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radiometrix ltd tlc2h/rlc2h data sheet page 1 features ? 433mhz version conforms to en 300 220-3 and en 301 489-3 ? high performance double superhet. pll synthesizer with tcxo ? saw front-end filter ? data rates up to 5 kbps for standard module ? usable range over 500m ? fully screened. low profile ? feature-rich interface (rssi, analogue and digital baseband) ? re-programmable via rs232 interface ? low power requirements applications ? handheld terminals ? epos equipment, barcode scanners ? data loggers ? industrial telemetry and telecommand ? in-building environmental monitoring and control ? high-end security and fire alarms ? dgps systems ? vehicle data up/download ? heavy vehicle/machinery controls technical summary ? operating frequency: 433.875-434.650mhz ? any custom frequency on 433mhz ? 435mhz ? 32 channels in 433mhz band ? transmit power: +10dbm (10mw) ? supply range: 3.1 - 15v (transmit), 3.7 ? 15v(receive) ? current consumption: 34ma (transmit), 18ma (receive) ? data bit rate: 5kbps max. (standard module) ? receiver sensitivity: -120dbm (for 12 db sinad) ? serial configuration by inverted rs232 at 3v cmos level uhf narrow band fm low cost multi channel radio modules uhf narrow band fm low cost multi channel radio modules uhf narrow band fm low cost multi channel radio modules uhf narrow band fm low cost multi channel radio modules the tlc2h transmitter rlc2h receive r modules offer a low power, reliable data link in an industry-standard pin ou t and footprint. this makes the tlc2h/rlc2h pair ideally suited to those low power applications where existing wideband modules have insufficient range, or where low cost multi-channel operation is neede d without compromising on r f specification or regulatory requirement. radiometrix hartcran house, 231 kenton lane, harrow, ha3 8rp, england issue 1, 28 september 2006 tlc2h/rlc2h n e w tel: +44 (0) 20 8909 9595, fax: +44 (0) 20 8909 2233 figure 1: rlc2h receiver & tlc2h transmitter
radiometrix ltd tlc2h/rlc2h data sheet page 2 f igure 2: tlc2h block diagram
radiometrix ltd tlc2h/rlc2h data sheet page 3 rf 0v 3mm centre line 26.1mm 4.2mm 36.7mm 8.9mm +vin mod 0v connector pitch: 2.54mm 1 5 3 2mm p4 link (top) 1.5mm pin description ? tlc2h pin name function 1 vcc 3.1 ? 15v dc power supply 2 no pin not present in tlc2h 3 txd dc coupled input for 3v cmos logic. r in =47k ? 4 no pin not present in tlc2h 5 0v ground p0/pgm parallel channel select lsb, bit 0 true logic (0v = low). weak pullup to 3v; serial frequency programming / configuration 1 p1 parallel channel select, bit 1 true logic (0v = low). weak pullup to 3v p2 parallel channel select, bit 2 true logic (0v = low). weak pullup to 3v p3 parallel channel select, bit 3 true logic (0v = low). weak pullup to 3v p4 jumper parallel channel select msb, bit 4 jumper inserted, p4=0 (channel 00 ? channel 15 at 50khz step) jumper clear, p4=1 (channel 16 ? channel 31 at 50khz step) notes: 1. serial programming is by an inverted, cmos logic level, 2400 baud rs232 datastream applied to the p0 pin. 2. parallel channel select is by 4 pin parallel input (lsb selected by a 2mm header, accessed through a hole in the can) 3. channel select inputs have pullups (10k) to 3v internal rail. do not exceed 3v logic levels on this port. 4. transmitter will shutdown if vcc falls below about 2.9v 5. txd: logic low < 1.3v, logic high > 1.7v. txd maximum voltage = 10v figure 3: tlc2h footprint (top view)
radiometrix ltd tlc2h/rlc2h data sheet page 4 figure 4: rlc2h block diagram
