Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Issue 2, 15 December 2009 Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 TLC2H/RLC2H UHF Narrow Band FM Low Cost multi channel radio modules The TLC2H transmitter RLC2H receiver modules offer a low power, reliable data link in an industry-standard pin out 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 needed without compromising on RF specification or regulatory requirement. Figure 1: RLC2H receiver & TLC2H transmitter Features • • • • • • • • • 315, 433MHz variants conforms to EN 300 220-2 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: 314.600-315.375MHz (USA) 433.875-434.650MHz (Europe) 458.525-458.775MHz (UK) Any custom frequency on 433MHz – 435MHz 32 channels in 315MHz, 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 Radiometrix Ltd TLC2H/RLC2H Data Sheet page 1 Figure 2: TLC2H block diagram Radiometrix Ltd TLC2H/RLC2H Data Sheet page 2 36.7mm P4 Link (top) 2mm RF 26.1mm 1.5mm 0V 4.2mm 8.9mm 1 3mm centre line +Vin 3 MOD 5 0V Connector pitch: 2.54mm Figure 3: TLC2H footprint (top view) Pin description – TLC2H Pin 1 2 3 4 5 P0/PGM P1 P2 P3 Name Vcc No pin TXD No pin 0V Parallel channel select LSB, bit 0 Parallel channel select, bit 1 Parallel channel select, bit 2 Parallel channel select, bit 3 Parallel channel select MSB, bit 4 Function 3.1 – 15V DC power supply Not present in TLC2H DC coupled input for 3V CMOS logic. Rin=47kΩ Not present in TLC2H Ground True logic (0V = low). Weak pullup to 3V; Serial frequency programming / configuration1 True logic (0V = low). Weak pullup to 3V True logic (0V = low). Weak pullup to 3V True logic (0V = low). Weak pullup to 3V P4 Jumper inserted, P4=0 (Channel 00 – Channel 15 at 50kHz step) Jumper 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 Radiometrix Ltd TLC2H/RLC2H Data Sheet page 3 Figure 4: RLC2H block diagram Radiometrix Ltd TLC2H/RLC2H Data Sheet page 4 Figure 5: RLC2H footprint (top view) Pin description – RLC2H Pin 1 2 3 4 5 P0/PGM P1 P2 P3 Jumper P4 Name Vcc RSSI 0V RXD AF Parallel channel select LSB, bit 0 Parallel channel select, bit 1 Parallel channel select, bit 2 Parallel channel select MSB, bit 3 Parallel channel select Jumper Function DC supply (3.7V to 15V, at 18mA). 0.5V-2.5V DC level. 60dB dynamic range. 40kΩ output impedance Ground Open collector digital data output with internal 47kΩ pull-up to Vcc 600mV pk-pk audio. DC coupled, approx 0.8V bias. True logic (0V = low). Weak pullup to 3.5V Serial frequency programming / configuration1 True logic (0V = low). Weak pullup to 3.5V True logic (0V = low). Weak pullup to 3.5V True logic (0V = low). Weak pullup to 3.5V 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 00-15 CH 16-31 314.600 – 314.975 MHz (25kHz steps) for 315MHz variant 315.000 – 315.375 MHz (25kHz steps) CH 00-15 CH 16-31 433.875 – 434.625 MHz (50kHz steps) for 433MHz variant 433.900 – 434.650 MHz (50kHz steps) CH 00-15 CH 16-31 458.525 – 458.775 MHz (25kHz steps) for 458MHz variant 458.525 – 458.775 MHz (25kHz steps) Radiometrix Ltd TLC2H/RLC2H Data Sheet page 5 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 rewriting 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 LOAD aa nnnnn SETPAR SETSER RVALUE rrrr SINGLE nnnnn Serially select channel XX, where XX is 0 to 31 Set value of N register for channel aa, where aa is Channels 0 to 31 Channel selected by 5 bit parallel inputs (4pins + jumper) Channel selected by most recent GOCHAN operation Set value for R register Set value of N for single channel operation. N value NOT stored in EEPROM Process entry Clear all buffers Disable command mode <cr> / # 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) N TX = N RX = N TX = N RX = N TX = N RX = f RF f Channelspacing = 314.600 MHz = 12584 25kHz f RF − 21.4 MHz 314.600 MHz − 21.4 MHz = = 11728 f Channelspacing 25kHz f RF f Channelspacing = 433.875MHz = 17355 25kHz R= f TCXO f channelspacing = 13MHz , So R=520 25kHz f RF − 21.4 MHz 433.875MHz − 21.4 MHz = = 16499 f Channelspacing 25kHz f RF f Channelspacing = 458.525MHz = 18341 25kHz f RF − 21.4 MHz 458.525MHz − 21.4 MHz = = 17485 25kHz f Channelspacing 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 6 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 0 315MHz variant 433MHz variant 458MHz variant 314.600 433.875 458.525 1 314.625 433.925 458.550 2 314.650 433.975 458.575 3 314.675 434.025 458.600 4 5 6 314.700 314.725 314.750 434.075 434.125 434.175 458.700 8 314.800 434.275 458.725 9 314.825 434.325 458.750 10 314.850 434.375 458.775 12 13 314.900 314.925 434.475 434.525 16 315.000 433.900 458.525 17 315.025 433.950 458.550 18 315.050 