I believe velocity is a scaled value of edges per second, so in quadrature mode you'd need to multiply your slots by 4 to find the right scaling. Do you numbers add up if you do that?
Scott On Wed, Dec 12, 2012 at 8:14 PM, John figie <[email protected]> wrote: > What is the sample rate of the halscope and what is the motor rpm? Maybe > the halscope is aliasing. > > On Dec 12, 2012 6:22 PM, "Gene Heskett" <[email protected]> wrote: > > > > Greetings all; > > > > My encoder wheel has 39 slots detected in A/B quadrature, plus of course > > the index, Z. > > > > Running in rpms mode (as opposed to rps), then it seems to me that I'd > need > > to multiply that by 1.5384615384615384615 in oder to convert that to the > > unit of measurement, in this case a single revolution. > > > > I've also tried the reciprocal or .65, but neither of the resultant > figures > > actually gets me a displayed halmeter velocity that corresponds to the > > actual speed. > > > > Its rather hard to make sense too, of the halscope timebase. Looking at > > the same signals with my Hitachi, the halscope displayed graticle is off > by > > at least a factor of 3. > > > > How can I adjust this? > > > > Cheers, Gene > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! > > Without followers, evil cannot spread. > > -- Spock, "And The Children Shall Lead", stardate 5029.5 > > I was taught to respect my elders, but its getting > > harder and harder to find any... > > > > > > ------------------------------------------------------------------------------ > > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > > Remotely access PCs and mobile devices and provide instant support > > Improve your efficiency, and focus on delivering more value-add services > > Discover what IT Professionals Know. Rescue delivers > > http://p.sf.net/sfu/logmein_12329d2d > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > Remotely access PCs and mobile devices and provide instant support > Improve your efficiency, and focus on delivering more value-add services > Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
