Transceiver Model EL806 Spread Spectrum Data Transceiver Including Instructions for 03-4053A01 Evaluation Development Kit 05-3946A01, Rev.
QUICK START GUIDE The steps below contain the essential information needed to place the OEM transceiver in service. Because the transceiver is designed for use in other pieces of equipment, these steps assume that prior testing and evaluation have been conducted with the host device. If not, please refer to “EVALUATION DEVELOPMENT KIT (P/N 03-4053A01)” on Page 75 for interface wiring and configuration details. 1. Mount the transceiver module using the four holes provided.
CONTENTS 1.0 ABOUT THIS MANUAL.................................................................. 1 2.0 PRODUCT DESCRIPTION .............................................................. 1 2.1 Transceiver Features ................................................................... 2 2.2 Factory Hardware Options ......................................................... 2 2.3 Data Interface and Power (J3) Options ...................................... 2 Antenna Connector (J200/J201)............................
Data Buffer Setting—MODBUS™ Protocol ............................. 16 Hoptime Setting.......................................................................... 16 TotalFlow™ Protocol at 9600 with Sleep Mode ........................ 17 Operation at 115200 bps............................................................. 17 Baud Rate Setting ....................................................................... 17 Radio Interference Checks.......................................................... 17 5.
Entering Commands ................................................................... 35 8.3 Detailed Command Descriptions ................................................ 41 ADDR [1–65000] ....................................................................... 41 AMASK [0000 0000–FFFF FFFF] ............................................ 42 AT [ON, OFF] ............................................................................ 42 ASENSE [HI/LO]................................................................
SAF [ON, OFF] .......................................................................... 53 SETUP ........................................................................................ 53 SER............................................................................................. 53 SHOW CON ............................................................................... 53 SHOW PWR............................................................................... 54 SHOW SYNC..............................
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b) The radio transmitter described herein (IC ID: 3738A-MDSEL806) is approved by Industry Canada to operate with the antenna types listed below with the maximum per-missible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.
Antenna Gain/Power Data (Industry Canada ) Antenna System Gain Maximum Power Setting EIRP (in dBm) (in dBm) 0 dBi Dipole 28.5 36 2 dBi Dipole 28.5 36 7.1 dB Omni 28.5 36 8.5 dBi Yagi 27 36 (Antenna Gain in dBia minus Feedline Loss in dBb) a. Most antenna manufacturers rate antenna gain in dBd. To convert to dBi, add 2.15 dB. b. Feedline loss varies by cable type and length. Consult manufacturer data.
The transceiver is not acceptable as a stand-alone unit for use in the hazardous locations described above. It must either be mounted within another piece of equipment which is certified for hazardous locations, or installed within guidelines, or conditions of approval, as set forth by the approving agencies. These conditions of approval are as follows: 1. The transceiver must be mounted within a separate enclosure which is suitable for the intended application. 2.
Manual Revision and Accuracy While every reasonable effort has been made to ensure the accuracy of this manual, product improvements may result in minor differences between the manual and the product shipped to you. If you have additional questions or need an exact specification for a product, please contact our Customer Service Team using the information at the back of this guide. In addition, manual updates can often be found on the GE MDS Web site at www.GEmds.com. 05-3946A01, Rev.
x TransNET OEM Integration Guide 05-3946A01, Rev.
1.0 ABOUT THIS MANUAL This manual is intended to guide technical personnel in the integration of MDS TransNET OEM™ transceivers into existing electronic equipment. The OEM transceiver is designed for use inside Remote Terminal Units (RTUs), Programmable Logic Controllers (PLCs) and other equipment associated with remote data collection, telemetry and control. The manual provides instructions for interface connections, hardware mounting, and programming commands.
2.1 Transceiver Features The OEM transceiver is designed for easy installation and flexibility in a wide range of wireless applications. Listed below are several key features of the transceiver which are described in more detail later in this guide.
Table 1. Data Interface & Power Options (Factory Configurable Only) PAYLOAD DATA DIAGNOSTICS DATA INPUT POWER RS-232/485 RS-232 +6–30 Vdc TTL RS-232 +6–30 Vdc TTL TTL +6–30 Vdc Antenna Connector (J200/J201) The PCB has solder pads for several RF connectors with different footprints but only one RF connector will be installed. Below is a table of connector options available from the factory when the order is placed.
2.5 Spread Spectrum Radios—How Are They Different? The main difference between a traditional (licensed) radio and the MDS TransNET transceiver is that this unit “hops” from channel to channel many times per second using a specific hop pattern applied to all radios in the network. A distinct hopping pattern is provided for each of the 65,000 available network addresses, thus minimizing the chance of interference with other spread spectrum systems.
Point-to-Point System A point-to-point configuration (Figure 3) is a simple arrangement consisting of just two radios—a master and a remote. This provides a half-duplex communications link for the transfer of data between two locations. Invisibleplaceholder Master Site Remote Site DATA TRANSCEIVER DATA TRANSCEIVER Host System Figure 3.
Store-and-Forward Repeater Similar to a Tail-End Link, Store-and-Forward (SAF) offers a way to physically extend the range of a network, but in a simplified and economical manner. SAF operates by storing up the data received from one site, and then retransmitting it a short time later. Figure 5 shows a typical SAF repeater arrangement. SAF operates by dividing a network into a vertical hierarchy of two or more sub-networks.