434.000 458.575 19 315.075 434.050 458.600 20 315.100 434.100 458.625 21 315.125 434.150 458.650 22 315.150 434.200 458.675 23 315.175 434.250 458.700 24 315.200 434.300 458.725 25 315.225 434.350 458.750 26 315.250 434.400 458.775 27 315.275 434.450 458.775 28 315.300 434.500 458.775 29 315.325 434.550 458.775 30 315.350 434.600 458.775 31 315.375 434.650 458.775 458.775 458.775 458.775 14 314.950 434.575 458.775 15 314.975 434.625 458.775 Radiometrix Ltd 458MHz variant 458.675 434.225 434.425 433MHz variant 458.650 314.775 314.875 315MHz variant 458.625 7 11 Channel Jumper P4 removed TLC2H/RLC2H Data Sheet page 7 Condensed specifications Frequency Peak FM deviation Frequency stability Channel spacing Number of channels 314.600-315.375MHz (USA) 433.875-434.675MHz (Europe) 458.525-458.775MHz (UK) (custom variants on 433MHz – 435MHz) ±3kHz on 25kHz channel spacing variant ±1.5kHz on 12.5kHz channel spacing variant ±1.5kHz 25kHz or 12.5kHz 32 channels selected via RS232 interface or 2 x 16 groups by parallel port Operating temperature Spurious radiations -10 ºC to +60 ºC (Storage -30 ºC to +70 ºC) Compliant with ETSI EN 300 220-2 and EN 301 489-3 Transmitter Output power TX on switching time Modulation type TX modulation bandwidth Adjacent channel TX power TX spurious +10dBm (10mW) ±1dB (1mW or 5mW by special order) 50ms from power up FSK (F3D) DC – 5kHz (3V CMOS compatible) <-37dBm <-45dBm Transmitter Supply Voltage Current Inputs Size Interface User Channel RF Recommended PCB hole size Receiver Sensitivity image / spurious / adjacent channel Blocking LO re-radiation Supply Voltage Current Outputs Size Interface User Channel RF Recommended PCB hole size Power on to valid audio Power on to stable data out (50:50 mark / space) Maximum time between data transitions 3.1V – 15V 34mA nominal transmit analogue, data (CMOS/TTL compatible) 37 x 27 x 8mm 3pin 0.2" pitch molex 4pin 0.1" pitch molex 2pin 3mm pitch 1.2mm -120dBm for 12 dB SINAD <-60dB <-85dB <-60dBm 3.7V – 15V 18mA RSSI, audio, data 50 x 30 x 10mm 5pin 0.1" pitch molex 4pin 0.1" pitch molex 2pin 0.1" pitch molex 1.2mm 28ms 50ms 250ms 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 8 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 40kΩ. Pin 2 can drive a 100µA 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. Ultimate performance Easy of design set-up Size Immunity proximity effects Range open ground to similar antenna Radiometrix Ltd A whip *** *** * * 500m TLC2H/RLC2H Data Sheet B helical ** ** *** ** 200 C loop * * ** *** 100 page 9 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. 0.5 mm enameled copper wire close wound on 3.2 mm diameter former RF 433 MHz = 24 turns A. Helical antenna Feed point 15% to 25% of total loop length RF-GND track width = 1mm 2 C2 C3 C1 4 to 10 cm inside area RF C4 B. Loop antenna 16.4cm wire, rod, PCB-track or a combination of these three RF C. Whip antenna 433 MHz = 16.4 cm total from RF pin. Figure 7: Antenna types Variants and ordering information Part No. Description Frequency band TLC2H-315-5 RLC2H-315-5 Transmitter Receiver 314.600-315.375MHz 314.600-315.375MHz TLC2H-433-5 RLC2H-433-5 Transmitter Receiver 433.875-434.650MHz 433.875-434.650MHz TLC2H-458-5 RLC2H-458-5 Transmitter Receiver 458.525-458.775MHz 458.525-458.775MHz 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. Radiometrix Ltd TLC2H/RLC2H Data Sheet page 10 Radiometrix Ltd Hartcran House 231 Kenton Lane Harrow, Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 [email protected] 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 [email protected] Radiometrix Ltd European Radiocommunications Office (ERO) Peblingehus Nansensgade 19 DK 1366 Copenhagen Tel. +45 33896300 Fax +45 33896330 [email protected] www.ero.dk TLC2H/RLC2H Data Sheet page 11 Radiometrix Ltd Worldwide Distributors Radiometrix Ltd Hartcran House 231 Kenton Lane Harrow Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 [email protected] www.radiometrix.com RF Modules Australia P.O. 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Via Sacco e Vanzetti, 34 20099 SESTO SAN GIOVANNI Milano ITALY Tel: +39 02 34541160 Fax: +39 02 34541165 [email protected] RF Design Ltd Suite 19, 220 Ottery Road, Wynberg, Cape Town 7945 SOUTH AFRICA Tel: +27-21-762-5365, FAX: +27-21-797-1983 [email protected] HY-LINE AG Forbüelstrasse 16, CH-8245 Feuerthalen, SWITZERLAND Tel: +41-52 659 63 03, Fax: +41-52 659 63 93 [email protected] Lemos International Co. Inc. 1275 Post Rd, Suite A-12, Fairfield, Ct. 06824, UNITED STATES OF AMERICA Tel: +1 203 254 1531, Fax: +1 203 254 7442 [email protected] Fax: +1 416 855 2105 [email protected]