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C Plus
DISPATCH DISPLAY AND COMPUTER INTERFACE UNIT
Service and Installation Manual
P/N 05 50 0600
© 2003 2005 Cimarron Technologies Corp., Escondido, CA, USA.
All rights reserved. No part of this manual may be reproduced in any way without the express written permission of Cimarron Technologies Corporation.
C Plus Dispatch Display and Computer Interface Manual © 2003 - 2005 Cimarron Technologies Corporation All rights reserved Cimarron Technologies Inc. 934 S. Andreasen Suite G Escondido, CA 92029 USA Voice FAX Email Web : 760-738-3282 : 760-480-0233 : [email protected] : www.cimtechcorp.com
Cimarron Technologies Corporation is a licensee of the Motorola MDC-1200 Protocol technology as well as the Kenwood FleetSync Protocol. MDC-1200 is a registered trademark of Motorola Inc. FleetSync is a trademark of Kenwood Corporation GE-STAR is a registered trademark of General Electric Corporation Not all described features are included with all systems. Contact Cimarron Technologies for instant access to particular features.
Manual revision C Plus 050830
ii
Contents
C H A P T E R 1 FEATURES ........................................................6
What Is the C Plus.......................................................................................................................6 Capabilities ..................................................................................................................................6 Specifications ...............................................................................................................................8 Enhancements..............................................................................................................................9
C H A P T E R
2
INSTALLATION...............................................11
Interfacing to a Radio System ..................................................................................................11 Jumper Information..................................................................................................................11 Radio Connections ....................................................................................................................13 Data Output ............................................................................................................................ 14 Channel Busy ......................................................................................................................... 14 Channel Acquired................................................................................................................... 14 PTT Input ............................................................................................................................... 15 Transmit Control .................................................................................................................... 15 Key Output ............................................................................................................................. 15 OUT1, OUT2 ......................................................................................................................... 15 Data Input............................................................................................................................... 16 RX Mute Output..................................................................................................................... 16 Remote Clear.......................................................................................................................... 17 RX Inhibit............................................................................................................................... 17 IR Disable............................................................................................................................... 17 Ground.................................................................................................................................... 17 Block Diagram ...........................................................................................................................18 Interfacing to a Computer or Printer......................................................................................19 RS-232 Port............................................................................................................................ 19 IR Port (Not yet implemented) ............................................................................................... 19 USB Port (Not yet implemented) ........................................................................................... 19
C H A P T E R
3
PROGRAMMING ..........................................20
Programming.............................................................................................................................20 Editing the Alias Table .............................................................................................................21 Programming the C Plus Personality ......................................................................................22 Unique Settings for DTMF Mode ............................................................................................23 ID Qualifying ......................................................................................................................... 24 Timing .................................................................................................................................... 24
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Status Reporting ..................................................................................................................... 24 Character Substitution ............................................................................................................ 25 Muting .................................................................................................................................... 25 Setting the Date and Time ........................................................................................................25 Editing the Message Table........................................................................................................25 Programming New Flash ..........................................................................................................27 Enable "AUTHORIZE" Mode.................................................................................................27
C H A P T E R 4 OPERATION ................................................................28
Decoding Capabilities ...............................................................................................................28 Front Panel Displays and Controls..........................................................................................28 C Plus I................................................................................................................................... 28 C Plus II.................................................................................................................................. 29 C Plus III ................................................................................................................................ 30 Alarms and Alerts, Critical Message Designation..................................................................31 Alarms .................................................................................................................................... 31 Alerts ...................................................................................................................................... 31 Critical Message Designation................................................................................................. 32 ID Sensitive Alerts ................................................................................................................. 32 Authorize Mode .........................................................................................................................32 Operating with a Cimarron CDT ............................................................................................33 Outgoing Commands Supported ............................................................................................ 33 Operating in DTMF Mode .......................................................................................................35 Decode/Display ...................................................................................................................... 35 Unique ID Messages .............................................................................................................. 35 Resource Mapping ....................................................................................................................35 Outputs ................................................................................................................................... 35 Inputs...................................................................................................................................... 35 Resource Status ...................................................................................................................... 36
C H A P T E R
5
TECHNICAL INFORMATION..........................37
Communications Ports..............................................................................................................37 RJ-11 Serial Port Description................................................................................................. 37 IR Port Description (Not yet implemented) ........................................................................... 38 USB Port Description (Not yet implemented)........................................................................ 39 Port Assignments.................................................................................................................... 39 CDT Hand-held Terminal ........................................................................................................40 Output Formats.........................................................................................................................41 Cimarron Standard ................................................................................................................. 41
