Two calculation modes are available: Steady-state and Time-dependency.

Steady-state calculation mode

This mode calculates and displays system parameters (state probabilities, system availability, reliability etc.) for a Steady State.

Steady State is state where time t is approaching infinity and state probabilities are approaching final probabilities. It is assumed that final probabilities exist and that they do not depend on initial state probabilities.

Calculation is based on linear equations solving.

To run this calculation mode, choose “Steady-State Calculation” from Calculation menu.

Time-dependency calculation mode

This mode calculates and displays system parameters (state probabilities, system availability, reliability etc.) for time points from Start time to End time (see Diagram properties).

Calculation is based on fourth-order Runge-Kutta method for differential equations.

To run this calculation mode, choose “Time Dependency Calculation” from Calculation menu.