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MDS TransNET 2400, Руководство по установке и эксплуатации

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2

MDS TransNET I&O Guide 

MDS 05-2708A01, Rev.  D 

• 65,000 available network addresses

• Network-wide configuration from the Master station eliminates most 

trips to Remote sites

• Data transparency ensures compatibility with virtually all asynchronous 

SCADA system RTUs

• Peak-hold RSSI averaged over eight hop cycles

• Operation at up to 115,200 bps continuous data flow

• Store-and-Forward repeater operation

• Data latency typically less than 10 ms

• Same hardware for Master or Remote configuration

• Supports RS/EIA-232 and RS/EIA-485 user interface

• Low current consumption; typically less than 3 mA in “sleep” mode

NOTE: 

Some radio features may not be available on all models, or limited by the options 
purchased, or the applicable regulatory constraints for the region in which the 
radio will operate.

2.2 Model Number Codes

The radio model number is printed on the label on the end of the radio’s enclo-
sure. It provides key information about how the radio was configured when it 
was shipped from the factory. This number is subject to many variations 
depending on what options are installed and where (country) the product is 
used. Contact MDS is you have questions on the meaning of the code.

2.3 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 avail-
able network addresses, thereby minimizing the chance of interference with 
other spread spectrum systems. In the USA, and some other countries, no 
license is required to install and operate this type of radio system, provided 
that RF power and antenna gain restrictions are observed.

2.4 Typical Applications

Multiple Address Systems (MAS)

This is the most common application of the transceiver. It consists of a central 
control station (Master) and two or more associated Remote units, as shown 
in 

Figure 2

. An MAS network provides communications between a central 

host computer and remote terminal units (RTUs) or other data collection 

Содержание TransNET 2400

Страница 1: ...Installation Operation Guide Installation Operation Guide MDS 05 2708A01 Rev D AUGUST 2006 Microwave Data Systems Inc MDS TransNET 900 MDS TransNET 2400 Spread Spectrum Data Transceiver ...

Страница 2: ...1 65000 using ADDR command Each radio in the system must have the same network address Tip Use the last four digits of the Master s serial number to help avoid conflicts with other users 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 equals the data rate 300 115200 bps and a...

Страница 3: ... a TransNET Network with a Repeater 4 2 5 Accessories 5 3 0 INSTALLATION PLANNING 6 3 1 General Requirements 6 3 2 Site Selection 6 Terrain and Signal Strength 7 Conducting a Site Survey 7 3 3 A Word About Radio Interference 8 3 4 Antenna Feedline Selection 9 Antennas 9 Feedlines 10 Antenna System Ground 11 3 5 How Much Output Power Can be Used 12 4 0 INSTALLATION 14 4 1 Transceiver Installation 1...

Страница 4: ...22 Terminal Interface 22 PC Based Configuration Tool 22 6 2 User Commands 23 Entering Commands 23 6 3 Detailed Command Descriptions 28 ADDR 1 65000 29 Network Address AMASK 0000 0000 FFFF FFFF 29 Alarm Mask AT ON OFF 29 Hayes Compatible AT Command Support ASENSE HI LO 29 Alarm Output Sense BAUD xxxxx abc 29 Data Interface Port Baud Rate BAND A B C 30 Select Sub Band Normally used for 2 4 GHz model...

Страница 5: ...OFF 33 Forward Error Correction HOPTIME 7 14 28 34 Radio Transmitter Hop Timing INIT 34 Initialize Restore to Factory Defaults HREV 35 Hardware Revision KEY 35 Turn On Radio Transmitter Test Signal LED ON OFF 36 Enable Disable PCB LEDs LPM 1 0 36 Low Power Mode Masters Only LPMHOLD 0 1000 36 Low Power Mode Sleep Time MODE M R X 36 Radio Operating Mode MRSSI NONE 40 90 37 Minimum RSSI for Mobile Op...

Страница 6: ...e Terminal Unit Simulator RX xxxx 39 Radio Receive Test Frequency RXD 0 235 ON OFF 39 RXD Delay RXTOT NONE 0 1440 40 Receive Data Timeout Timer SAF ON OFF 40 Store and Forward Services Support SETUP 40 Setup Radio Test SER 40 Radio Serial Number SHOW CON 41 Show Virtual Connection Status SHOW PWR 41 Show Measured RF Transmit Power SHOW SYNC 41 Show Clock Synchronization Master Network Address SKIP...

