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Hi Brian,<br>
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Right, we're monitoring the FPGA internal temp sensor using the XADC. <br>
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I don't know what the original question was, but wanted to mention that we have two more temperatures monitored in the external regulators (which was the XADC analog-to-digital converter) - they are in EPICS, but I'm not sure if they are archived.<br>
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Also, I would expect it's possible to cross-check or calibrate the temperature sensors if one monitors the temperature as the system turns on - you should be able extrapolate to the box temperature before it was powered and see how well everything agrees.<br>
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Ben<br>
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From: Brian Eng<br>
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Sent: Monday, October 14, 10:17 AM<br>
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Subject: Re: [Dsg-rich] [EXTERNAL] meeting with DSG<br>
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To: marco mirazita<br>
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Cc: dsg-rich@jlab.org<br>
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Hi Marco,<br>
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Regarding the FPGA temperatures, since we don't have the FPGA code itself we can only make an educated guess, but it's quite likely that it is using the on-die temperature sensor.<br>
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<a href="https://www.xilinx.com/support/documentation/user_guides/ug480_7Series_XADC.pdf">https://www.xilinx.com/support/documentation/user_guides/ug480_7Series_XADC.pdf</a><br>
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(page 14, figure 1-1)<br>
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Note that this sensor has an error of +/- 4C when the temp is < 100C<br>
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> On Oct 14, 2019, at 3:35 AM, mirazita@jlab.org wrote:<br>
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> <br>
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> <br>
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> marco mirazita has invited you to a meeting. <br>
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_______________________________________________<br>
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Dsg-rich mailing list<br>
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Dsg-rich@jlab.org<br>
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<a href="https://mailman.jlab.org/mailman/listinfo/dsg-rich">https://mailman.jlab.org/mailman/listinfo/dsg-rich</a><br>
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