radiometrix ltd tlc2h/rlc2h data sheet page 5 pin description ? rlc2h pin name function 1 vcc dc supply (3.7v to 15v, at 18ma). 2 rssi 0.5v-2.5v dc level. 60db dynamic range. 40k ? output impedance 3 0v ground 4 rxd open collector digital data output with internal 47k ? pull-up to vcc 5 af 600mv pk-pk audio. dc coupled, approx 0.8v bias. p0/pgm parallel channel select lsb, bit 0 true logic (0v = low). weak pullup to 3.5v serial frequency programming / configuration 1 p1 parallel channel select, bit 1 true logic (0v = low). weak pullup to 3.5v p2 parallel channel select, bit 2 true logic (0v = low). weak pullup to 3.5v p3 parallel channel select msb, bit 3 true logic (0v = low). weak pullup to 3.5v jumper p4 parallel channel select jumper jumper inserted, p4=0 (channel 00 ? channel 15 at 50khz step) jumper clear, p4=1 (channel 16 ? channel 31 at 50khz step) notes: 1. data recovery circuit used for rxd is not a simple 'average and compare' type. it is a peak sampling quasi-dc coupled design, allowing a greater than usual flexibility in data format. maximum time between data transitions: 250ms 2. serial programming is by a 2400 baud inverted 'rs232' (3v cmos levels) datastream applied to the p0 pin. if connection to a true rs232 port is desired, then a suitable inverting level shifter / buffer (max232 or npn switch transistor) is needed. 3. parallel channel select is by a 4 pin parallel input (msb selected by a 2mm header, accessed through a hole in the can). 3v cmos levels should be used. 4. as supplied the frequency table is thus: ch 0-15 433.875 ? 434.625 mhz (50khz steps) ch 16-31 433.9 - 434.65 mhz (50khz steps) figure 5: rlc2h footprint (top view)
radiometrix ltd tlc2h/rlc2h data sheet page 6 serial interface commands 2400 baud rs232. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits. serial data is sent to the unit on one of the parallel channel select pins (p0). it is very important that the unit does not ?decode? switch bounce in ordinary operation as a command string, or spurious re- writing of the eeprom will result. for this reason the user must send the 16 character string enableserialmode to fully enable the serial command mode before sending any of the command strings listed below. command mode is disabled on power down, or on reception of a # character. gochan aa serially select channel xx, where xx is 0 to 31 load aa nnnnn set value of n register for channel aa, where aa is channels 0 to 31 setpar channel selected by 5 bit parallel inputs (4pins + jumper) setser channel selected by most recent gochan operation rvalue rrrr set value for r register single nnnnn set value of n for single channel operation. n value not stored in eeprom process entry / clear all buffers # disable command mode aa = a two digit channel number from 00 to 31 nnnnn = synthesizer n register value (up to 65535) rrrr = synthesizer r register value (up to 16383) 17355 25 875 . 433 = = = khz mhz f f n cing channelspa rf tx khz mhz f f r cing channelspa tcxo 25 13 = = , so r=520 16499 25 4 . 21 875 . 433 4 . 21 = ? = ? = khz mhz f mhz f n cing channelspa rf rx note : a pause of at least 25ms 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.
radiometrix ltd tlc2h/rlc2h data sheet page 7 tlc2h, rlc2h channels are spaced at 50khz interval into two frequency groups. 50khz spacing between sequential channels minimises adjacent channel interference. p4 jumper link determines which frequency group is selected. channel (jumper p4 inserted) frequency (mhz) channel (jumper p4 clear) frequency (mhz) 0 433.875 16 433.900 1 433.925 17 433.950 2 433.975 18 434.000 3 434.025 19 434.050 4 434.075 20 434.100 5 434.125 21 434.150 6 434.175 22 434.200 7 434.225 23 434.250 8 434.275 24 434.300 9 434.325 25 434.350 10 434.375 26 434.400 11 434.425 27 434.450 12 434.475 28 434.500 13 434.525 29 434.550 14 434.575 30 434.600 15 434.625 31 434.650
radiometrix ltd tlc2h/rlc2h data sheet page 8 condensed specifications frequency 433.875-434.675mhz (custom variants on 433mhz ? 435mhz) peak deviation 3khz frequency stability 1.5khz channel spacing 25khz (12.5khz by special order) number of channels 32 channels selected via rs232 interface or 2 x 16 groups by parallel port operating temperature -10 oc to +60 oc (storage -30 oc to +70 oc) spurious radiations compliant with etsi en 300 220-3 and en 301 489-3 transmitter output power +10dbm (10mw) 1db (1mw or 5mw by special order) tx on switching time 50ms from power up modulation type fsk (f3d) tx modulation bandwidth dc ? 5khz (3v cmos compatible) adjacent channel tx power <-37dbm tx spurious <-45dbm transmitter supply voltage 3.1v ? 