Re: MaxNC modifications

Tim, The route you took Tim sure looked ugly :) - but it was the best way
out
Ferrite rings around which you wrap a few turns of a cable you wish to clean
up are usually used to get rid of parasitic HF from a lead.
A simple example would be to use it on a cable carrying DC or low frequency
AC to keep it clean. It can be used on cables carrying non DC but care must
be taken not to interfere with the AC signals or other type of signals that
you do want to pass.
Shielding, 90' crossing of wires which have to cross and good layout -
should do it in most cases.
I think though, that everyone is now thinking along the lines of software in
Jon's problem - may need to shield that too:)
Mo
]

> A problem I had that drove me crazy was phantom steps. It seems that RF

off

> the drive circuitry was inducing a signal into the step wiring on one of

my

> axis. It was manifesting as lost steps when it really was unwanted steps.

I

> ended up curing this by shielding the wires in a wrap of aluminum foil and
> grounding it at one end. Maybe you could also use ferrite filters?? (can

one

> of you electronic gurus help explain if this would be a useful method?

Jon,