TR2M

TR2M RADIOMETRIX | Alldatasheet

Document overview

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Technical content

Features

/square4 433MHz version conforms to EN 300 220-3 and EN 301 489-3 458MHz version to MPT 1329 (UK specs). /square4 Any 5MHz band module from 420MHz to 480MHz available as factory tuned custom variant /square4 High performance double superhet, 128 channel PLL Synthesizer with TCXO /square4 Data rates up to 5 kbps for standard module /square4 Usable range over 1km (with 100mW variant) /square4 Fully screened /square4 Feature-rich interface (RSSI, automatic noise squelch, analogue and digital baseband) /square4 Incorporates a 1200baud dumb modem /square4 User configurable via RS232 interface /square4 Low power requirements

Applications

/square4 Handheld terminals /square4 Heavy vehicle/machine remote controls /square4 EPOS equipment, barcode scanners /square4 Data loggers /square4 Industrial telemetry and telecommand /square4 In-building environmental monitoring and control /square4 High-end security and fire alarms /square4 Vehicle data up/download Technical Summary /square4 Operating frequency: 458.5-459.1MHz or 433.05-434.79MHz /square4 Custom variants from 420MHz to 480MHz on any 5MHz band /square4 23 channels in 458MHz band, 69 channels in 433MHz band (128 channels max.) /square4 Transmit power: +20dBm (100mW) nominal /square4 Supply range: 4.5V - 16V /square4 Current consumption: 110mA transmit, 27mA receive /square4 Data bit rate: 5kbps max. (standard module) /square4 Receiver sensitivity: -118dBm (for 12 dB SINAD) /square4 Size: 59 x 38 x 10mm Evaluation platforms : NBEK + xx2M Series carrier The TR2M transceiver module offers a low power, reliable data link in an industry- standard pin out and footprint. This m akes the TR2M ideally suited to those low power applications where existing wideband modules have insufficient range, or where multi- channel operation is needed. Two versions are available, covering the 458.5- 459.1MHz UK band (at 100mW) and the European 433.05-434.79MHz band (at 10mW). Figure 1: TR2I-433-5 transceiver Narrow Band FM Multi -channel UHF Transceiver Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com Issue 2, 31 March 2015 TR2M

Radiometrix Ltd TR2M Data Sheet page 2 Figure 2: TR2M block diagram

Radiometrix Ltd TR2M Data Sheet page 3 59mm 3.1mm 8.9 mm A CB 3 8 .5m m 2.7m m 3 3 m m 53.3mm Unit height 10mm A: 1 Vcc A: 2 Gnd B: 1 RF Gnd B: 2 RF in B: 3 RF Gnd C: 1 C: 2 TXD (MOD NC) C: 3 AF in (MOD NC) C: 4 RSSI C: 5 SQF (MOD NC) C: 6 AF out C: 7 RXD (MOD NC) C: 8 +4.4V out C: 9 0V C: 10 PGM C: 11 P1 (MOD TXD) C: 12 P2 (MOD RXD) C: 13 P3 (MOD NC) TXE (MOD TX_ON) Squelch adj . Input gain . Figure 3: TR2M Footprint (Top) view Pin Description - TR2M Pins Name Function A1 Vcc 4.5V-16V A2 GND Ground B1 RF GND RF ground B2 RF To the antenna B3 RF GND RF ground C1 TXE (MOD TX_ON) Transmitter Enable. Low = ON, Open = RX mode. Internal 10k Ω pull-up to C2 TXD (MOD NC) DC coupled digital data input for 3 -12V CMOS logic. Leave open if unused C3 AF in (MOD NC) AC coupled Analogue Input Limit to 1V pk-pk ±10% to keep distortion <1.5% and peak deviation >2.5kHz C4 RSSI DC level between 0.5V and 2.5V. 60dB dynami c range C5 SQF (MOD NC) Noise operated carrier detect. Open collector. ON/low = no signal C6 AF out 200mV pk-pk audio. DC coupled, approx 1V bias. Muted by squelch C7 RXD (MOD NC) Open collector output of data slicer suitable for Biphase codes C8 +4.4V out Regulated DC supply. 75mA max. drain. Present if unit is powered C9 0V Ground C10 PGM Serial programming/configuration input at R S232 level C11 P1 (MOD TXD) C12 P2 (MOD RXD) C13 P3 (MOD NC) Parallel frequency select inputs. Inverted logic, internal 10k Ω pullups to 4V Notes: 1. Carrier detect on TR2M mutes the AF Out and RXD outputs. It can be factory disabled. 2. All the open collector outputs must be connected to Vcc/+4.4V out via a pull-up resistor. 3. The software incorporates a 1200baud dumb modem, compatible with that implemented in TX2M, RX2M radios (I1200 tones and format) 4. With 1200baud modem mode enabled, parallel selec tion of channel is unavailable as the P1-P3 lines are used for modem input/output operations. 5. PGM and MOD TXD (pin 10 and 11) tolerate true ±R S232 levels. No buffering is required.

