[ANSS-netops] s-13's and refteks
Greg Steiner
vlf at cablerocket.com
Tue Mar 22 13:42:55 UTC 2011
Mitch,
we typically used to run east tennessee S-13 stations with a gain of
66db to 72 dB( 2000 to 4000) to produce a background noise of about
5mVp-p. I suspect the noise is mainly higher frequency wind induced.
a reftek with its input set for 40vp-p differential will have its least
significant bit be a little over 4.7uV if you run with no gain you would
expect the output of the seismometer to be .005/2000 or 2.5uV. this will
give you less than 1 bit of recorded background noise. i would therefore
suspect that to record at least a little background noise you would want
to run at least a gain of 32.
Greg Steiner
--
Greg Steiner
VLF Designs
1621 Bella Vista Dr
Jackson, Mo. 63755
Ph:573-204-1286
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