Страница 7: ...E CLEAR 44 Clear Zone Statistics Log ZONE DATA 44 Read Zone Statistics Log 7 0 TROUBLESHOOTING 45 7 1 LED Indicators 46 7 2 Alarm Codes 46 Checking for Alarms STAT command 46 Major Alarms versus Minor Alarms 46 Alarm Code Definitions 47 7 3 Troubleshooting Chart 48 7 4 Performing Network Wide Remote Diagnostics 49 7 5 Internal Fuse Replacement 50 8 0 RADIO FIRMWARE UPGRADES 51 8 1 Obtaining New Fi...

Страница 8: ...nce by HOPTIME and SAF Settings 61 9 7 Low Power Mode versus Remote s Sleep Mode 62 9 8 Mobile Operation Support 62 Introduction 62 Operational Influences Hoptime SAF 63 9 9 MIRRORED BITS Protocol Support 63 9 10 Seamless Mode Emulation 63 9 11 Full Duplex Emulation 63 9 12 Co Located and Close Proximity Masters 63 Master Station Configuration 64 Antenna System for Co Located Master Stations 64 9 ...

Страница 9: ...nized for use in these hazardous locations by two independent agencies Underwriters Laboratories UL and the Canadian Standards Association CSA The UL certification for the transceiver is as a Recognized Component for use in these hazardous locations in accordance with UL Standard 1604 UL508 The CSA Certification is in accordance with CSA STD C22 2 No 213 M1987 UL CSA Conditions of Approval The tra...

Страница 10: ...ly when installed in accordance with the instructions outlined in this manual Failure to comply with these instructions may also void the user s authority to operate this device 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 h...

Страница 11: ...t problems without going to the Remote radio site Using appropriate software at the Master station diagnostic data can be obtained on any DSP radio in the system even while payload data is being transmitted See Performing Network Wide Remote Diagnostics on Page 49 The transceiver is housed in a compact and rugged die cast enclosure that need only be protected from direct exposure to the weather It...

Страница 12: ...ped from the factory This number is subject to many variations depending on what options are installed and where country the product is used Contact MDS is you have questions on the meaning of the code 2 3 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 ...

Страница 13: ...ommunications link for the transfer of data between two locations Invisibleplaceholder Figure 3 Typical Point to Point Link Adding a Tail End Link to an Existing Network A tail end link can be used to extend the range of a traditional licensed MAS system This might be required if an outlying site is blocked from the MAS Master station by a natural or man made obstruction In this arrangement a MDS ...

Страница 14: ...e and economical manner SAF works by dividing a network into a vertical hierarchy of two or more sub networks Extension radios designated as MODE X serve as single radio repeaters that link adjacent sub networks and move data from one sub network to the next one Invisibleplaceholder Figure 5 TransNET Repeater Network PW R SYN C TXD RXD MDS TransNET Master REPEATER STATION MDS x710B Series Radio EN...

Страница 15: ...02 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 1 8 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 1677A160 TNC to N RF Adaptor Plug Adapts radio s a...

Страница 16: ... Master stations are similar but an omni directional antenna is normally used instead of a direc tional type and a host computer replaces the data terminal equipment Invisibleplaceholder Figure 6 Typical Remote Station Arrangement 3 2 Site Selection For a successful installation careful thought must be given to selecting proper sites for the Master and Remote stations Suitable sites should provide...

Страница 17: ...tions in the communica tions path can usually be tolerated with minimal impact For longer range systems any substantial obstruction in the communications path could compromise the performance of the system or block communications entirely Much depends on the minimum signal strength that can be tolerated in a given system Fade margin for a TransNET system does not usually have to be as conservative...

Страница 18: ...formance as long as care is taken in choosing station location configuration of radio parameters and soft ware protocol techniques In general keep the following points in mind when setting up your commu nications network 1 Systems installed in rural areas are least likely to encounter interference those in suburban and urban environments are more likely to be affected by other devices operating in...

Страница 19: ... is a problem The REPEAT command sets a fixed number of unconditional retransmissions for downstream data 8 The RF power output of all radios in a system should be set for the lowest level necessary for reliable communications This lessens the chance of causing unnecessary interference to nearby systems 3 4 Antenna Feedline Selection Antennas The equipment can be used with a number of antennas The...

Страница 20: ...ine 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 Otherwise we re...

