![]() To switch to compact view mode, right-click the frame and select View Mode > Compact from the popup menu. Click on the OK button to close the window. Fill in the duration constraint of the selected time on the Constraint field. In the Add Duration Constraint window, select the appropriate Start timeand End time from the drop down menu. In the Duration Constraints tab, click on the Add… button.To set the duration constraints of a lifeline, right-click on the lifeline and select Edit Lifeline… from the pop-up menu.Note that as time units may be unnamed, when selecting start/end time you should check the relative position of the time unit in the list.ĭuration constraint is used to show the duration limitation of a particular lifeline over a period of time. ![]() When the Add Time Message window pops out, enter name and select the start lifeline, start time, end lifeline and end time for this time message. In the Edit Frame window, open the Time Messages tab and click Add… button. To add time messages to frame, right-click the timing frame and select Edit Frame… from the pop-up menu. The group of time instances is moved at once. Release the mouse button when reached the target state/condition. Mouse over the time instances and you will see a blue line above them, click and drag on the blue line. You can also move a group of time instances that are at the same state/condition. Move your mouse pointer over the line segment of a time instance, click and drag it. To add state/condition to a lifeline, right-click the lifeline and select Add State/Condition from the pop-up menu.ĭouble click on the name of the state/condition to rename it. Double-click on a time unit to rename it. Repeat the step to add as many as time units you need. To add time unit to a timing frame, right-click the frame and select Add Time Unit from the pop-up menu. To add lifeline to a timing frame, right-click the frame and select Add Lifeline from the pop-up menu.ĭouble-click on the name of the lifeline to rename it. The name of a timing frame is usually preceded by the sd keyword. To create timing frame in a timing diagram, click Timing Frame on the diagram toolbar and then click on the diagram.ĭouble click on the top left corner of the frame to rename it. You can also create a similar circuit that will detect falling edges. The Location field enables you to select a model to store the diagram. Timing diagram for 1-input circuit (Source: Elizabeth Simon) Did you notice how we get a low pulse every time that input A transitions from 0 to 1 but not when the transition is from 1 to 0 This circuit is called a rising-edge detector.
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