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MODAT ................................................................................................................................. 43 BED-31/1207 Output Format................................................................................................. 43 Extended BED-31/1207 Output Format................................................................................. 44 Cimarron Translated Output Format ...................................................................................... 44 Generic 21 Bit Output Format................................................................................................ 45 CML Output Format............................................................................................................... 45 Cimarron MultiChannel ANI Format..................................................................................... 46 Cimarron Standard Classic..................................................................................................... 49 GE Star Format Selections........................................................................................................51 Changing the format selection: ................................................................................................52 GE Star Message Descriptions .................................................................................................53 FleetSync ID and Message Description................................................................................54 MDC-1200® ID and Message Description ..............................................................................55 Wild Cards ............................................................................................................................. 55 Variable ID............................................................................................................................. 55 Call Alert ................................................................................................................................ 55 Radio Check ........................................................................................................................... 55 Voice Selective Call ............................................................................................................... 55 MDC Repeater control messages ........................................................................................... 56 NYSP (New York State Patrol) Format ..................................................................................57 Printer Serial Output: ............................................................................................................. 57 Computer Interface Serial Output: ......................................................................................... 58 DTMF Decoding .................................................................................................................... 59 Tone Remote Compatibility .....................................................................................................59 Radio Interface Considerations ...............................................................................................59 Trunking/Conventional .......................................................................................................... 59 Transmit Timers ..................................................................................................................... 60
C H A P T E R
6
TROUBLESHOOTING .........................................65
Performing Self Tests................................................................................................................65 Installation Hints .......................................................................................................................66 Isolating System Problems........................................................................................................67 Power Supply Schematic ..........................................................................................................68 Line Input/Output Schematic ..................................................................................................69 Radio Interface Schematic........................................................................................................70
CHAPTER 7 PRODUCT SUPPORT ............................................................71
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APPENDIX A MESSAGE TABLE DEFAULTS .............................................72 APPENDIX B DEFAULT HARDWARE AND PERSONALITY CONDITIONS73
Default hardware conditions for the C Plus ...........................................................................73 Default personality conditions for the C Plus I ......................................................................73 Default personality conditions for the C Plus II and III........................................................74
APPENDIX C DISPATCH DISPLAY DIRECTIVES .....................................75 APPENDIX D TRUNKING MODE ............................................................76
LTR Systems..............................................................................................................................76 MPT-1327 Systems....................................................................................................................77
INDEX .......................................................................................................78
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Chapter 1
Features
C H A P T E R Features
1
What Is the C Plus
The C Plus is a data encoder and decoder capable of communicating in any of the following formats: GE Star®, MDC-1200®, FleetSync, NYSP GE Star® and DTMF. It is built to help fleet dispatchers/controllers to communicate with and manage their fleets. The C Plus family consists of a C Plus I (no alphanumeric display), a C Plus II (Single window alphanumeric display) and a C Plus III (multiple window alphanumeric display). The C Plus was developed to be: · · · · · · Friendly with current technology Real-Time Interactive and Flexible Powerful and Easy to Use Flash programmable to allow for future features and systems Industrial-strength
Capabilities
The C Plus family provides these capabilities: · · · · User programmable to communicate in any of the following formats: GE Star®, MDC-1200®, FleetSync, NYSP GE Star®, and DTMF. Dual or triple format decode, allowing one C Plus to decode two or three selected signaling formats. Full two way signaling with GE Star® format. Automatic emergency acknowledgments with all formats. Two-way compatible with MDC-1200 radio check, sel call, open microphone monitor, and call alert signaling of the Motorola Stat Alert feature set. Capable of encoding and responding to MDC-1200® Repeater Access, Setup and Knockdown signaling. Programmable to decode, display and acknowledge up to eight MDC1200® short status messages. Large, highly visible main display. Multiple window displays are available, capable of simultaneously displaying up to six of the last received ID's. Alias programmable, relating ID's to alphanumeric aliases of up to eight characters long. In MDC-1200 signaling, decodes and displays the entire allowable HEX ID set. All Star bit formats are supported. Decodes and displays both the FleetSync fleet number and unit ID.
· · · · · · · ·
Chapter 1 · · · · ·
Features
7
Message types can be renamed to permit customized systems. Allows the review display of the last twenty received messages. Data Mute relay output provides N.O. and N.C. relay contacts to be used to mute associated receiver during data reception. COS qualified muting. Keeps the associated radio audio muted until after a valid decode and remutes the audio when signal reception ends. Two programmable open-collector outputs can be related to the reception of types of messages. Outputs can be used to trigger external alarms, autodialers, counters, etc. Internal sounder can be programmed to create different audible alerts depending on message type received. "Ambush", permits user to tell the C Plus to send a message to a unit as soon as the unit is heard from again. This allows the preparation of radio-kill or selective call messages even when the target radio is turned off or out of communication range. A maximum of 10 messages can be queued for transmission. "Authorize", permits the C Plus to be used to allow only authorized users access to repeater systems. "Enunciate" feature allows unique tones to be sounded when specific ID's are received. Equipped with Serial port, IR port and USB port to facilitate connection to modern IT equipment. (IR and USB Not yet implemented) User programmable for a selection of many output formats. Built in ATE performs loop-back tests, data modulation tests and line output tests. Programmable display type permits "Taxi Bid", "Scrolling", and "Message and Assignment" presentations. Incorporates a real time clock so all received data is time stamped. Fully functional in trunking and conventional environments. Compatible with Tone remote key and function tones. External display clear connection can be attached to a footswitch to clear the display by a dispatcher without reaching for the decoder. For two-way signaling, a hand-held terminal (CDT) can be used or Cimarron software can be used in a laptop for wireless connection via the IR transceiver. (IR Not yet implemented) Audio connections can be balanced or single ended, 600 ohm or high impedance circuitry. AGC conditioning precludes the need for any adjustments on the receive side. Rack mountable and many units can be "hubbed" together via USB or serial port to accommodate complex mixed format and/or multiple
· ·
· · · · · · · · · · ·
· · ·
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Chapter 1
Features radio systems. (USB Not yet implemented) In order to provide these services, the C Plus must be correctly installed and programmed. Some features may require the use of a compatible laptop computer, pocket computer or hand-held terminal.
Specifications Data Formats Modulation Type
GE Star® MDC-1200® FleetSyncTM DTMF Allowed Characters Maximum Length Twist Acceptance Noise Tolerance Frequency Tolerance Minimum digit length
GE Star®, MDC-1200®, FleetSyncTM, NYSP, DTMF
PSK 400 BPS on 1600Hz ± 1.5% carrier FSK 1200 BPS at 1200/1800Hz MSK 1200 BPS at 1200/1800Hz 0 through 9, A, B, C, D, * or E, # or F Eight characters or Seven plus status -8 to +4 dB -12dB ± 2.5% of DTMF Frequency programmable 25mS to 5000mS programmable 50mS to 9999mS If enabled, first or last received character refers to status If enabled, maximum of 5 character prefix qualifies decode Review twenty previous messages by pressing "REVIEW" button on C Plus II and C Plus III
Maximum inter-digit pause Status Reporting ID Qualifying
Display Memory Display Type
C Plus I
Ten LED's indicating: Mute, Decode, Transmit Busy, Key, Modulation, IR Disable, System Error, Transmit I/O, Receive I/O and Power Eight large (0.7") 5x7 pixel LED display matrixes capable of displaying up to eight digit number or alphanumeric alias. Eight large (0.7") 5x7 pixel LED display characters capable of displaying up to eight digit number or alphanumeric alias. Twenty Eight 0.3" 5x7 pixel LED display characters capable of displaying programmed message and assignment fields or up to six of the previously received ID's or aliases
C Plus II
C Plus III
Data Input
Chapter 1 Single ended Balanced 30mv to 12Vpp
Features
9
600 : -30 to +10dBm; Hi Z: -36 to +4dBm
Data Output
Single ended Balanced 600 : to 14Vpp 600 : to +10dBm; Hi Z: to +16dBm
Interfaces
Serial RS-232C, ASCII via RJ-11 connection, programmable Baud Rate: 1200, 2400, 4800, 9600 Data Bits: 7 or 8 Parity: Odd, Even or None Handshake: None Power: +5VDC on pin 1 to supply CDT USB Type B USB connector on back of decoder Complies with USB specification Rev. 1.0 USB Human Interface Devices /Monitor Control Class (Not yet implemented) IR IrDA Compliant, 9600 Baud, Distance up to 12 ft with maximum 15° of Horizontal and Vertical center (Not yet implemented) Form C Relay, 1A, N.C., N.O. and Armature. Open collector transistor, sinks up to 500mA Two open collector transistors, sink up to 500mA each. Software programmable to respond to any number of selected message types.
Data Mute Key Output External Alarms
Dimensions
C Plus I C Plus II C Plus III 7.87" x 6.25" x 2.5" 7.87" x 6.25" x 2.5" 7.87" x 6.25" x 4.75" 5 VDC ± 5% at 2 A Audible 3400 Hz 80db(A) @ 2'. Programmable
Power Requirements Sounder Enhancements
Cimarron's C Plus is modularized to allow you to enhance your capabilities without returning the unit for upgrade. Most of these features can be activated over the telephone.
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Chapter 1
Features Optional features and software modules include: · · · · · · Aliasing Two way communications Dual and Triple format decode permits multiple ANI signaling type fleets Tone remote compatible with Key and function tones User interface software to send base to mobile messages (selective call, open mike monitor, interrogate, radio kill, etc. (Not yet implemented) System software for compatibility and access to the C Plus IR and USB ports. (Not yet implemented)
Chapter 2
Installation
11
C H A P T E R Installation
2
Interfacing to a Radio System Jumper Information
Jumper JP-1 JP-2 JP-3 JP-4 JP-5 Default Out Out In Out 8-7 In 6-5 Out 4-3 Out 2-1 Out In In Out Out Out In Out Out Out In Purpose For factory use. Applies 5VDC to the RJ-11 serial connector to power an external CDT. Attaches RxMute Output to the normally open contacts of the mute relay. Attaches RxMute Output to the normally closed contacts of the mute relay. Provides 0dB of gain. Provides 12dB of gain. Provides 24dB of gain. Provides 36dB of gain. Applies a ground to RxMute Common. Internally references the data in common line to ground. Adds 6 dB of attenuation to the data in signal. For use only in balanced systems. Adds 12 dB of attenuation to the data in signal. For use only in balanced systems. Adds 18 dB of attenuation to the data in signal. For use only in balanced systems. Adds 6 dB of attenuation to the data in signal. For use only in unbalanced systems. Adds 12 dB of attenuation to the data in signal. For use only in unbalanced systems. Adds 18db of attenuation to the data in signal. For use only in unbalanced systems. Internally applies a 600-ohm termination to the data input lines. For use in balanced systems requiring termination. Grounds the microprocessor side of channel busy. If channel busy is programmed for active low and JP-2 is intact, the C Plus will always believe that the associated radio channel is available (not-busy). Adds a pull-up resistor to the PTT input line. For factory use. For factory use. Connects PTT in with KEY out. In conjunction with JP-21, selects NPN transistor for PTT input circuit. This provides a crossover point of 0.5VDC ± 0.3vdc for the detection of PTT.
JP-6 JP-7 JP-8 JP-9 JP-10 JP-11 JP-12 JP-13 JP-14 JP-15
JP-16 JP-17 JP-18 JP-19 JP-20
Out Out Out Out In
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Installation
JP-21
In
JP-22
Out
JP-23
Out
JP-24 JP-25 JP-26 JP-27 JP-28 JP-29
Out In Out Out Out Out
In conjunction with JP-20, selects NPN transistor for PTT input circuit. This provides a crossover point of 0.5VDC ± 0.3vdc for the detection of PTT. In conjunction with JP-23, selects PNP transistor for PTT input circuit. This provides a crossover point of 2.8VDC ± 0.3vdc for the detection of PTT. In conjunction with JP-21, selects PNP transistor for PTT input circuit. This provides a crossover point of 2.8VDC ± 0.3 vdc for the detection of PTT. Add for 600 Ohm balanced configuration only Internally references the Data Out common line to ground. For future use Add for 600 Ohm balanced configuration only For factory use. For factory use.
The C Plus is shipped configured for a High Z ground referenced system. Typically, for a balanced system, you will want to remove JP-11, JP-25 and JP-7 and add JP-8. To have the C Plus terminate the line, also add JP-14 which applies a 600 ohm termination to the data input lines. Jumpers JP-13, 12, 11, 10, 9 and 8 set up attenuation circuits. Only one of these jumpers should be installed. JP-13, 12 and 11 are for unbalanced systems and JP-10, 9 and 8 are for balanced systems.
Chapter 2
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Radio Connections
Signal Connection P2-1 DATA OUT + Use Signal output (high side) from the C Plus. Jumper selectable for high impedance single ended (to 14Vpp) or 600 ohm balanced (to +10dBm). Relay switched, connected only during data generation. Capacitively coupled. Signal output (low side) from the C Plus. In high impedance single ended, this line is referenced to ground. In balanced, it is signal return. Relay switched, connected only during data generation. High impedance input. Connect to a point that changes state when radio is receiving (busy). Used to prevent the C Plus from transmitting over a busy radio channel. Also used in COS qualified mute and Ambush feature. To enable this line, jumper JP-15 must be removed. Used in trunking only. Connect to a point that changes state when the channel has been acquired and transmission is authorized. Detects when the radio is transmitting to prevent sending data while a local user is speaking. Open collector output follows Key output. Active low during data transmission. Used to defeat CTCSS or disable microphone during data transmissions. Sinks up to 500 mA. Open Collector output, active during attack delay and data transmission. Capable of sinking up to 500 mA to within 0.7v of signal ground. Used to key up the associated transmitter. Programmable to be active with received message types. When the associated message type is received, this open collector output becomes active (low) for two seconds. Capable of sinking up to 500 mA. Programmable to be active with received message types. When the associated message type is received, this open collector output becomes active (low) for two seconds. Capable of sinking up to 500 mA. Ground Signal input (high side) to the C Plus. AGC conditioned. Jumper selectable for high impedance single ended (30mV to 12Vpp), high impedance balanced or 600 ohm balanced (-30dBm to +10dBm). Signal input (low side) to the C Plus. In high impedance single ended, this line is referenced to ground. In balanced, it is signal return. Relay output, jumper selectable for N/O or N/C configuration. Used to momentarily interrupt radio speaker audio to prevent the data burst from being heard. Relay output used in conjunction with RXMUTE
P2-2
DATA OUT CHBSY IN
P2-3
P2-4 P2-5 P2-6
CHAQR IN PTT IN TXCTL OUT KEY OUT OUT 1
P2-7
P2-8
P2-9
OUT 2
P2-10 P3-1
GROUND DATA IN + DATA IN RXMUTE OUT RXMUTE
P3-2 P3-3
P3-4
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Installation
P3-5 P3-6 P3-7 P3-8
OUT COM REM CLR RX INHIB IR DISABLE GROUND
OUT. Jumper selectable for either "isolated armature" or ground. Isolated input used to clear the display. Performs the same function as the front panel push button "Clear". Ground to activate. Prevents decoding from taking place if signal is active. Used in shared trunking systems to prevent decoding of all signals present on discriminator. Disables the Infrared transceiver when grounded. Ground
Data Output
Data output can be jumpered for high impedance or 600 ohm balanced output. If connecting to a radio, data output should be interfaced to a point after pre-emphasis and Data Out - should be jumpered for ground. The output level must be adjusted so that data out deviation is just below that of transmitted voice deviation. Data output is relay coupled to the connector on the back of the C Plus. Because of this, any loading occurs only during data transmission when the relays are activated. The circuit is MOV protected. When tone remote keying is enabled, the maximum output data level into a 600 ohm balanced load is 2dbm instead of 10dbm. This allows a more flexible range of tone level vs data level. When adjusting transmit levels, adjust the data level first using potentiometer R5. Then adjust the tone level from the setup menu.
