Hi Eric and All, I found one of replies sent by Eric said that:
>What are the units of the Y axis? They are the output of the digital down converter. They are not calibrated to any particular voltage level. The levels depend on the gain setting too. My first question now is what the unit exactly is. Or is it just some number coming from the output of DDC? Eric said that the levels depend on the gain setting too. If the gain is 1, are Y-axis voltage? My second question is what are the units of the Y-axis in FFT. I think Y-axis should be referenced to some noise figure. And 0dB in the plot is not the exact 0dB, but relative to some noise figure, and how much the noise figure is? Am I right? Thanks, Brook -- View this message in context: http://www.nabble.com/Questions-on-the-unit-of-Y-axis-in-usrp_oscope.py-and-usrp_fft.py-tp14608013p14608013.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
