TX6000 RFSOLUTIONS | Alldatasheet

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DS006-2 Oct 02  2003 REG No 277 4001, ENGLAND. Page 1 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000

DESCRIPTION

The R.F. Solutions 458MHz FM Transmitter and receivers are compact ‘credit card’ sized crystal controlled modules, capable of transmitting data up to 20 kilometres in direct line of sight, up to 1-3km within buildings. These modules are crystal controlled for frequency accuracy and are supplied tuned to one of 15 available channel frequencies. The units are suitable for general purpose telemetry applications where small size and high data rates are needed. The module can transmit digital or analogue (GMSK, or FSK) data at up to 9600baud rate. Supplied as a completed module, no modification or pre tuning is necessary. Connections are by gold plated pins on the module base, enabling the module to be socketed for interchangeability (e.g. for other frequency channels). The radios have been designed to meet ETSI300-220, EN50081-1, EN50082-1 EMC directive and are DTI approved under MPT1329 for licence free use. TYPICAL OPERATION

FEATURES

  • Miniature Crystal Module
  • 500mw RF Output Power
  • Very High Frequency Stability
  • Up To 20km Range (Direct Line Of Sight)
  • 1-3km Range (Within Buildings)
  • 15 Single Channel Versions Available
  • Wide Tx Voltage Range 6.5 - 9v Dc
  • Rx - Single Supply Voltage 5vdc
  • Low Power Consumption
  • Fast Response Time
  • Standard TTL/CMOS Interface
  • Mpt1329 Licence Exempt HHoosstt DDaattaa SSoouurrccee TTXX66000000 RRXX66000000 HHoosstt DDaattaa SSoouurrccee

DS006-2 Oct 02  2003 REG No 277 4001, ENGLAND. Page 2 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000 Frequency of Operation The TX/RX6000 modules operate on the 458.500MHz to 458.950MHz telemetry band. There are 15 channels within this band. The TX/RX6000 modules are supplied at one of these specific channel frequency bands. When ordering the modules, the exact frequency must be stated. Ch No (Hex) Frequency (MHz) 02 458.525 04 458.550 06 458.575 08 458.600 0A 458.625 0C 458.650 0E 458.675 10 458.700 12 458.725 14 458.750 16 458.775 18 458.800 1C 458.850 1E 458.875 20 458.900 22 458.925 Radio Propagation With any radio system, there are a number of factors affecting the system performance. These are

  • Transmitter power output
  • Height of transmitter and receiver antenna
  • Length of feeder cables to the antenna
  • Type and efficiency of antenna
  • Surrounding topography
  • The weather Antennas The types of antenna we recommend for this Modem are; Helical : The smallest, most compact antenna, has a gain of <1, designed for short ranges up to 2km 1/4 Wave Flexi : General purpose antenna with gain <1 gives slightly better range than Helical Yagi : A highly directional antenna (Looks similar to a standard TV aerial). Typically has a gain of +3dB. The output power of a transmitter connected to a Yagi must be reduced in order to comply to the DTI specifications. This does however have the advantage of reducing the power consumed by the transmitter to achieve the same range. By connecting a Yagi to a receiver, the system range may be extended to 20km. Note : Try to keep the feed wire to the antenna as short as possible, If the antenna is to be mounted some distance away low loss 50Ω co-axial cable should be used as the interconnection. Power Supply It is not advisable to use a switched mode power supply, either to drive the TX6000/RX600 module or within close proximity to it. Switched mode power supplies can produce high energy radio frequencies over a broad spectrum potentially causing interference with the operation of the Modem.

DS006-2 Oct 02  2003 REG No 277 4001, ENGLAND. Page 3 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000 Transmitter Connections : Pins on underside of Module Pin Description Direction

1 Ground Input

2 Modulation Input 500mVpk-pk +ve freq deviation Input

3 Modulation Input 500mVpk-pk -ve freq deviation Input

4 Digital Data input (TTL) Input

5 Switched +5V (supply to Rx when used as transceiver) Output

6 Test Output

7 Regulated +5V Output

8 Transmitter ON

(Connect to Common to start the Transmitter) Input 9 Supply Voltage to Module (7.2 - 9V) Input