Страница 21: ...system design Please consider consulting a radio system engineer or other professional for advice or ground system design A well designed ground system will mini mize risk of electrical shock to personnel and the chances of equipment damage Table 2 Length vs loss in coaxial cables at 900 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 3...

Страница 22: ...ceiver is normally supplied from the factory set for an RF power of 30 dBm 1 Watt for 900 MHz and 27 dBm 0 5 Watt for 2400 MHz this is the maximum transmitter output power allowed under FCC rules The power must be decreased from this level if the antenna system gain exceeds 6 dBi The allowable level is dependent on the antenna gain feedline loss and the transmitter output power setting Power consi...

Страница 23: ... convert to dBi add 2 15 dB b Feedline loss varies by cable type and length To determine the loss for common lengths of feedline see Table 2 on Page 11 Maximum Power Setting in dBm EIRP in dBm 6 or less 30 36 8 28 36 10 26 36 12 24 36 14 22 36 16 20 36 Table 5 Antenna system gain vs power output setting USA for 2400 MHz models to achieve 36 dBm EIRP Antenna System Gain Antenna Gain in dBia minus F...

Страница 24: ...eam 4 1 Transceiver Installation The following is an overview of a typical procedure for installing the trans ceiver In most cases these steps alone will be sufficient to complete the installation Should further information be required contact the factory using the information given on the inside back cover of this manual If you are installing a tail end link system you should also review Section ...

Страница 25: ...ll the antenna and antenna feedline for the station Antennas should be mounted in the clear and in accordance with the manufacturer s instructions Additional information on antennas and feedlines is contained in Section 3 4 on Page 9 NOTE It is recommended to mount the antenna be at least 10 feet 3 meters from the radio RTU sensors and other components of the system to prevent RFI 3 Connect the da...

Страница 26: ...5 Mode As viewed from outside the radio 4 Measure and install the primary power for the transceiver It must be within 6 30 Vdc including transients and be capable of providing 7 5 watts over this voltage range Typical current draw is 400 mA 13 8 Vdc 0 9 A 6 Vdc A power connector with screw terminals is provided with each unit Strip the wire leads to 0 25 6 mm Be sure to observe proper polarity The...

Страница 27: ... 9 adapter cable MDS P N 03 3246A01 If necessary a cable of this type may be constructed using the information shown in Figure 21 on Page 69 For more information on connecting a PC terminal and preparing it for use refer to Section 6 1 on Page 22 The three essential settings for the Transceiver are as follows Mode Master Remote or Extension Network Address a unique number from 1 to 65000 Data Inte...

Страница 28: ... setup prior to installation This allows you to test various configurations in a controlled environment Once the evaluation network is working satisfactorily you can save the configuration of each unit in a data file on your PC s hard drive through the use of the MDS TransNET Configuration Software included on the support CD shipped with the radio MDS part number 03 2708A01 Most often there are ma...

Страница 29: ... set on each type of radio in the network For a detailed description of this network design see SAF Operation with Extension Radios on page 52 5 0 OPERATION 5 1 Initial Start up In service operation of the transceiver is completely automatic Once the unit has been properly installed and configured operator actions are limited to observing the LED status indicators for proper operation If all param...

Страница 30: ...ine the heading for maximum received signal strength In an MAS system RSSI readings are only meaningful when initiated from a Remote station This is because the Master station typically receives signals from several Remote sites and the RSSI would be continually changing as the Master receives from each Remote in turn Adjust the antenna for the highest most positive value to insure the greatest co...

Страница 31: ...ciency MODBUS and its derivatives are the only protocols that should require the buffer to be turned on See BAND A B C on Page 30 for details Hoptime Setting The default hop time setting is 7 7 ms Alternate settings of 14 and 28 milli seconds can be used to increase throughput but at the cost of increased latency A detailed explanation of the HOPTIME command can be found on Page 34 TotalFlow Proto...

Страница 32: ... radio s DIAG connector using an RJ 11 to DB 9 Adapter Cable MDS P N 03 3246A01 If desired a cable of this type may be constructed using the information shown in Figure 21 on Page 69 Once connected communication baud rate is established through the command interface To access the command interface press the key followed by one or more keystrokes delivered at about half second intervals until the p...

