Hi, I am trying to measure noise. I am connecting 'usrp.source_c' to ' gr.fft_filter_ccc' to 'probe' where 'probe' is 'gr.probe_avg_mag_sqrd_c'. I am trying to print out the value returned by 'probe.d_level()' and it always prints out zero. Is there anything I am missing?
Thanks for the help in advance M
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