The initial installation and tests were done with one three component digitizer and vault instrument on cable and one borehole vault instrument on digital radio telemetry. The vault instrument was compared against a collocated GSETT-II system that had been operational for a number of years and had undergone extensive testing and development.
Comparisons over a period of weeks confirmed that samples
from the new system
were being timed correctly, that the data was correct, and that
the calibration and instrument response was reasonable and stable.
the performance of the cabled vault element with the
telemetered borehole element, the
effects of radio telemetry on the data reliability
and the performance of the borehole vault during
periods of high wind could be determined. During this
stage of development, a number of minor changes were made
to the software, firmware in the digitizers and communications
controller, and hardware to improve performance and to assist
in field diagnostics.