Method and apparatus for testing geophones
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United States of America Patent
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May 12, 1992
Issued Date -
N/A
app pub date -
Nov 19, 1990
filing date -
May 17, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A LCD display is driven by certain elements to indicate the responses of a geophone to various tests as a waveform. Waveforms are displayed for an impulse tests, wherein a current pulse is applied to the geophone and the response is displayed, and for a tap test, wherein the top of a geophone is tapped and the first break of the resulting displayed waveform indicates the polarity of the geophone connections. Response to a resistance test is provided by a level indicator. The waveform on the display may be examined with reference to a comparitor indicative of a proper response, and the operational or disfunctional condition of the geophone thereby determined.
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