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I have a large amount of supplier FIT data that is more up to date than the 217 FN2 failure rate data included in the libraries of WQS. I have loaded a lot of that in as specified failure rates and updated the data into a user library. The problem is by using so many specified values the mission calculations based on the mission profile are not adjusting for temperature changes.
I have updated my user library using the import wizard for parts with an updated lambda B or base failure rate on 3 parts successfully. Then I tried to use the same import template to load several hundred parts and none of the lambda Bs updated. I can change a part from tagged to untagged or specified failure rate or calculated failure rate. I am very puzzled why I could change lambda B once but not again.
Has anybody done this? If you have or you have suggestions please let me hear from you.
BTW - I exported my user library into an excel file and none of the lambdas or Pi values are present in the export or in the list of available fields.
Tim,
If this is still an issue for you, I recommend that you open a case with PTC Technical Support for assistance.