Re: [CAD_CAM_EDM_DRO] Re: CNC Pulse jitter?

> Rich,
> Are you running EMC on that stepper system? I have observed lots of
> "strange pulse phenomena" with EMC.
> It occurs all over the pulse train and the amount can be MUCH greater than
> the 1 -2% that Mariss mentioned.
> I tested EMC on a variety of PCs and clock speeds and they all exhibited it
> to some extent. What I observed in the pulse train were drastic glitches
> along with very small but ever present variations that you'd expect from
> RTLinux. I think you're seeing just the small variations mainly with your
> analog scope. My damped and undamped test setups were monitoring rotary
> encoder outputs as well and motor motion was only effected by the large
> glitches. I couldn't see any periodicity to the glitch occurrences, so it
> might take some doing to find the source(s) of the problem.