10 Receiver RF Output (for use in transceiver) Output

11 Ground Input

12 Antenna Output

Receiver Connections : Pins on underside of Module Pin Description Direction

2 Receiver Signal Strength Indicator (RSSI) 0-2V Log Range Output

3 Demodulated Output Output

4 Test (unfiltered modulated output) Output

5 +5V supply to Local Oscillator and RF Amplifier Input

6 Digital Data Ouptut Output

7 +5V supply to IF and LF Amplifiers Input

12 Antenna Antenna

The receiver may be put into power save mode by removing the 5V supply to pin 5. The RSSI will still indicate a valid signal. After re-applying power to pin5 the data output will be valid within <5msecs. Mechanical Details 1122 1111 1100 50.8 3366 12.5mm NOTES Pins on a 2.54mm pitch Pins are 2.6 x DIA0.51mm in Gold Plate Pins 8, 9, 10, 11 are on the transmitter only 44..00 22..88 TToopp VViieeww ((ppiinnss oonn uunnddeerrssiiddee)) 44..00 1155..00 2255..44 AAllll DDiimmeennssiioonnss iinn mmmm 22..55

DS006-2 Oct 02  2003 REG No 277 4001, ENGLAND. Page 4 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000 Circuit Connections Transceiver Application Connections 1122 1111 1100 1122 1111 1100 ++77VV ++77VV SSuuppppllyy VVoollttaaggee TTrraannssmmiitttteerr OOnn DDiiggiittaall DDaattaa IInn DDiiggiittaall DDaattaa OOuutt RRSSSSII 00VV TTXX oonn DDiiggiittaall DDaattaa IInn 00VV 11KKΩΩ 1122 TTrraannssmmiitttteerr CCoonnnneeccttiioonnss TTrraannssmmiitttteerr CCoonnnneeccttiioonnss RReecceeiivveerr CCoonnnneeccttiioonnss RReecceeiivveerr CCoonnnneeccttiioonnss ++55VV DDiiggiittaall DDaattaa OOuutt RRSSSSII 00VV 00VV 1122 NNoottee TThhiiss lliinnkk ttoo bbee eexxaaccttllyy 110000mmmm ooff CCooaaxxiiaall CCaabbllee WWhheenn aa ttrraannsscceeiivveerr iiss ccoonnffiigguurreedd,, tthhee rreecceeiivveerr mmoodduullee iiss ppllaacceedd iinnttoo ppoowweerr ssaavvee mmooddee aauuttoommaattiiccaallllyy wwhheenn tthhee ttrraannssmmiitttteerr iiss ppoowweerreedd oonn..

DS006-2 Oct 02  2003 REG No 277 4001, ENGLAND. Page 5 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000 ABSOLUTE MAXIMUM RATINGS DIMENSIONS Length = 36, Width = 51, Height = 12.5mm Weight = 30grams TECHNICAL SPECIFICATION Ambient temperature = 25 o Celsius. ELECTRICAL CHARACTERISTICS MIN TYPICAL MAX DIMENSION NOTE Transmission Frequency 458.850 MHz Channels 1 Modulation See Note 2 TRANSMITTER Supply Voltage 7 9 V Supply Current 150 170 200 mA Transmitting Radiated Power 500 mW Start up Time 5 mSecs Data Input (Logic Low) 0 0.2 0.8 V TTL Data Input (Logic High) 3.5 3.8 5 V TTL RECEIVER Supply Voltage 4.7 5 5.3 V Supply Current 15 mA Power Save Supply Current 500 µA Sensitivity -122 dBm Modulation Output 5 Vpk-pk Data Ouput (Logic Low) 0 0.2 0.8 V TTL Data Ouput (Logic High) 3.5 3.8 5 V TTL Notes: 1. There are 15 channels in 5MHz sub-bands. The module is supplied at one fixed frequency. 2. Modulation used is F3D PART No DESCRIPTION TX6000-XXX Transmitter 458MHz XXX = Frequency Channel RX6000-XXX Receiver 458MHz XXX = Frequency Channel For more information or general enquiries, please call; R. F. Solutions Ltd., Unit 3, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England. Tel +44 (0)1273 898 000. Fax +44 (0)1273 480 661. Email sales@rfsolutions.co.uk Web Page http://www.rfsolutions.co.uk RF Solutions is a member of the Low Power Radio Association. Data appears courtesy of Warwick Industrial Electronics Ltd Information contained in this document is believed to be accurate , however no representation or warranty is given and no liabi lity is assumed by R.F. Solutions Ltd. with respect to the accuracy of