FastScan and FlexTest Reference Manual, V8.6_4
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Analyze Fault Command Dictionary
The fault analysis which is performed by the Analyze Fault command consists of
the following actions:
1. A message is given if the selected fault has been nofaulted.
2. A message is given that will identify if the fault is in the current fault list. If
the fault is in the current fault list and the fault is the representative
member, its fault classification is displayed.
3. If the fault was not identified as included in the active fault list, the basic
fault analysis is performed that determines if the fault can be classified as
unused, tied, blocked, or detected by implication.
4. If the fault category is detected by simulation, detected by implication, or
unused, a message is given and the analysis is terminated. You can override
the termination by using the -Continue switch.
5. If the fault category is tied, all sources of the tied condition are identified
and the analysis is terminated.
6. If the fault category is blocked, all blockage points (100 maximum) are
identified. For each blockage point, all sources of the tied conditions
causing the blockage are identified. The analysis then terminates.
7. The states that result from all constrained pins and stable non-scan cells are
calculated.
8. If the fault site is now prevented from attaining the necessary state, a
message is given indicating the fault is tied by constrained logic, all sources
of the tied condition are identified, and the analysis then terminates.
9. An analysis is made to identify all blockage points (100 maximum) and all
potential detection points (25 maximum).
10. If there are no potential detection points, the blockage points are identified
and for those points blocked by tied logic, all sources of the tied condition
are identified. The analysis then terminates.