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Entry  Wed Feb 24 16:11:15 2010, Jenne, Update, PEM, Seismic witnesses near MC1 tank moved 
    Reply  Sun Mar 7 23:05:39 2010, rana, Update, PEM, Seismic witnesses near MC1 tank moved seis.png
       Reply  Mon Mar 8 18:15:27 2010, rana, Update, PEM, Styrofoam Cooler on the Seismos SeismometersHuddled.jpg
          Reply  Tue Mar 9 12:06:53 2010, rana, Jenne, Update, PEM, Styrofoam Cooler on the Seismos 
             Reply  Wed Mar 10 15:02:58 2010, rana, Update, PEM, Styrofoam Cooler on the Seismos Seismic-Ref_100310.pngUntitled.gif
                Reply  Sat Mar 13 21:30:22 2010, rana, Update, PEM, Styrofoam Cooler on the Seismos Untitled.png
                   Reply  Mon Mar 15 16:39:36 2010, steve, Update, PEM, Guralp2 centered grlp2ffst.jpg
                      Reply  Thu Mar 18 08:49:51 2010, steve, Update, PEM, Guralp2 centered again ? grlp2xadj.jpg
                         Reply  Fri Mar 19 18:00:14 2010, jenne, Update, PEM, Guralp2 centered again 
                            Reply  Fri Mar 19 21:15:33 2010, rana, Update, PEM, Guralp2 centered again Untitled.png
                            Reply  Fri Mar 19 23:03:41 2010, rana, Update, PEM, Guralp2 centered again huddlez.png
                               Reply  Sun Mar 21 19:25:29 2010, rana, Update, PEM, Guralp2 centered again huddlez.png
                               Reply  Thu Mar 25 09:07:08 2010, steve, Update, PEM, Guralp2 x problem is back grlp2xproblm.jpg
                                  Reply  Wed Mar 31 16:31:44 2010, steve, Update, PEM, Guralp interface box turned off grlpntrfcbxoff.jpg
                                     Reply  Mon Apr 5 01:02:07 2010, rana, Update, PEM, Guralp interface box turned off Untitled.png
Message ID: 2674     Entry time: Mon Mar 15 16:39:36 2010     In reply to: 2671     Reply to this: 2678
Author: steve 
Type: Update 
Category: PEM 
Subject: Guralp2 centered 

Quote:

Untitled.png

 

Guralp 2 centered.The mass position offsets are: E-W 0.05V, N-S 0V, Z 0.4V

Guralp 1: E-W -0.1V, N-S -0.25V, Z 0V measured, not adjusted

The GUR2_X channel has an offset. See plot below when seismometers are disconnected. This offset has to be removed.

NOTE: this huddle is on bad-soft ground-lenoleum tile from prehistoric Flintstone age

 

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