[volt-nuts] AC volt-nuttery...

Steve steve-krull at cox.net
Tue May 8 20:22:29 UTC 2012

I don't think we should limit ourselves, at least not until the traffic gets so much that we need another group! I have a 6-digit version of the DT72A somewhere in storage, along with some phase angle standards that weigh a ton, and other bits and pieces. 


On May 8, 2012, at 2:32 PM, "Poul-Henning Kamp" <phk at phk.freebsd.dk> wrote:

> For reasons which you would probably recognize, I ended up buying
> a Dekatran DT72A because it was simply too cheap to let go.
> That is a pretty amazing instrument.  Appearantly the only thing
> Tegam changed in the new B version was the box, shaving a some
> kilos of the weight, as far as I can tell, everything else in
> the manual is identical up to and including the errors in the final
> schematic.
> I find somewhat ironic that my HP3458A can measure DC into tenths
> of PPM, while I have nothing in my lab that can reliably produce
> that, whereas it can only measure AC to tens of PPM, while I now
> have a fully passive box which can generate it down to tenths of
> PPM.
> So is volt-nuts DC only, or are anybody playing with AC also ?
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.
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