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 Fri Feb 10 02:35:29 2012, kiwamu, Update, IOO, crazy ground motion 
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 Fri Feb 10 11:01:31 2012, steve, Update, IOO, crazy ground motion
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Fri Feb 10 11:46:44 2012, steve, Update, IOO, seismic noise back to normal
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Fri Feb 10 15:47:38 2012, rana, Update, PEM, seismic noise back to normal
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Fri Feb 10 15:52:35 2012, Jenne, Update, PEM, seismic BLRMS loud too
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Fri Feb 10 23:58:30 2012, rana, Update, PEM, seismic BLRMS loud too
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Mon Feb 13 11:30:51 2012, Jenne, Update, PEM, seismic BLRMS loud too
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Mon Feb 13 12:02:17 2012, Koji, Update, PEM, seismic BLRMS loud too
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Fri Feb 10 23:19:09 2012, kiwamu, Update, IOO, cross talk causing fake seimometer signals
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Message ID: 6276
Entry time: Mon Feb 13 11:30:51 2012
In reply to: 6275
Reply to this: 6277
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| Author: |
Jenne |
| Type: |
Update |
| Category: |
PEM |
| Subject: |
seismic BLRMS loud too |
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| Quote: |
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| Quote: |
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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.
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Seems like a problem to solve on Monday so that we don't end up without trends like this again.
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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... |