the “RS-” prefix reference for so long that it may be some time before its use disappears, if at all.
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SECTION VI: GENERAL
6.1 SPECIFICATIONS
ELECTRICAL
Input Voltage:
100-240 VAC, 50/60 Hz, auto-ranging
Power
Consumption:
15VA
Coaxitron Ports
Video Format:
Video Level:
Coaxitron
NTSC or PAL
±6dB minimum
Level:
0.7 V peak
Data Ports
Input:
RS-422, 8-pin, 4-wire, RJ-45 connector. Dip switch selectable
baud-rate, even parity.
Output:
RS-422, 8-pin, 4-wire, RJ-45 connector. Dip switch selectable
baud-rate, even parity.
Indicators:
Fusing:
1 power LED, Green
1/4A, 250 VAC
GENERAL
Dimensions
Base only:
With Ears for
Rack Mount &
BNCs:
17.40 (W) x 10.625 (D) x 1.75 (H) inches (44.20 x 26.99 x 4.44 cm)
19.00 (W) x 11.125 (D) x 1.75 (H) inches (48.26 cm x 28.26 cm x 4.44 cm)
Operating
Temperature:
32°F to 158°F (0° to 70°C)
5.74 lb (2.60 kg)
Weight:
Rating:
Meets NEMA 1 standards
MECHANICAL
Connectors
Video:
BNC type (32 total)
Power:
3-wire #18 AWG
RS-422:
RJ-45 (8-pin), connectors (2 total)
This equipment contains electrical or electronic components that must be recycled properly to comply with Directive 2002/96/EC of the European Union
regarding the disposal of waste electrical and electronic equipment (WEEE). Contact your local dealer for procedures for recycling this equipment.
The materials used in the manufacture of this document and its components are compliant to the requirements of Directive 2002/95/EC.
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6.2 REGULATORY NOTICES
This equipment has been tested and found to comply with the limits of a Class B digital de-
vice, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment gener-
ates, uses, and can radiate radio frequency energy and, if not installed and used in accor-
dance with the instructions, may cause harmful interference to radio communications.
However there is no guarantee that the interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try and
correct the interference by one or more of the following measures:
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the re-
ceiver is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
PRODUCT WARRANTY AND RETURN INFORMATION
WARRANTY
Pelco will repair or replace, without charge, any merchandise proved defective in material or
workmanship for a period of one year after the date of shipment.
If
a
warranty repair is required, the Dealer must contact Pelco at (800) 289-9100 or
(559) 292-1981 to obtain a Repair Authorization number (RA), and provide the following
information:
1. Model and serial number
Exceptions to this warranty are as noted below:
2. Date of shipment, P.O. number, Sales Order number, or Pelco invoice number
3. Details of the defect or problem
•
•
•
Five years on FT/FR8000 Series fiber optic products.
Three years on Genex® Series products (multiplexers, server, and keyboard).
If there is a dispute regarding the warranty of a product which does not fall under the
warranty conditions stated above, please include a written explanation with the product
when returned.
Three years on Camclosure® and fixed camera models, except the CC3701H-2,
CC3701H-2X, CC3751H-2, CC3651H-2X, MC3651H-2, and MC3651H-2X camera models,
which have a five-year warranty.
Method of return shipment shall be the same or equal to the method by which the item was
received by Pelco.
•
•
Two years on standard motorized or fixed focal length lenses.
Two years on Legacy®, CM6700/CM6800/CM9700 Series matrix, and DF5/DF8 Series
fixed dome products.
RETURNS
In order to expedite parts returned to the factory for repair or credit, please call the factory at
(800) 289-9100 or (559) 292-1981 to obtain an authorization number (CA number if returned
for credit, and RA number if returned for repair).
•
Two years on Spectra®, Esprit®, ExSite™, and PS20 scanners, including when used in
continuous motion applications.
•
•
Two years on Esprit® and WW5700 Series window wiper (excluding wiper blades).
All merchandise returned for credit may be subject to a 20% restocking and refurbishing
charge.
Eighteen months on DX Series digital video recorders, NVR300 Series network video
recorders, and Endura™ Series distributed network-based video products.
Goods returned for repair or credit should be clearly identified with the assigned CA or RA
number and freight should be prepaid. Ship to the appropriate address below.
•
•
One year (except video heads) on video cassette recorders (VCRs). Video heads will be
covered for a period of six months.
If you are located within the continental U.S., Alaska, Hawaii or Puerto Rico, send goods to:
Six months on all pan and tilts, scanners or preset lenses used in continuous motion
applications (that is, preset scan, tour and auto scan modes).
Service Department
Pelco
3500 Pelco Way
Clovis, CA 93612-5699
Pelco will warrant all replacement parts and repairs for 90 days from the date of Pelco
shipment. All goods requiring warranty repair shall be sent freight prepaid to Pelco, Clovis,
California. Repairs made necessary by reason of misuse, alteration, normal wear, or accident
are not covered under this warranty.
If you are located outside the continental U.S., Alaska, Hawaii or Puerto Rico and are
instructed to return goods to the USA, you may do one of the following:
If the goods are to be sent by a COURIER SERVICE, send the goods to:
Pelco assumes no risk and shall be subject to no liability for damages or loss resulting from
the specific use or application made of the Products. Pelco’s liability for any claim, whether
based on breach of contract, negligence, infringement of any rights of any party or product
liability, relating to the Products shall not exceed the price paid by the Dealer to Pelco for
such Products. In no event will Pelco be liable for any special, incidental or consequential
damages (including loss of use, loss of profit and claims of third parties) however caused,
whether by the negligence of Pelco or otherwise.
Pelco
3500 Pelco Way
Clovis, CA 93612-5699 USA
If the goods are to be sent by a FREIGHT FORWARDER, send the goods to:
Pelco c/o Expeditors
473 Eccles Avenue
The above warranty provides the Dealer with specific legal rights. The Dealer may also have
additional rights, which are subject to variation from state to state.
South San Francisco, CA 94080 USA
Phone: 650-737-1700
Fax: 650-737-0933
REVISION HISTORY
Manual # Date
Comments
C539M
1/98 Original version.
8/01 Baud reference correction.
C539M-A
12/01 Completely revised and updated to include added protocols, and appendix.
Pelco, the Pelco Logo, Camclosure, Esprit, Genex, Legacy, and Spectra are registered trademarks of Pelco.
Intercept, Endura, and ExSite are trademarks of Pelco.
© Copyright 2001, Pelco. All rights reserved.
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