[time-nuts] Austron PRR-10 GPS discliplined Rb...

[Ulrich Bangert]

Hi Magnus,

can you supply this manual???

Ulrich Bangert, DF6JB

> -----Ursprüngliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Magnus Danielson
> Gesendet: Samstag, 27. Januar 2007 12:36
> An: time-nuts at febo.com; bruce.griffiths at xtra.co.nz
> Betreff: Re: [time-nuts] Austron PRR-10 GPS discliplined Rb...
> 
> 
> Hi!
> 
> Those interested in micro-steppers might want to look at the 
> Symmetricom AOG-110 manual. They have a local 5 MHz OCXO 
> locked through a interesting gear with the incomming 5 MHz 
> and a DDS to result in a 10 kHz comparision frequency for the 
> phase detector in the loop. The gear acheives a 512000 
> increase in gain (1024 from gear-works as such and 500 from 
> the ratio of 5 MHz and 10 kHz). To acheive the 1E-19 stepsize 
> it then takes the DDS a few bits, but what is 56 bits among 
> friends? Since we don't need to waste too much on this, there 
> is a 8 bit CPU processing it all in there and it uses a 56 
> bit fixed point format.
> 
> I'd naturally love a few comments on that one.
> 
> Cheers,
> Magnus
> 
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