Channel Busy
Channel busy input is used to determine if the radio is in the process of receiving (and therefore, the frequency is occupied). Typically, channel busy would be attached to a squelch or CTCSS circuit that changes state when receiving. This line is only necessary in two-way systems that are capable of transmitting. This sense is especially important systems that will autonomously transmit messages to vehicles (e.g. Ambush). Channel Busy input sense can be programmed to be active when high or when low. Channel busy can also be used to qualify data mute. In COS Qualified muting, the associated radio is muted by the C Plus until a valid data decode. Once the data has passed, the radio is unmuted and remains unmuted until the Channel Busy line changes state. At that time, the radio is again muted. When using Ambush feature, this line is necessary to hold off transmitting queued messages when the radio is busy. Note that JP-15, which is inserted at the factory, holds channel busy to a known state. This jumper must be removed for the channel busy input to function.
Channel Acquired
Channel Acquired input is only used in Trunking environments. This line is interfaced to a point in a trunking radio that changes state when granted access. The line is programmable for input sense (active high or active low). Some trunking radios have channel acquired logic which pulses while attempting to be granted access and then remain in a state showing access is granted. For this reason, the line is also programmable to set the debounce time so that pulsing is ignored. The unit will not transmit data until the
Chapter 2
Installation
15
specified time period has been exceeded. Two other timers are associated with trunking environments. Those are Trunk Timeout and Trunk Key. Trunk Timeout sets the maximum amount of time that the unit will attempt to acquire a trunk. Once exceeded, the unit will quit attempts. Trunk Key sets the time the unit is keyed while awaiting channel acquisition. In LTR systems, Trunk Key Time and Trunk Timeout should be the same. In MPT1327, this timer allows the transmitter to be keyed and then unkeyed in order to request channel access. The time selected is the period the unit stays keyed. The C Plus will wait for the period designated in Trunk Timeout for a channel acquisition indication. When received, the unit will again key up and send out data.
PTT Input
PTT input is used to detect when the attached radio is busy transmitting. This line is programmable for input sense active high or active low. There are also jumpers that select whether the input is to NPN transistor circuitry or PNP transistor circuitry. This difference changes the validity threshold. If PNP is selected, the state change voltage is 2.8 (± 0.3) VDC. If NPN is selected, the voltage is .5 (± 0.3) VDC.
Transmit Control
Transmit Control output is an open collector output which goes low during data transmission. This line can be used to defeat CTCSS when sending data. It can also be used to disable the microphone to avoid data corruption in environments with high ambient noise.
Key Output
Key output is an open collector output that becomes active during transmit attack delay and data transmission. This line is used to key the associated transmitter. Key output is disabled during local loop-back testing.
OUT1, OUT2
OUT 1 and OUT 2 are open collector outputs capable of sinking up to 500 mA to within 0.7v of signal ground. These outputs are programmable to be associated with received message types. When the associated message type is received, the output goes low for two seconds. This is useful for activating external alert systems or auto-dialers. They can also be used to remotely control devices via external relays. If the C Plus is placed in the "Authorize mode" from the programming main menu, previously programmed functions of OUT1 and OUT2 are superseded and they perform as follows: 1. Open collector OUT1 becomes active goes to within 0.7v of signal ground (capable of sinking up to 500mA), while OUT2 remains inactive, providing a high impedance. 2. The C Plus begins monitoring channel busy for activity. 3. If activity is detected on channel busy, the C Plus listens for ANI. 4. If ANI data is detected, and the decoded ANI ID is present in the ALIAS table, OUT1 and OUT2 reverse states, bringing OUT1 to high impedance and OUT2 to within 0.7V of signal ground. 5. This reversal remains in effect until channel busy becomes inactive, then
16
Chapter 2
Installation OUT1 and OUT2 reverse to their original states. 6. If no ANI data is detected or the decoded ANI ID is not present in the ALIAS table, OUT1 and OUT2 remain in their original states.
Data Input
Data input can be jumpered for high impedance or 600 ohm terminated, balanced or single ended. The input is capacitively coupled for DC blocking and is MOV protected. When interfacing to a radio, connection should be made before deemphasis (flat audio). Data input should be jumpered for high impedance and data input - should be jumpered to ground. If connected to a balanced line, remove data input - ground jumper (JP-7) and install the 600 ohm jumper (JP-14) to terminate (if this is the only device on the leg) or remove the 600 ohm jumper (JP-14) to offer high impedance (if another device is on the leg and is terminated). Data input is AGC conditioned so generally, no adjustment is necessary. A test point (TP-7) is provided for O'scope analysis. If the signal is clipped and distorted, a potentiometer and a bank of gain jumpers can reduce gain. Alternately, if the signal is too weak, gain can be increased. Solder bridge jumpers are available as described in the table below. Only one jumper should be used at a time. Input Signal Attenuation 18 dB 12 dB 6 dB Unbalanced JP-13 JP-12 JP-11 Balanced JP-10 JP-9 JP-8
If necessary, header JP5 provides for an amplification stage to increase the data input signal. The following table describes jumper positions corresponding to amplification factors available. Input Signal Amplification Jumper position Absolute Max signal at TP10 0 dB 7 to 8 1.6 VPP 12 dB 5 to 6 0.65 VPP 24 dB 3 to 4 0.2 VPP 36 dB 1 to 2 0.05 VPP TP-7 is available from the back of the C Plus enclosure. The signal should be well rounded with no clipping or distortion. A level of 500 mV is optimum. TP-10 monitors the previous stage. If the absolute maximum signal level described above is exceeded, distortion will occur, and decoding will be degraded.