Страница 33: ...Master Station COMMAND DESCRIPTION AT ON OFF Details Page 29 Enables Master station to emulate a modem and respond to AT commands BUFF ON OFF Details Page 30 ON Seamless data OFF Fast byte throughput FEC ON OFF Details Page 33 Sets disables FEC Forward Error Correction setting HOPTIME 7 28 Details Page 34 Displays hop time or sets it to 7 or 28 ms LPM 1 0 Details Page 36 Used at Master to set all ...

Страница 34: ...three operating bands 2 4 GHz Model Only BAUD xxxxx abc Details page 29 Data communication parameters CODE NONE 1 255 Details page 31 Select the security encryption setting in the radio CSADDR 1 65000 NONE Details page 31 Used on a single Master Remote network to support TDD style simulated full duplex CTS 0 255 Details page 31 CTS delay in milliseconds A value of 0 returns CTS immediately CTSHOLD...

Страница 35: ...le the radio s energy conser vation Sleep mode function UNIT 10000 65000 Details page 43 Unit address used for network wide diagnostics Unique within associated net work XADDR 0 31 Details page 44 This unit s Extended address Typically the Master is set to zero 0 XMAP 00000000 FFFFFFFF Details page 44 Included Extended units in MODE X Extensions and Remotes only XPRI 0 31 Details page 44 Address o...

Страница 36: ...etails Page 34 Hop time value in milliseconds ms LPMHOLD Details Page 36 Time 0 1000 ms provided to give an RTU time to respond before the radio goes to sleep MODE Details Page 36 Current operating mode M Master R Remote X Extension Repeater MRSSI Details Page 37 Minimum RSSI level required to preserve syn chronization with a Master radio for Remotes in mobile service OWM Details Page 37 Owner s m...

Страница 37: ...his unit ON OFF SER Details Page 40 Serial number of radio SHOW CON Details Page 41 Display virtual modem connection status SHOW PWR Details Page 41 RF output power Measured RF power in dBm SHOW SYNC Details Page 41 Information on synchronization source SKIP Details Page 41 Frequency zones that are skipped SLEEP Details Page 42 Radio s Sleep Mode setting At Remotes Only SREV Details Page 42 Transc...

Страница 38: ...the command name XPRI Details Page 44 Address of the primary Extended radio unit Extension XMAP Details Page 44 Included Extended units in MODE X Extensions and Remotes only XRSSI Details Page 44 Minimum RSSI level required to preserve synchronization with a non primary radio Only meaningful when XPRI is not NONE Table 11 Diagnostic and Test Functions Command Description KEY Details Page 35 Enable...

Страница 39: ...he 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 Contact the factory for more information on configuring the alarm mask AT ON OFF Hayes Compatible AT Command Support AT style modem commands also know as Hayes Comp...

Страница 40: ...time of installation and must be common across each radio in a given network 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 default is OFF The setting of this parameter affects the timing of received data sent out the DATA connector Data transmitted over the air is unaffected by the BUFF setting ...

Страница 41: ...splay 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 If the code is later forgo...

Страница 42: ...e 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 If CTS KEY is selected the radio is assumed to be controlling another radio such as in a repeater or tail end link system The RTS line is ignored a...

Страница 43: ...ostics 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 ROOT Always one and only one per network including units associated through ...

Страница 44: ... of which command setting caused the problem this command allows you to get back to a known working state NOTE Caution should be exercised when using the INIT command on radios in a sys tem employing the Store and Forward feature Settings relating to the use of Ex tension services will be lost and will need to be re entered Record the settings for XADDR XPRI and XMAP before using the INIT command ...

Страница 45: ...ndent TX xxx Receiver Test Frequency 915 000 MHz 2436 0 MHz Model dependent RX xxx Sleep Mode OFF SLEEP OFF Primary Extension Radio Address 0 Master XPRI 0 Synchronization Source Map None XMAP 0 Extended Address 0 XADDR 0 For MASTER radios AT Command Support OFF AT 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 ...

Страница 46: ...ode network wide all Remotes pick it up and start saving power by automatically sleeping LPM 1 can work in conjunction with the AT dialing feature The dialed unit will be forced awake all others will sleep 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 L...

Страница 47: ...ger The output trigger feature sets up a 1 second default delay on delivery of RXD serial data however a receipt of RTS causes cancellation of timer followed by immediate data delivery Hierarchy Rules if OT ON RTS always cancels data delay and outputs immediately 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...

