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<p style="margin-top:0;margin-bottom:0">Hello Brad,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Currently, the firmware running on the HVCAEN SY4527 <span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">crate
mainframe </span> is the latest one available by CAEN (<span style="font-size: 12pt;">Rel. 2.0.2 - March </span><span style="font-size: 12pt;">2019</span>).</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Best Regards,</p>
<p style="margin-top:0;margin-bottom:0">Pablo</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Brad Sawatzky <brads@jlab.org><br>
<b>Sent:</b> Tuesday, July 30, 2019 12:46:44 PM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Pablo Campero Rojas <campero@jlab.org>; dsg-hallc controls <dsg-hallc_controls@jlab.org>; Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-hallc_controls] CAEN-HV boards test results</font>
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<div class="PlainText">Interesting. I have the other crate in the ESB -- I'll ask Chuck to<br>
move it back to your area.<br>
<br>
Any idea if the firmware on the crate you have is current?<br>
<br>
-- Brad<br>
<br>
On Tue, 30 Jul 2019, Marc Mcmullen wrote:<br>
<br>
> Hi Simona and Brad,<br>
> DSG is investigating the issue Pablo described in the previous email,<br>
> where certain channel parameters of a CAEN HV module will arbitrarily<br>
> change. The tests Pablo ran were on the A1535 modules, which were tested<br>
> in slot 13. All of these modules were old, and it was not clear if the<br>
> issue was local to that particular type of module or the slot.<br>
> I am currently testing the brand new A7030TN modules on multiple slots.<br>
> Module 0297 is located in slot 1, channel 28 failed to complete a full<br>
> current test by ramping to ~1500V with a 1.5M ohm load, it stopped at<br>
> 400V. I checked the parameters using the CAEN GECO interface and the SVMax<br>
> was set to 400V.<br>
> Prior to running the test I had set all slot 1 SVMax values to 3000V.<br>
> Before rerunning the test this morning I set the SVMax back to 3000V<br>
> (using the GECO interface) and ran the test. The test stopped at 600V, I<br>
> checked the SVMax and it was set to 3000V. At that point I asked Pablo to<br>
> check the PV using CSS to look directly into the server and the SVMax<br>
> process variable was indeed set to 600V, the GECO interface was still<br>
> displaying 3000V.<br>
> I used the GECO interface and re-entered 3000V and noted that as I<br>
> highlighted the value, the GECO display changed to 400V. I changed the<br>
> value to 3000V and re-ran the test and it ramped to the expected voltage<br>
> before and tripped as expected.<br>
> This confirms a suspicion that the embedded EPICS server software in the<br>
> sy4527 mainframe has an issue. The process variable changed multiple times<br>
> to different values. We need to test this on another sy4527 crate to see<br>
> if this is a systemic problem or just a bad crate. When it is convenient<br>
> please send us the other crate and we will continue 7030TN testing, and<br>
> see if the issue manifests itself on the second crate.<br>
> *<br>
> Note in the pics below that channel 01.028 SVMax is set to 3000 V in the<br>
> top screen, which is the GECO interface, while below CSS is displaying 600<br>
> V for the same variable.<br>
> GECO<br>
> CSS<br>
> Regards,<br>
> Marc<br>
> <br>
> --------------------------------------------------------------------------<br>
> <br>
> From: Dsg-hallc_controls <dsg-hallc_controls-bounces@jlab.org> on behalf<br>
> of Pablo Campero Rojas <campero@jlab.org><br>
> Sent: Thursday, July 25, 2019 1:49 PM<br>
> To: dsg-hallc controls <dsg-hallc_controls@jlab.org><br>
> Cc: Patrizia Rossi <rossi@jlab.org><br>
> Subject: [Dsg-hallc_controls] CAEN-HV boards test results<br>
> <br>
> <br>
> Hello Simona,<br>
> <br>
> We developed an EPICS based program and CSS screens to test the three<br>
> CAEN-HV boards that brought to the DSG-lab last week.<br>
> <br>
> From the test performed, we found that all three boards have CAEN software<br>
> issues and one of them has a hardware issue as well.<br>
> <br>
> Software issues:<br>
> <br>
> 1. Some channels' parameters like "I[mon]", "V[set]", V[Rdwn]", "I[max]",<br>
> "V[mon]" arbitrarily change from its pre-set values (set values at<br>
> test time) to random values.<br>
> 2. Discrepancies between GECO-2020 (CAEN Control software) and the PVs<br>
> values (Generated by CAEN EPICS Server) displayed for some of the<br>