RX Mute Output
RXMute Out and RXMute Out Com provide a data mute output feature that can be used to remove data audio from the local audio path. Two muting methods are available and can be chosen in the C Plus personality programming.
Mute on RX Data Only
In this mode, the C Plus mute relay can be used to momentarily interrupt speaker audio during receipt of data, preventing most of the data burst from being heard through the receiving radio's speaker. The speaker audio can be routed in series with the unit's mute relay, or the mute relay can shunt a low power audio pre-amplifier signal to ground. Jumpers are
Chapter 2
Installation
17
provided to select normally open or normally closed relay contacts and to jumper for either isolated armature or ground.
Unmute After Data (COS Qualified)
In COS Qualified muting, the associated radio is constantly muted by the C Plus until a valid data decode. Once the data has passed, the radio is unmuted and remains unmuted until the Channel Busy line changes state. At that time, the radio is again muted. In this manner of muting, the entire data burst is omitted. However, users without ANI data will not unmute the receiver and they will not be heard. To activate the Channel Busy line, remove jumper JP-15.
Remote Clear
Remote Clear is an isolated input which performs the same function as the front panel push button "Clear". This line can be connected to a normally open foot switch. When the dispatcher presses the foot switch, the main display will be cleared. If the switch is pressed again within 1 second of the first press, the C Plus III secondary display will be cleared as well.
RX Inhibit
RX Inhibit prevents the C Plus from decoding and displaying received signals. If the RX Inhibit line is active, the C Plus ignores received data. This is useful in shared systems to qualify which signals on the discriminator should be decoded.
IR Disable
IR Disable disables the Infrared transceiver when grounded.
Ground
It is extremely important that a separate ground line be run between the associated radio system and the C Plus. Incorrect grounding will result in inconsistent encoding, decoding and key and mute functions. In all systems, be sure to attach station ground here.
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Chapter 2
Installation
Block Diagram
Antenna
Microphone
Mic Amp
PreEmphasis
Limiter
Txmitter
TX LED
TXCtl Out
DOutB
DOutA
PTTin
KeyOut CHAqrIn (Trunk) RX INHIB CHBsyIn Radio Control
GND DInB
TRANSMIT side C Plus RECEIVE side C Plus DInA RXMuteOut
Antenna
RF Amp
IF
Discriminator
DeEmphasis
Speaker
CTCSS/ SQ
Chapter 2
Installation
19
Interfacing to a Computer or Printer
The C Plus has three communication ports to facilitate data output to a printer, console or computer. For port specifics, please refer to chapter 5, Technical Information.
RS-232 Port
On the back of the C Plus, there is an "RJ-11" six conductor phone jack. This port can be programmed as a printer port and be connected directly to a serial printer to record channel activity. Output format and characteristics are user programmable. Baud rates available are 1200, 2400, 4800 and 9600 with 7 or 8 data bits and odd, even or no parity. Output format types are user selectable from the following types: Cimarron Standard, MODAT, BED31/1207, Cimarron Translated Output, Generic 21 Bit Output, CML, Cimarron Traditional and Cimarron Multichannel. Examples of these outputs can be found in chapter 5, Technical Information. The RS-232 port can also be used to connect to the serial port of a computer. This port is capable of two way communications, accepting commands for transmission to remote radios.
IR Port (Not yet implemented)
The front of the C Plus is equipped with an IR transceiver which complies with the IrDA standard. This port has a typical viewing range of up to 12 feet with a maximum of 15° of horizontal and vertical center. The port can be used in conjunction with pocket PC's or laptop PC's running Cimarron software as a user interface for two way commands. The port can also be programmed to function in the same manner as the RS-232 port described above.
USB Port (Not yet implemented)
The USB port can be used to link multiple C Plus units together into one system by using commercially available USB hubs. Each C Plus can be assigned a channel number and interfaced to independent RF communications systems. In this manner, one computer dispatching system has access to all RF communications systems. The port can also be programmed to function in the same manner as the RS-232 port described above.
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Chapter 3
Programming
C H A P T E R Programming
3
Programming
The C Plus can be programmed via any of the three I/O ports (the RJ-11 serial connection, the IR transceiver or the USB connection). The IR port and the USB port require Cimarron communications software and a computer equipped with either an IR port or a USB port. The RJ-11 serial connection can be used with any computer running terminal emulation software like "Hyperterm" (Included in Windows 95, 98 and NT), "Terminal" (Windows 3.1) or any version of "Procomm" (third party software). Upon initial power-up, the C Plus begins sending ctrl E (05h) out the RJ-11 port. If a CDT is connected, it will respond with ctrl F (06h). If the response ctrl F (06h) is not present, the C Plus understands that a CDT is not connected. The C Plus begins listening at 9600, N, 8, 1 for a user sign-on message. The C Plus remains in this listening mode for 10 seconds. During the entire 10 second listen mode, the C Plus sends the CDT query once a second. If, during the listen mode, a user enters the phrase "$$CPlus", the device remains at 9600, N, 8, 1 and enters program mode. If no sign-on message is received at the end of 10 seconds, the C Plus configures the serial port in the manner stored in memory. If there is no preference programmed, the C Plus remains at 9600, N, 8, 1. The C Plus will respond to the sign-on message even after the initial 10 seconds if the sign-on is sent in the baud rate/protocol specified in memory. If the C Plus is permitted to enter program mode, the main menu is outputted and the device awaits input from the user. When in program mode, the C Plus suspends normal operation until program mode is exited.
HELLO MAKE YOUR SELECTION FROM THE FOLLOWING OPTIONS 1. 2. 3. 4. 5. 6. 7. ACCESS THE ALIAS TABLE PROGRAM THE C PLUS PERSONALITY SET THE DATE AND TIME ACCESS THE MESSAGE TABLE PROGRAM NEW FLASH ENABLE "AUTHORIZE MODE" NORMAL OPERATION
ENTER YOUR SELECTION: ______
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Editing the Alias Table
Alias tables are created using a text editor like Notepad or Wordpad. A full feature word processor can also be used but the file must be saved in the text only (raw text) format. The constructed alias table must be sorted in order of the eight digit ID field. Microsoft operating systems have a utility called "sort" that can be used to sort the completed alias table. The alias table is constructed as follows:
NNNNNNNN,AAAAAAAA,FFFFFFFFFFFFFFFFFFF,B
Where: N Eight digit ID. For GE Star Format, this number will be between 00000001 and 00016383. In FleetSync, the entry will be a 3 digit fleet assignment a dash and a 4 digit unit ID. (e.g. 123-3289). The fleet assignment must be between 100 - 349. The ID assignment must be between 1000 4999. In MDC, the entry will be a 4 character ID which can include all HEX characters (e.g. A12E). Eight character Alias. Can contain any character in the full ASCII set (except a "," which is used as the field delimiter). Nineteen character assignment field. This information is only displayed or printed if the C Plus is in the "Message and Assignment" presentation instead of the "Scrolling ID's" presentation. For ID sensitive alerts. Can contain a number between 2 and 5. This number reflects the quantity of single beeps the C Plus will sound when PTT ANI is received from the associated ID. (e.g. if the number is 3, the C Plus will sound three short beeps). To have no audible beep for a particular ID, enter a zero (0). If a one (1) is entered, the beep configuration is as described in the message table. This is called the "Enunciate" feature.
