[time-nuts] Method for comparing oscillators

Don Latham djl at montana.com
Wed Aug 5 07:13:42 UTC 2009


I had a quick look at the manual. From the block diagram of the technique, 
seems that one could use the USRP board (Ettus Research) and GNU Radio 
functions to do the whole thing. Oddly, the OSRP board clock is 64 MHz....
Don Latham

----- Original Message ----- 
From: "M. Warner Losh" <imp at bsdimp.com>
To: <time-nuts at febo.com>; <james.p.lux at jpl.nasa.gov>
Sent: Tuesday, August 04, 2009 11:03 PM
Subject: Re: [time-nuts] Method for comparing oscillators


> In message: 
> <ECE7A93BD093E1439C20020FBE87C47FEB74C94DE9 at ALTPHYEMBEVSP20.RES.AD.JPL>
>            "Lux, Jim (337C)" <james.p.lux at jpl.nasa.gov> writes:
> : >
> : > Bruce,
> : >
> : > Thanks, that looks interesting. I found the manual here...
> : > http://www.symmetricom.com/media/files/support/ttm/product-
> : > manual/5120A-MAN.pdf
> : >
> : > But I haven't figured out where to get a list of related patents. Can
> : > anyone provide key number(s) or point me to a list?
> :
> :
> : http://www.uspto.gov/
> :
> : patent search
> : quick
> : symmetricom in "Assignee Name"
> :
> :
> : 47 patents assigned to symmetricom.
> :
> : To be honest, though, none of the titles look relevant.
> :
> : You might need to search on the name of someone who worked on it, or the 
> company that originally developed it.
> :
> : For instance, S.R. Stein signed the DoC, and is also a co-author of the 
> paper they cite.
>
> Sam Stein works for Symmetricom these days.  Many of the patents might
> be under "Timing Solutions", the name of his old company.
>
> Warner
>
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