LPRS easy-Radio Advanced wireless modules

LPRS has introduced its latest generation of low power wireless modules, easy-Radio Advanced (eRA).

Key features of eRA include the ability for users to change the bandwidth of the radio from 150 to 12.5 KHz. 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 easy-Radio protocol with 16-bit encryption and anti-crosstalk 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 four) separate data buffers, eRA performance and data throughput has been improved by up to 25% when compared to 02 versions.

Other new features of eRA include digital received signal strength indication (RSSI), 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.

Its features include 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 transmission power (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 cell or a regulated supply up to 5 VDC.