[Dsg-halla_gem] Crate status

[Holly Szumila-Vance]

Hi Pablo,

I am slightly concerned about the crate observations. We had no problem with the good crate during running and had the epics values available the whole run. The “bad” crate could not generate the epics pvs for the experiment and demonstrated a very different behavior than the crate we used even when we swapped in different cards from other crates. The problem was not an issue with the cards, as we observed.

-Holly

From: Pablo Campero Rojas <campero at jlab.org>
Date: Wednesday, July 31, 2024 at 12:33 PM
To: Holly Szumila-Vance <hszumila at jlab.org>, "dsg-halla_gem at jlab.org" <dsg-halla_gem at jlab.org>
Subject: Re: Crate status

Hello Holly,

From all the testing and troubleshooting performed, we believed that the inability to monitor the EPICS process variables for the A1515BTG boards was a problem related to the boards itself. We noticed that the EPICS PVs only were available when one board was connected at the time, regardless of the crate to which (crates .136 or .135) they were connected.

The following tasks were done to troubleshoot the boards:

  *   Checked and ensured that the latest firmware version (1.6.6) was installed in the mainframe (crate .136)

  *   Downloaded and upgraded HV Control firmware to recommended version 2.2.0 (crate .136)

  *   Received firmware file to upgrade A1515BTG boards to recommended version 1.01 (installing one at the time in crate .136 and also tried on crate .135) but failed, now boards have no firmware installed.

  *   Sent a report to CAEN technical support and they decided and authorized the return process for these two boards.
I'm in the process of completing the forms sent by CAEN to generate the RMA number to send the boards for repair as agreed.

In the meantime, I planning to start testing the A1515BTG board (PID 23962), this is the last board that I picked up with the reported voltage output monitoring issues, but first we (DSG) will discuss the details of our plan to test it in our control room and comply with all safety requirements.

Regards,
Pablo



________________________________
From: Holly Szumila-Vance <hszumila at jlab.org>
Sent: Wednesday, July 31, 2024 11:16 AM
To: Pablo Campero Rojas <campero at jlab.org>
Subject: Crate status


Hi Pablo,



What is the status on the crate? I am curious how that is going.



Thanks,

Holly
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