Reviewing Markov State and Transition Properties
For ease of viewing, you can resize the Markov Diagram pane using the splitter control, which appears when you place the mouse cursor between the two panes. If horizontal and/or vertical scroll bars are present in the Markov Diagram pane, you can use them to view hidden parts of the diagram.
Finally, you can zoom in and out by right-clicking in an empty area of the diagram and selecting a zoom option. Or, you can press and hold down the Ctrl key while rotating your mouse wheel.
This sample Markov diagram is modeling the sequence of events leading to a memory failure. The memory begins in an operational state. If one SRAM SIM fails, the tablet PC operates in a degraded mode. If all three SRAM SIMs fail, the tablet PC fails.
1. In the Markov Diagram pane, double-click State5. The Calculation Properties window for this state opens.
On the General page, you set one of three conditions for the state: Good, Failed, or Degraded.
If you want to calculate costs, you can also associate a gain or loss that occurs when the system is in this state.
2. In the left pane, select the Results page. This page displays the most recent calculated results for this state. If calculations are not yet available, this page is empty.
3. Click Cancel to close the window for the state.
4. Select > . The Markov States window opens. It displays all of the states currently in the diagram. In this window, you can edit the data for all states in one place, which is useful when you have a large Markov diagram and need to manage many states.
5. Click Close to close the Markov States window.
6. Place the mouse cursor over the left-most arrow between State5 and State10 until the cursor changes to a four-sided arrow; then, double-click.
The Calculation Properties window for this transition opens. On the General page, you see that a rate of 0.125 is set.
7. In the left pane, select the Results page. This page displays the most recent calculated results for this transition. If calculations are not yet available, this page is empty.
8. Click Cancel to close the window for the transition.
9. Select > . The Markov Transitions window opens. It displays all of the transitions currently in the diagram.
In this window, you can edit the data for all transitions in one place, which is useful when you have a large Markov diagram and need to manage many transitions.
10. Click Close to close the Markov Transitions window.