Table 3. OEM Transceiver Accessories (Continued) 2400 MHz Antennas Rugged directional antennas suited for use at Remote stations. Various; Consult factory 900 MHz Bandpass Filter Antenna system filter to aid in eliminating interference from paging system transmissions. 20-2822A02 TNC-to-N Adapter Cable (3 ft./1 meter) Coaxial cable used to connect the radio’s TNC antenna connector to a Type-N style commonly used on large-diameter coaxial cables. 97-1677A159 TNC-to-N Adapter Cable (6 ft.
3.1 Initial Power-Up & Configuration When all of the cable connections described in “Cable Connections for Benchtop Testing” on Page 75 have been made, the transceiver is ready for initial power-up. Operation begins as soon as power is applied, and there are no manual adjustments or settings required. To place the transceiver into operation: 1. Ensure that all cable connections are properly wired and secure.
c. Set the baud rate/data interface parameters. Default setting is 9600 bps, 8 data bits, no parity, 1 stop bit. If changes are required, use the BAUD xxxxx abc command where xxxxx denotes the data speed (300–115200 bps) and abc denotes the communication parameters as follows: a = Data bits (7 or 8) b = Parity (N for None, O for Odd, E for Even c = Stop bits (1 or 2) NOTE: 7N1, 8E2 and 8O2 are invalid interface parameters for this transceiver.
Any device on the left that requires a keyline, as in this illustration, will require the bottom line (CTS to RTS) and the TransNET OEM on the right will need its DEVICE type set to CTS KEY. See DEVICE, on Page 44 for details. 3.3 Configuring a Network for Extensions The installation and configuration of an Extension transceiver is straightforward with only a few unique parameters that need to be considered and set at each unit. In every network there can be only one Master station.
• Remote radio(s) transmitting data (TXD) and receiving data (RXD) with another station. Table 4. LED Indicator Descriptions LED Name Description RXD (CR3) Receive Data Serial receive data activity. Payload data from connected device. RXD TXD (CR4) Transmit Data Serial transmit data activity. Payload data to connected device.
Figure 8 on Page 12 provides details for the locations of the RF and interface connectors. 3.45˝ (87.5 mm) 1.81˝ (46 mm) p To w Vie 1.49˝ (3.8 cm) 3.11˝ (7.9 cm) Side View 0.63” (16 mm) Figure 7. Transceiver Mounting Dimensions 3.45 3.10 \U+2205.150 TYP. .55 1.825 .50 1.475 J200 J3 .225 .25 .185 Figure 8. RF and Interface Connectors Locations RF connector shown in J200 location 12 TransNET OEM Integration Guide 05-3946A01, Rev.
4.1 Antenna & Feedline Selection Antennas The equipment can be used with a number of antennas. The exact style used depends on the physical size and layout of a system. Contact your factory representative for specific recommendations on antenna types and hardware sources. In general, an omnidirectional antenna (Figure 9) is used at the Master station site in an MAS system. This provides equal coverage to all of the Remote sites. NOTE: Antenna polarization is important.
Invisibleplaceholder Figure 10. Typical Yagi Antenna mounted to a mast Feedlines The choice of feedline used with the antenna should be carefully considered. Poor-quality coaxial cables should be avoided, as they will degrade system performance for both transmission and reception. The cable should be kept as short as possible to minimize signal loss. For cable runs of less than 20 feet (6 meters), or for short range transmission, an inexpensive type such as Type RG-8A/U may be acceptable.
Table 6. Length vs. loss in coaxial cables at 2400 MHz Cable Type 10 Feet (3.05 Meters) 50 Feet (15.24 Meters) 100 Feet (30.48 Meters) 300 Feet (91.44 Meters) LMR-400 0.70 dB 3.50 dB 6.61 dB Unacceptable Loss 1/2 inch HELIAX 0.35 dB 1.73 dB 3.46 dB 17.3 dB 7/8 inch HELIAX 0.20 dB 0.99 dB 1.97 dB 9.85 dB 1-1/4 inch HELIAX 0.15 dB 0.73 dB 1.45 dB 7.
Antenna Aiming For optimal performance, directional antennas must be accurately aimed in the direction of desired transmission. The easiest way to do this is to point the antenna in the approximate direction, then use the Remote radio’s RSSI command (Received Signal Strength Indicator) to further refine the heading for maximum received signal strength. In an MAS system, RSSI readings are only meaningful when initiated from a Remote station.
TotalFlow™ Protocol at 9600 with Sleep Mode For reliable operation with TotalFlow meters, use the default settings for 9600 with the following alterations: HOPTIME 28—Allows large data packets FEC OFF—Improves store-and-forward performance for a large contin- uous data stream BUFF ON—Ensures “ungapped” 4-second polls if unit is in sleep mode Operation at 115200 bps Burst throughput at 115200 bps is supported at all settings. The radio will always buffer at least 500 characters.
6.0 OPERATING PRINCIPLES & SPECIAL CONFIGURATIONS IMPORTANT: The following discussion of setup and commands is generic to TransNET radios and networks. Since it is not known if your network will be made up of only TransNET OEM transceivers, or a mixture of OEM and standard packaged versions, references to the DATA and INTERFACE ports can be used interchangeably. The DIAGNOSTIC port is only available on the standard transceiver and on the Evaluation PCB.
When a primary is specified (XPRI is 0...31), a radio will always attempt to find the primary first. If 30 seconds elapses and the primary is not found, then the radio attempts to synchronize with any non-primary radio in the XMAP list. Once every 30 minutes, if a primary is defined, the radio will check its synchronization source. If the radio is synchronized to a unit other than the primary, then the current RSSI value is compared to the XRSSI value.
