Keysight 3000T: new trigger capability question

[peter-ger]

Hello guys,

I'm wondering how the "must intersect" Trigger works.
In the manual I found a comparison of needed steps: on the one side "draw box and select intersect" and on the other side (traditional scopes) "Determine what trigger makes the most sense for the signal you are trying to isolate. In this case, we’ll try a rise-time trigger irst....".  That would mean, using "must intersect" do not need to use regular trigger.

Thats confusing.

Well, actually there is no particular section on the signal which can be triggered on if the waveform is not stable viewable (=not triggered).
Even if i press the stop button, untriggered signal is untriggered signal. The waveform is then just captured randomly.
How could the scope trigger only on a specific region of a signal? Which region? After 2ms? After an edge? After whatever? This would mean: if I select a region in the middle, every edge would be crossing through the region.

For my understanding:
I can imagine, that there must be triggered condition already set and triggering before using "must intersect" or "must not intersect" functionality. If so, that would mean, that this is just a filter function (not standalone trigger) which would filter all the already triggered waveforms and display only those which "intersect" with the selected region.

In fact, all videos presenting the "must intersect" feature are relying on stable waveforms (=triggered). Who owns already the new 3000T (or even the older 4000 X-Series)? How do the "must intersect" trigger exactly work?

Regards,
Peter

[mike_kawasaki]

For my understanding:
I can imagine, that there must be triggered condition already set and triggering before using "must intersect" or "must not intersect" functionality. If so, that would mean, that this is just a filter function (not standalone trigger) which would filter all the already triggered waveforms and display only those which "intersect" with the selected region.

In fact, all videos presenting the "must intersect" feature are relying on stable waveforms (=triggered). Who owns already the new 3000T (or even the older 4000 X-Series)? How do the "must intersect" trigger exactly work?

Peter, my understanding is the same.  The scope triggers and then analyzes the waveforms against the 'must intersect' and 'must not intersect' functionality.  This is explained in a technical Keysight document http://literature.cdn.keysight.com/litweb/pdf/5991-1107EN.pdf .

Hope this helps,
Mike