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Commercial In Confidence

30

3.7

SERIAL AND RS232 INTERFACE

The ART400 serial port is used to program and control the modem/transceiver. The comms
port is selectable to provide full RS232 or 5V TTL signal levels, either mode can be run true or
inverted, these modes are selected by links on the processor pcb, which are normally
specified by the client and configured prior to despatch. Should these parameters need to be
changed in the field, the following can be used as a guide.

JP11

Leave open or link 2-3 for inverted signal (normal)

Link 1-2 for non-inverted

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Содержание ART400

Страница 1: ...ART SERIES INSTALLATION OPERATION PROGRAMMING MANUAL COVERS ART400 ART400T ART400R SYNTHESISED RADIO MODEMS REPEATERS October 2001 ISSUE 1 rev1 2...

Страница 2: ...al Modem Operation 1 16 1 External 1 16 2 Tone Operated Switch TOX 1 16 3 Internal 1 17 Modes of Operation Protocol Handling 1 17 1 Radio Modem Modes of Operation 1 17 1 1 Dumb Modem 1 17 1 2 Protocol...

Страница 3: ...Batteries 2 4 9 Antennas 3 0 OPERATION AND INTERFACE 3 1 Exploded View 3 2 Operation Interface Description 3 1 1 Simplex Semi duplex Full Duplex 3 3 2 Single or Dual Antenna Operation 3 3 3 Coax Confi...

Страница 4: ...Radiated Power ERP 4 4 Safe Distance Calculation 4 5 Antennas Coax Feeders Peripherals 4 5 1 Antennas 4 5 2 Types of Antennas 4 5 3 Omni Directional Antennas 4 5 4 Directional Antennas 4 5 5 Patch An...

Страница 5: ...f Time 6 8 8 3 Save Resume Time 6 8 9 Serial Number 6 8 10 Note Pad 6 8 11 Lockout Time Mode 6 8 12 Lockout Time 6 8 13 Audio Response 6 8 14 Carrier Mute 6 8 15 Menu Options 6 8 15 1 Return to Main M...

Страница 6: ...3 Factory Programming Software 7 4 Bit Error Rate BER Software 7 5 Test Alignment Software 7 6 Network Management Software 7 6 1 Installation 7 6 2 Operation within a network 7 6 3 Additional Feature...

Страница 7: ...talled and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interferen...

Страница 8: ...duplex modem with programmable speeds up to 9600bps 1 3 OVERVIEW 1 3 1 RADIO FREQUENCY RF SECTION The ART employs separate receiver and transmitter modules connected to a common microprocessor and int...

Страница 9: ...costs Further details can be obtained from the sales office 1 3 7 CONTINUOUS DEVELOPMENT The ART series has been designed with continuous development in mind and with less than one third of the code...

Страница 10: ...2 External Power Save Mode In the external mode the ON OFF function of the modem is controlled by the host via the DTR line 1 7 3 Time Scheduling using the RTC The ART contains an embedded Real Time...

Страница 11: ...addressed thereby ensuring low power operation At the time of writing this manual a full range of analogue and digital I O modules are under development a list of them are in the specification sectio...

Страница 12: ...radio link which may include repeaters or store forward stations the route information is not stored but is passed in the dial up command in the form of a telephone number once the link is established...

Страница 13: ...s the outstation s receiver and transmitter to be frequency locked onto the base station s frequency and automatically re aligned thereby minimising the effects of long term drift ageing 1 22 TX TIME...

Страница 14: ...lignment when used in conjunction with suitable test equipment 1 24 4 Network Management Software Network Management software has been designed to enable system operation and performance to be monitor...

Страница 15: ...Commercial In Confidence 15 SPECIFICATIONS 2...

Страница 16: ...ation Single frequency simplex Two frequency simplex semi duplex Full duplex as standard Store and Forward and Repeater modes available to custom order Power Requirements 9 6V 15VDC Negative Ground 12...

Страница 17: ...RT 5Watt 50mW 5Watts PC programmable Output Impedance 50 ohms Duty Cycle 50 without additional heat sinking Time Out Timer Programmable 0 255 Seconds Modulation Internal via Modem FFSK GMSK 4 level FS...

Страница 18: ...38400bps Interface Selectable RS232 or 5V TTL plus inverted non inverted Parity Programmable odd Even or None Stop bits Programmable 1 or 2 Data Bits Programmable 7 or 8 Synchronous Async Programmabl...

Страница 19: ...for use under MPT1411 where a licence is required and the output power is normally stated on the licence the maximum power output of the ART is approximately 5Watts BS2011 The unit complies with the...

Страница 20: ...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 45...

