Calculation Options Window

The Calculation Options window lets you choose which system(s) in the failure modes and reliability analysis (FMRA) will be calculated and which application (Xfmea or BlockSim) will be used to perform the calculations. This window will appear when you choose FMRA > RAM Analysis > Calculate (Reliability) and there is more than one system in the FMRA or there are records synchronized with BlockSim.

In the What items do you want to calculate? area you can choose to perform calculations only on the system that is currently selected, or you can choose to calculate all the systems in the hierarchy.

In the Calculate Method area, two options will be available if there are records synchronized with BlockSim:

The Calculate using BlockSim option is available only when there are records in the FMRA hierarchy that are currently synchronized with BlockSim. If you calculate using this option, the software synchronizes all records and then returns results based on BlockSim's representation of the FMRA, which uses synchronized RBDs.
The Calculate using current application option will use Xfmea to perform the calculations. This means that the software will assume a reliability-wise series configuration among all the records in the FMRA. For example, the software will assume that the occurrence of any one failure, or the failure of any one subsystem, is sufficient to make the entire system fail.