Radiometrix Ltd TR2M Data Sheet page 4 Figure 4: TR2M interfaced to host microcontroller and serial port for configuration TR2M can be directly interfaced to a host microcont roller which can generally be powered by the regula ted +4.4V output on pin 8 of TR2M. Three I/O pins on th e microcontroller port can be assigned to select th e first 8 channels on frequency table of the appropriate ba nd for which the module is configured by pulling th e P1- P3 pins low. Channel select pins of TR2M have inter nal pull-up to 4V supply rail, hence channel select ion operate on inverted logic. Channel P3:P2:P1 433MHz band 458MHz band 0 111 433.050 458.525 1 110 433.075 458.550 2 101 433.100 458.575 3 100 433.125 458.600 4 011 433.150 458.625 5 010 433.175 458.650 6 001 433.200 458.675 7 000 433.225 458.700 Digital Received Data Output (RXD) pin is an open c ollector output, which should be pulled-up to requi red voltage swing level (e.g. +4.4V or Vcc). TR2M has an automatic noise squelching function whi ch is activated when there is not any RF signal at detectable level on the channel or if the non-coher ent noise like interference level is high enough to block any weak RF signal from being received. SQF is prov ided as an open-collector output for monitoring whi ch should be pulled-up to required voltage swing level . SQF output will jump to pull-up voltage level if received RF signal level at the RF In/Out pin of the module is about 3dB below the level required to produce 12 dB SINAD level on demodulated AF Output signal. SQF pi n can be connected to an LED to act as a Carrier Detect indicator. Pull-up resistor value should be reduced (e.g. 1k Ω ) according to the current requirement to produce satisfactory brightness on the LED used. TR2M can be configured using any PC/Laptop/PDA havi ng a serial port and modem/terminal program. TXD (pin 3) of DB9M connector can be directly wired to PGM (pin C10) of the TR2M and SGN (pin 5) of DB9M connector should be either connected to common ground or pin C9 of the TR2M. The whole frequency/channel table is user reconfigu rable to 128 channels within 5MHz band of supplied frequency subject to regulatory band limits. Serial Channel Selection via PGM pin gives access to the whole of regulatory band allocation for 433.05MHz-434.790 MHz (69 channels) or 458.525MHz-458.925MHz (23 channels). TXE (MOD TX_ON) (C1) TXD (MOD NC) (C2) AF in (MOD NC) (C3) RSSI (C4) SQF (MOD NC) (C5) AF out (C6) RXD (MOD NC) (C7) +4.4V out (C8) GND (C9) PGM (C10) P1 (MOD TXD) (C11) P2 (MOD RXD) (C12) P3 (MOD NC) (13) 1kΩ 10k Ω 100nF Carrier Detect Host M icrocontroller TR2M -43 3 -5 1