Страница 21: ...463 69375 57 458 20625 463 70625 58 458 21875 463 71875 59 458 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 45...

Страница 22: ...50 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...

Страница 23: ...igital I O 2 12bit Analogue Inputs 2 12bit Analogue Outputs ART780I2C Protocol converter to Modbus Canbus Device net etc ART781 2 x RS232 485 to I2C Bus converter ART782GPS module ART790Duplicated con...

Страница 24: ...Commercial In Confidence 24 OPERATION INTERFACE3 3 1 EXPLODED VIEW...

Страница 25: ...control interface board transmitter module receiver module and LED board The view also shows the internal links JP1 JP5 JP11 JP12 that are set during production Normally once the equipment is deploye...

Страница 26: ...ith the correct parts the conversion from one to the other takes only a few minutes 3 2 3 COAX CONFIGURATIONS For two antenna operation individual coaxes from the receiver and the transmitter module c...

Страница 27: ...in the products memory and only pass on messages when there is match However this will require special software 3 3 2 STORE FORWARD 3 3 2 1 Single Unit Operation For single frequency operation incomi...

Страница 28: ...he other unit s transmitter The advantages are the receivers in both directions are always active and so either direction may initiate a call and different antennas for each radio can be used to suite...

Страница 29: ...wnloaded and interchanged as required 3 6 3 Remote firmware download module The programmable parameters of the radio are stored in EEPROM and can be changed via the serial port or over the air However...

Страница 30: ...ll RS232 or 5V TTL signal levels either mode can be run true or inverted these modes are selected by links on the processor pcb which are normally specified by the client and configured prior to despa...

Страница 31: ...e software DTR shutdown option which causes the processor to shut down all the radio circuits while DTR is inactive For lowest current consumption both options must be enabled 3 8 SERIAL PORT PIN CONN...

Страница 32: ...way pluggable terminal block is provided for the connection of external audio signals these are connected to 600 ohm isolating transformers inside the unit The connection details are marked on the fro...

Страница 33: ...f the set up program The external RX audio is optionally muted in the absence of a carrier The external audio input and output is via isolating transformers and so will couple directly to almost any 6...

Страница 34: ...ate has elapsed It is important to note that since transmission ceases as soon as a two character delay in the incoming data stream is seen data characters in a message must be presented in a continuo...

Страница 35: ...60ms 600 40ms 1200 40ms 2400 40ms 4800 20ms 9600 20ms For a two frequency simplex Semi duplex or a duplex channel the TX RX synthesisers remain loaded and hence there is only the TX rise time to cons...

Страница 36: ...1 3ms 9ms tlid Duration of synchronisation transmission lead in delay Table B Table B trbyte Duration of 1 byte at radio signal baud rate Table C Table C tmdel Modem decode latency Table D Table D TAB...

Страница 37: ...pping of the message tail The time thold is composed of a fixed 2 5ms period plus the programmable value LOD lead out delay LOD is normally set to zero After the time trxrdy has expired the radio is r...

Страница 38: ...ronous mode NRZ encoding is used where a one tone represents a binary one and a zero tone a binary zero whilst each character consists of bits of equal duration defined by the baud rate the time betwe...

Страница 39: ...y be reset by powering the radio off 3 19 POWER SAVE MODE The ART is equipped with an internal and external power save mode These are outlined below 1 The internal power save facility In this mode the...

Страница 40: ...ASUREMENT Within the ART is a thermistor which in turn is connected to an A D on the processor This is used to measure the internal temperature of the module and to compensate for temperature changes...

Страница 41: ...Commercial In Confidence 41 INSTALLATION4...

Страница 42: ...The ART Series is available in either 10mW 1Watt or 20mW 5Watts which requires a supply current of 1Amp and 2 5Amps respectively Under no circumstances should the output of the supply rise above 16VD...

Страница 43: ...e distance Unity 0 5Mtrs 3dB 0 7Mtrs 6dB 1 0Mtrs 8dB 1 3Mtrs 10db 1 6Mtrs 12db 2 0Mtrs 4 5 ANTENNAS COAX FEEDERS PERIPHERALS 4 5 1 ANTENNAS Apart from the radio modem the antenna is probably the most...

Страница 44: ...n be produced in different sizes with various radiation patterns to suit the application Depending on the construction and radiation pattern the gain is usually between 3dB to 3dB Their use is very po...

Страница 45: ...47dB 1 79dB 4 5 11 COAX CONNECTORS 50 Ohm coax connectors of a good quality should be used termination must be in accordance with the manufacturer s specification any special tools required to termina...

