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:
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> -Ed Howdershelt (Author)
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>
>
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