I'll also add in that you need to set the frequency tuning policies to POLICY_MANUAL before you can change rf_freq or dsp_freq independently.
Sam Reiter On Mon, Feb 17, 2020 at 12:13 PM Rob Kossler via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi Adrià, > If you are trying to use 'timed' commands, perhaps the problem is the > signal generator block. If I remember correctly, this block does not > support timed commands. This means that the resulting data stream will not > include a time stamp and thus if you try to tune the DDC or DUC using a > timed command, it will delay the command until the appropriate time stamp > is seen (which will never occur in your case). If you are not using timed > commands, then just ignore this.... > Rob > > On Thu, Feb 13, 2020 at 6:40 PM Adria via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Dear all, >> >> I'm trying to tune the output and input frequency of an X310 + UBX-160. >> I instantiate the radio block and the DDC and DUC blocks and connect them. >> >> The TX chain is like this: [Signal generator] -> [DUC] -> [Radio block]. >> >> My intention is to use the DUC only for frequency tuning, since I set >> the UBX synthesizers to Integer-N mode. >> >> The fact is that configure the DUC frequency by setting the "freq" >> parameter using the set_param call has no effect. >> >> Trying to set the DUC frequency using tune_request through the dsp_freq >> parameter has no effect either. >> >> My other question is about the Integer-N tuning. Is there a way to set >> the integer mode without using the tune_request object? I expected to be >> able to do that using radio_ctrl. >> >> I am sure I'm missing something but I don't know where else to look, so >> any help would be appreciated. >> >> I'm using UHD 3.14. >> >> Thanks! >> >> >> Adrià Amézaga >> >> >> >> _______________________________________________ >> 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 >
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