[time-nuts] Hp5061 Cesium Zeeman adjustment

paul swed paulswedb at gmail.com
Sat Feb 25 17:08:09 EST 2017

Thanks Corby.
Well didn't find the zeeman peaks but using a GPSDO it was very apparent
what the peaks are. Its now set and the real issue is that the base unit
was a option 004 now with a standard tube in it. Changing the C field
resistor moved it into the correct offset range. 300 ohms down to 235 ohms
for a standard tube per the manual.
I did swap the synthesizer module but I do not believe thats actually an

On Sat, Feb 25, 2017 at 12:32 PM, <cdelect at juno.com> wrote:

> Paul,
> The Zeeman frequency you use depends on what synthesizer frequency your
> unit is set for.
> Either 48.82Khz or 53.53Khz.
> See: https://www.febo.com/pipermail/time-nuts/2008-July/032378.html
> The Zeeman coil is close to a short. You set the amplitude to the spot
> that gives you the best look at the peaks.
> Adjust the C-field to land on the central peak.
> Cheers,
> Corby
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