Re: Encoder Indexer Option

> braidmeister wrote:
>
> >3 Questions still floating out there:
> >
> >1. Is there any reason why I would need an Index feature on the
> >encoder for the Bridgeport? Doesn't this have something to do with
> >threading/tapping? (I will be running Mach2...is this a moot

> >
> >
> It's not necessary.
>
> >2. If running sheilded lines less than 8 feet long, is there

> >justification to go to a differential encoder? It seems to me that

> >the case of US Digital, that it would be a PITA to convert a shaft-
> >type encoder to my motors...The ideal setup would be a hole-thru
> >design with a 5/8" encoder.
> >
> >
> I don't think there's justification for it. How well they work

> depend on the situation with this machine and whatever is in the

> the shop. As far as I know, most people on this list use single-

> encoders.
>
> >3. If I did select a differential encoder, is there any bearing on
> >the CPR rating? I mean, would there be a difference between a 1000
> >CPR non-diff and a 1000 CPR differential?
> >
> >
> No difference in the information, only how it's transmitted (think

> vs. FM).
>
> >-Brady
> >
> >
> Hope this helps
> - Steve