easy-Radio Advanced wireless modules

LPRS has introduced the latest generation of its low-power wireless modules, easy-Radio Advanced, that offers simple-to-use, out-of-the-box wireless communication with a number of new features.

Key features include the ability of users to change the bandwidth of the radio from 150 kHz to 12.5 kHz, providing narrowband performance at a wideband budget. Internal temperature measurement of the wireless modules ensures less than 1.5 kHz frequency drift from ambient 20°C over a range of -40 to +85°C.

This feature may also be used as a thermometer to measure the temperature of the end-user equipment, accurate to within 1°C.

Modes of data transmission include the company’s protocol with 16-bit encryption and anti-cross talk software and a new raw data mode that allows users more flexibility to use their own coding system on any frequency they choose, enabling direct compatibility with other ISM raw data modules from any manufacturer.

With the addition of three more (total 4) separate data buffers, performance and data throughput has been greatly improved by up to 25%.

Other new features include digital RSSI (received signal strength indication), accurate internal level measurement of signal strength removing the requirement for the host system to handle A-D measurement.

A simple command for either the current RSSI level or the signal strength of the last received data packet is used. Temporary channel selection is another new command allowing the user to scan other channels if required without storing the settings in the internal EEPROM, maximising its life.

The module features a crystal controlled synthesiser for frequency accuracy <±1 kHz over full temperature range, a high sensitivity receiver (-117 dB at 12.5 kHz bandwidth), up to 10 mW output (at 434 MHz) and user programmable frequency (up to 132 channels), bandwidth (down to 12.5 kHz) and RS232 data rates up to 115200. It can be powered using a 3 V lithium battery or a regulated supply up to 5 VDC.