6.3 SAF Operation with Extension Radios The Store-and-Forward (SAF) capability operates by dividing a network into a vertical hierarchy of two or more sub-networks. (See Figure 5 on Page 6.) Adjacent sub-networks are connected via Extension radios operating in “MODE X” which move data from one sub-network to the next one. The Store-and-Forward implementation adheres to the general polling principles used in most multiple-address systems (MAS).
Extended SAF Network Below is an example of a multilevel network utilizing two repeaters—XJ,K and XK,L. The example demonstrates the extensibility of the network. In this case, messages directed to Remotes in the sub-network L will be relayed through Extension radios XJ,K and XK,L. Like the previous example, the Extension radios split their operating time equally between their Master and Remote personalities.
SAF Configuration Example The following is an outline for the configuration of a simple store-and-forward link. 1. 2. 3. Mode X and M Radios—Can have direct reports (Mode R radios) outside of the chain. Data (Payload)—Travels from Master to Remote, and back from Remote to Master. Mode X and R Radios—Extension links can be protected by mapping one or more fall-back paths in case of a failure. Add secondary extension addresses (XADDR) into the XMAP table. (See “XMAP [00000000-FFFFFFFF]” on Page 55.
In this mode, the Master’s DATA port is parsed for a subset of AT commands. (See Supported Commands below). When an ATDTxxxxx data sequence is detected, and xxxxx is a unit address of a radio in the network, the TransNET Master will establish a virtual link to that unit. It will remain in that state until either another ATDTxxxxx or ATH (hang-up/disconnect) is detected. (Note: Unaddressed Remotes in the network will not respond to user data.
Modem will echo characters in the data stream but will be ignored until a second “AT” is seen at which time the modem closes the virtual connection. Operating Notes when AT Commands are ON • Radios will not poll with the embedded RTU simulator unless a connection is established. • Network-wide diagnostics are unaffected by the dialed unit connection status. • The use of the TransNET OT command (Output Trigger) can be of benefit in some configurations. See “OT [ON, OFF]” on Page 49 for configuration details.
Table 7. Configuration Parameters for SAF Services Network Master Radio (Continued) Parameter Command Description Extended Address XADDR A number between 0 and 31 that will serve as a common address for radios that synchronize directly to this Master. Typically, the Master is set to zero (0). Details Page 55 Store-and-Forward Mode SAF ON Details Page 52 Enables store-and-forward capability in the network. Table 8.
Table 9. Configuration Parameters for SAF Services Remote Radio(s) Parameter Command Description Operating Mode MODE R Sets the radio to serve as a Remote station. Details Page 48 Network Address ADDR Details Page 40 Primary Extended Address XPRI Extension Map XMAP Details Page 56 Details Page 56 Extension Received Signal Strength Indicator XRSSI Details Page 56 A number between 1 and 65,000 that will serve as a common network address or name.
It is important to note that power consumption will increase somewhat as communication from the Master station degrades. This is because the radio will spend a greater period of time “awake” looking for synchronization messages from the Master radio. In order for the radio to be controlled by Pin 4, the unit’s Sleep Mode must be enabled through the SLEEP [ON, OFF] command. See “SLEEP [ON, OFF]” on Page 54 for more information.
Reading RSSI & Other Parameters with LPM Enabled It may be desired to perform tests and review operational settings of a Remote radio which has been programmed to operate in the low-power mode. Follow the abbreviated procedure below to interact with the radio through a local computer. • Disconnect the Remote’s antenna to force it to lose sync with the Master • Power-down the radio • Connect a computer running TransNET configuration software to the Remote’s DIAG(nostic) port.
6.8 Low-Power Mode versus Remote’s Sleep Mode The Low-Power Mode (LPM) puts Remote radios into an operational configuration similar to Sleep, but there are some important differences. Below is a comparison of the two modes. Table 11.
Operational Influences—Hoptime and SAF The synchronization period is influenced by two parameters’ values—HOPTIME and SAF (Store-and-Forward). Table 12 shows several configurations and the associated synchronization period value. Table 12. Synchronization Period versus Hoptime and SAF Settings Sync Period Hoptime Value SAF 441 ms 7 OFF 1.8 sec 28 OFF 3.5 sec 28 ON 6.
in order to reduce the interference to the point where overload of one network by the other will not occur. The CSADDR command will provide relief from this antenna separation requirement by operating the networks in a TDD mode and ensuring that one Master cannot transmit while the other (or multiple others) are trying to receive a signal from a distant radio.
Invisibleplaceholder Omnidirectional Antenna Network “A” Master—Network “A” CS Master TransNET XCVR Network “B” Power Divider RF (– 3 dB) Master—Network “B” CS Slave RF Data User I/O Interface TransNET XCVR Data User I/O Interface Figure 15. Co-Located Masters Sharing an Antenna 7.0 DEALING WITH INTERFERENCE The radio shares the frequency spectrum with other services and other Part 15 (unlicensed) devices in the USA, Canada, and certain other countries.
4. Multiple transceiver systems can co-exist in proximity to each other with only very minor interference as long as they are each assigned a unique network address. Each network address has a different hop pattern. Additional RF isolation can be achieved by using separate directional antennas with as much vertical or horizontal separation as is practical. Vertical separation of antennas is more effective per foot/meter than horizontal. 5.
Once connected, communication (baud rate) is established through the command interface. To access the command interface, press the ESC key, followed by one or more ENTER keystrokes (delivered at about half-second intervals), until the “>” prompt is displayed. NOTE: The DIAG port (RJ-11 connector) uses 8 data bits, 1 stop bit, and no parity. It can automatically configure itself to function at 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200 bps.