A F
B
The alias table can have a maximum of 4000 entries. The table must be in order by the eight digit unit ID. If the table needs to be sorted using the "Sort" routine (included with Windows operating systems), follow the steps below: Save your Alias file as "Aliasin.txt" Run Sort in MSDOS by entering the command as follows: SORT [drive:][path]aliasin.txt>[drive:][path]alias.txt After sorting the alias table, open it again in Notepad and append, as the only character in the last line, a dollar sign ($). This is the end of file designator and must be present. Once a table has been constructed and saved, it can be loaded into the C Plus by following the below procedure: From the main menu, enter selection 1. ACCESS THE ALIAS TABLE. The following menu appears:
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ALIAS EDIT MODE 1. 2. 3. SEND A SORTED TABLE TO THE C PLUS RECEIVE THE TABLE FROM THE C PLUS ERASE THE C PLUS ALIAS TABLE MEMORY
PRESS BACK SLASH "\" TO GO BACK OR PLEASE ENTER YOUR SELECTION:_
Remember to add a line at the end of the file that contains only a $. This is the end of file marker and must be added after sorting.
Select option 1, SEND A TABLE TO THE C PLUS and when prompted, send (in ASCII format) the previously sorted file (alias.txt) to the C Plus. If a table already exists in the C Plus, it will be overwritten. Note that procedures to send files are different depending on the terminal emulation software you are using. But the file must be sent in ASCII format. To make changes to an existing alias table, select option 2, RECEIVE THE TABLE FROM THE C PLUS. Save the file to your computer. Then open the saved file using a text editor like Notepad or Wordpad. Make the desired changes, save the file and then send the changed table back to the C Plus. If the file is no longer in order, be sure to sort it first. If the alias feature is not desired, select option 3, ERASE THE C PLUS ALIAS TABLE MEMORY. This will delete the table. ID's will be displayed exactly as received.
Programming the C Plus Personality
The C Plus is a multi-feature device capable of encoding and decoding various non-compatible formats as selected by the user. Outputs are varied and are can be selected by the user as well. Because of this flexibility, the C Plus must be programmed with a personality that meets user requirements. To program the C Plus personality, from the main menu, select option 2, PROGRAM THE C PLUS PERSONALITY. A map of the programming tree is shown below:
C PLUS PERSONALITY PROGRAMMING 1. SELECT FORMAT TYPE 1. GE STAR 1. Select STAR T1, T2, S1 values 2. GE STAR NYSP 1. COMPUTER INTERFACE SERIAL OUTPUT 2. PRINTER SERIAL OUTPUT 3. MDC-1200 4. FLEETSYNC 5. DTMF 1. ID Qualifying
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2.
2.
Minimum character duration Inter-character maximum 3. Reporting First/Last/Disable Edit Status Table 1. Send a Table to the C Plus 2. Receive table from the C Plus 4. *=E, #=F Enable/Disable 5. Mute Duration in mS SELECT OUTPUT TYPE 1. CIMARRON STANDARD 2. MODAT 3. EXTENDED BED-31/1207 FORMAT 4. BED-31/1207 5. CIMARRON TRANSLATED OUTPUT FORMAT 6. GENERIC 21 BIT OUTPUT FORMAT 7. CML 8. CIMARRON MULTICHANNEL ANI 9. CIMARRON STANDARD CLASSIC SELECT 1. 2. 3. DISPLAY TYPE TAXI BID SCROLLING MESSAGE AND ASSIGNMENT
1. 2. 3. Timing 1. 2. Status 1. 2.
Total digit quantity Qualifying Quantity Qualifying Definition
3.
4.
SELECT MUTE TYPE 1. MUTE ON RX DATA ONLY 2. UNMUTE AFTER DATA (COS QUALIFIED) DEFINE 1. 2. 6. 4. 5. 6. DEFINE 1. 2. 3. 4. 5. 6. SERIAL PORT PARAMETERS BAUD RATE DATA BITS STOP BITS PARITY END STRING WITH PRINT ONLY CRITICAL MESSAGES RADIO INTERFACE PTT ACT HIGH/LOW CH ACQ ACT HIGH/LOW CH BUSY ACT HIGH/LOW RX INHIBIT ACT HIGH/LOW ATTACK DELAY TRANSMIT MODE 1. CONVENTIONAL 2. TONE REMOTE 1. TONE REMOTE FREQUENCY 2. TONE REMOTE LEVEL 3. TRUNKING 1. KEY TIME 2. DEBOUNCE 3. TIMEOUT ENABLE ACK CAPABILITY
5.
6.
7. 7.
ASSIGN PORTS (Not yet implemented) 1. INFRARED PORT 1. ENABLE/DISABLE 2. ASSIGN AS PRINTER OUT 3. ASSIGN AS TWO WAY TERMINAL 2. RJ-11 SERIAL PORT 1. ASSIGN AS PRINTER OUT 3. USB PORT ASSIGN CHANNEL NUMBER ASSIGN BASE ID NUMBER ENABLE/DISABLE SOUNDER
8. 9. A.
PRESS BACK SLASH "\" TO GO BACK OR PLEASE ENTER YOUR SELECTION:_
Unique Settings for DTMF Mode
If DTMF mode is selected, the following programming options must be
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Programming considered:
ID Qualifying
If ID qualifying is configured, the decoder will only report ID's that contain the correct qualifying digits. Say you have multiple users on one frequency and want only the associated dispatcher to decode their units. You could program total digits to 5, qualifying digits to two and qualifying definitions as 10 for one dispatcher C Plus, 20 for another and 30 for a third. ID's for the first group of units would start with 10 and be 5 characters long (e.g. 10123, 10124, 10125). The C Plus with a qualifying definition of 10 would decode the example ID's and report only the last three digits. In this example, 10123 would display "123" and would not report anything if it decoded 20123. The default is Total Digit Quantity = 8, Qualifying Quantity = 0 and Qualifying Definition blank. This effectively disables ID Qualifying.
