[time-nuts] Is my Cs C-Field set OK or do I need to take more data?
Brooke Clarke
brooke at pacific.net
Mon Jan 10 23:36:11 UTC 2005
Hi John:
Yes, but I have seen a number of different numbers for what the Zeeman
frequency is supposed to be. This may be because of where in the
multiplication chain it's injected. But I need to know the exact
frequency for my setup and better how to calculate it. In your case
with a FTS tube in an HP box, what frequency is correct?
Have Fun,
Brooke
John Ackermann N8UR wrote:
> Brooke Clarke wrote:
>
>> Although there's a connector on the FTS4060/S24 marked Zeeman,
>> neither the hardware nor the manual I have talks about it in any
>> way. How can I use the Zeeman input?
>
>
>
> Brooke, I'm just learning about this stuff and haven't read up on the
> physics yet, but the Zeeman input is a low frequency signal (for HP,
> 53.53kHz if I recall correctly) that you inject into the standard.
> You open the control loop and tune the C field to peak the I current
> (there are several minor peaks and one main one). If you don't have
> access to GPS or another reference, this is the way to adjust the C
> field to compensate for local factors. Using GPS is more accurate,
> though.
>
> John
>
>
>
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