For life-stress data only.
You can specify additional life lines to be plotted on life vs. stress plots in Accelerated Life Testing by clicking the Life Lines link on the plot sheet control panel. The Specify Life Lines window will open.
This window allows you to define up to ten additional life lines to be shown on life vs. stress plots. For each life line, enter the unreliability value. You can enter values manually or use the up and down arrows beside each field to increase/decrease the value. You can keep previously entered values without plotting them by simply clearing the appropriate check boxes. You can select to show or hide confidence bounds for each life line.
To use your current settings by default on life vs. stress plots, click the Set As Default button. You can reset these settings by clicking Reset Application Settings on the Reset Settings page of the Application Setup.