[USRP-users] Could this be Ettus X310 self jamming problem?

Marcus Müller marcus.mueller at ettus.com
Thu Apr 2 10:15:16 EDT 2015


Hi Trek,
which daughterboard is this?

Best regards,
Marcus

On 04/02/2015 03:45 PM, Trek via USRP-users wrote:
> the attached shows the spectrum at 1.6GHz from GRC. 
>
> ------------------ Original ------------------
> *From: * "Marcus Müller via USRP-users";<usrp-users at lists.ettus.com>;
> *Date: * Thu, Apr 2, 2015 09:27 AM
> *To: * "usrp-users"<usrp-users at lists.ettus.com>;
> *Subject: * [USRP-users] Could this be Ettus X310 self jamming problem?
>
> I am doing a spectrum analysis at 1.6 GHz with a Ettus X310 and
> Gnuradio-compaion and UHD 3.8.2. The sampling frequency is 20MHz, and
> am seeing a large spike at 1.6GHz with Gnuradio-companion, which I
> verified it is not in the air with a real spectrum analyzer.
>
> At first I suspect it is a ADC offset, but adjusting LO offset does
> not get it go away. Could this be a self jamming issue in X310 at
> 1.6GHz, is there a way to remedy this?
>
> thanks,
>
>
>  
>
>
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