[Dsg-hallb_magnets] [New Logentry] Follow-up Re: TR8122A Flakey Readout

[beng at jlab.org]

Logentry Text:
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We first tried disconnecting and reconnected fro the back of the LV chassis, readout was still bad.

Morgan and Probir accessed the top of the service tower to clean/reseat the connectors at the top, still bad.

Finally we tried moving the connector to a different channel on the same LV chassis just to see what would happen, readout stopped alternating between two values like it was previously. The temperature was wrong, but that is expected as it was now using the wrong sensor calibration.

Further troubleshooting to follow ... first step will be to find spare boards used in the LV chassis and just try swapping those out.

Explanation of the numbers in the attached plot.

1 = Disconnected J7 from back of Chassis #1
2 = Morgan disconnected from top of Service Tower
3 = Disconnected again and additional cleaning from top of Service Tower
4 = J7 and moved on to J6 (see swapped plot)

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4308937
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