3 TXD

Radiometrix Ltd TR2M Data Sheet page 5 Received Signal Strength 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 RF Level (dBm) RSSI output (V) Figure 5: RSSI voltage variation with respect to RF level at TR2M If the microcontroller has a built-in Analogue to D igital Converter (ADC), the Received Signal Strengt h Indicator (RSSI) output voltage level can be read b y the microcontroller to estimate its distance from transmitting TR2M unit or identify areas of weak signal reception. RSSI can also be used to make a decision to switch to the second antenna in fixed installations within building where the probability of null-spots are higher. Regulatory Restrictions There is a generic 10% duty cycle restriction on th e 433MHz ISM band through out European countries wi th few exceptions. Annex 1 Band E, Band E2 of European Radio Communications Committee (ERC) Recommendation 70-03 dated February 2004 specifies the following: 433.050MHz (Ch0) 434.050MHz (Ch40) 433.775MHz (Ch69 ) 10mW ERP, 10% duty cycle for Channelised Narrow Band and Wide Band usage 10mW ERP, 100% duty cycle for <25kHz Channelised Narrow Band usage 433.05MHz 434.040MHz 434.79MHz 433.050-434.790 MHz, Non Specific Short Range Devic e, band is primarily intended for Telemetry, Telecommand, Alarms, Data in general and other simi lar applications. Audio and Voice signals should be avoided in the band.

Radiometrix Ltd TR2M Data Sheet page 6 TR2M serial configuration commands 2400 baud RS232. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits, No flow control SINGLE nnnnn Set value of N for single channel operation GOCHAN xx Serial select of channel xx (0 to 127) LOADMX xx Set highest permitted (serial selected) channel xx (others default to ch0) LOAD aa nnnnn Set value of N for channel aa (cha nnels 0 to 15) LOADTB nnnnn Set value of N for channel 16 (chan nels 17 to 127 then in sequence) RVALUE rrrr Enter value for R register SETPAR Channel selected by 3 bit parallel input (0 to 7). Disable modem SETSER Channel selected by most recent 'gochan' ope ration SETMOD Enable internal modem. Frequency selected by most recent 'gochan' or 'single' GOTEST 250Hz test tone transmission OFFSET ooo Set receive frequency offset (for 25KHz this is 1800) <cr> Process entry / Clear all buffers xx = channel number from 00 to 127 aa = two digit channel number from 00 to 15 nnnnn = synthesizer N register value, (up to 65535) rrrr = synthesizer R register value, (up to 16383) 000 = frequency offset 17322 kHz 25 MHz 050 .433 f fN cing Channelspa RF TX === kHz MHz f fR cing channelspa TCXO 13 == , So R=520 RX kHz 25 MHz 45 f IF OFFSET cing channelspa == = 1800 Channel Number 433MHz band N value for TX 458MHz band N value for TX 0 433.050 /LOAD00 17322 458.525 /LOAD00 18341 1 433.075 /LOAD01 17323 458.550 /LOAD01 18342 2 433.100 /LOAD02 17324 458.575 /LOAD02 18343 3 433.125 /LOAD03 17325 458.600 /LOAD03 18344 4 433.150 /LOAD04 17326 458.625 /LOAD04 18345 5 433.175 /LOAD05 17327 458.650 /LOAD05 18346 6 433.200 /LOAD06 17328 458.675 /LOAD06 18347 7 433.225 /LOAD07 17329 458.700 /LOAD07 18348 8 433.250 /LOAD08 17330 458.725 /LOAD08 18349 9 433.275 /LOAD09 17331 458.750 /LOAD09 18350 10 433.300 /LOAD10 17332 458.775 /LOAD10 18351 11 433.325 /LOAD11 17333 458.800 /LOAD11 18352 12 433.350 /LOAD12 17334 458.825 /LOAD12 18353 13 433.375 /LOAD13 17335 458.850 /LOAD13 18354 14 433.400 /LOAD14 17336 458.875 /LOAD14 18355 15 433.425 /LOAD15 17337 458.900 /LOAD15 18356 16 433.450 /LOADTB 17338 458.925 /LOADTB 18357 F max 434.775 /LOADMX 69 459.100 /LOADMX 23 433MHz Band 458MHz Band 25kHz 433.05 434.79 459.1 461.675 Figure 6: Maximum regulatory and user accessible sequential channels

