[time-nuts] HP 5061 zeeman frequency experiance

Magnus Danielson magnus at rubidium.dyndns.org
Tue Oct 4 17:57:11 UTC 2011

On 04/10/11 15:31, paul swed wrote:
> Magnus
> But does anyone have comments on the meter approach HP suggested.
> I really need to understand whats semi normal for  old tube.
> I suspect I may be sitting near the noise floor of the system.
> As for the network analyzer I just happen to have a HP 8505 so may give this
> a try. Suspect I will see the fingers but very close to the noise floor.

The main point of that measurement is to let you better see what 
happends. Remember that sweep-rate greatly impact S/N.

I had a cesium with a DDS which had failed. This added S/N to the 
receive signal.


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