[time-nuts] LPRO 101 ADJUSTMENT
Joseph M Gwinn
gwinn at raytheon.com
Tue Aug 5 14:53:24 UTC 2008
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
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