CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Scale resolution

Posted by Jon Elson
on 2002-09-12 22:24:23 UTC
bdrmachine wrote:

> I have 2 Heidenhain ls603 glass scales marked, Grating Pitch 20um,
> System accuracy +- 10um. What is the pulse-count per inch from a
> single channel (before quadrature)?

The output signal from a single channel will repeat every .0007874", or
1270.00254 times per inch.

Since nearly every encoder counter reads all transitions in quadrature,
your scales should have a resolution of 5 uM = .00019685"
This is 5080.01016 counts per inch.

Jon

Discussion Thread

bdrmachine 2002-09-12 18:02:57 UTC Scale resolution Erik Reikes 2002-09-12 21:02:51 UTC Re: Scale resolution Jon Elson 2002-09-12 22:24:23 UTC Re: [CAD_CAM_EDM_DRO] Scale resolution