10-08-2015, 10:37 AM
(10-08-2015, 10:08 AM)ppppenguin Wrote: Regarding fuzzy trace, are you looking at trigger jitter or astigmatism? Or even simple lack of focus? Some scopes are sharper than others. You could cut yourself on the trace of my 547. The much later 24xx series are nothing like as sharp though still more than good enough for all purposes.
Of course, the 547 is a 50MHz 'scope, and some of those 24-series 'scopes were 200, 300 or 400MHz. What looks like softness is sometimes noise - engaging the BW-limit mode confirms that. Even my humble 100MHz Fluke Combiscope is slightly fuzzy when not in 20MHz BWL mode.
And let's not get into the whole "digital 'scopes are noisier than analogue 'scope" debate
But yes, there are many variables...
