[USRP-users] Slow Frequency hopping using N2xx

Josh Blum josh at ettus.com
Thu Jun 28 13:26:01 EDT 2012



On 06/28/2012 10:20 AM, mleech at ripnet.com wrote:
>  
> 
> On 28 Jun 2012 13:08, Alex Zhang wrote: 
> 
>> Hi Thomas, 
>>
>> Do you
> know how much bandwidth the current daughter board support? As I know,
> the SBX board only cover the 40Mhz. I don't think this is enough. 
>>
> Besides the so-called baseband hopping, is it possible for the USRP to
> change the center frequency during the flow graph running?
> 
> Oh, good
> lord yes! 
> 
> Tuning latencies on the order of 10msec should be
> achievable. 
> 

SBX can tune in under 600us (2x worst case according to the docs). And
with the timed commands you should be able to very precisely control
when the "hopping" occurs.

-josh

>  
> 
> 
> 
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