> above mentioned variables.<br>
> <br>
> However, we were able to ramp all channels to the set voltage after we<br>
> solved these CAEN software issues by re-entering set values, re-setting<br>
> power On/Off channels, and sometimes resetting the built-in CAEN EPICS<br>
> Server.<br>
> <br>
> Hardware issue:<br>
> <br>
> 1. Channel 22 of HV board (S/N: 556) does not to ramp up.<br>
> <br>
> We recommend sending HV board S/N: 556 back to CAEN.<br>
> <br>
> Attached below is a table with the summary of the findings for each board<br>
> tested. To see detailed results from the test, you are most than welcome<br>
> to come and visit us in the DSG room EEL-121.<br>
> <br>
> Best Regards,<br>
> <br>
> Pablo<br>
> <br>
> <br>
> <br>
> +-------------------------------------------------------+<br>
> |Board| Board |Serial|Hardware|Software| Comments |<br>
> | # | Model |Number| Issue | | |<br>
> | | | | | Issue | |<br>
> |-----+----------+------+--------+--------+-------------|<br>
> | | | | | |For some |<br>
> | | | | | |channels, |<br>
> | | | | | |V[set] stuck |<br>
> | | | | | |at a |<br>
> | | | | | |different |<br>
> | | | | | |value than |<br>
> | | | | | |the pre-set |<br>
> | | | | | |value during |<br>
> | | | | | |the test. |<br>
> | | | | | | One of the |<br>
> | | | | | |channels |<br>
> | | | | | |tripped, |<br>
> | | | | | |because |<br>
> | | | | | |"Imax" value |<br>
> | | | | | |changed from |<br>
> | | | | | |its set value|<br>
> | | | | | |during test. |<br>
> | | | | | | |<br>
> | | | | | |Discrepancies|<br>
> | | | | | |between |<br>
> | | | | | |GECO-2020 |<br>
> | | | | | |values and |<br>
> | 1 |CAEN-A1535| 775 | | x |EPICS PVs |<br>
> | | | | | |values for |<br>
> | | | | | |I[mon]. |<br>
> | | | | | | |<br>
> | | | | | |All affected |<br>
> | | | | | |channels |<br>
> | | | | | |ramped to |<br>
> | | | | | |desired set |<br>
> | | | | | |value after |<br>
> | | | | | |the set |<br>
> | | | | | |values were |<br>
> | | | | | |re-entered |<br>
> | | | | | |and power |<br>
> | | | | | |On/Off reset.|<br>
> | | | | | | |<br>
> | | | | | |For the |<br>
> | | | | | |recovery of |<br>
> | | | | | |some |<br>
> | | | | | |channels, |<br>
> | | | | | |reset of the |<br>
> | | | | | |built-in CAEN|<br>
> | | | | | |EPICS Server |<br>
> | | | | | |was required.|<br>
> |-----+----------+------+--------+--------+-------------|<br>
> | | | | | |For some |<br>
> | | | | | |channels, |<br>
> | | | | | |V[set] value |<br>
> | | | | | |changed from |<br>
> | | | | | |its pre-set |<br>
> | | | | | |value. |<br>
> | | | | | | |<br>
> | | | | | |For variable |<br>
> | | | | | |V[mon], found|<br>
> | | | | | |discrepancies|<br>
> | | | | | |between |<br>
> | | | | | |GECO-2020 |<br>
> | 2 |CAEN-A1535| 776 | | x |values and |<br>
> | | | | | |EPICS PVs |<br>
> | | | | | |values. |<br>
> | | | | | | |<br>
> | | | | | |All affected |<br>
> | | | | | |channels |<br>
> | | | | | |ramped to |<br>
> | | | | | |desired set |<br>
> | | | | | |value after |<br>
> | | | | | |the set |<br>
> | | | | | |values were |<br>
> | | | | | |re-entered |<br>
> | | | | | |and channels |<br>
> | | | | | |were reset. |<br>
> |-----+----------+------+--------+--------+-------------|<br>
> | | | | | |Set values |<br>
> | | | | | |for V[set], |<br>
> | | | | | |V[Rdwn] and |<br>
> | | | | | |V[max] |<br>
> | | | | | |changed (PVs |<br>
> | | | | | |and value in |<br>
> | | | | | |GECO-2020) |<br>
> | | | | | |from its |<br>
> | | | | | |pre-set |<br>
> | | | | | |values during|<br>
> | | | | | |the test. |<br>
> | | | | | | |<br>
> | | | | | |Re-entering |<br>
> | 3 |CAEN-A1535| 556 | x | x |values for |<br>
> | | | | | |V[set], |<br>
> | | | | | |V[Rdwn] and |<br>
> | | | | | |V[max], then |<br>
> | | | | | |reset power |<br>
> | | | | | |On/Off |<br>
> | | | | | |allowed ramp |<br>
> | | | | | |up all |<br>
> | | | | | |channels to |<br>
> | | | | | |the desired |<br>
> | | | | | |set voltage |<br>
> | | | | | |except for |<br>
> | | | | | |channel 22, |<br>
> | | | | | |which did not|<br>
> | | | | | |ramp up. |<br>
> +-------------------------------------------------------+<br>
<br>
<br>
<br>
<br>
-- <br>
Brad Sawatzky, PhD <brads@jlab.org> -<>- Jefferson Lab / Hall C / C111<br>
Ph: 757-269-5947 -<>- Fax: 757-269-5235 -<>- Pager: brads-page@jlab.org<br>
The most exciting phrase to hear in science, the one that heralds new<br>
discoveries, is not "Eureka!" but "That's funny..." -- Isaac Asimov<br>
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