STEP PQM

(1) The qualification EMC tests were performed successful from 29th to june 15th of july 2015.

The E-field characterization was performed from 28th to 29th ofJuly 2015 with adequate noise

floor acquired by the test facility.

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(2) Thermal balance tests were performed from 10th to 21th of August 2015

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3) STEP and EPT-HET have very similar design for their electronic boards in terms of the mass and the dimension. Based on the lessons learned from the failure in the EPT-HET PQM vibration tests, two strategies were applied for the STEP PQM vibration tests:

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(a) Notching the RV profile in the susceptible frequencies.

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(b) Increasing the stiffness of the boards by using separate structural stiffeners.

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The vibration tests performed from 30th of September to 2nd of October 2015.The post-vibration functional test was successful, but due to the slippage, there was a shift more than 20% in the accelerometer responses.

 

(4) Thermal cycling tests were performed from 12th to 22th october 2015.

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