Hello, We are having trouble with spikes in received signals. This happens with both the X310 and B210. We have a stable setup using Ubuntu 17.10 and UHD 3.10.3.0. There are no receive problems. On Ubuntu 18.04 and/or Ubuntu 16.04, however, no matter the version of UHD these spikes appear. For example, our Ubuntu 17.10 running UHD 3.10.3.0 with a B210 and Ubuntu 18.04 running UHD 3.10.3.0 with a B210 were both set to receive and captured the following at the same time using rx_samples_to_file --freq 2.484e9 --rate 20e6 --gain 20 --args --wirefmt sc16 --file file_13.dat --duration 1. We did not transmit anything, we just wanted to capture the noise.
Plotting real part of received noise from Ubuntu 17.10, UHD 3.10.3.0 setup: [cid:image001.png@01D58D9D.AB734DA0] Plotting real part of received noise from Ubuntu 18.04, UHD 3.10.3.0 setup: [cid:image002.png@01D58D9D.AB734DA0] As you can see, the spikes appear on the B210 capture on the machine running Ubuntu 18.04 with UHD 3.10.3.0. When you zoom in very close on the spikes: [cid:image003.jpg@01D58D9D.AB734DA0] Any idea why this may be happening? Any suggestions would be appreciated. [Logo]<http://www.albany.edu/> Andrew Boggio-Dandry | Ph.D. Student Department of Electrical & Computer Engineering, University at Albany, State University of New York e: aboggio-dan...@albany.edu<mailto:aboggio-dan...@albany.edu> w: https://www.andrewboggio.com<https://www.andrewboggio.com/> m: 518-687-3102 [facebook icon]<https://www.facebook.com/andrew.boggiodandry> [twitter icon] <https://twitter.com/AndrewDandry> [linkedin icon] <https://www.linkedin.com/in/aboggiod/> [instagram icon] <https://www.instagram.com/andrewboge/>
_______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
