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Narrowband VHF/UHF Multichannel Transmitter/Receiver Modules

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article image Narrowband VHF/UHF Multichannel Transmitter/Receiver Modules

Wireless solutions developer Radiometrix has announced the introduction of the CXT / CXR module family. This transmitter/receiver pair provides a complete remote control switch function in a module format, delivering reliable, long range operation in situations where existing wide band solutions cannot offer adequate range, or where band congestion requires multiple channel operation

Thanks to inclusion of easy to use, single-function controllers/actuators the CXT and CXR transmitter/receiver modules are highly suited to tasks that just call for a simple on/off control function (such as flood light control, machine override shutdown, etc), without the need for any additional external circuitry (such as a microprocessor or dedicated encoder/decoder IC). This keeps the size, bill of materials cost and software overhead associated with system designs that employ these modules to a minimum.

Supporting data rates of up to 5 kbps, the modules are built on the radio hardware of the company’s successful LM series.

The integrated control coder/decoder uses a highly noise-tolerant biphase coded data stream, including generous preamble/framing sequences, CRC error detection to minimise false activations and a 16 bit user programmable address. All operating parameters (channel, address, frequency table setup) can be easily programmed by the user, via a simple serial interface. Put together, these features give the user a reliable remote actuator with an operating range of up to 1km.

The CXT and CXR transmitter/receiver modules come in compact shielded housings, measuring 33 mm x 23 mm x 9 mm and 46 mm x 23 mm x 9 mm respectively, with pins for PCB mounting. The transmitter/receiver modules have an operating temperature range of -20 °C to +55 °C and conform fully with EN 300 220-3 and EN 301 489-3 standards. Class one (to EN300-220-v2.3.1) receiver versions are also available.

Key applications for this transmitter/receiver pair include lighting control, security/fire/lone-worker alarms, ‘machine stop’ systems and generic industrial quality on/off switching mechanisms.

The CXT and CXR transmitter/receiver modules are available from RF Modules Australia .

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