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
