Thank you for the quick response.
Based on the information received, it was possible to begin to understand what was happening: 1) Proceed with self-calibration: uhd_cal_tx_dc_offset --verbose --freq_start=3.45e+9 --freq_stop=3.55e+9 --freq_step=1e+6 --subdev=A:0 uhd_cal_tx_dc_offset --verbose --freq_start=3.45e+9 --freq_stop=3.55e+9 --freq_step=1e+6 --subdev=B:0 Calibration files were generated: tx_dc_F5B3E5.cal and tx_dc_F59F87.cal 2) In the uhd library I found the command uhd.types.TuneRequest. And in the gnuradio library the command is the suggested example: uhd.tune_request(). However, I didn't notice any changes (see below) Any ideas what I might be overlooking? Thank you in advance. De: zhou <hwz...@yahoo.com> Enviada em: sexta-feira, 23 de fevereiro de 2024 17:45 Para: usrp-users@lists.ettus.com; Pedro Vieira <pav.vie...@gmail.com> Assunto: Re: [USRP-users] OFDM signal transmission by x310 presents a peak Hi Pedro, It could be DC leakage. Try to run the calibration commands. For X310, you need to loopback connect Tx and Rx antennas with 30dB attenuators. Regards, Hongwei On Friday, 23 February 2024 at 01:52:37 GMT, Pedro Vieira <pav.vie...@gmail.com <mailto:pav.vie...@gmail.com> > wrote: An ofdm signal, which is generated in python, presents a peak in the central part of the spectrum. What could it be? This same behavior appears on USRP X310 and HackRFOne. _______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com> To unsubscribe send an email to usrp-users-le...@lists.ettus.com <mailto:usrp-users-le...@lists.ettus.com>
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