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
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