[time-nuts] LPRO 101 ADJUSTMENT

[Joseph M Gwinn]

time-nuts-bounces at febo.com wrote on 08/02/2008 04:38:14 PM:

> 
[snip]
> 
>     It would be nice to find a relatively simple and inexpensive 10MHz
> synthesizer that has a resolution of closer to 1E-14 to avoid messing
> with the EFC at all. 

A 48-bit-accumulator DDS chip such as the Analog Devices AD9852 will 
achieve such frequency resolution:  2^-48= 3.6*10^-15, call it 10^-14. The 
issue with a DDS is handling the various spurs.

Arbitrary function generators such as the Agilent 34220A-001 (the -001 
option means that an external 10 MHz reference signal is accepted) will 
also do the job, in a nice albeit expensive ($2.4K new) package.

Joe Gwinn