Страница 48: ...f 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 The command selects or displays the maximum number of times 0 to 10 that a Remote radio will re transmit data T...

Страница 49: ...VAILABLE if the Dependent Master is not synchronized RTU ON OFF 0 80 Remote Terminal Unit Simulator This command re enables or disables the radio s internal RTU simulator which runs with MDS 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 in...

Страница 50: ...ered the prompt changes to SETUP and Hopping is disabled 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 t...

Страница 51: ...displayed in parentheses SHOW SYNC works for Dependent Masters A value of zero 0 means the station is a Master synchronized to a Clock Sync Master The SHOW SYNC command will display an asterisk after depth value if the radio is operating with co located Masters 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 ho...

Страница 52: ...ision Level This command displays the version of the firmware currently loaded into the transceiver Table 13 900 MHz Frequency Skip Zones ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8 902 2 to 905 2 905 4 to 908 4 908 6 to 911 6 911 8 to 914 8 915 0 to 918 0 918 2 to 921 2 921 4 to 924 4 924 6 to 927 6 Table 14 2400 MHz Band A Frequency Skip Zones ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE ...

Страница 53: ... degrees Celsius Note that the radio is specified to operate in an environment between 30 C and 60 C This internal reading may be higher than the outside temperature by several degrees TX xxxx Radio Transmit Test Frequency This command sets or displays the test transmit frequency used in place of hopping whenever the radio is in Setup mode The test transmit frequency for the 900 MHz radios can be ...

Страница 54: ...rward Settings panel XPRI 0 31 Primary Extended Address Will display or program the extended address of the primary radio with which this radio will attempt to synchronize and communicate A setting of NONE allows the unit to synchronize with any Master or Extension in the XMAP list Parameter only meaningful for Remote or Extension units XRSSI NONE 40 120 Extension RSSI Level The XRSSI command is u...

Страница 55: ...l zone data is reset with the ZONE CLEAR command 7 0 TROUBLESHOOTING Successful troubleshooting of an MDS transceiver system is not difficult but requires a logical approach It is best to begin troubleshooting at the Master station as the rest of the system depends on the Master for polling instruc tions and synchronization data If the Master station has problems the oper ation of the entire netwo...

Страница 56: ... as a major or minor alarm A brief description of the alarm is also given Alarm codes and their meanings are listed in Table 18 If more than one alarm exists the word MORE appears at the bottom of the screen additional alarms can be viewed by pressing Major Alarms versus Minor Alarms Major alarms report serious conditions that generally indicate a hardware failure or other abnormal condition that ...

Страница 57: ...sizer loops is reporting an out of lock condition 08 Major The system is reporting that it has not been calibrated Factory calibration is required for proper radio operation 10 Major The DSP was unable to properly program the system to the ap propriate defaults A hardware problem may exist 12 Major Receiver time out alarm 16 Minor The unit address is not programmed 17 Minor A data parity fault has...

Страница 58: ... interface connections at the radio and the connected device b Check the antenna feedline and connectors Reflected power should be less than 10 of the forward power reading SWR 2 1 or lower c If the Remote radio is in synchronization but performance is poor check the received signal strength using the RSSI com mand Page 38 If RSSI is low it may indicate antenna prob lems or misalignment of directi...

Страница 59: ...ok MDS P N 05 3467A01 1 Program one radio in the network as the root radio by entering the DTYPE ROOT command at the radio 2 At the root radio use the DLINK ON and DLINK baud rate commands to configure the diagnostic link protocol on the RJ 11 port 3 Program all other radios in the network as nodes by entering the DTYPE NODE command at each radio 4 Use the DLINK ON and DLINK baud rate commands to ...

Страница 60: ... the top cover s LED panel and the motherboard You do not need to disconnect the ribbon cable 4 Locate the fuse holder assembly behind the power connector See Figure 16 5 Loosen the fuse from the holder using a very small flat bladed screwdriver then use a small pair of needle nose pliers to pull the fuse straight up and out of the holder 6 Use an ohmmeter or other continuity tester to verify that...

Страница 61: ... text on the screen instead of downloading it to your local hard drive After the S28 file has been saved to your computer you may use either MDS TransNET Configuration Software or MDS Radio Software Upgrade programs to install this firmware in your radios 8 2 Installing Firmware Into Your Radio 1 Connect the PC to the radio s DIAG port using an RJ 11 to DB 9 Adapter Cable MDS Part No 03 3246A01 If...

