In Diagnostics Select "Options" Panel (right hand mouse button) and "Interpetation" As shown
Options to the Interpretation panel of the Diagnostic Study Options dialog, allow the Analyst to control the extent to which failure modes influence diagnostics:
Enable Hybrid Inferencing – this option makes the most aggressive use of defined failure modes, including chained inferences when testing for a test that is “always affected” by a given failure mode. (Note: this is the way that the diagnostics have worked in all previous versions of eXpress)
Disable Hybrid Inferencing – this option takes a less aggressive approach to failure modes, supporting failure mode testing and hybrid probability calculation, but never chaining inferences (treating all failure modes as if they “sometimes affected” their associated functions—regardless of the settings in the model).
Ignore Failure Modes – this option takes only functions into consideration during diagnostics. Tests whose coverage is defined either partially or fully in terms of failure modes cannot be specified as candidates for either fault detection or isolation when this option has been selected (a new error message, described above, will appear when you attempt to calculate diagnostics using failure-based tests). Functional probabilities will be based on function and object Reliability Test limits.