Radiometrix Ltd TR2M Data Sheet page 7 Notes: 1. A pause of at least 50ms must be allowed between command strings (EEPROM programming time) SINGLE mode does not store the N value in EEPROM. Therefore the unit is inoperative after a power down until either another valid SINGLE command is received, or mode is changed by a GOCHAN, SETPAR or SETSER command. SINGLE mode is intended for frequency agile applications. 2. /SETPAR command should be issued at the end of c hannel programming to put the module back into parallel frequency select mode 3. In 458MHz band, channel 12 (458.825MHz) and chan nel 15 (458.900MHz) are allocated specifically for fixed alarm and radio keys/vehicle paging applications respectively and should not be used for general purpose applications. 4. User can modify the frequency table of 128 chann els to any desired frequency by changing N, R values of synthesizer within ±2.5MHz of factory set Channel 0 frequency subject to the Radio Regulatory Band Allocation in the country of intended use. 5. All other frequency, power, analogue input gain and automatic noise squelching adjustment will be treated as custom variants of the module to be set by factory. Go to Ch69 (434.775MHz) highest channel on 433MHz band Go to Channel 70 will wrap back to Channel 0 (433.05MHz) Increase maximum allowed Channel to 89 (435.275MHz) Serially select Channel 6 (433.200MHz) Enable Parallel Channel Selection using P1:P2:P3 Go to Channel 88 (435.250MHz) outside legal 433MHz band Go to new highest Channel 89 (435.275MHz) Set legal highest Channel as 69 (434.775MHz) below 434.790MHz Go to Channel Selected by P1:P2:P3 Set Synthesiser N value to 17332 to operate on 433.300MHz Return to Parallel Frequency Selection Change Channel 3 N value to 17338 to operate on 433.450MHz) Serially select newly set Channel 3 frequency of 433.450MHz Set the Ch3 back to factory set N value 17325 (433.125MHz) Modulate with 250Hz test tone to visualise peak FM deviation Return to Parallel Frequency Selection will not work Module should be power-reset to exit GOTEST command Go to last Serially Selected Channel 3 (433.125MHz) Change Synth. R value to 1300 to get multiple of 10kHz spacing which allows Ch0 N value to be changed to 43403 (434.030MHz) Go to newly set Ch0 (434.030MHz) if none of P1-P3 are pulled low Change Ch1 N to 43410 (434.100MHz) with non-uniform spacing Select newly set Ch1 (434.100MHz) if only P1 is pulled low Serially select newly set Channel 1 (434.100MHz) Change R value to factory set 25kHz channel spacing Change Channel 0 N value to factory set 17322 (433.050MHz) Change Channel 0 N value to factory set 17323 (433.075MHz) Go to factory set Channel 0 frequency of 433.050MHz Go to factory set Ch0 or Ch1 Change frequency to descending order with Ch0=434.775MHz with Ch1=434.750MHz to use at 100% duty cycle Serially select newly set Ch1 frequency of 434.750MHz Enable 1200 baud Modem. (Disables Parallel Channel Selection)

Radiometrix Ltd TR2M Data Sheet page 8 Pin description of TR2M with Modem mode selected The 'modem' mentioned is a 1200 baud RS232 semi-intelligent unit (Transmit keyed when valid serial data is present, so no separate TX control needed. Coding in the datastream also permits the receiver to ignore noise and only output valid serial data). This is a half duplex unit, so collisions between transmitted and received packets must be dealt with by the user. Pin Name Function 1 MOD TX_ON Open = normal modem operation. Low = co nstant TX (for test). 10k pullup to 4V

2 MOD NC Leave open

3 MOD NC Leave open

4 RSSI DC level between 0.5V and 2.5V. 60dB dynamic range

5 MOD NC Leave open

6 AF out Modem tones or noise present

7 NC Leave open

8 +4.4V out Regulated DC supply. 75mA max. drain. P resent if unit is powered 9 0V Ground

