Hi Dana, On 2019-12-25 17:14, Dana Whitlow wrote: > Thanks, Bob, for clarifying what Magnus means by "microstepper". To me, > the term has always referred to operation between the discrete steps defined > by the polepieces and windings. One can do it (albeit poorly) with many > stepper > motors. There is a class of servo motor in which the designers of the > magnetics > went to great lengths to avoid salient poles (think magnetic detent-like > effects), > which are meant to operate with I & Q controlled currents. Well, I was completely in T&F thoughts when doing my posting, and assumed the term to be understood here for what I intended. > > BTW, the "phase noise" associated with a DDS is not entirely random. In > fact > most is usually from systematic effects and can be eliminated or at least > dodged > by restricting one's choice of frequencies.
It is completely systematic. However, for a phase/frequency microstepper you want the full range of narrow frequency to be directly available, with high resolution. So, therefore my question to collect input from others. Yes, so when phase-noise is not complete crap but somewhat useful, I would not like to completely ruin it and hence trying to ask for input. I have an few ideas now that I want to try out. If I where not so busy cleaning up the lab to make it accessable and thereby useful, I would throw myself at the task of testing it. Also, being able to locate where I have the Red Pitaya helps. Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
