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| 40m Log |
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 Thu May 28 16:43:52 2015, Steve, Update, PEM, Guralps swapped 
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 Mon Jun 1 15:22:19 2015, Steve, Update, PEM, Guralps X- short cable is bad
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Wed Jul 29 14:32:01 2015, Steve, Update, General, How not to solder
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Thu Jul 30 10:38:18 2015, Steve, Update, PEM, Y sesimostation is back on
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Thu Jul 30 13:34:52 2015, Koji, Update, PEM, Y sesimostation is back on
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Thu Jul 30 15:24:54 2015, Steve, Update, PEM, Y sesimostation is back on
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Fri Jul 31 10:36:22 2015, Steve, Update, PEM, X seismo station short cable removed
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Sat Aug 1 20:46:29 2015, Koji, Update, PEM, X seismo station short cable removed
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Wed Aug 12 11:44:13 2015, ericq, Update, PEM, Gur2 Channels still wonky
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Fri Aug 14 09:07:45 2015, Steve, Update, PEM, Gur interface box is wonky
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Fri Aug 14 12:10:08 2015, Koji, Update, PEM, Gur interface box is wonky
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Tue Aug 18 11:16:17 2015, Steve, Update, PEM, Gur interface box is wonky
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Wed Aug 19 07:58:25 2015, Steve, Update, PEM, Gur interface box
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Thu Aug 20 11:31:55 2015, Koji, Update, PEM, Gur interface box
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Fri Aug 21 17:15:13 2015, Steve, Update, PEM, Gur interface box
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Fri Aug 28 17:04:12 2015, Steve, Update, PEM, Gur interface box cable
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Fri Aug 28 20:20:26 2015, rana, Update, PEM, Gur interface box cable
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Tue Sep 1 10:36:06 2015, Steve, Update, PEM, Gurs swapped
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Thu Sep 17 16:04:09 2015, Steve, Update, PEM, Gurs
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Fri Aug 14 17:20:01 2015, Jenne, Update, PEM, Gur interface box is wonky
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Message ID: 11520
Entry time: Thu Aug 20 11:31:55 2015
In reply to: 11517
Reply to this: 11523
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| Author: |
Koji |
| Type: |
Update |
| Category: |
PEM |
| Subject: |
Gur interface box |
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As reported previously, the transfer functions of the channels look fine. (i.e. All channels almost identical.)
I checked the chain from the unit input to the DAQ BNC connectors. They were all OK.
Today I have been checking the signals on the unit with the long DB37 cables connected.
I could not see anything on the Gur2 channels on the board. I looked at the DB37 for Gur2 and felt something is wrong.
I opened the housing of the cable and realized that all the pins are not fully inserted.
The wires were crimped improperly and prevents them to be fully inserted.
=> We need to redo the crimping to insert them.
=> We need to check the other side too. |
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