Страница 62: ...F will cut the overall data throughput in half however multiple networks can be inter connected with no additional loss in network throughput Simple Extended SAF Network The following example depicts a two level network utilizing a single Master M and an Extension X radio See Figure 17 Invisibleplaceholder Figure 17 Simple Extended SAF Network Networks J and K In this network messages directed to ...

Страница 63: ...ally the sub network side of an Extension behaves like a corre sponding connection between a Master and a Remote When an Extension is using its Master personality it sends acknowledg ments and performs unconditional retransmissions based on its REPEAT count When an Extension is using its Remote personality acknowledgments are processed and retransmissions occur as needed up to the number of times ...

Страница 64: ...r controls the synchronization for a given network for all modes Setting the Master to SAF ON broadcasts a command from the Master to all radio units in the associated network either directly or through an Extension radio This command puts all radios in the entire system in a special time division duplexing mode that alternates between two timeslots One time slot for data communications upstream a...

Страница 65: ...rimary 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 If RSSI is less than XRSSI or if XRSSI is NONE the radio will force a loss of synchronization and hunt for the primary again as described in the previous p...

Страница 66: ...ease consider the following additional information before using the AT commands Radio commands and AT commands are independent with unique syntax and functional objectives ATDT is not a radio command it is part of the payload data input and follows the syntax for Hayes compatible modems TransNET commands are entered through the RJ11 DIAGNOSTIC port on Master and Remote radios AT ON and UNIT are ex...

Страница 67: ...d Services The installation and configuration of a radio network with an Extension using SAF 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 It will serve as the sole gateway to the outside world The following three tables detail the parameters that will need to be set on each type of radio i...

Страница 68: ...he network use the same number Extended Ad dress XADDR Details Page 44 A number between 0 and 31 that will serve as a common address for radios that syn chronize directly to this Ex tension radio serving as Master for associated sub network units Zero 0 is recommended for the Master station Primary Extended Address XPRI Details Page 44 XADDR number of the pri mary or preferred radio with which thi...

Страница 69: ... asserted the radio will be ready to receive data within 75 milliseconds or less The radio can be awak ened more often if desired by your RTU NOTE The SLEEP function must be set to ON without this a ground on Pin 4 will be ignored Table 23 Configuration Parameters for SAF Services Remote Radio s Parameter Command Description Operating Mode MODE R Details Page 36 Sets the radio to serve as a Remote...

Страница 70: ...uction in power consumption 9 6 Low Power Mode LPM Master Enabled The Low Power Mode LPM puts Remote radios into a configuration similar to Sleep but with some important distinctions The most important difference is the radio will automatically go to sleep in this mode regardless of the condition of Pin 4 of the DATA interface connector This feature trades increased latency to gain power savings T...

Страница 71: ... delay values for various settings of TransNET radios setup for Low Power Mode LPM See LPM 1 0 on Page 36 It assumes the primary power voltage is 13 8 Vdc and the polling rate is minimized to yield best case power consump tion current values The more each RTU is polled and asked to transmit the more current will be consumed Therefore these values are the lowest that can be expected Power consumpti...

Страница 72: ...for Minimum RSSI MRSSI Initially the Remote will favor Masters with signal strengths 10 dB greater than the MRSSI threshold This will allows for some signal degradation of the new Master as the Remote travels When the average signal level from the currently associated Master falls below the user defined MRSSI level the Remote will become out of sync and seek an alternate Master with a reliable sig...

Страница 73: ...ss operating mode but can be very slow to start especially if it waits for the reception of long messages before passing on the message 9 11 Full Duplex Emulation If your system design needs to support PTP or Point to Multipoint applica tions and your communications must appear to be full duplex to the connected devices set the Master to CSADDR xxxxx where xxxxx is the Network Address ADDR This wi...

Страница 74: ... HOPTIME FEC and SAF values are provided by the Clock Sync Master to all dependent units NOTE If a Dependent Master station is unable to find the Clock Sync Master station it will not be able to operate properly and the associated network will be out of service Antenna System for Co Located Master Stations Using this TDD Clock Sync mode will prevent any two Masters from trans mitting at the same t...

Страница 75: ...ata 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 When the CODE command is used the same value must be programmed into all radios in the network See CODE NONE 1 255 on P...

