Hi Paul and Bob
On 12/06/2014 04:04 PM, Bob Camp wrote:
Hi
Sure you can set them on the wrong peak. If you really get confused, you can
also set them on the wrong transition … (gulp).
Peak wise, the one you want is the highest Q / best SNR. Set it to one of the
others and your ADEV degrades.
Transition wise … not a good idea at all.
It's worse than that. Of the 7 peaks, the middle one has significantly
least sensitivity to the C-field, as well as having the strongest response.
The "new" digital cesiums actually measures the near-by peaks to sense
the C-field and servo the C-field and then use the center peak for servo
the frequency. This is a key to increase the stability of frequency and
reduce a systematic effect.
Cheers,
Magnus
Bob
On Dec 6, 2014, at 9:11 AM, paul swed <[email protected]> wrote:
I have a curious question that really applies to all Cs references.
Its possible to set them on to the wrong peak.
Typically in the literature it will speak to at least 3 peaks and you want
to select the highest central peak.
However if you select the wrong peak, how much would the output frequency
be off?
I had read a tech note for the airforce that seems to indicate its pretty
easy to get on to the wrong peak.
Regards
Paul
WB8TSL
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
