USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
McVCO Handbook 1999
--
P.J. McChesney, 1999,
McVCO Handbook 1999:
U.S. Geological Survey Open-File Report 99-361, 51p.
Information
McVCO is a microcontroller-based frequency generator that replaces the
voltage controlled oscillator (VCO) used in the analog telemetry of seismic
data. It accepts low-level signals from a seismometer and produces a
frequency modulated subcarrier suitable for radio or telephone links to a
data collection site.
McVCO was designed for the purpose of improving the analog telemetry of
signals within the Pacific Northwest Seismograph Network (PNSN). Its
development received support from the University of Washington Geophysics
Program, and both the Volcano Hazards and Earthquake Hazards programs of the
United States Geological Survey (USGS).
This handbook covers operation of McVCO, provides a technical reference for
those who require a closer look at how McVCO works, and covers a collection
of topics that need explicit treatment or that spring from deployment of the
instrument.
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01/18/00, Lyn Topinka