Table 13. Network Configuration—Master Station COMMAND DESCRIPTION AT [ON, OFF] Details Page 41 Enables Master station to emulate a modem and respond to AT commands BUFF [ON, OFF] Details Page 42 ON = Seamless data OFF = Fast byte throughput. FEC [ON, OFF] Details Page 45 Sets/disables FEC (Forward Error Correction) setting. HOPTIME [7, 28] Details Page 45 Displays hop-time or sets it to 7 or 28 ms.
Table 15. Operational Configuration—Set/Program Command Description ADDR [1–65000] Details, page 40 Program network address AMASK [0000 0000–FFFF FFFF] Details, page 41 Alarm response ASENSE [HI/LO] Details, page 41 Sense of the alarm output on Pin 6 of the INTERFACE connector in the EIA-232 mode. Default: Alarm present = HI BAND [A, B, C] Details Page 42 Selects one of three operating bands. (2.
Table 15. Operational Configuration—Set/Program (Continued) Command Description RXTOT [NONE, 0–1440] Details, page 51 Maximum duration (in minutes) before time-out alarm. Default is OFF. RTU [ON, OFF, 0-80] Details, page 51 Enable or Disable unit’s built-in RTU simulator. Default is OFF. Set RTU address between zero and 80. SLEEP [ON, OFF] Details, page 54 Enable or Disable the radio’s energy-conservation Sleep mode function.
Table 16. Operating Status—Display Only (Continued) Command Description CTS Details Page 43 CTS delay in milliseconds (0–255 ms) CTSHOLD Details Page 43 “Hold time” that CTS is present following last character from DATA port. DEVICE Details Page 44 Device behavior HOPTIME Details Page 45 Hop-time value in milliseconds (ms). LPMHOLD Details Page 48 Time (0-1000 ms) provided to give an RTU time to respond before the radio goes to sleep.
Table 16. Operating Status—Display Only (Continued) Command Description RXTOT Details Page 51 The amount of time (in seconds) to wait before issuing a time-out alarm. SAF Details Page 52 Store-and-forward mode status in this unit. (ON/OFF) SER Details Page 52 Serial number of radio SHOW CON Details Page 52 Display virtual modem connection status SHOW PWR Details Page 53 RF output power. Measured RF power in dBm.
Table 17. Diagnostic and Test Functions Command Description KEY Details Page 47 Enables the transmitter test. (Must be in Setup mode. Details on page 52.) DKEY Details Page 44 Turns off the transmitter test. (Must be in Setup mode. Details on page 52.) TX [xxxx] Details Page 55 Set/display transmit test frequency. (Must be in Setup mode. Details on page 52.) RX [xxxx] Details Page 51 Set/display receive test frequency. (Must be in Setup mode. Details on page 52.
AMASK [0000 0000–FFFF FFFF] Alarm Mask This command sets the alarm bits that cause the alarm output signal to be triggered. The PWR LED still flashes for all alarms, but the alarm output signal is only activated for those alarms having the corresponding mask bit set. The hex value for the mask aligns directly with the hex value for the ALARM command. The default is FFFF FFFF. Through proper use of the AMASK command, it is possible to tailor the alarm response of the radio.
BAND [A, B, C] Select Sub-Band (Normally used for 2.4 GHz model) This command sets or displays the receiving and transmit operating band for the radio. A = 2.4016–2.4270 GHz B = 2.4272–2.4526 GHz C = 2.4528–2.478.2 GHz NOTE: The same BAND setting must be common across each radio in a given network and it must be programmed at the time of installation. BUFF [ON, OFF] Data Buffer Mode This command sets or displays the received data handling mode of the radio. The command parameter is either ON or OFF.
The CODE command takes an argument of 1…255, or NONE. Entering CODE without an argument will display either NONE or ACTIVE. ACTIVE means that security/encryption has been enabled, but the radio will not display the security argument. When a CODE value is active, all radios in the system must use the same code value. If the code value is not properly programmed, a Remote radio will not synchronize with the Master. CAUTION: Record the CODE value and store it in a safe place.
DEVICE [DCE, CTS KEY] Radio-MODEM Behavior The DEVICE command sets or displays the device behavior of the radio. The command parameter is either DCE or CTS KEY. The default selection is DCE. In this mode, CTS will go high following RTS, subject to the CTS programmable delay time. Keying is stimulated by the input of characters at the data port. Hardware flow control is implemented by dropping the CTS line if data arrives faster than it can be transmitted.
DTYPE [NODE/ROOT] Network Diagnostics Mode The DTYPE command specifies the radio’s operational characteristics for network-wide diagnostics. The transceiver uses the following types: • NODE—The most common setting, and the default. This is the basic system radio device-type. Typically, the radio network is comprised of nodes and one root. Intrusive diagnostics can originate from any node. However, non-intrusive diagnostics can only be conducted from the root node.
NOTE: Caution should be exercised when using the INIT command on radios in a system employing the Store-and-Forward feature. Settings relating to the use of Extension services will be lost and will need to be re-entered. Record the settings for XADDR, XPRI and XMAP before using the INIT command. SPECIAL NOTE: Installing firmware of Revision 3.0 or later into a radio with Revisions 1.x firmware will preserve the radio’s compatibility with other radios running Revision 1.x firmware.
