TXM-433-10

TXM-433-10 RADIOMETRIX | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 11

Technical content

Radiometrix Ltd, TXM Data Sheet page 1 Typical features include: CE Certified by independent Notified Body Verified to comply with harmonised radio standard ETSI EN 300 220-3 and EMC standard ETSI EN 301 489-3 by accredited Test Laboratory PCB Mounting, space saving SIL style SAW controlled wide band FM transmission High data rates, 5kbps and 10kbps versions Analogue or Digital data input Wide supply range 2.7V-4.0 or 6.0V-9.0V @ <17mA The transmitter modules are most commonly employed in Wireless Security systems. The transmitter and the matching receiver (RX2) are approved to harmonised radio standard ETSI EN 300 220-3 and EMC standard ETSI EN 301 489-3. The TXM and RX2 modules will suit one-to-one and multi-node wireless links in applications including car and building security, EPOS and inventory tracking, remote industrial process monitoring and computer networking. Because of their small size and low power requirements, both modules are ideal for use in portable, battery-powered applications such as hand- held terminals. Typical applications include :- Domestic and commercial security Guard patrol / lone worker protection Medical Alert / Nurse Call systems Mobile panic attack Computer networking Remote industrial process monitoring Data transfer through hazardous environments Lighting control, Garage door openers Fire alarms Picture / antique protection alarms Remote control, Access control The TXM-433-5 and TXM-433-10 integrate a low power FM UHF radio transmitter on a small module. Together with the matching RX2-433-14 or RX2-433-40 receiver a one- way radio data link can be achieved over a distance up to 200 metres on open ground. TXM-433-10 transmitter (back & front view) Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Issue 5, November 2004 TXM-433 UHF Radio Telemetry Transmit ModuleUHF Radio Telemetry Transmit ModuleUHF Radio Telemetry Transmit ModuleUHF Radio Telemetry Transmit Module Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233

Radiometrix Ltd, TXM Data Sheet page 3 Performance data TXM-433-5 Absolute Maximum Ratings: Supply voltage Vcc pin 3 -0.7V to + 12V Modulation input pin 5 -0.7V to + 9V Operating temperature -10 °C to + 55 °C Storage temperature -40 °C to + 100 °C Performance Data: ambient temperature: 20°C supply voltage: +8.0V, unless noted otherwise test circuit: figure 3 Parameter Min Typical Max Units Notes Operating supply range (Vcc) 6.0 - 9.0 V - Supply current, Vcc = 6.0V 3.0 6.0 10.0 mA - Vcc = 9.0V 5.0 10.0 17.0 mA - Radiated power (ERP) Vcc = 6.0V -16 -10 -7 dBm 1 Vcc = 9.0V -13 -8 -5 dBm 1 Transmit frequency (Frf) 418.00 / 433.92 MHz - Initial frequency accuracy -80 - +80 kHz - Overall frequency accuracy -95 - +95 kHz 2 Spurious radiation Meets the EN300 220-1 standard 3 FM deviation (+/-) 15 25 40 kHz 4 Modulation Bandwidth (-3dB) analogue DC - 10 kHz 4 Modulation digital pulse width 100 - - µs 5 Notes 1. Module on 50mm square ground plane, helical antenna 2. Supply 6V to 9V, temp -10 °C to +55°C. 3. <-54 dBm in bands 41-68, 87.5-118, 162-230 & 470-862 MHz <-36 dBm else where below 1GHz , <-30dBm above 1GHz 4. Standard modulation: 2kHz square wave, 0 to Vcc 5. High or Low pulse. figure 3: TXM 5kbps version test circuit

Radiometrix Ltd, TXM Data Sheet page 4 Performance data TXM-418-10 and TXM-433-10 Absolute Maximum Ratings: Supply voltage Vcc pin 3 -0.7 to + 6V Modulation input pin 5 -0.7 to + 13V Operating temperature -10°C to + 55°C Storage temperature -40°C to + 100°C Performance Data: ambient temperature: 20 °C supply voltage: 3.0V, unless noted otherwise test circuit: figure 4 Parameter Min Typical Max Units Notes Operating supply range (Vcc) 2.7 3.2 4 V - Supply current,Vcc = 2.7V 3.0 6.0 13.0 mA - Vcc = 4.0V 5.0 10.0 17.0 mA - Conducted power in to 50 Ω , Vcc = 2.7V - -5 - dBm 1 Vcc = 3.6V - 0 - dBm 1 Transmit frequency (Frf) 433.92 MHz - Initial frequency accuracy -85 0 +85 kHz - Overall frequency accuracy -95 0 +95 kHz 1 Spurious radiation 2 FM deviation (+/-) 15 25 40 kHz 3 Modulation Bandwidth (-3dB) analogue DC - 20 kHz 3 Modulation digital pulse width 50 - - µs 4 Notes 1. Supply 2V to 3.6V, temp -10 °C to +55°C. 2. <-54 dBm in bands 41-68, 87.5-118, 162-230 & 470-862 MHz <-36 dBm else where below 1GHz , <-30dBm above 1GHz 3. Standard modulation: 2kHz square wave, 0 to Vcc 4. High or Low pulse.

