Triggering

tinskip

This is a very basic question, but here it goes.  I am using SignalScope to display an audio waveform.  In this case 440 Hz sine wave.  The display shows an amplitude of about 1 FS, with the waveform bouncing all over the place for lack of re-triggering the scope scan.  Now, I have enabled triggering, created a trigger on the same input, set the threshold to 10 mFS, trigger on positive, auto mode.  Waveform still bouncing all over the place.  I have tried just about every combination of mode, threshold, and slope to not avail.  What am I missing?

tinskip

OK.  I'm going to answer my own question: You have to select a trigger in the Display tab.