The Tests to Isolate metrics appear in the Tests to Detect/Isolate a Failure section of the Fault Isolation Report. These metrics describe the number of tests required to isolate a primary detected failure using the diagnostic sequence in the current diagnostic study.
Minimum
The Minimum Isolation Tests is the smallest number of tests needed to isolate a failure that has been detected by the current diagnostic sequence.
Maximum
The Maximum Isolation Tests is the largest number of tests needed to isolate a failure that has been detected by the current diagnostic sequence.
Average
The Average Isolation Tests is calculated by summing the number of isolation tests needed to diagnose each isolated fault group and dividing the sum by the total number of isolated fault groups:
the number of tests needed to isolate a detected failure to the ith isolated fault group
Expected
The Expected Isolation Tests is the mean number of tests to isolate a detected failure that would be achieved if the the current diagnostic sequence were to be employed with a fielded system. The metric is calculated by multiplying the number of isolation tests needed to diagnose each isolated fault group by the fault group's aggregate failure probability and then summing the results for all isolated fault groups:
