Open Immunity Test File 
From the Immunity view, open a previously-stored Immunity test file (*.imuTest).
To open the test file, click 
> Open Immunity Test File. Select the file and open it.
- By default, Avionics test files are stored in the "Documents" folder on your computer and are organized by instrument type. For example, C:\Users\<user_name>\Documents\Keysight\PathWaveACSource\Immunity\.
- Within the AC Source application, Immunity test files are stored with an *.imuTest file extension. An error message will be displayed if an invalid or corrupted file is loaded.