RSTAR L900 Wireless Data Acquisition for Geotechnical Instruments

Overview

The RSTAR Array Radio Series uses wireless technology to provide automated data acquisition. A complete RSTAR L900 System uses L900 RSTAR Nodes at the sensor level, deployed in a star topology from a continuously active L900 RSTAR Hub, which consists of an L900 RTU interfaced to

a FlexDAQ Data Logger. The RSTAR Array Radio Series is based on the 900 MHZ, 868 MHz, and 2.4 GHz spread spectrum band (country dependent) with extensive open-country range through use of simple dipole or directional antennae.

Power requirements for a single RSTAR L900 node is one lithium standard cell. The FlexDAQ can be powered by a solar panel, batteries, or AC power.

L900 SYSTEM SPECIFICATIONS

ITEM     SPECIFICATION

Operating Frequency (country dependent) : 900 MHz, 868 MHz, 2.4 GHz – Spread Spectrum band
Access Frequency : 24 hours
Outdoor Range : Up to 14 km (at 900 MHz) in open country, depending on frequency and antenna
Maximum Nodes : 255
Communication : See diagram on inside

L900 NODE SPECIFICATIONS

ITEM     SPECIFICATION

Memory : 4 MB
Time Format : Month / day / year
Hour / minute / second
Power Source : 1 lithium standard cell battery
Additional Quiescent Current : 15 µA
Battery Life : Years
Temperature Range : -40°C to 60°C (-40° to 140°F)
Enclosure dimensions will vary according to chosen data logger