Re: Encoder Cable?

Braided shields are better than spiral sheields

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
> Abby Katt wrote:
>
> >Is Microphone cable good for hookin' up encoders? Or should I be
> >looking for another kind of cable? Cable is damned expensive
> >(especially since it tends to be sold in reels). Anywhere, here's
> >what I am looking to order:
> >
> >4 core microphone cable, pvc sheath (50M reel!):
> >Four 14/0·12mm tinned copper stranded conductors, PVC insulated
and
> >lapped with polythene tape. Core colours are white, red, green and
> >blue. Single screen close lapped 48/0·15mm tinned copper wire.
> >Overall sheath grey PVC. Capacitance 120pF/m. Dia 4·7mm.
> >
> >What about the capacitance? Is that going to block encoder
signals?
> >
> >This is for use with Geckos and those big-big servo motors on
Dan's
> >site. I'm going to use regular 3-strand electrical cable (the nice
> >bright orange type they use for outdoor stuff like electric
> >lawnmowers) high ampage, to deliver the power to the motors.
> >
> >
> That sounds like digital audio cable. it should work for encoders
just
> fine.
>
> Jon