[Discuss-gnuradio] Measure noise level

[Meenaktchi Venkatachalam]

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