[USRP-users] Slow Frequency hopping using N2xx

mleech at ripnet.com mleech at ripnet.com
Thu Jun 28 13:29:02 EDT 2012


 

Indeed, I was being conservative, because: 

 o OS scheduling 

 o
IP-stack 

 o Ethernet transit 

 o USRP command processing 

On 28 Jun
2012 13:26, Josh Blum wrote: 

> On 06/28/2012 10:20 AM,
mleech at ripnet.comwrote:
> 
>> 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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