[time-nuts] NCOCXO anyone?
Ole Petter Rønningen
opronningen at gmail.com
Fri Jul 22 04:10:47 EDT 2016
SpectraDynamics HROG 5/10
On 22. jul. 2016, at 09.49, Anders Wallin <anders.e.e.wallin at gmail.com> wrote:
>> richard at karlquist.com said:
>>> Also in 1996, phase microsteppers were already legacy technology and
>>> have a good reputation for spectral purity. Another non-panacea.
>> What is a phase microstepper and/or how does it compare to a DDS?
>> (Google gets lots of hits, but they all refer to motors.)
> H-maser aging is typically compensated by something like
> spectratime femto-stepper
> microsemi AOG
> (there are probably others, please post if you know about them!)
> afaik they contain a OCXO/BVA that is steered based on a DMTD measurement
> against the input reference.
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