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<p class="MsoNormal">Hello Simona,<span style="mso-tab-count:10"> </span></p>
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<p class="MsoNormal"><span style="mso-tab-count:10"></span><span style="font-size: 12pt; text-indent: 0.25in;">We developed an EPICS based program and CSS screens to test the three CAEN-HV boards that brought to the DSG-lab last week.</span></p>
<p class="MsoNormal"><span style="font-size: 12pt; text-indent: 0.25in;"></span><span style="text-indent: 0.25in; font-size: 12pt;">From the test performed, we found that all three boards have </span><u style="text-indent: 0.25in; font-size: 12pt;">CAEN software
issues</u><span style="text-indent: 0.25in; font-size: 12pt;"> and one of them has a hardware issue as well.</span></p>
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<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"> <u>Software issues:<o:p></o:p></u></p>
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<li>Some channels’ parameters like “I<sub>mon</sub>”, “V<sub>set</sub>”, V<sub>Rdwn</sub>”, “I<sub>max</sub>”, “V<sub>mon</sub>” arbitrarily change from its pre-set values (set values at test time) to random values.
<o:p></o:p></li><li>Discrepancies between GECO-2020 (CAEN Control software) and the PVs values (Generated by CAEN EPICS Server) displayed for some of the above mentioned variables.</li></ol>
<span style="font-size: 12pt;"> However, we were able to ramp all channels to the set voltage after we solved these CAEN software issues by re-entering set values, re-setting power On/Off channels, and sometimes resetting the built-in CAEN EPICS Server.</span><br>
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<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"> <u>Hardware issue:<o:p></o:p></u></p>
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<li>Channel 22 of HV board (S/N: 556) does not to ramp up.</li></ol>
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<p class="MsoNormal"><span style="font-size: 12pt;">We recommend sending HV board S/N: 556 back to CAEN.</span><br>
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<p class="MsoNormal"><span style="font-size: 12pt;">Attached below is a table with the summary of the findings for each board tested. To see detailed results from the test, you are most than welcome to come and visit us in the DSG room EEL-121.</span></p>
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Best Regards,<o:p></o:p></p>
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Pablo<o:p></o:p></p>
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<b>Board #<o:p></o:p></b></p>
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<b>Board Model<o:p></o:p></b></p>
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<b>Serial Number<o:p></o:p></b></p>
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<b>Hardware Issue<o:p></o:p></b></p>
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<b>Software<o:p></o:p></b></p>
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<b>Issue<o:p></o:p></b></p>
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<b>Comments<o:p></o:p></b></p>
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1<o:p></o:p></p>
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CAEN-A1535<o:p></o:p></p>
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775<o:p></o:p></p>
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x<o:p></o:p></p>
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For some channels, V<sub>set</sub> stuck at a different value than the pre-set value during the test.
<span style="mso-spacerun:yes"> </span>One of the channels tripped, because "Imax" value changed from its set value during test.<o:p></o:p></p>
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Discrepancies between GECO-2020 values and EPICS PVs values for I<sub>mon</sub>.<o:p></o:p></p>
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All affected channels ramped to desired set value after the set values were re-entered and power On/Off reset.
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For the recovery of some channels, reset of the built-in CAEN EPICS Server was required.<o:p></o:p></p>
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2<o:p></o:p></p>
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CAEN-A1535<o:p></o:p></p>
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776<o:p></o:p></p>
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x<o:p></o:p></p>
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For some channels, V<sub>set</sub> value changed from its pre-set value.<o:p></o:p></p>
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For variable V<sub>mon</sub>, found discrepancies between GECO-2020 values and EPICS PVs values.<o:p></o:p></p>
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All affected channels ramped to desired set value after the set values were re-entered and channels were reset.<o:p></o:p></p>
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3<o:p></o:p></p>
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CAEN-A1535<o:p></o:p></p>
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556<o:p></o:p></p>
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x<o:p></o:p></p>
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x<o:p></o:p></p>
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Set values for V<sub>set</sub>, V<sub>Rdwn</sub> and V<sub>max</sub> changed (PVs and value in GECO-2020) from its pre-set values during the test.<o:p></o:p></p>
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Re-entering values for V<sub>set</sub>, V<sub>Rdwn</sub> and V<sub>max</sub>, then reset power On/Off allowed ramp up all channels to the desired set voltage except for channel 22, which did not ramp up.<o:p></o:p></p>
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