<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>Marco,</div><div>If you take a more careful look you will find out that the LV was shut down.</div><div>The HV was off. We investigate the reason. It is the first time we had such an event.</div><div>Probably it was connected with the software update that was done approximately at the same time.</div><div>Regards,</div><div>Valery</div><div><br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Marco Mirazita" <Marco.Mirazita@lnf.infn.it><br><b>To: </b>dsg-rich@jlab.org, rich@jlab.org<br><b>Sent: </b>Tuesday, October 16, 2018 4:03:24 AM<br><b>Subject: </b>[Dsg-rich] FPGA temp alarm<br></blockquote></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;">Hi all,<br>yesterday at about 4:20 pm jlab time I received several alarm messages <br>saying that the FPGA temperatures reached values around 115 deg.<br>Since it looked like a readout error, I checked the strip chart, where <br>there is actually a spike in the readout at that time, but to values of <br>the order of -10^5. See the attached plot.<br>So, it is clear that it was a readout error, but it is strange that the <br>alarm message and epics report different values.<br>Also, according to the logbook, the electronics was not shut down by the <br>interlocks, as should have happened if the temperature really went above <br>100 deg.<br>So, perhaps the values reported in the alarm messages are not the <br>correct ones?<br>Marco<br><br><br>_______________________________________________<br>Dsg-rich mailing list<br>Dsg-rich@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/dsg-rich<br></blockquote></div></div></body></html>