[CAD_CAM_EDM_DRO] What is quadrature (was: How do you figure steps/inch with a servo?)

Jeff, list,
Here's a link to a site wich explains the how's, why's and what's.
May need to cutn'n'paste the link.

http://www.gpi-encoders.com/technical_articles.htm#"Understanding%20Quadratu
re"

/Henrik Olsson.

----- Original Message -----
From: "jeffdavis516" <cadman@...>

> Now that I have the Z axis working in my mill. I am trying to set
> the system so that if I tell the computer to move one inch, it will.
>
> I have servo's with 200 CPR encoders on them. I guess this give me
> 800 counts in quadrature (what ever that means). I have 5/8 .200
> pitch ball screws. and a 2:1 ratio pulley setup.
>
> Can anyone help me figure out the number I put in CNCPro for "steps
> per inch"? I know it must be close to 10,000 because that gets me
> close.
>
> Thanks
>
> Jeff