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RFDATATECH URT-500, Руководство по установке, монтажу, эксплуатации и программированию

RFDATATECH URT-500 - Руководство по установке, настройке, эксплуатации и программированию. Скачайте бесплатно руководство по эксплуатации с manualshive.com. Узнайте, как правильно установить и настроить ваш продукт для оптимальной работы.

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URT500 Manual

Page 12 of 42

Rev. C – 6 August 2008

Содержание URT-500

Страница 1: ...URT500 RADIO MODEM SETUP INSTALLATION OPERATION PROGRAMMING MANUAL URT500 Manual Page 1 of 42 Rev C 6 August 2008 ...

Страница 2: ... 17 5 5 RF POWER 17 5 6 INTERNAL MODEM 17 5 7 FORWARD ERROR CORRECTION 17 5 8 SQUELCH TAIL DRIBBLE BITS ELIMINATION 18 5 9 STATUS LED S 18 5 10 TIME OUT TIMER 19 5 11 POWER CONSUMPTION 19 5 12 POWER SAVE MODE 19 5 13 RSSI RECEIVE SIGNAL STRENGTH INDICATION 20 6 ANALOGUE MODES OF OPERATION 21 6 1 ANALOGUE CAPABILITY 21 6 2 EXTERNAL AUDIO MODEM INTERFACE 21 6 3 KEYING THE TRANSMITTER IN AUDIO MODE 2...

Страница 3: ...9 2 POWER SUPPLIES 36 9 3 EFFECTIVE RADIATED POWER ERP 36 9 4 ANTENNAS COAX FEEDERS PERIPHERALS 37 9 5 MOUNTING INSTALLATION 40 URT500 Manual Page 3 of 42 Rev C 6 August 2008 ...

Страница 4: ...1 2 2 RIGHT TO CHANGE In the interest of improvement R F Technologies reserves the right to change the technical specifications or functions of its product without notice 1 2 3 SOFTWARE R F Technologies Ltd software is delivered as is R F Technologies Ltd does not grant any kind of warranty or guarantees on its saleability or it s suitability for use in specific applications Under no circumstances...

Страница 5: ...s been designed with as near an open architecture as possible to allow it to inter work with many legacy products still operating in the field today and to provide an easy upgrade path from audio to digital to networked systems The large flash memory enables future upgrades to be easily implemented in the existing hardware The URT500 meets licence exempt ETS300 220 licensed ETS300 113 and the VNS2...

Страница 6: ...be required a piggy back memory board with a further 512k is available to download new code to the processor 2 8 SOFT MODEM The URT500 has a soft modem which offers unparalleled performance and flexibility over a wide range of speeds and formats and enables future formats to be downloaded from a PC or over the air Within a 12 5kHz channel the unit can be programmed for 150 2400bps FSK FFSK with Be...

Страница 7: ...bleshooting 2 10 3 TIME OUT TIMER The transmitter within the URT500 has a user programmable time out timer which allows the maximum continuous transmission time to be set in order to prevent channel blocking due to a fault 2 10 4 SQUELCH TAIL ELIMINATOR Where the presence of a Mute Squelch tail may cause problems at the end of a message a simple packetising option can be enabled to resolve the sit...

Страница 8: ...C shielded high impact polycarbonate end caps Size 100mm W x 130mm L x 45mm H Mounting DIN rail or can be screwed to a flat surface using adaptor plate Weight 620g Connectors Main 25 way D Type Male RF BNC Led Indicators TX Busy System RXD TXD RTS CTS DCD DTR 3 1 2 TRANSMITTER RF Output Power 50mW to 5Watts Bandwidth New and old MPT1411 bands without re alignment Duty Cycle up to 70 Internal Modul...

Страница 9: ...le odd Even or None NRZI On or Off Stop bits Programmable 1 or 2 Data Bits Programmable 7 or 8 Signalling Formats Programmable V23 Bell202 up to 1200 baud 2400 baud FFSK 4800 baud GMSK 9600 baud 4 level FSK Synchronous Async Programmable either up to 1200bps above 1200bps synchronous Over air Baud Rate 150 9600bps within 12 5kHz Bit Error Rate 150 2400 baud less than 1 x 10 3 at 120dBm 4800 baud l...

