Isolation Probabilities Using Testing Only - % Column
Description
This column is listed under the Isolation Probabilities Using Testing Only label in the Fault Group Size Percentages section of the Fault Isolation Report. Each entry in this column contains the probability that the given diagnostic sequence will isolate to a fault group containing the number of replaceable items indicated in the corresponding row in the Size column.
Calculation
This Test limit can be calculated by summing the aggregate failure probabilities associated with each isolated fault groups of the given size and then dividing the sum by the Total Probability Detected, as shown in the following equation:
where
x
=
the specified number of replacement items (Size column)
Note: Because fault isolation statistics are calculated over the set of detected failures, the Test limits in this column will add up to 100.00 even when the Total Probability Detected is less than 100.00 for the diagnostic sequence generated in the current diagnostic study.