Table 18. INIT Command Generated Defaults (Continued) Parameter Default Setting Corresponding Command Buffer Mode OFF BUFF OFF Forward Error Correction ON FEC ON Hop-Time 7 ms HOPTIME 7 Low-Power Mode 0 (Off) LPM Skipped Frequencies None (radio will hop across all frequencies) SKIP NONE Retry Count 10 (max. of 10 repeats for ARQ) RETRY 10 Repeat Count 3 (downstream repeats) REPEAT 3 HREV Hardware Revision Shows the hardware revision of the radio.
• LPM 0 at the Master to disable low-power mode (Default setting). The SLEEP command must be enabled for LPM to function. Further, when you enable LPM, the LEDs on the Remote radio dim even though the LPM function is not properly enabled by turning on SLEEP. For more information, see “Low-Power Mode (LPM)—Master Enabled” on Page 27, and “Low-Power Mode versus Remote’s Sleep Mode” on Page 29.
• if OT = ON, DEVICE = DCE, and RXD = 0, data delay is 1 second or until RTS • if DEVICE = DCE, and RXD = N, data delay is N ms • if DEVICE = CTS KEY, and CTS = N, data delay is N ms or until RTS • if DEVICE = CTS KEY overrides RXD, RXD overrides OT default. OWM [xxxxx] “Owner’s Message” The OWM command sets or displays an optional owner’s message, such as the system name. The entry can contain up to 30 characters.
REPEAT [0–10] Downstream Repeat Transmission Count The REPEAT command affects “downstream” data. The command causes a Master or Extension to always repeat transmissions for the specified number of times (range is 0 to 10; default selection is 3). Unlike the RETRY command, there is no acknowledgment that a message has been received. Use the REPEAT command without a value to display the current setting. RETRY [0–10] Upstream Repeat Transmission Count The RETRY command affects upstream data.
RTU [ON, OFF, 0-80] Remote Terminal Unit Simulator This command re-enables or disables the radio’s internal RTU simulator, which runs with factory-proprietary polling programs (poll.exe and rsim.exe). The internal RTU simulator is available whenever a radio has diagnostics enabled. This command also sets the RTU address to which the radio will respond. The internal RTU can be used for testing system payload data or pseudo bit error rate (BER) testing.
• Synthesizer frequencies are reset to the test frequencies specified by the TX and RX commands described earlier. • The radio can be keyed using the KEY command. DKEY is used to unkey the radio. (If the radio is left in a keyed state it is automatically unkeyed after 10 minutes.) • The RSSI is sampled in a raw, continuous fashion regardless of whether the unit is a Master or a Remote. Entering Q or QUIT returns the system to normal operation.
SKIP [NONE, 1...8] Skip Radio Operating Zones This command sets or displays which, if any, of the eight zones will be skipped from the radio’s hopping sequence. Skipping zones is one way of dealing with constant interference on one or more frequencies in the radio’s operating band. See “DEALING WITH INTERFERENCE” on Page 32 for more information on dealing with interference. Tables 19, 20, 21 and 22 show the frequency range covered by each zone.
SLEEP [ON, OFF] Transceiver Sleep—Remotes Only This command is used to set or display the radio’s Sleep Mode setting. The default setting is SLEEP OFF. When this setting is ON (enabled) the Low-Power, or RTU-forced Sleep Mode, can be used. This function cannot be turned on for a Master or Extension radio unless the unit is in the Low-Power Mode. See “Using the Radio’s Sleep Mode (Remote Units Only)” on Page 26 and “Low-Power Mode versus Remote’s Sleep Mode” on Page 29 for more information.
UNIT [10000–65000] Unit Address This command sets the unit addressing for network-wide diagnostics and AT-Command address. The unit address is factory programmed to the last four digits of the radio’s serial number. If re-programmed in the field, the entry must consist of five digits between 10000 and 65000. XADDR [0–31] Extended Address Used to display or program the Extended Address of this radio that will serve as a common address for the sub-network synchronized to this Master or Extension.
ZONE DATA Read Zone Statistics Log The transceiver divides its frequency operating spectrum into eight 3.0 MHz-wide zones or sub-bands. (These are the same zones referenced by the SKIP command described earlier.) Data frame statistics are maintained for each zone to indicate the transmission quality of data through the network. This information is useful for identifying zones where significant interference exists.
• Proper programming of the radio’s operating parameters, especially Operating Mode (MODE), Network Address (ADDR), and interface Baud Rate (BAUD). For TransNET 2400 check the sub-band (BAND). • The correct interface between the radio and the connected data equipment (proper cable wiring, data format and timing). • In store-and-forward systems there are several areas that should be checked or evaluated: • Look for duplicate XADDR values on MODE M and MODE X radios.
Alarm Codes’ Definitions Table 23 contains a listing of all alarm codes that may be reported by the transceiver. Additional alarm codes may be used in future firmware releases or are used by the factory. Table 23. Alarm Codes Descriptions Alarm Code Alarm Type Description 00 Major The network address is not programmed. 01 Major Improper firmware detected for this radio model. 04 Major One or more of the programmable synthesizer loops is reporting an out-of-lock condition.
9.2 LED Indicators The LED indicators on the transceiver board (CR3, CR-4, CR-5 and CR-6) are an important troubleshooting tool and should be checked whenever a problem is suspected. Table 24 describes the function of each status LED. Table 24. LED indicator descriptions LED Name Description RXD (CR3) Receive Data Serial receive data activity. Payload data from connected device. RXD TXD (CR4) Transmit Data Serial transmit data activity. Payload data to connected device.
9.3 Troubleshooting Chart Table 25 provides suggestions for resolving system difficulties that may be experienced in the radio system. If problems persist, contact the factory for further assistance. Refer to the inside back cover of this guide for contact information. Table 25. Troubleshooting Guide Difficulty Recommended System Checks Unit is inoperative. a. Check for the proper supply voltage at the power connector. Interference is suspected. b. The transceiver’s internal fuse may have opened. a.
9.4 Performing Network-Wide Remote Diagnostics Diagnostics data from a Remote radio can be obtained by connecting a laptop or personal computer running MDS InSite diagnostics software (Version 6.6 or later) to any radio in the network. NOTE: The diagnostics feature may not be available in all radios. The ability to query and configure a radio via Network-wide Diagnostics is based on the feature options purchased in the radio being polled.
10.1 Obtaining New Firmware The latest firmware for each radio type may be obtained free from our Web site at: www.GEmds.com Registration may be required to access some downloadable files. Firmware is also available on disks from the factory that are bundled with an installation utility (MDS Radio Software Upgrade (upgrade.exe) for transferring the firmware file on the disk to the radio. Saving a Web-Site Firmware File Onto Your PC Firmware upgrades are distributed as a plain-text (ASCII) file with a “.
2) A unique Network Address—This provides a unique identifier for each radio in a network. A radio is not addressable unless this unique code is included in the data string. 3) An optional encryption value (code)—Setting an encryption code requires the use of the CODE command. This command scrambles the radio’s hop pattern and encrypts payload data content. A radio requires the correct Network Address (ADDR) and CODE value in order to synchronize.
DATA CHARACTERISTICS Data Interface: Interface Connector: Data Rate: Data Latency: Byte Length: Maximum Data Transmission: RS-232/422/485 16-pin header, female 300, 600,1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps asynchronous 7 ms (typical) 10 or 11 bits Continuous up to 115200 bps RF CHARACTERISTICS TRANSMITTER: Power Output (at antenna connector): Duty Cycle: Modulation Type: Output Impedance: Spurious: RECEIVER: Type: Sensitivity: Intermodulation: Desensitization: Spurious: Bandwid
Temperature Range: Humidity: Primary Power: Current Draw (typical): Transmit: Receive: Sleep Mode: Physical Dimensions: Agency Approvals: –40° C to +70° C <95% at +40° C; non-condensing 13.8 Vdc (6–30 Vdc range) 510 mA @ 13.8 Vdc <115 mA @ 13.8 Vdc ð 3 mA @ 13.8 Vdc 1.81˝ W x 3.45˝ L x 0.63˝ H (46 x 87.5 x 16 mm) • FCC Part 15.
Time Required to Synchronize with Master Radio: 0.5 seconds (typical) 12.3 Transceiver Module’s Interface Connector, J3, Detailed Pin Descriptions The tables in this section give detailed pin functions for the transceiver’s 16-pin header connector, J3 (see Figure 16). The tables are organized according to the available signaling configurations of the OEM transceiver.
Table 27. Transceiver Connector J3 Pinouts Payload data TTL; Diagnostic data TTL (Continued) 6 IN TTL, 3 Vdc Sleep Mode Input—A ground on this pin turns off most circuits in a remote radio. This allows for greatly reduced power consumption, yet preserves the radio’s ability to be brought quickly back on line. See “Using the Radio’s Sleep Mode (Remote Units Only)” on Page 26 for details. 7 OUT TTL, 3 Vdc Data Carrier Detect (DCD)—A low indicates hopping synchronization has been achieved.
Table 28. Transceiver Connector J3 Pinouts (Payload data TTL; Diagnostic data RS-232) (Continued) 5 IN — DC Input (6–30 Vdc)— Supply Source must be capable of furnishing at least 7.5 watts. 6 IN TTL, 3 Vdc Sleep Mode Input—A ground on this pin turns off most circuits in a remote radio. This allows for greatly reduced power consumption, yet preserves the radio’s ability to be brought quickly back on line. See “Using the Radio’s Sleep Mode (Remote Units Only)” on Page 26 for details.
Table 29. Transceiver Connector J3 Pinouts Payload data RS-232; Diagnostic data RS-232 (Continued) 4 IN RS-232 Diagnostic RXD—Accepts diagnostic/administrative data from the connected device. 5 IN — DC Input (6–30 Vdc)— Supply Source must be capable of furnishing at least 7.5 watts. 6 IN TTL, 3 Vdc Sleep Mode Input—A ground on this pin turns off most circuits in a remote radio. This allows for greatly reduced power consumption, yet preserves the radio’s ability to be brought quickly back on line.
Table 30. Transceiver Connector J3 Pinouts Payload data RS-485; Diagnostic data RS-232 Pin No. Input/ Output Signal Type 1 IN — 2 OUT RS-232 3 OUT TTL, 3 Vdc Alarm condition—A low indicates normal operation. A high indicates an alarm. (See ASENSE [HI/LO] command for more information.) 4 IN RS-232 Diagnostic RXD—Accepts diagnostic/administrative data from the connected device. 5 IN — DC Input (6–30 Vdc)— Supply Source must be capable of furnishing at least 7.5 watts.
12.4 User Configurable I/O Connections Several connection points (eyelets) are provided within the transceiver near the INTERFACE connector (J3) that allow the user to facilitate unique integration requirements. By jumpering eyelets, external functions (unconditioned I/O) may be communicated within the TransNET network using a Network Management System (NMS) such as InSite or a user’s custom application that uses the Network-Wide Diagnostics Protocol.
