Patent ID: 7146289

Claim:
A method to evaluate whether a statistical time delay (TD) between a first event (CS) and a second event (RM) of a device under test (DUT) is better than a test limit (TL) comprising the steps Performing a minimum number N of tests and evaluating the individual time delay (TD) from each test, Modeling a first probability distribution (P 1 ) of the evaluated time delays (TD) as a function of the elapsed time from the first occurrence of the first event (CS) to the first occurrence of the second event (RM), Obtaining a second probability distribution (P 2 ) of the evaluated time delays (TD) as a function of the elapsed time from the first occurrence of the first event (CS) to the N-th occurrence of the second event (RM) by performing the N-1-th self convolution of the first probability distribution (P 1 ), Performing a statistical transformation (ST) in order to obtain a third probability distribution (P 3 ) of the evaluated time delays (TD) as a function of the N-th occurrence of the second event (RM), Deciding to pass the device under test (DUT), if a certain percentage of the area of the third probability distribution (P 3 ) is on a good side (GS) of the test limit (TL 2 ), or Deciding to fail the device under test (DUT), if a certain percentage of the area of the third probability distribution (P 3 ) is on a bad side (BS) of the test limit (TL 2 ), otherwise Repeating the steps of the method with an incremented number N of tests.