ETA module initiation

You may use different ways to enter the RAM Commander ETA module:

•	In the list of projects, select project, right-click on it and choose “ETA” option from the pop-up menu.

•	Open project, from the Modules menu choose ETA.

•	Open project, click Modules at the left button-bar, press ETA button.

In the ETA module, you get the list of existing ETA diagrams.

About diagrams:

•	There can be an unlimited number of diagrams in the project.

•	All diagrams in the same project use the same events library.

To edit an existing diagram, select it in the list and click OK.

To create a new diagram, enter it’s name in the edit box and click OK.

You will get an ETA diagram screen:

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Diagram consists of events (vertical columns) and gates. The first event is initial event (the event which consequences should be analyzed). The last (rightmost) vertical column is consequences column which contains all possible outcomes. Between them regular events are situated.

A variety of available options: scrolling, zooming, etc. help you to view the diagram in the best possible way. See each option description for better understanding.

When creating a new diagram, diagram properties should be set up:

•	from the ETA menu, choose Properties.

- or -

•	double–click an empty (white) space on the diagram

The following properties may be defined:

Field	Field description
Description	Tree description
Author	Author name or names
Time	Mission time (hours) for Q(t) calculation
Alignment	Central - or Top - balanced tree alignment (automatic arrangement should be checked)
Show code	If checked, element code will be displayed on the element box
Show name	If checked, element name will be displayed on the element box
Show probability	If checked, element probability will be displayed on the element box
Results display	Choose Q mean (steady-state probability) or Q(t) (probability at time t) calculation

Having defined your ETA diagram properties, you can now start creating the ETA diagram.