Isolation Effectiveness - a metric, first developed by DSI in the 1990s, that represents how effectively the fault isolation capability of a given diagnostic sequence is able to achieve a given fault isolation goal. Although the general form of this metric allows it to be calculated as a deviation from any specified isolation goal (e.g., fault groups whose Mean Time to Replace is less than 30 minutes), the Fault Group Size Percentages section of the Fault Isolation Report only includes a version of this metric where the goal is isolation to a fault group containing a single repair item.
The general form of this metric is as follows:
where
goal
=
the specified fault isolation goal
f(FG)
=
the Test limit that is to be compared to the specified goal