Страница 46: ...65 67 or 68 is required then an additional enclosure will be required details of suitable enclosures are covered in the following pages 4 6 1 ART DIMENSIONS TX RX RX ANTENNA 12V LINE IN LINE OUT RS232...

Страница 47: ...Commercial In Confidence 47 4 6 2 ART MOUNTING The ART Series can be DIN rail mounted or panel mounted with the optional mounting bracket...

Страница 48: ...ure the coax antenna cable can either be brought out via a suitable gland or via the N type adapter kit shown above For IP68 installations please consult the office for different enclosures 4 6 4 WALL...

Страница 49: ...idence 49 PROTOCOLS APPLICATIONS5 5 0 PROTOCOLS APPLICATIONS With the large available space in the ART s flash memory we hope to be able to develop a range of PC selectable protocols to suit many diff...

Страница 50: ...RY Commands are not case sensitive when entered from a keyboard the backspace key may be used to delete errors Every command except the escape code default must begin with the AT prefix and be termina...

Страница 51: ...urned for most AT commands and can be numeric suitable for automated operation or verbal suited for keyboard operation the value of n determines the mode if 0 numeric mode is set if 1 verbal mode is s...

Страница 52: ...to set up a link once the link is established DCD is raised and the host is informed by the returned AT error code that it may ask the radio to enter transparent mode when this is done the host may c...

Страница 53: ...ormation is sent no reply is required to this message the next message expected is a link fail or link established message originating from the final destination radio When received the link establish...

Страница 54: ...nits is used as timeout for the following 1 receipt of a routing message following acknowledgement of a wake up call 2 receipt of a link establishment message from a down link radio when in relay mode...

Страница 55: ...at the radio requires an additional 20ms to initialise before starting this timer and also that the awake time is terminated 30ms early if no carrier and data signal are detected The minimum recommend...

Страница 56: ...upplied disc in the drive and type A4P Note hard disc users may wish to run the programme from hard disc to do this copy the files named A4P EXE RP CFG and DEFAULTS DAT to the appropriate directory an...

Страница 57: ...Menu screen 6 7 2 VERSION NUMBER COMPATIBILITY MESSAGE If new fields are added or changes are made to the PC program the version number changes but in most cases a new program will program older radio...

Страница 58: ...from the main menu that will allow the user to enter the unit s hard link configuration and add notes if required The file has defaults but these can be over typed and changed as required The print co...

Страница 59: ...ed data is correct press the RETURN key to enter If you want to change the data once it s been entered just move the cursor to the desired field and press RETURN You can then repeat the operation 6 8...

Страница 60: ...ECTION MODE for more detail 6 8 5 2 Channel Increments This option sets the channel spacing required in INCREMENTAL channel selection mode it is suppressed when the mode is set to DISCRETE See the sec...

Страница 61: ...ASCII characters in the modem s memory 6 8 11 LOCKOUT TIME MODE Selectable either resetable or cumulative 6 8 12 LOCKOUT TIME Selects the transmit timeout timer period 0 255 seconds in one second ste...

Страница 62: ...either 1 or 2 6 9 5 FFSK TONE SET Selects either Bell 202 or V23 mode 2 Bell 202 tones should be selected if possible since their wider separation yields better performance V23 tones however are more...

Страница 63: ...ms steps 6 9 15 LEAD OUT DELAY Selects the time the transmitter remains up after the data has been sent Used sometimes to give a finite quiet pause after the data has been sent for more detail see the...

Страница 64: ...ed for an entry 6 10 5 NEXT PREVIOUS CHANNEL By pressing the Enter key the next or previous channel is displayed 6 10 6 EDITING CHANNEL Press the Enter key and then use the Arrow keys to select the re...

Страница 65: ...VIATION Using the up down arrow keys the peak deviation level is set for the required channel spacing 6 11 6 INTERNAL MOD LEVEL The internal modulation level adjustment sets the normal modulation leve...

Страница 66: ...Commercial In Confidence 66 SOFTWARE ANCILLARY ITEMS 7 7 1 PC SOFTWARE...

Страница 67: ...in both directions and provide performance data of the link at various RF levels with different baud rates 7 6 2 OPERATION WITHIN THE NETWORK Once the network is operational the software can be used t...

Страница 68: ...2VDC 3 Amps with backup battery charging and fault reporting via the I2C bus 7 8 2 RF POWER AMPLIFIERS ART400PA 10 UHF 5Watt to 10Watt RF power amplifier with built in VSWR facility that measures Forw...

Страница 69: ...nal Solid State Antenna Switch Lightning Arrester with N Connectors Lightening Arrester with BNC Connectors 7 10 MANUALS Programming installation and operations manual 7 11 BACKUP BATTERY PACKS Full r...

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