15v current 34ma nominal transmit inputs analogue, data (cmos/ttl compatible) size 37 x 27 x 8mm interface user 3pin 0.2" pitch molex channel 4pin 0.1" pitch molex rf 2pin 3mm pitch recommended pcb hole size 1.2mm receiver sensitivity -120dbm for 12 db sinad image / spurious / adjacent channel <-60db blocking <-85db lo re-radiation <-60dbm supply voltage 3.7v ? 15v current 18ma outputs rssi, audio, data size 50 x 30 x 10mm interface user 5pin 0.1" pitch molex channel 4pin 0.1" pitch molex rf 2pin 0.1" pitch molex recommended pcb hole size 1.2mm power on to valid audio 28ms power on to stable data out (50:50 mark / space) 50ms notes: 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
radiometrix ltd tlc2h/rlc2h data sheet page 9 rx received signal strength indicator (rssi) the rlc2h has wide range rssi that measures the strength of an incoming signal over a range of 60db or more. this allows assessment of link quality and available margin and is useful when performing range tests. the output on pin 2 of the module has a standing dc bias of up to 0.4v with no signal, rising to 2.5v at maximum indication (rf input levels of -40dbm and above). ? vmin-max is typically 2v and is largely independent of standing bias variations. output impedance is 40k ? . pin 2 can drive a 100 a meter directly, for simple monitoring. figure 6: rssi level with respect to received rf level at rlc2h antenna pin antenna requirements three types of integral antenna are recommended and approved for use with the module: a) whip this is a wire, rod ,pcb track or combination connected directly to rf pin of the module. optimum total length is 16.4cm (1/4 wave @ 433mhz). keep the open circuit (hot) end well away from metal components to prevent serious de-tuning. whips are ground plane sensitive and will benefit from internal 1/4 wave earthed radial(s) if the product is small and plastic cased b) helical wire coil, connected directly to rf pin, open circuit at other end. this antenna is very efficient given it?s small size (20mm x 4mm dia.). the helical is a high q antenna, trim the wire length or expand the coil for optimum results. the helical de-tunes badly with proximity to other conductive objects. c) loop a loop of pcb track tuned by a fixed or variable capacitor to ground at the 'hot' end and fed from rf pin at a point 20% from the ground end. loops have high immunity to proximity de-tuning. a b c whip helical loop ultimate performance *** ** * easy of design set-up *** ** * size * *** ** immunity proximity effects * ** *** range open ground to similar antenna 500m 200 100
radiometrix ltd tlc2h/rlc2h data sheet page 10 the antenna choice and position directly controls the system range. keep it clear of other metal in the system, particularly the 'hot' end. the best position by far, is sticking out the top of the product. this is often not desirable for practical/ergonomic reasons thus a compromise may need to be reached. if an internal antenna must be used, try to keep it away from other metal components, particularly large ones like transformers, batteries and pcb tracks/earth plane. the space around the antenna is as important as the antenna itself. a. helical antenna b. loop antenna rf c1 c2 c4 c3 rf-gnd c. whip antenna 16.4cm rf 0.5 mm enameled copper wire close wound on 3.2 mm diameter former 433 mhz = 24 turns feed point 15% to 25% of total loop length track width = 1mm 4 to 10 cm inside area wire, rod, pcb-track or a combination of these three 433 mhz = 16.4 cm total from rf pin. 2 rf variants and ordering information part no . description frequency band tlc2h-433-5 transmitter 433.875-434.650mhz RLC2H-433-5 receiver 433.875-434.650mhz other variants can be supplied to individual customer requirements at frequencies from 433mhz to 435mhz and/or optimised for specific data speeds and formats. please consult the sales department for further information. f i g ure 7: antenna t yp es
radiometrix ltd hartcran house 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

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