[time-nuts] HP 5061 zeeman frequency experiance

[Magnus Danielson]

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.

Cheers,
Magnus