Страница 10: ... normally stated on the licence BS2011 The unit complies with the Vibration specification BS2011 3 2 2 EUROPEAN APPROVALS ETS300 220 The unit meets the specification for European licensed exempt communications with a maximum RF power level of 500mW Please note the permitted power level may vary from country to country ETS300 113 The unit meets the specification for licensed data radios ETS301 489 ...

Страница 11: ... 04375 5 457 55625 463 05625 6 457 56875 463 06875 7 457 58125 463 08125 8 457 59375 463 09375 9 457 60625 463 10625 10 457 61875 463 11875 11 457 63125 463 13125 12 457 64375 463 14375 13 457 65625 463 15625 14 457 66875 463 16875 15 457 68125 463 18125 16 457 69375 463 19375 17 457 70625 463 20625 18 457 71875 463 21875 19 457 73125 463 23125 20 457 74375 463 24375 21 457 75625 463 25625 22 457 ...

Страница 12: ...458 23125 463 73125 60 458 24375 463 74375 61 458 25625 463 75625 62 458 26875 463 76875 63 458 28125 463 78125 64 458 29375 463 79375 65 458 30625 463 80625 66 458 31875 463 81875 67 458 33125 463 83125 68 458 34375 463 84375 69 458 35625 463 85625 70 458 36875 463 86875 71 458 38125 463 88125 72 458 39375 463 89375 73 458 40625 463 90625 74 458 41875 463 91875 75 458 43125 463 93125 76 458 44375...

Страница 13: ...8 5250 4 458 5375 5 458 5500 6 458 5625 7 458 5750 8 458 5875 9 458 6000 10 458 6125 11 458 6250 12 458 6375 13 458 6500 14 458 6625 15 458 6750 16 458 6875 17 458 7000 18 458 7125 19 458 7250 20 458 7375 21 458 7500 22 458 7625 23 458 7750 24 458 7875 25 458 8000 26 458 8125 27 458 8250 Not Used 28 458 8375 Not Used 29 458 8500 30 458 8625 31 458 8750 32 458 8875 33 459 9000 Not Used 34 459 9125 ...

Страница 14: ...enclosure MPU control interface board transceiver module and LED board Access to the internal links requires removal of the screws attaching the end caps and removal of the covers The LED board is attached to the top cover and connects to the main board connector JP3 URT500 Manual Page 14 of 42 Rev C 6 August 2008 ...

Страница 15: ...erted Unless otherwise specified the product is shipped set for True RS232 operation Should these parameters need to be changed the following can be used as a guide 1 1 1 1 1 1 1 JP6 JP6 JP6 JP6 JP5 JP5 JP5 JP2 JP2 1 1 Link 2 3 RS232 without DTR shutdown Link 1 2 RS232 with DTR shutdown Link 4 5 5V TTL Link 2 3 or No Links Inverted Signal Link 1 2 Non Inverted Signal JP3 Link 1 2 3 4 5 6 for norma...

Страница 16: ... incompatible with the pin usage on the URT500 and may cause damage to the URT500 or any other equipment to which it is connected It is important to use the correct cables for the radio both when connecting traffic and when programming 5 2 SWITCHES The two front panel BCD switches select channels or if both are set to zero program mode is entered When viewing a URT500 with the aerial connector at ...

Страница 17: ...If this format is programmed to match the serial port and runs at the same speed there is no overhead data is transmitted over air at the same speed as it is received at the serial port The exception to this is a radio baud setting of 9600 baud where an extra eight synchronisation bits are sent after every 8 data bytes For a data format of 8 bits no parity and 1 stop bit this represents a redundan...

Страница 18: ...modem reports errors in two ways firstly the BUSY led will come on and the SYS led will flash a number of times the BUSY led will then go out again and if the fault persists the procedure will be repeated An error number can be determined by counting the number of times the SYS led flashes while the BUSY led is on Alternatively the error can be read by monitoring the serial port using a PC comms p...

Страница 19: ...A 300mA 5 12 POWER SAVE MODE The URT is equipped with an internal and external power save mode These are outlined below 5 12 1 INTERNAL POWER SAVE In this mode the microprocessor switches the transceiver off and after a pre programmed time Save on time switches the unit back on Save off time If a carrier is not detected then the transceiver again switches off If during the time the transceiver is ...

Страница 20: ...ly measures its value by an internal A D converter The radios are individually calibrated during production so that signal strength can then be read in dB micro volts on a PC connected to the serial port In addition to this PC capability a 0 to 5Vdc voltage proportional to the received signal strength is also available directly on the interface connector URT500 Manual Page 20 of 42 Rev C 6 August ...

Страница 21: ...ector or secondly by using the Tone Operated Switch TOX The TOX can be programmed to key the radio on detection of either V23 mode 2 or Bell 202 tones Other tone sets can be provided for by special order 6 4 PROGRAMMABLE AUDIO PARAMETERS 6 4 1 INTERFACE MODE The Audio Mode selects the interface and path of the signals within the URT500 and when the 2 4 wire port is used it should either be set for...

Страница 22: ...UTE The receive audio path can be set to mute when no incoming carrier is detected if this option is turned on 6 4 6 LEADOUT DELAY The lead out delay is the time the transmitter stays up after the audio data finishes this is to avoid mute noises that could corrupt data that is not framed packeted and does not have an end of message character This is programmable between 0 256milli seconds URT500 M...

Страница 23: ...ing problems data will still be accepted into the buffer when CTS is de activated due to buffer filling during transmit however any data received once CTS has dropped at the end of a transmission will be discarded this prevents such data from being prefixed to the beginning of the next message 7 2 2 TRANSMISSION WITHOUT HARDWARE HANDSHAKE If RTS CTS handshaking is disabled the radio will start tra...

Страница 24: ...ed for the transmit and receiver synthesiser to be loaded and locked prior to transmission reception This timing constraint is important when deciding how soon after receiving a message a reply may be sent For simplex semi duplex operation the URT500 is ready to receive data approximately 25ms after transmission ceases It is therefore necessary to either wait this length of time after receiving a ...

Страница 25: ... a scanning system with the base station on continuous transmit the base station lead in delay can be set for Zero thereby saving valuable time as the internal outstation modems will always be synchronised Baud 150 300 600 1200 2400 4800 9600 Min tlid 80ms 60ms 40ms 40ms 40ms 20ms 30ms TABLE C The duration of a byte at the radio baud rate is dependant upon the data format employed the table below ...

Страница 26: ... to zero After the time trxrdy has expired the radio is ready to receive a new signal N B If RTS CTS handshaking is not used the transmitter is turned on whenever data is received at the serial port the transmitter is left on until all buffered data has been transmitted and no data has been input for a time equivalent to the length of two characters at the radio baud rate refer to table C In gener...

Страница 27: ...ined by the baud rate this allows a phase locked loop to lock on to the data stream to give better performance in noisy conditions the inverted NRZI encoding allows this to continue even when the signal is idling sending stop bits The inverted NRZI encoding gives a further advantage with GMSK signalling since the polarity of the signal is unimportant In asynchronous mode NRZ encoding is used where...

Страница 28: ...p the outstations modems synchronised so little or no pre amble lead in time is required A matching 19 mountable basestation the XRT9000 is available for use with the URT500 7 6 3 REPEATER STORE FORWARD OPERATION Once the system ceases to be point to point or point to multi point because of range or terrain different approaches have to be taken to suit individual applications Some of these will in...

Страница 29: ... 1 2 V I N R S 2 3 2 L I N E L E D L E D T X 0 B U S Y R S S I T X D I G N D T X R X A N T E N N A S Y S B U S Y T X D T R C T S B U S 0 D O 1 D I 1 D O P r o g r a m S e l e c t D S R R I R T S T X D D C D R X D R X ART RadioMod e m L I N E L I N E 1 2 V O U T I N R F T e c h n o l o g i e s L t d 0 D I 1 0 B U S Y D I D O D O 1 R S 2 3 2 R S S I G N D T X L E D T X E L E D P r o g r a m S e l e ...

Страница 30: ... D I LED TX RSSI LE D BU SY 0 E B U S R XD D C D TX P rogram C TS TX D R TS BU SY SY S D TR RI D SR R X E L I N E O U T 12V RS232 I N LI N E 0 BU SY LE D RSSI TX LED D I TX G N D R F Technol ogi esL t d A RT Radio Modem T X R X A N TEN N A SY S BU SY TX B U S 0 D O 1 D I 1 D O D TR C TS P rogram Sel ect R X D SR RI R TS TX D D C D R XD E L I N E O U T R F Technol ogi esL t d A RT Radio Modem 12V R...

