Hello Jeff, regarding your comment quoted below,
As I mentioned, I was not quite sure about the DM43, but on the DM44 (that has differential Delta time measurement), what it does is alternating 2 different delayed sweeps (one controlled by the o'scope's main delay time base multiplier, and the other, controlled by the Delta time knob (on the DM44 itself) so, yes, it really triggers the B sweep at 2 different points of the A sweep.
The net result is that, when you are in "A Intens" horizontal mode, you have 2 intensified segments (and not just one).
When you switch over to B Dly'd horizontal mode, you see the 2 delayed sweeps superimposed on the screen, which you turn the delta time control to make them coincide.
You read directly the time difference on the DM44's display, in the same unit as the A sweep time base / div.
While the display works great and is fairly consistent on both the "A Intens" and "B dly'd" modes, it gets confusing when you are in MIX mode (all that with the DM44).
As I learnt a bit more about the DM43 operation, It seems it doesn't superimpose on the screen 2 delayed sweeps at different delays (as the DM44 does) and I think it's safe to assume now that the artifact that Dmitri is seeing is not linked to the DM43's time measurement (but again, it wouldn't hurt to make sure it was not set to that function, to rule out the DM43 as a possible cause).
KRgrds,
Fabio
..., Also
what Fabio said is totally new to me, the meter set to time can affect the
triggering ? Seems odd to me but there are plenty of things much odder.
Knowing how Tek designs stuff there must be a good reason for this
interaction.
Hello Jeff,
Fabio Trevisan