<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div><div><div>Even though the coil constant is quite high for these velocity transducers, the mass will hit the physical stops well before they can get to m/s velocities. I'm not sure what these physical limits are on the S-13, but we use 420 V/m/s L4C's and have them set at 2.5V on the Basalt/Granite systems. Assuming that you have an accelerometer at the site as well, even if you clip the data logger not the sensor at the 2.5V scale, your accelerometer should have great signal to noise at that point.</div><div><br></div><div>It would be interesting to test these on a shake table and see what their actual max output is. It will of course be frequency dependent. I think we saw physical clipping at about 0.002 m/s for out 420 V/m/s L4C's during the aftershocks of the Northridge earthquake.</div><div><br></div><div>Cheers,</div><div>Jamie</div><div><br></div></div></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> "David S. Croker" <<a href="mailto:croker@usgs.gov">croker@usgs.gov</a>><br><span style="font-weight:bold">Date: </span> Tuesday, June 11, 2013 10:31 AM<br><span style="font-weight:bold">To: </span> Jacob Crummey <<a href="mailto:jcrummey@gps.caltech.edu">jcrummey@gps.caltech.edu</a>><br><span style="font-weight:bold">Cc: </span> <<a href="mailto:anss-netops@geohazards.usgs.gov">anss-netops@geohazards.usgs.gov</a>><br><span style="font-weight:bold">Subject: </span> Re: [ANSS-netops] Configuration for Kinemetrics Basalt - S-13s<br></div><div><br></div>Hi John,<br><br>In the NCSN we do not use S-13's but rather L-4C seismometers from Sercel. In the few installations where we have been installing Basalts with L-4C's attached we have used the 2.5V full-scale value for that channel. So far that seems to work just fine. However, I see that the S-13 has just over twice the output (~630 V/m/s) as an L-4C (~275 V/m/s), so you may want to try the 5V setting on the Basalt.<br><br>If you want more general help setting up the Basalt, ask Jacob. ;-)<br><br>Dave<br><br><div class="gmail_quote">On Mon, Jun 10, 2013 at 12:16 PM, Jacob Crummey <span dir="ltr"><<a href="mailto:jcrummey@gps.caltech.edu" target="_blank">jcrummey@gps.caltech.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Hi John,<br>
<br>
Are you looking for the configuration of the Basalt specific to
the S-13 sensors? Or are you asking for help in setting up a
Basalt in general?<br>
<br>
I can help you with setting up a Basalt, but we don't use the S-13
sensors in our network.<br>
<br>
-Jacob<br>
<br>
<br>
On 06/10/2013 12:11 PM, John H Parker (jhparkr1) wrote:<br>
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<p class="MsoNormal">Net-Ops mailing list:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">We are going to be setting up two new
stations using Kinemetrics Basalt DASs with S-13 sensors. We
have never done this before, and wondered if anybody out there
had done this and how you had configured it.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks so much for your help,<u></u><u></u></p>
<p class="MsoNormal">John<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">John H. Parker<u></u><u></u></p>
<p class="MsoNormal">Research Associate/Technician<u></u><u></u></p>
<p class="MsoNormal">The University of Memphis<u></u><u></u></p>
<p class="MsoNormal">Center for Earthquake Research and
Information (CERI)<u></u><u></u></p>
<p class="MsoNormal"><a href="mailto:jhparkr1@memphis.edu" target="_blank">jhparkr1@memphis.edu</a><u></u><u></u></p>
<p class="MsoNormal">(336) 228-7230<u></u><u></u></p>
<p class="MsoNormal">(901) 258-5115 (Mobile)<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The University of Memphis, a Tennessee
Board of Regents institution, is an Equal
Opportunity/Affirmative Action University. It is committed to
education of a non-racially identifiable student body.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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ANSS-netops mailing list<br><a href="mailto:ANSS-netops@geohazards.usgs.gov">ANSS-netops@geohazards.usgs.gov</a><br><a href="https://geohazards.usgs.gov/mailman/listinfo/anss-netops" target="_blank">https://geohazards.usgs.gov/mailman/listinfo/anss-netops</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>USGS - Earthquake Science Center - NCSN Field Operations Manager<br>
David S. Croker office (650) 329-4697<br>
345 Middlefield Rd, MS 977 fax (650) 329-4732<br>
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email: <a href="mailto:croker@usgs.gov" target="_blank">croker@usgs.gov</a><br>
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