Hello, thank you for your suggestions! I'm using a custom burst generator block that attaches timestamps but I was not correctly setting the timed command to the DUC.
Sent from BlueMail On 18 de febr. de 2020, 17:18, at 17:18, Sam Reiter <[email protected]> wrote: >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 < >[email protected]> 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 < >> [email protected]> 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 >>> [email protected] >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >> _______________________________________________ >> USRP-users mailing list >> [email protected] >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>
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