Usrp B210 uses AD9361 as transceiver. It has a maximum receiver gain as 76 dB and maximum transmitter gain as 89 dB. Your gain values are too small, that's why you cannot see anything but noise. Also be careful that AD9361 has a maximum RF input as -15 dBm. But it can genrate and transmit over 10 dBm signals. If you connect the Tx to Rx directly, you can burn the transciever. Choose the tx gain value so that it will not pass over 0 dBm.
Kind Regards, Yasir 27 Şub 2023 Pzt 18:28 tarihinde oiu13q2t5pibtq1--- via USRP-users < usrp-users@lists.ettus.com> şunu yazdı: > I have 2 B210 with VERT2450s (i.e. 2.4/5 GHz antennae) and compiled uhd > from source > > [INFO] [UHD] linux; Clang version 14.0.0 ; Boost_107400; > UHD_4.4.0.0-0-g5fac246b > > Following the USRP Guide > https://kb.ettus.com/Verifying_the_Operation_of_the_USRP_Using_UHD_and_GNU_Radio, > I checked: > > /usr/lib/uhd/examples/benchmark_rate --rx_rate 10e6 --tx_rate 10e6 > > on both SDRs > > which yielded > > Num received samples: 100243473 > > Num dropped samples: 0 > > Num overruns detected: 0 > > Num transmitted samples: 100064040 > > > Now I tried to receive signals generated the other via > > SDR1: RX: > > /usr/lib/uhd/examples/rx_ascii_art_dft --freq 4996e6 --rate 5e6 --gain 20 > --bw 5e6 --ref-lvl -30 > > SDR2: TX: > > /usr/lib/uhd/examples/tx_waveforms --freq 4996e6 --rate 5e6 --gain 10 > > > I would expect a peak somewhere around 4996 MHz; I only see noise which is > not affected by the tx_waveforms call > > The SDRs are in the same room. > > The TX LED is red, the RX2 LED is green, indicating that they are indeed > sending and receiving > > > Am I missing something important here?! > > > How can I solve that basic task? > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
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