Страница 31: ...med with a routing table this is also accessed in the EDIT MODEM INTERFACE menu by setting ROUTING TABLE to ON and selecting EDIT ROUTING TABLE This selection leads to several pages of Modbus addresses the route by which every Modbus address is reached must then be entered for example if the Modbus device with address 37 is physically connected to the radio with radio address 23 and radio 23 is ac...

Страница 32: ...in the EDIT MODEM INTERFACE menu of the A4P programme should be set to OFF The RI ring indicator line is asserted when a radio detects an incoming message it can be used to wake up a Modbus slave device when the Modbus slave is ready to accept data it should assert DTR DSR will be asserted in response and the received message will be output to the Modbus device The HOST INACTIVITY TIME field in th...

Страница 33: ...aster station The address in the protocol message is therefore not checked and the reply is simply sent back down the established link to the master station radio where it is output from the serial port As the reply is passed back the link members no longer consider themselves to be part of an established link and return to idle Note that there is no differentiation in operating mode between a rel...

Страница 34: ...ted to any one radio 8 3 2 POWER SAVE OPERATION WITH RFT ROUTING When RFT ROUTING mode is enabled in the configuration programme two further fields appear entitled MIN PWR SAVE ADDRESS and MAX PWR SAVE ADDRESS if power save operation is not required set both these fields to zero If power save operation is required it is enabled by setting the RADIO ADDRESS to a value greater or equal to MIN PWR SA...

Страница 35: ...adio DSR is asserted in return to indicate that the radio is awake and ready to accept data If use of the handshake lines is not required DTR should be connected either to a voltage of 3 5 to 15V such that sleep mode is never allowed or at slave sites it can be connected to RI so that the radio stays awake as long as RI is asserted 8 3 4 TIMEOUTS IN RFT ROUTING MODE When a transmission from a mast...

Страница 36: ...ge of uninterruptible power supply units with an in built charger and power fail indication A range of suitable Gel type batteries is available should a back up supply be required during power fail 9 3 EFFECTIVE RADIATED POWER ERP The Radio Frequency RF Power allowed can be specified in two ways The Terminated power into 50 ohms which in the case of the URT500 would be a maximum of 5Watts The ERP ...

Страница 37: ...or corner reflector is probably the best type of antenna to use As directional antennas provide relatively high gain in the forward direction within a limited beamwidth and very good rejection of unwanted signals at the rear The number of elements and hence the size will depend on the gain and beam width required Yagi antennas can be used in the vertical vertically polarised or horizontal Horizont...

Страница 38: ... the use of the wrong coax feeder can seriously affect the performance of the system Hence the coax cable should be selected to give a low loss over the distance required For outstations in the local vicinity of the scanner base station the loss is not very important but for distant stations the loss is very important As a rule of thumb never operate a system with a loss of more than 3dB To illust...

Страница 39: ...etected volts from the reflected returned RF power This ratio is used to measure the combined coax cable and antenna match A good match will ensure that most of the RF Power is radiated whereas a bad match will result in the reflection of a large amount of the power thereby reducing the transmitter s range A perfect match will give a 1 1 ratio and bad match will give 2 1 or higher For guidance a g...

Страница 40: ...ny plane but should not be exposed to rain etc as the enclosure and connectors do not meet the relevant IP ratings If IP65 67 or 68 is required then an additional enclosure will be required A number of suitable enclosures are available as options 9 5 1 URT500 DIMENSIONS URT500 Manual Page 40 of 42 Rev C 6 August 2008 ...

Страница 41: ...ith the optional mounting bracket 9 5 3 ANTENNA CONNECTION THROUGH AN ENCLOSURE When a URT500 is used within an enclosure the coax antenna cable can either be brought out via a suitable gland or via the N type adapter kit shown below URT500 Manual Page 41 of 42 Rev C 6 August 2008 ...

Страница 42: ...sion of R F Technologies Ltd 27 29 New Road Hextable Kent BR8 7LS Tel 44 0 1322 614 313 Fax 44 0 1322 614 289 E Mail info rfdatatech co uk ADDITIONAL PRODUCT DATA www rfdatatech co uk URT500 Manual Page 42 of 42 Rev C 6 August 2008 ...

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