Table 31. TransNET User I/O Connection Resources Function or Service Range Available at eyelet: Filtered Receive Audio (For test purposes) 0 – 5 Vac, 30–5 kHz H2 General Purpose I/O 1 (GPIO 1)a TTL; External 10K to 3.3 V Vcc Recommended H3 General Purpose I/O 2 (GPIO 2)b TTL; External 10K to 3.3 V Vcc Recommended H4 Analog 1c 0 – 5 Vac, ð 60 HZ H6 Do not connect. Factory use only.
13.0 EVALUATION DEVELOPMENT KIT (P/N 03-4053A01) The Evaluation Development Kit is designed to assist integrators who will be working with the transceiver in a benchtop setting.
STANDOFF SPACERS (4) TRANSCEIVER INTERFACE (16-PIN HEADER) JUMPER BLOCK J1 TEST PROBE POINTS DC POWER (5–25 VDC) DIAGNOSTIC COMMUNICATIONS (RJ-11) DATA CONNECTOR (DB-9) Figure 18. OEM Evaluation Board (P/N 03-4051A01) For detailed information on the transceiver module’s Interface connector, J3, review the series of tables beginning on Page 66.
13.1 Cable Connections for Benchtop Testing There are four basic requirements for operating the transceiver and evaluation board in a benchtop test environment. They are: • Adequate and stable primary power • A proper antenna system or RF load (50 Ohms) • The correct interface wiring between the transceiver and the connected DTE device (RTU, PLC, etc.) • A connected PC terminal to read/set transceiver parameters. Figure 20 shows a typical setup for bench testing an OEM Transceiver.
CAUTION POSSIBLE EQUIPMENT DAMAGE Do not apply DC power to the transceiver without first attaching a proper RF load, or the transceiver may be damaged. DC Power Connector, J3 This connector accepts operating power for the transceiver. A wall-style AC adapter (Part No. 01-3862A02) is recommended for this service. DC connection is made with a 2-pin polarized plug, GE MDS Part No. 73-1194A39. Be sure to observe proper polarity. The left terminal is positive (+) and the right is negative (–).
Invisibleplaceholder RJ-11 PLUG (TO TRANSCEIVER) 1 6 RJ-11 PIN LAYOUT DB-9 FEMALE (TO COMPUTER) 4 TXD RXD 2 5 RXD TXD 3 6 GND GND 5 Figure 22. RJ-11 to DB-9 Diagnostic Cable—Wiring Details (A pre-constructed cable is also available, Part No. 03-3246A01) Diagnostic Communication Modes Two methods may be used to communicate with the radio’s diagnostic port: • Terminal Interface—The PC is used in its basic terminal emulation mode, (i.e.
NOTE: Radio modules equipped with a payload TTL interface are presented as RS-232 mode from the Evaluation Board. 5 1 9 6 Figure 23. DATA Connector (DB-9F), J5 As viewed from outside the device Table 32 lists the DATA connector pin functions for an RS/EIA-232 signaling interface. NOTE: The radio is hard-wired as a DCE in the EIA-232 mode. Table 32.
Invisibleplaceholder H14 / J5-9 H13 / J5-4 H11 / J5-1 H12 / J5-6 J5 Figure 24. Evaluation PCB’s DATA Interface, J5, Unterminated Pins Eyelets PCBs 03-4051A01, Rev. B and later Transceiver Power Interface, J1 Terminal block, J1, on the Evaluation PCB, provides direct access to the two power lines feeding the transceiver module—unregulated primary power (6–30 Vdc) and regulated 3.3 Vdc. These jumpers and nearby eyelets can be used for two functions: 1.
13.2 Evaluation PCB Documentation This section contains an assembly drawing and parts list for the OEM Evaluation Board. In addition, a separate foldout schematic of the Board is included at the back of this manual. Board documentation is provided to assist integrators who need to create compatible interface circuitry between the OEM transceiver and host equipment.
Table 33. OEM Evaluation Board Parts List (Continued) U3 IC, IN'FCE 20PIN TSSOP DRIVER SP3222 U2 IC, SWITCHING REG'R ADJ.4.5A LT1374HVIR K1 K2 K3 RELAY, DPDT R10 RESISTOR, CHIP 0603 1/16W 5% 2.2K R4 R5 R13 R14 RESISTOR, CHIP 0603 1/10W 1% 10K R12 RESISTOR, CHIP O603 1/10W 1% 100K R7 R9 RESISTOR, CHIP 0603 1/10W 1% 1.5K R11 RESISTOR, CHIP O603 1/10W 1% 1.82K R3 RESISTOR, CHIP 0603 1/10W 1% 22.6K R15 RESISTOR, CHIP O603 1/10W 1% 31.
Evaluation PCB Interface to Transceiver PCB, J2 Table 34, lists the signal and power lines passed between the Evaluation PCB and the transceiver module. Only a few functions are passed through to the Evaluation PCB’s DATA interface connector, J5. However, many of the pins of J2 are available through eyelets near the connector as seen in Figure 26 on Page 80. Table 34. Transceiver Interface, J2 (16-Pin Header Connector on Evaluation PCB) Pin No.
1. Disconnect the primary power cable and all other connections to the Evaluation Board. 2. Locate the fuse holder assembly, FH1, behind the green power connector, J3. 3. Loosen the fuse from the holder using a very small screwdriver, then use a small pair of needle-nose pliers to pull the fuse straight up and out of the holder. 4. Use an ohmmeter or other continuity tester to verify that the fuse is open. 5. Install a new fuse in the holder.
