Hi Not available for purchase in the US. That's no fun, think of the bidding war we all could have gotten into ...
Bob On Mar 25, 2011, at 5:06 AM, Heinzmann, Stefan (ALC NetworX GmbH) wrote: > Ebay 180632718950 > > Is it this one? > > Cheers > Stefan > > -----Ursprüngliche Nachricht----- > Von: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] Im > Auftrag von Magnus Danielson > Gesendet: Freitag, 25. März 2011 00:31 > An: Discussion of precise time and frequency measurement > Betreff: [time-nuts] HG 414A Rubidium > > Fellow time-nuts, > > Today a new box entered the lab, a Götting KG HG 414A. This is not of > German origin, but is in fact a Soviet/Russian TSCH1-78. I've got SN 052 > made in 1992, but the manual seems to be written in 1986. > > Manuals is some form of copy method I just can't recall right now, but > stencil looks possible. > > Mine comes with complete electrical and mechanical drawings, calibration > manual with nice stamps . All that in russian. There is also some > manuals translated into german which helps me a lot in the basic get > started operation, even if my german is close to non-existent. > > It is in good shape, even if a quick look at the waveforms shows that > some improvement can be achieved. It locks and operates relatively well > straight out of the box. > > So, what does it do? > > It has a Rubidium reference in it. A 5 MHz OCXO which synthesize into 90 > MHz and 5,31746 MHz which then is mixed in the cavity to 6,83468254 GHz > with a 86,8 Hz phase-modulation for resonance sweep. > > It has a lock-indicator on the front and also a trimmer for OCXO > adjustment with indicators of direction to turn. > > With that in hand, it generates 10 MHz, 5 MHz, 1 MHz and 100 kHz sine > outputs. > > It further takes a 5 MHz input and measures it's frequency over one > second with 1E-11 resolution or over 10 or 100 s with 1E-12 resolution. > It shows 7 digit numbers. It essentially mix down to 500 Hz, 50 Hz or 5 > Hz and measures. Works nicely. > > It can also measure time-differences, and thus relates to the time it > has. It is fairly easy to set up the time of day in HH MM SS and it > looks like you can take a PPS and time-align it to it. Then you can > measure that time-difference. It also has a delayed output which is > programmable in 100 ns steps. > > So, this box is a bit of everything, but a rather nice one. > > The DC connector is unknown to me, but the AC is a standard IEC one, so > that took no time to hook up. > > It will take some time to fully understand it, but who said it would be > easy? > > I need to brush up my russian and german... ah well. > > I use a TADD-2 for wave-cleanup, but it only achieves it partly. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
