Re: [CAD_CAM_EDM_DRO] Re: EMC problem/question

currinh@... wrote:

> Jon:
>
> I got a chance to try "freqmod" as you suggest. After some futzing I
> was able to get good motion from both X & Y. The P parameter was the
> original problem. I went down to 100 and then started back up getting
> to around 500 with good motion. I did set a dwell of .0005" which
> stopped the dithering. I think I'm getting faster motion from freqmod
> than steppermod but as yet have no numbers.

Yes, it should.

> I didn't put the
> opto-isolation back in to see if it works with freqmod though.

I suspect it will have the same trouble. You need to send the step pulse
through with the same polarity as you have with the direct connection.

Jon