14.0 dBm-Watts-Volts CONVERSION CHART Table 35 is provided as a convenience for determining the equivalent voltage or wattage of an RF power expressed in dBm with 50 Ohms load. Table 35. dBm-Watts-Volts Conversion Chart dBm V Po dBm V Po dBm mV +53 +50 +49 +48 +47 +46 +45 +44 +43 +42 +41 +40 +39 +38 +37 +36 +35 +34 +33 +32 +31 +30 +29 +28 +27 +26 +25 +24 +23 +22 +21 +20 +19 +18 +17 +16 +15 +14 +13 +12 +11 +10 +9 +8 +7 +6 +5 +4 +3 +2 +1 100.0 70.7 64.0 58.0 50.0 44.5 40.0 32.5 32.0 28.0 26.2 22.
05-3946A01, Rev.
86 TransNET OEM Integration Guide 05-3946A01, Rev.
GLOSSARY Antenna System Gain—A figure, normally expressed in dB, representing the power increase resulting from the use of a gain-type antenna. System losses (from the feedline and coaxial connectors, for example) are subtracted from this figure to calculate the total antenna system gain. ARQ—Automatic Repeat Request. An error-correction technique whereby flawed data packets are detected and a request for re-transmission is issued. Bit—The smallest unit of digital data, often represented by a one or a zero.
DTE—Data Terminal Equipment. A device that provides data in the form of digital signals at its output. Connects to the DCE device. Equalization—The process of reducing the effects of amplitude, frequency or phase distortion with compensating networks. Extended Address—A user-selectable number between 0 and 31 that identifies a group of transceivers that are part of a common sub-network. It is recommended the Master be assigned XADDR 0 and the values of 1-31 assigned to Extension radios.
Master (Station)—The one radio transceiver in a spread spectrum network that automatically provides synchronization information to one or more associated remote transceivers. A radio may be programmed for either master or remote mode using software commands. Multiple Address System (MAS)—See Point-Multipoint System. Network Address—User-selectable number between 1 and 65000 that is used to identify a group of transceivers that form a communications network.
TTL—Transistor-Transistor Logic. A form of digital switching that utilizes bipolar transistors to sense “high” and “low” logic levels (1 and 0, respectively). Transmission Latency—Time required to send a single packet of data to the receiving end of the circuit. This value will depend on the baud rate and number of bytes in the sequence. Zone—See Frequency Zone. G-4 TransNET OEM Integration Guide 05-3946A01, Rev.
INDEX A Accessories (table) 6 ADDR command (set/display radio network address) 41 Alarm checking for 58 code definitions 59 codes 58 codes, table 59 major vs.
LPM (low-power mode) 48 LPMHOLD (low-power mode sleep time) 49 MODE (display/set radio mode as master, remote, or extension) 49 MODE (radio operating mode) 49 most often used commands 41 network configuration 36 OWM (set/display optional owner’s message) 50 OWN (set/display optional owner’s name) 50 PORT (display/set current data port) 50 PWR (set/display RF forward output power) 50 Radio transmitter test frequency (TX) 56 RSSI (display received signal strength) 51 RTU (enable/disable internal RTU) 52 RX (s
command) 46 network address (ADDR command) 41 operating status commands 37 owner’s message (OWM command) 50 owner’s name (OWN command) 50 receive test frequency (RX command) 52 received data handling mode (BUFF command) 43 received data timeout value (RXTOT command) 52 received signal strength (RSSI command) 51 RF forward output power (PWR command) 50 RF power output, actual measured (SHOW command) 54 skipped frequency zones (SKIP command) 54 temperature, internal (TEMP command) 56 display/set radio mode as
performance optimization 15 tail-end links 9, 20 Interference about 33 checks 17 troubleshooting 61 interference 33 K Key set to CTS keying (DEVICE command) 45 transmitter, for antenna SWR check 16 KEY command (key transmitter) 16, 53 L LED status indicators table 11, 60 Low-Power Mode (LPM) Command 48 Low-Power Mode Sleep Time (LPMHOLD) Command 49 LPM Command (low-power mode) 48 LPMHOLD Command 49 M Map 56 Map of Extension Addressses (XMAP) 56 Master Station default settings 47 MIRRORED BITS™ Protocol Supp
antenna and feedline selection 13 antenna SWR check 16 connecting data equipment to DATA INTERFACE connector 34 connecting PC and radios for network-wide diagnostics 62 enabling sleep mode installation 11–15 interference check 17 mounting the transceiver 11–12 network-wide diagnostics 62 performance optimization 15 performing network-wide diagnostics 62 programming radio for network-wide diagnostics 62 troubleshooting 58–61 Programming radio 41–57 as root or node 62 PWR command (set/display RF forward outpu
command) 43 received data timeout value (RXTOT command) 52 receiver test frequency (RX command) 52 testing mode (SETUP command) 53 SETUP command (enter testing and setup mode) 53 Setup Radio Test (SETUP) 53 Show Clock-Synchronization Master Network Address (SHOW SYNC) 54 SHOW command (display power output) 54 SHOW CON Command (show virtual connection status) 53 Show Measured RF Transmit Power (SHOW PWR) 54 SHOW SYNC Command 54 Show Virtual Connection Status Command (SHOW CON) 53 SKIP command (set/display fr
IN CASE OF DIFFICULTY... GE MDS products are designed for long life and trouble-free operation. However, this equipment, as with all electronic equipment, may have an occasional component failure. The following information will assist you in the event that servicing becomes necessary. CUSTOMER ASSISTANCE Assistance for GE MDS products is available from our Customer Support Team during business hours (8:00 A.M.–5:30 P.M. Eastern Time).
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