[Discuss-gnuradio] fft sink x-axis units

[Eric Hill Matlis]

I'm trying to figure out how the x-axis units work on the fftsinks.  In 
the application "am_rcv.py", the first plot shows the incoming data 
plotted as an fft, however the units are centered about 0 kHz.  In another 
application, say usrp_wfm_rcv_pll.py the units are centered about the 
actual frequency of the carrier.  Why is this?  The fft sink in both cases 
is plotting the fft of the source, so I don't see why there should be a 
difference.

thanks,

eric

************************************
Eric H. Matlis, Ph.D.
Aerospace & Mechanical Engineering Dept.
120 Hessert Center for Aerospace Research
University of Notre Dame
Notre Dame, IN 46556-5684
Phone: (574) 631-6054
Fax:   (574) 631-8355