Re: [Discuss-gnuradio] USRP2 with 10MHz Function Generator

[Per Zetterberg]

On Tue, 2011-02-15 at 11:43 -0800, Matt Ettus wrote:
> On 02/09/2011 05:15 PM, hafiz zimran wrote:
> > Hi
> > 
> >  
> > 
> > 1)      I am interested to use  Function Generator with Square Waveform
> > out put as a Reference Clock input (10 MHZ)to USRP2. Is this a fine
> > approach to do so…?
> 
> Yes
> 
> > 
> > 2)      What is the relation ship between PPS IN and REF Clock input of
> > USRP2?
> > 
> 
> The PPS_IN should be in the same clock domain as the 10 MHz if you plan
> to synchronize multiple USRPs to each other.  Otherwise, you can use any
> PPS signal.
> 
> Matt

I actually synchronize multiple USRPs with unaligned 10MHz and pps.
Sometimes two USRPs are offset one clock cycle (10ns) but  that is OK
for my application. Of course, I need also to consider that one pps
interval will not be exactly 100e6 clock cyckles
 




BR/
Per