Re: [Discuss-gnuradio] Multiple USRPs

[Marcus Leech]

Matt Ettus wrote:

> The close in noise is from the COMMON reference, so there is nothing to
> cancel, it is perfect.  It is the further out phase noise components
> which are not the same between the 2 PLLs, since those components are
> from the individual VCOs.  These integrate out fairly quickly, and are
> much smaller anyway.
>
>  
Right, that makes sense.  Although I suspect that there's a "spectrum" 
of contributions
 both from the individual VCOs and the common reference, without a 
clear dividing
 line.