[time-nuts] HG 414A Rubidium

WB6BNQ wb6bnq at cox.net
Fri Mar 25 00:26:01 UTC 2011


YES ! By all means pictures please.

Pete Lancashire wrote:

> Pictures !!!
>
> On Mar 24, 2011 4:31 PM, "Magnus Danielson" <magnus at rubidium.dyndns.org>
> wrote:
> > 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 at 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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.




More information about the time-nuts mailing list