Signal conditioning is provided by the Data Acquisition System (DAS). The DAS consists of preamplifiers, Analog-to-Digital (A/D) converters, time signal receiver, on-site data storage, telemetry interface, and provides state-of-health information to both local and remote users.
Preamplifiers are necessary to condition and adjust the analog output of the sensor so as to match impedance and gain levels on the input to the A/D converter.
These new digitizers are designed to operate with minimal power (<1W) while still maintaining very low internal electronic noise characteristics. The construction of these devices is designed for rugged , harsh outdoor environments.