[time-nuts] Designing and building an OCXO and GPSDO

Luis Cupido cupido at mail.ua.pt
Sun Aug 17 02:00:56 UTC 2008


Bruce,
John,

Tks for all your comments about that topic.
really interesting.

Luis Cupido.
ct1dmk.



Bruce Griffiths wrote:
> Luis Cupido wrote:
>> Bruce,
>> John,
>> ...
>>
>> And at smaller offsets like 100Hz and less ?
>> Shouldn't the improvement be even bigger ?
>> Closer to the carrier we are dealing with bigger signals
>> so the ADC issues like resolution should be less important,
>> and the limiting factor should really be the the
>> phase noise of the LO's and etc.
>> Am I right ?
>>
>>
>> Luis Cupido.
>> ct1dmk.
>>
>>
>>
>>   
> Luis
> 
> The R&S FMU 36 is a baseband analyser employing a pair of 80MSPS ADCs so 
> only the preamp, ADC, and 80MHz oscillator phase noise should be 
> significant (assuming the calculation roundoff noise isnt  a factor).
> 
> Bruce
> 
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