Страница 76: ...Vdc Size 5 30 W x 3 50 D x 1 40 H 135 W x 89 D x 36 H mm Weight 1 Lb 0 5 k w o brackets 1 15 Lb 0 52 k w brackets Weight 1 Lb 0 5 k w o brackets 1 15 Lb 0 52 k w brackets Case Die cast aluminum Agency Approvals FCC Part 15 247 E5MDS EL805 Industry Canada RSS 210 and RSS 139 CAN 3738A 12122 UL CSA Class 1 Div 2 Groups A B C and D hazardous locations Contact MDS for information on availabil ity of g...

Страница 77: ...by 3dB Co channel 10 dB Adjacent channel 30 dB Two channels away 40 dB Three channels away 48 dB Time Required to Synchronize with Master Radio 0 5 seconds typical 10 2 Product Specifications 2 4 GHz GENERAL Frequency Band 2401 6 2477 8 MHz ISM band A 2401 6 MHz 2427 0 MHz B 2427 2 MHz 2452 6 MHz C 2452 8 MHz 2478 2 MHz Subdivided into eight 3 MHz zones Hop Pattern Based on network address Frequen...

Страница 78: ...85 Interface Connector DB 9 female Data Rate 300 600 1200 1800 2400 4800 9600 19200 38400 57600 115200 bps asyn chronous Data Latency 7 ms typical Byte Length 10 or 11 bits Maximum Data Transmission Continuous up to 115200 bps RF CHARACTERISTICS TNC RF Connector TRANSMITTER Power Output at antenna connector 0 1 to 0 5 watt 20 dBm to 27 dBm set by user Duty Cycle Continuous Modulation Type Binary C...

Страница 79: ...balanced format depending on how the radio was configured at the factory The radio supports data rates of 300 600 1200 1800 2400 4800 9600 19200 38400 57600 and 115200 bps asynchronous data only The DATA connector mates with a standard DB 9 plug that is available from many electronics parts distributors Table 27 and Table 28 provide detailed pin descriptions for the DATA connector in RS EIA 232 mo...

Страница 80: ...te radio including transmit receive modem and diag nostic functions This allows for greatly reduced power consumption yet preserves the radio s ability to be quickly brought on line See Using the Radio s Sleep Mode Re mote Units Only on Page 59 for details 5 IN Signal Ground Connects to ground negative supply potential on the ra dio s PC board and chassis 6 OUT Alarm Output An RS 232 high space 5 ...

Страница 81: ...inverting driver output Supplies data to the connected device 3 IN RXD RXA Non inverting receiver input Accepts data from the connected device 4 IN Sleep A ground on this pin turns off most circuits in a Re mote radio including transmit receive modem and diag nostic functions This allows for greatly reduced power consumption yet preserves the radio s ability to be quickly brought on line See Using...

Страница 82: ...tails Care should be taken when soldering to the PCB eyelets due to their small size For this reason only qualified personnel should install the jumpers and external connections Installation of internal jumpers and connection to non standard interface pins may void the product s warranty If you are uncertain of your interface design please consult with the MDS Technical Services Department for a r...

Страница 83: ...application of the user I O connections may require one digital input and one digital output to be controlled by network diagnostics In this example H3 could be jumpered to H7 I O 1 to RJ 11 Pin 1 and H4 jumpered to H8 I O 2 to RJ 11 Pin 2 Using InSite I O 1 could be configured as an output and I O 2 as an input Table 29 TransNET User I O Connection Resources Function or Service Range Available at...

Страница 84: ...40mW 5 125 32mW 6 115 25mW 7 100 20mW 8 090 16mW 9 080 125mW 10 071 10mW 11 064 12 058 13 050 14 045 15 040 16 0355 dBm mV Po 17 31 5 18 28 5 19 25 1 20 22 5 01mW 21 20 0 22 17 9 23 15 9 24 14 1 25 12 8 26 11 5 27 10 0 28 8 9 29 8 0 30 7 1 001mW 31 6 25 32 5 8 33 5 0 34 4 5 35 4 0 36 3 5 37 3 2 38 2 85 39 2 5 40 2 25 1µW 41 2 0 42 1 8 43 1 6 44 1 4 45 1 25 46 1 18 47 1 00 48 0 90 dBm mV Po 49 0 80...

