After recording has begun, the circular buffer will be filled and as the case maybe permanently overwritten with the lost of the oldest data
During this time, the data are shown as permanently changing numbers
or characteristics in the presentation window.
Recording is stopped using one of the following trigger types:
Signal 
	 trigger
	Trigger of go below or above defined data values or/and of the error 
	 detection.
External 
	 trigger:
	Trigger of a injected reference signal (the trigger input has TTL level).
Manual - by clicking on the stop button.