40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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Entry  Fri Feb 10 02:35:29 2012, kiwamu, Update, IOO, crazy ground motion MCunlock.png
    Reply  Fri Feb 10 11:01:31 2012, steve, Update, IOO, crazy ground motion seism1davg.png
       Reply  Fri Feb 10 11:46:44 2012, steve, Update, IOO, seismic noise back to normal seism4h.pngseis60s.pngoneday.png
          Reply  Fri Feb 10 15:47:38 2012, rana, Update, PEM, seismic noise back to normal 
             Reply  Fri Feb 10 15:52:35 2012, Jenne, Update, PEM, seismic BLRMS loud too 
                Reply  Fri Feb 10 23:58:30 2012, rana, Update, PEM, seismic BLRMS loud too 
                   Reply  Mon Feb 13 11:30:51 2012, Jenne, Update, PEM, seismic BLRMS loud too 
                      Reply  Mon Feb 13 12:02:17 2012, Koji, Update, PEM, seismic BLRMS loud too 
    Reply  Fri Feb 10 23:19:09 2012, kiwamu, Update, IOO, cross talk causing fake seimometer signals 
Message ID: 6276     Entry time: Mon Feb 13 11:30:51 2012     In reply to: 6275     Reply to this: 6277
Author: Jenne 
Type: Update 
Category: PEM 
Subject: seismic BLRMS loud too 

Quote:

Quote:

 

 So, none of our PEM BLRMS channels are recorded as of right now.  All we have for long-term record is the StripTool on the wall.  The 0.1-0.3Hz and 0.3-1 Hz traces both show these weirdo things, but the 1Hz and up BLRMS don't have any unusual noise.

 Seems like a problem to solve on Monday so that we don't end up without trends like this again.

 Tragically, this is more tricksy than I would have thought. The channels we need are "cdsEpicsOutput"s in the model.  They don't show up in Dataviewer (fast or slow channels) or the regular fast channel .ini file.  Jamie and I don't remember where these channels live and how to get them saved to frames.  I'm on top of it though.

I did notice however, that the striptool for seismic trends is showing the wrong channels for 3-10 and 10-30 Hz.  The other 3 channels are correctly the output after the sqrt is taken, but those two (orange and red on striptool) are before the sqrt, but after the bandpass and low pass.  I'll fix that now...

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