Timing
There are two timers unique to DTMF decoding. Minimum Character Duration is the shortest acceptable length of a character. If the character length is less than the definition, then the character is discarded. This allows an ability to adjust sensitivity. Correct DTMF tones can occur naturally in very short duration. This "noise" will decode if not discarded. The default Minimum Character Duration is 50mS. Any occurrence of DTMF that is shorter than 50mS will be treated as noise and discarded. The programmable range is from 25mS to 5000mS. Inter-Character Maximum is the maximum allowable time between characters. Subsequent received characters are assumed to be components of the same string only if they occur before the Inter-Character Maximum has elapsed. The default is 100mS. Any character received after 100mS will be considered a new string of characters and the display will be cleared to prepare for the new string. The programmable range is from 50mS to 9999mS. For manual DTMF number entry via a DTMF pad, set this number high.
Status Reporting
The C Plus can be programmed for status reporting in DTMF format. In this mode, the first or last character of a string received is considered the status and is not reported as part of the ID but is displayed as the associated status instead. A table is provided to assign 8 character maximum status legends for each status. The status table is constructed as follows:
N,C,SSSSSSSS,B,O
Where: N C Single digit number that was received as the status character . This number is removed from the ID and is not displayed. Single character abbreviated status (used in the C Plus III scrolling display). This is equivalent to the "S" in the C Plus Message table Eight character status. This is equivalent to the "M" in the C Plus Message table. Audible alert selection. Messages with B = 2 through 5 are classified as critical statuses. See "Editing the Message Table" for further information.
S B
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O
Assigns an open collector output to function when the status is received. 0 1 2 none Out1 becomes active for 2 seconds Out2 becomes active for 2 seconds
The C plus is shipped with Status Reporting disabled and the following Status table: 0,A,-(NONE)-,1,0 1,1,STATUS-1,2,0 2,2,STATUS-2,2,0 3,3,STATUS-3,2,0 4,4,STATUS-4,2,0 5,5,STATUS-5,2,0 6,6,STATUS-6,2,0 7,7,STATUS-7,2,0 8,8,STATUS-8,2,0 9,E,EMRGENCY,3,1
Character Substitution
When enabled, * becomes displayed as E and # becomes displayed as F. This allows DTMF to be compatible with any alias table used in MDC1200® Format
Muting
Mute duration is assigned as a value from 25mS to 9999mS. The mute relay will become active after Minimum Character Duration has elapsed on the first received character until the programmed Mute Duration time has elapsed.
Setting the Date and Time
From the Main Menu in program mode, select option 3 SET THE DATE AND TIME. The C Plus will return the currently set date and time and prompt you to enter the new date and time. After entering the desired information, press to send the information to the C Plus or to cancel. Time must be entered in 24hour format. Date and time will be retained without external power for a maximum of 12 hours.
Editing the Message Table
Message tables are created using a text editor like Notepad or Wordpad. A full feature word processor can also be used but the file must be saved in the text only (raw text) format. The message table is constructed as follows:
NNN-NNNN,S,MMMMMMMM,B,O
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Chapter 3
Programming Where: N Seven digit binary Star Code or 111-xxxx where xxxx is a message sequence number for MDC1200. FleetSync PTT ANI use star 000-0001. FleetSync emergency use star 000-0111. FleetSync mandown use star 000-1111. Single character abbreviated message. Eight character message. Can contain any character in the full ASCII set (except a "," which is used as the field delimiter). Audible alert selection. Messages with B = 2 through 5 are classified as critical messages. 0 1 2 3 4 5 O silent single beep of 250ms. short beeps, 250ms on and 100ms off repeated for 5 seconds. long beeps, 500ms on and 500ms off repeated for 5 seconds. short beep, long beep, 250ms on, 250ms off, 500ms on, 500ms off repeated for 5 seconds. continuous tone for 5 seconds
S M B
Assigns an open collector output to function when the message is received. 0 1 2 none Out1 becomes active for 2 seconds Out 2 becomes active for 2 seconds
The C Plus is shipped with the message table entries defined in Appendix A. The table ends with a line containing only "$". Once a table has been constructed and saved, it can be loaded into the C Plus by following the below procedure: From the main menu, enter selection 4. ACCESS THE MESSAGE TABLE. The following menu appears:
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MESSAGE EDIT MODE 1. 2. SEND A TABLE TO THE C PLUS RECEIVE THE TABLE FROM THE C PLUS
PRESS BACK SLASH "\" TO GO BACK OR PLEASE ENTER YOUR SELECTION:_
Remember to add a line at the end of the file that contains only a $. This is the end of file marker and must be added after sorting.
Select option 1, SEND A TABLE TO THE C PLUS and when prompted, send (in ASCII format) the previously constructed file (message.txt) to the C Plus. If a table already exists in the C Plus, it will be overwritten. Note that procedures to send files are different depending on the terminal emulation software you are using. But the file must be sent in ASCII format. To make changes to an existing table, select option 2, RECEIVE THE TABLE FROM THE C PLUS. Save the file to your computer. Then open the saved file using a text editor like Notepad or Wordpad. Make the desired changes, save the file and then send the changed table back to the C Plus.
Programming New Flash
From the main menu, enter selection 5. PROGRAM NEW FLASH and when prompted, send (in ASCII text format) the new flash. Download time is approximately 6 minutes.
Enable "AUTHORIZE" Mode
Authorize mode is a method to filter out unauthorized users of repeater systems or use the C Plus to activate alarms. In this mode, the C Plus monitors channel busy for activity and looks for ANI. If the ANI ID is not present or is present but is not in the authorized users list (alias list) then the C Plus will toggle Out1 and/or Out 2 to lock out the repeater transmitter stage (or activate remote alarms). The lock out will remain in effect until the channel busy line shows lost activity. If Authorize mode is enabled in programming, the user is asked if the mode is to react to all message types or react only to critical messages. This additional filter can be used to activate remote alarms if the message received was from an authorized user and the message was critical. Critical messages are defined as those with a beep value greater than 1.
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CHAPTER 4 Operation
Decoding Capabilities
The C Plus family consists of the C Plus I computer interface, C Plus II display unit and the C Plus III display unit. All three are capable of decoding the following formats: Format GE Star MDC-1200 FleetSync NYSP GE Star DTMF Function ANI, ENI, Status, Two way signaling ANI, ENI, Status, Two way signaling ANI, ENI, Status, Two way signaling ANI and ENI in the special NYSP format ANI, ENI, Status, Decode only
For NYSP GE Star® details, see the NYSP section.
