[Emc-users] CPR or PPR what are they

2011-09-28 Thread Bruce Klawiter
I was looking at this encoder, http://www.usdigital.com/products/e2#description It says: Tracks from 0 to 100,000 cycles/sec 32 to 1250 cycles per revolution (CPR) 128 to 5000 pulses per revolution (PPR) I don't understand the difference between CPR and PPR, I am thinking it has something to do

Re: [Emc-users] CPR or PPR what are they

2011-09-28 Thread andy pugh
On 28 September 2011 22:55, Bruce Klawiter wrote: > I don't understand the difference between CPR and PPR, I am thinking it has > something to do with the A and B channel being 90 degrees out of phase. If > that is the case why is the PPR 4 time higher and not only twice as high. Cycles is the

Re: [Emc-users] CPR or PPR what are they

2011-09-28 Thread Cliff Blackburn
On 9/28/2011 2:55 PM, Bruce Klawiter wrote: > I was looking at this encoder, > http://www.usdigital.com/products/e2#description > It says: > Tracks from 0 to 100,000 cycles/sec > 32 to 1250 cycles per revolution (CPR) > 128 to 5000 pulses per revolution (PPR) > > I don't understand the differenc

Re: [Emc-users] CPR or PPR what are they

2011-09-29 Thread dave
On Wed, 2011-09-28 at 15:28 -0700, Cliff Blackburn wrote: > > On 9/28/2011 2:55 PM, Bruce Klawiter wrote: > > I was looking at this encoder, > > http://www.usdigital.com/products/e2#description > > It says: > > Tracks from 0 to 100,000 cycles/sec > > 32 to 1250 cycles per revolution (CPR) > > 128