10 PGM Serial programming/configuration input at RS 232 level

11 MOD TXD RS232 data input (true). 10k pullup to 4 V

12 MOD RXD Inverted RS232 data out (to inverting bu ffer like MAX232)

13 MOD NC Leave open

TR2Ms on both ends should be configured to required operating frequency using GOCHAN command before starting to use the internal 1200 baud modem, because the P1-P3 pins will be used as Modem Data pins and the modem will operate on the last serially selected channel after SETMOD command is used to enable the Modem. TXE (MOD TX_ON) (C1) TXD (MOD NC) (C2) AF in (MOD NC) (C3) RSSI (C4) SQF (MOD NC) (C5) AF out (C6) RXD (MOD NC) (C7) +4.4V out (C8) GND (C9) PGM (C10) P1 (MOD TXD) (C11) P2 (MOD RXD) (C12) P3 (MOD NC) (13) TR2M -43 3 -5 Figure 7: TR2M interfaced to PC serial port in modem mode Note: Baud rate used for Modem is half that of used for serial configuration. Attached RS232 devices should be set with the following: 1200bps, 8 Data bits, No Parity, 1/2 stop bits, no flow control TXD (Pin 3) of a Serial Port can be switched from PGM (Pin C10) to MOD TXD (Pin C11) with no RS232 driver in between. However, MOD RXD (Pin C12) requires an RS232 line driver before it can be connected to RXD (pin 2) of a serial port. Some of the RS232 line drivers can be powered from the regulated +4.4V out (Pin C8).

Radiometrix Ltd TR2M Data Sheet page 9 Condensed specifications Frequency 458.5-459.1MHz or 433-434MHz (any 3MHz band from 420-475MHz) Frequency stability +/- 1.5kHz Channel spacing 25kHz (12.5kHz by special order) Number of channels 128 channels controlled via RS232 interface (8 parallel selected) Supply voltage 4.5-16V Current 110mA nominal transmit 27mA receive Operating temperature -10 to +60 οC (Storage -30 to +70 οC) Size 59 x 38 x 10 mm Spurious radiations Compliant with ETSI EN 300 220- 3 and EN 301 489-3 Interface user 13pin 0.1" pitch molex Power 2pin 0.1" pitch molex RF 3pin 0.1" pitch molex Recommended PCB hole size 1.2mm (min.) Intended approval ETSI Radio standard EN 300 220-3 and EMC standard EN 301 489-3 Transmitter Output power +20dBm (100mW) ±1dB (factory adjustabl e 1-100mW) TX on switching time 50 ms Modulation type FM, FSK (F1D, F3D) TX modulation bandwidth DC – 3kHz Adjacent channel TX power <-37dBm (<200nW) TX spurii better than -40dBm Inputs analogue, data (CMOS/TTL compatible) Receiver Sensitivity -118dBm for 12 dB SINAD (-115dBm for 12 dB SINAD for 12k5 variant) adjacent channel -910kHz 65dB 69dB ½ IF >80dB image / spurious >80dB blocking 86dB or better Outputs RSSI, carrier detect, audio, data Power on to valid audio 28ms (no noise mute) Power on to valid audio 45ms (with noise mute) Power on to stable data out (50:50 mark / space) 50ms (with or without mute) Notes : 1. The data slicer cannot be depended upon for data waveform frequencies below 250Hz 2. When RX is on and a transmitter keys up, again a 50ms period is required to stabilise data output mark/space. i.e. allow at least 50ms of preamble

231 Kenton Lane

Harrow, Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 sales@radiometrix.com www.radiometrix.com Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the right to make changes or improvements in the design, specification or manufacture of its subassembly products without notice. Radiometrix Ltd does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. This data sheet neither states nor implies warranty of any kind, including fitness for any particular application. These radio devices may be subject to radio interference and may not function as intended if interference is present. We do NOT recommend their use for life critical applications. The Intrastat commodity code for all our modules is: 8542 6000. R&TTE Directive After 7 April 2001 the manufacturer can only place finished product on the market under the provisions of the R&TTE Directive. Equipment within the scope of the R&TTE Directive may demonstrate compliance to the essential requirements specified in Article 3 of the Directive, as appropriate to the particular equipment. Further details are available on The Office of Communications (Ofcom) web site: http://www.ofcom.org.uk/radiocomms/ifi/ Information Requests Ofcom Riverside House 2a Southwark Bridge Road London SE1 9HA Tel: +44 (0)845 456 3000 or 020 7981 3040 Fax: +44 (0)20 7783 4033 information.requests@ofcom.org.uk European Radiocommunications Office (ERO) Peblingehus Nansensgade 19 DK 1366 Copenhagen Tel. +45 33896300 Fax +45 33896330 ero@ero.dk www.ero.dk