Thank you Marcus. I should have mentioned that I tried removing that line,
with no success. With non-zero dsp_freq, the power spectrum looks OK but
the (coherent) signal quality is terrible.
On Wed, Jun 5, 2019 at 2:25 PM Marcus D. Leech via USRP-users <
usrp-users@lists.ettus.com> wrote:
> On 06/05/2019 05:20 PM, Dario Fertonani via USRP-users wrote:
>
> I'm trying to move the "DC offset" out of the main spectrum by using the
> dsp_freq field in uhd::tune_request_t. This doesn't seem to work on B210,
> meaning that the following code functions properly with DcOffset_Hz=0 but
> not, for example, with DcOffset_Hz=10e6. In all these tests the master
> clock rate is large enough to fit DcOffset_Hz and the spectrum of interest
> easily. Anything obviously wrong?
>
> Thanks,
> Dario
>
> uhd::tune_request_t uhdTuneRequest( const double &CarrierFreq_Hz , const
> double &DcOffset_Hz )
> {
> uhd::tune_request_t tuneRequest( CarrierFreq_Hz - DcOffset_Hz );
> tuneRequest.args = uhd::device_addr_t( "mode_n=integer" );
> tuneRequest.dsp_freq_policy = uhd::tune_request_t::POLICY_MANUAL;
> tuneRequest.dsp_freq = DcOffset_Hz;
> return tuneRequest;
> }
>
>
> You shouldn't need to use POLICY_MANUAL at all, since the tune_request_t
> supports offset-tuning directly:
>
> https://files.ettus.com/manual/structuhd_1_1tune__request__t.html
>
>
>
> _______________________________________________
> USRP-users mailing list
> USRP-users@lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
