1/ The user can activate and deactivate the system by pushing an on/off button.

2/ The sound emitted by the bearing can be observed by placing one end of a wooden stick against the ear and its other end against the bearing housing.

3/ In the event of mechanical or electronic failure, complete and easy access is provided by removing the base plinth of the recorder.

4/ A pull-down menu is selected with the keyboard by entering the first character of the menu name.

5/ Files may be selected with a mouse by pointing and clicking on the file names.