Radiometrix Ltd, TXM Data Sheet page 6

• Data Input, pin 5, is normally driven directly by CMOS logic levels from a data encoder IC. There is a wide range of encoder/decoder IC’s available which may be used with the modules: MM57C200, 57410 National Semiconductor UM3750 UMC HT12 series Holtek MC14026 Motorola AS2787 Austria Systeme International GmbH
• The encoder normally being run on the same supply voltage as the transmitter. Analogue drive eg. 2 tone FSK, is also possible, the pk to pk level should be between 5V and 9V peak to peak and must not drive pin 5 below 0V. There will be some 2nd harmonic distortion due to the varactor modulator (typ. <15%), this may be reduced if necessary by predistortion of the analogue waveform Antenna requirements Three types of integral antenna are recommended and approved for use with the module: A) Helical: Wire coil, connected directly to pin 2, 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. B) Loop, A loop of PCB track tuned by a fixed or variable capacitor to ground at the 'hot' end and fed from pin 2 at a point 20% from the ground end. Loops have high immunity to proximity de-tuning. C) Whip This is a wire, rod ,PCB track or combination connected directly to pin 2 of the module. Optimum total length is 17cm (1/4 wave @ 418MHz) Keep he 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 Antenna selection chart A B C helical loop whip Easy of design set-up ** * * Immunity proximity effects *** * Range open ground to similar antenna 80m 50m 120m 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.

Radiometrix Ltd, TXM Data Sheet page 7 A. Helical antenna B. Loop antenna RF C1C2 C4C3 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. RF Duty Cycle requirements The duty cycle is defined as the ratio, expressed as a percentage, of the maximum transmitter “on” time on one or more carrier frequencies, relative to a one hour period. Where an acknowledgement message is required, the additional transmitter “on” time shall be included. There is a 10% duty cycle restriction on 433.050-434.790 MHz band in most of the EU member states. The TXM-433 is a RF module intended to be incorporated into a wide variety of applications and finished products, Radiometrix has no control over the end use of the TXM-433.The harmonised band 433.050 to 434.790 MHz as detailed in Annex 1 Band E of CEPT/ERC Recommendation 70-03 (which can be downloaded at http://www.ero.dk/scripts/docmanag98/dm.dll/QueryDoc?Cat=Recommendation) has list of countries where Duty Cycle restriction apply. Module users should, therefore, ensure that they comply with the stated Duty Cycle requirements of the version of CEPT/ERC Recommendation 70-03 in place at the time of incorporation of the TXM-433 into their product. It should be noted that the stated Duty Cycle must not be exceeded otherwise any approval granted for the TXM-433 will be invalidated. figure 6: Antenna configurations

Radiometrix Ltd, TXM Data Sheet page 8

Ordering information

The following are standard: TXM-433-5 5kbps data rate Transmitter RX2-433-14-5V 14kbps data rate matching Receiver RX2-433-40-5V 40kbps data rate matching Receiver SILRX-433-5 5kbps data rate matching Receiver TXM-433-10 10kbps data rate Transmitter RX2-433-14-5V 14kbps data rate matching Receiver RX2-433-40-5V 40kbps data rate matching Receiver SILRX-433-10 10kbps data rate matching Receiver 3V versions of the RX2 receivers are available and should be ordered with a -3V suffix on the part number. (e.g. RX2-433-14-3V is set-up for 3V to 4V operation) All modules are available in a 418MHz version for UK use. All Radiometrix’s products are designed and manufactured in England

Radiometrix Ltd, TXM Data Sheet page 9 CE Certificate of TXM and its variants

Radiometrix Ltd, TXM Data Sheet page 10 Notes

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, spec ification 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 manufactu rer 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 spec ified in Article 3 of the Di rective, as appropriate to the particular equipment. Further details are available on The Office of Communications (Ofcom) web site: http://www.ofcom.org.uk/radiocomms/if i/licensing/licensin g_policy_manual/ 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