Nanometrics Broadband Seismic Sensor Workshop 24 March 2004

Nanometrics Broadband Seismic Sensor Workshop 24 March 2004 Neil Spriggs

Nanometrics Trillium 40 broadband seismometer § First seismometer development at Nanometrics § Designed for local and regional studies § Balance between spec/time to market, revenue for seismometer unit Specifications § 40 seconds to 50 Hz § Power consumption <0. 5 watts § Simple design with no mass lock § Wide operating temperature range with electronic mass centering

Nanometrics Trillium 40 Very simple to manufacture § Symmetric triaxial design, identical axis § Single circuit board, surface mount § Automatic test software, axis and boards are manufactured independently and are interchangeable

Nanometrics

Nanometrics Blue Yellow Red Green CMG-40 T self noise Trillium 40 self noise CMG-3 T self noise STS-2 self noise Data from IRIS comparison tests Coherence data, STS-2 vs. Trillium 40 Data from University of St Louis Trillium 40

Nanometrics New Developments Trillium 120 broadband seismometer § Response, 120 seconds to 50 Hz § Mechanical mass centering using stepper motor § Low power consumption, < 1 watt § No mass lock, same mass support system as Trillium 40 § Onboard web server with serial interface § Factory calibration data in XML § Center masses using a laptop and browser § Review temperature and power SOH using a browser § Symmetric triaxial design for ease of manufacture

Nanometrics Trillium 120 seismometer and Taurus hand held data Acquisition system

Nanometrics Thank you. Nanometrics Inc www. nanometrics. ca