Yes, I do have full schematics for the Datron refs, including the LTZ1000 circuitry. It isn't the same as that in the LTZ1000 data sheet. I'll dig out my manuals. If you'd like a copy, email your postal address and I'll copy the page and send it to you:
[EMAIL PROTECTED] I've built a few standards myself. My latest was one using 16 399's. I shamelessly stole some circuit designs from a Fluke reference to provide sense-current compensation, etc. It was a lot of fun. Bill Ezell ---------- They said 'Windows or better' so I used Linux. Dr. Frank Stellmach wrote: > @Bill Ezell: > > Well, I have the same motivation to invest time and money into "precision". > > I started with metrology working in a German Airforce cal lab in 1980. > We had all that goddie equipment, ie. a bank of Weston standard cells, > the Fluke cal system, DCF receiver, a HP caesium standard, and so on. > This cal lab was tightly associated with our PTB. > In a "secret" lab they obviously made some tests on the new Josephson > junction standard, as they transferred the Volt from this lab to our > facility with a Fluke 731A, and they were very proud of that. > > From then on, the ppm quest never let me go. > It's biggest fun for me to design standards on my own, not only to > collect and repair old ones. > > I've already read about the Datron standards, but didn't know details, > and that it's so sophisticated. It's inner principle of dividing the > reference is identical to the Fluke 5720A, I think. > > Do you have a detailed schematic of the LTZ reference circuitry in the > Datron? > This cannot be found in the manuals of HP3458 or Fluke 7000. > > In Germany there is no big chance for getting surplus standards for a > reasonable price. > It's a pity.. > > Frank > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