Front Panel Displays and Controls C Plus I
The C Plus I is a computer interface device. The front panel consists of LED Indicators describing the functioning of the unit. The LED's and their function are as follows:
Indicator MUTE DEC TXBSY KEY MOD IR DISABLE ERROR TX IO RX IO POWER
Function Lights when the C Plus detects data which may or may not decode. Stays lighted during the entire reception period. Follows the action of the Mute relay. Lights when the C Plus has successfully synchronized with incoming data and is decoding valid data. Indicates that the attached transmitter is busy. Indicates that the C Plus is keying the attached transmitter Indicates that the C Plus is modulating data for transmission. Lighted when the IR device is disabled. Will remain dark whenever the IR transceiver is capable of being used. Flashes when there is an equipment failure. Lights when the C Plus is providing data to an IO port (USB, RJ11, IR). Lights when the C Plus is detecting data from an IO port (USB, RJ11, IR). Indicates that the unit is powered on.
There are two momentary push buttons on the front panel of the C Plus I. The right button is labeled "Reset" and causes the CPU Supervisor to reset all processors. The left button is labeled "IR" and, when pressed, toggles the IR transceiver on or off. If the IR transceiver is disabled, the IR Disable light will be on.
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C Plus II
The C Plus II is a single window dispatch display unit. The display consists of eight large 5x7-pixel LED display matrixes. This display will show either the ID or the associated alias if one is programmed. ID's that do not have an alias associated are displayed as follows: Signaling type GE Star MDC1200 FleetSync Display 1234 A876, 1234, AD90 123-2289 Definition A PTT ID has been received from radio ID 1234 A PTT ID has been received from radio ID (displayed number) which can also contain Hex characters. A PTT ID has been received from radio whose fleet number is 123 and ID is 2289.
ID's can have alphanumeric aliases of up to eight characters in length. Upon receipt of a PTT ID, the alias is displayed instead of the numeric ID. (Requires purchasing the Alias feature)
This is an example of a received FleetSyncTM ID. The three characters to the left of the dash (-) is the fleet ID and the four characters to the right is the unit ID. Fleet and Unit ID pairs can be aliased. This is an example of a received MDC ID and contains HEX characters. All valid MDC ID's (0001 through DEEE) can be displayed and aliased. This is an example of an alias. The unit ID has been assigned the alias "CAPTAIN1". Any time the ID is received by the C Plus, the display will show the alias instead of the ID This is another example of aliasing.
When non-PTT type messages are received, the ID or alias is displayed for 2 seconds and then the message type. The display alternates in 2-second intervals between ID/alias and message type. Message types capable of being displayed for each signaling type are listed below: Signaling type Message type and how displayed
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Chapter 4
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GE Star
MDC-1200 FleetSync DTMF
Status 0, Status 1, Status 2, Status 3, Status 4, Status 5, Status 6, Status 7, Intg Ack, Req Talk, Mssage C, Mssage D, Taxi Bid, Emrgency, Cncl Ack, StuckMic, Mntr Ack, Mssage F, Mssage G, Mssage H, Mssage J, Man Down, Dsbl Ack, Enbl Ack Emrgency, Call Ack, Status 0, Status 1, Status 2, Status 3, Status 4, Status 5, Status 6, Status 7, Access, Setup, Kdown Emrgency, Man Down, Stat 10 through 97 Status-1, Status-2, Status-3, Status-4, Status-5, Status-6, Status-7, Status-8, Emrgency
The C Plus II has two push buttons on the front panel. The right button is labeled CLEAR and clears the display. If a critical message was last received, pressing the button once clears the alert and pressing the button the second time clears the display. Critical messages are defined as any message that has been programmed to sound one of four different tone alerts. Clearing the alert stops the tone from sounding and also stops the display from alternately flashing ID and message type. The left button is labeled REVIEW and when pressed, steps the display through the last 20 received messages. Messages are displayed just as they were received except the left most display shows the order in which the messages were received. The most recent message will be labeled "a". Subsequent messages will be labeled "b", "c" and so forth. To facilitate speedy review, non-PTT messages alternate in 1-second intervals between ID/alias and message type instead of 2-second intervals. To clear the review buffer, press and hold the review button while pressing the clear button. The review memory will be erased. The review buffer resides in SRAM and as such is volatile. If power is lost or removed, the review buffer will be erased.
C Plus III
The C Plus III is a multiple window dispatch display unit. The main display and its features are the same as the C Plus II. In addition to the main display, there is a secondary, smaller display capable of displaying 28 characters just above the two push buttons. This display area is user programmable to present two different features.
Scrolling ID's
The secondary display area can be programmed for scrolling ID's. In this configuration, when a second ID is received, the first received ID or alias will scroll to the secondary position. Leading and trailing blanks will be suppressed. Thereafter, received ID's will scroll in a similar manner until they scroll off of the secondary display. Redundant (identical subsequent) ID's of the same message type will not be displayed. Non-PTT messages will
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31
display the ID/Alias a dash (-) and the message type (abbreviated). E D , R O N E , 1 2 , S U P R V S O R , B 1 6 E
Message and Assignment
The secondary display area can be programmed to display the received message type (8-character max.) and the ID related assignment field (19-character max.) if present in memory.
M A
N
D
O
W N
-
B
U
I
L
D
I
N
G
1
3
F
L
O
O
R
5
Taxi Bid Display
Both the C Plus II and the C Plus III can be programmed to display in the Taxi Bid mode. In this mode, the first received data burst is displayed in the main display area. Subsequent ID's are shown in the secondary display area (for a C Plus III) or are not displayed at all (C Plus II). When either the remote clear or the front panel clear button is pressed, the main display clears and is ready to display the next received ID.
Alarms and Alerts, Critical Message Designation Alarms
In the message table, message types can be flagged to cause an open collector output when received. This output can be used to activate an external alarm system. There are two outputs available at the rear of the C Plus. These are labeled OUT1 and OUT2. The associated transistor circuitry is capable of sinking up to 500 mA. The transistor conducts for a period of 2 seconds when activated by the appropriate received message. Multiple message types can be designated to activate the same output. Only one output can be programmed per message type.
Alerts
In the message table, message types can be flagged to cause an audible alert when received. There are five different sounds that can be assigned to multiple message types. Only one sound can be programmed per message type. The sounds available are as follows: Value 0 1 2 3 4 Alert Silent Single short beep Short beeps Long beeps Short beep, Long beep, repeat Duration