EPT-HET PQM

 

 

(1) The qualification EMC tests were performed from 17th of April to 8th of May 2015. An exception was the E-field characterization. This test could not be concluded completely due to the noise floor issues at the test facility.

 

 

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(2) The vibration tests were performed from 18th to 19th of may 2005.An anomaly was seen after the post-vibration functional test. After extensive investigations the root cause was confirmed to be the mechanical damage in some of the joints of the electronic parts on the boards due to the fatigue resulted from the vibration tests, see (a)&(b).

 

 

 

 

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a)

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b)

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(3) After the failure during the vibration tests, the EPT-HET PQM was repaired in such a way that could tolerate

 

the thermal balance tests from 10th to 22nd of July 2015. But it is decided that this re-worked PQM

 

was not good enough for going through the thermal cycling tests. So, NO thermal cycling tests were performed

 

on EPT-HET PQM.

 

 

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