Страница 85: ...tion 20 selection 9 SWR check 21 system gain vs power output setting table 13 Yagi illustrated 10 ASENSE command set display alarm output sense 29 B BAUD command set display data interface port attributes 29 Baud rate setting 22 setting for RJ 11 DIAG port DLINK command 49 BUFF command set display received data handling mode 30 C Cable data equipment to DATA INTERFACE connector 15 22 data interfac...

Страница 86: ...display set radio mode as master remote or extension 36 MODE radio operating mode 36 most often used commands 28 network configuration 23 OWM set display optional owner s message 37 OWN set display optional owner s name 37 PORT display set current data port 37 PWR set display RF forward output power 38 Radio transmitter test frequency TX 43 RSSI display received signal strength 38 RTU enable disab...

Страница 87: ... InSite software for network wide 49 Diagnostics Link DLINK 32 Display alarm output sense ASENSE command 29 alarms STAT command 43 CTS hold timer value CTSHOLD command 32 CTS line response timer value CTS command 31 data interface baud rate BAUD command 29 device behavior DEVICE command 32 hoptime setting HOPTIME command 34 network address ADDR command 29 operating status commands 24 owner s messa...

Страница 88: ...eedline selection 9 10 Firmware Revision Level Command SREV 42 Forward Error Correction FEC Command 33 Fuse Replacement 50 G Gate radio diagnostics type 33 50 H Hardware Revision HREV Command 35 Hayes Compatible AT Command AT 29 Hoptime setting 21 HOPTIME Command radio transmitter hop timing 34 HOPTIME command set display hoptime setting 34 I Illustrations antenna Yagi 10 data interface cable wiri...

Страница 89: ... Command low power mode 36 LPMHOLD Command 36 M Map 44 Map of Extension Addressses XMAP 44 Master Station default settings 34 MIRRORED BITS Protocol Support 62 63 MODE Command 36 MODE command display set radio mode as master remote or extension 36 MODE command display set radio s operating mode as master remote or extension 36 37 Model configuration code illustrated 72 Modes Low Power Mode versus ...

Страница 90: ...ORT command set display current data port 37 Power Low Power Mode versus Remote s Sleep 62 Power RF how much can be used 11 Measurement 41 set display RF forward output PWR command 38 Power saving mode see Sleep Mode Primary Extension Address XPRI 44 Procedures antenna aiming 20 antenna and feedline selection 9 antenna SWR check 21 connecting data equipment to DATA INTERFACE connector 15 22 connec...

Страница 91: ...or Command RSSI 38 Remote radio default settings 34 Remote station typical arrangement illustrated 6 Remote Terminal Unit Simulator Command RTU 39 Repeater Operation See Store and Forward SAF Restore to Factory Defaults INIT 34 RJ 11 Diagnostic Interface Connection 69 Root radio diagnostics type 33 50 RSSI command display received signal strength 38 RTU command enable disable internal RTU 39 RX co...

Страница 92: ...NC Command 41 Show Virtual Connection Status Command SHOW CON 41 Site selection 6 SKIP command set display frequency zone to skip 41 Skip Radio Operating Zones SKIP 41 SLEEP command display set radio s sleep setting 42 SLEEP command transceiver sleep ON OFF 42 Sleep Mode 59 Spread spectrum basic principles of 2 SREV Command 42 STAT command list alarms 43 Store and Forward SAF 4 23 27 34 40 45 52 5...

Страница 93: ... table 48 Turn Off Radio Transmitter Test Signal DKEY Command 33 Turn On Radio Transmitter Test Signal KEY Command 35 U UNIT Command unit address 43 Upstream Repeat Transmission Count Command RETRY 38 X XADDR extended address command 17 27 34 35 45 55 58 XADDR extended address Command 37 XPRI command display set extended address 44 XRSSI command sets minimum RSSI level to maintain sync w non prima...

Страница 94: ...x MDS TransNET I O Guide MDS 05 2708A01 Rev D ...

Страница 95: ...adio to its proper operating specifications If return of the equipment is necessary you will be issued a Service Request Order SRO number The SRO number will help expedite the repair so that the equipment can be repaired and returned to you as quickly as possible Please be sure to include the SRO number on the outside of the shipping box and on any correspondence relating to the repair No equipmen...

Страница 96: ...Microwave Data Systems Inc Rochester NY 14620 General Business 1 585 242 9600 FAX 1 585 242 9620 Web www microwavedata com 175 Science Parkway A product of Microwave Data Systems Inc ...

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