Thank you for replying. I included some screenshots of the program. One is of the block diagram and the other is of the graph itself. I am generating a signal using a different device and program. having only one B200 has prompted me to use this method. I am using a NI USRP-2920 with lab view to generate a signal
On Wed, Jul 22, 2015 at 12:01 PM, Marcus Müller <marcus.muel...@ettus.com> wrote: > Hi Ashraf, > > If you've configured the USRP source correctly, you're very likely > actually displaying the spectrum your digital receiver sees -- depending on > the signal, you could a) actually be rising the power level in that whole > band, or b) maybe you're observing something like saturation and hence > intermodulation of additional signals. > > You migth want to share what exactly you are observing, and what exactly > the signal is you're generating. Screenshots are easy to make and to upload > [1], so please illustrate a little better! > > Best regards, > Marcus > > > [1] www.imgur.com > > On 22.07.2015 17:56, Ashraf Younis wrote: > > Hello, the issue I am having is I cannot display a graph that shows a wide > range of frequencies and their power. When I attempt it with the QT GUI > Frequency in GRC, I get something similar to the one in this video (FFT > plot <https://youtu.be/cygDXeZaiOM?t=3m49s>) but then I transmit a signal > in the range I am currently looking at and the whole line moves up. This > leads me to believe that I am no displaying the whole range I desire, but > in fact I am displaying the center frequency and a small bandwidth around > it. I want to, for example, scan the 2.4 GHz range and see all of the > channels and their power. And when I transmit at a certain frequency, I see > a spike at the spot in the graph. > > How do I create that graph? > > > _______________________________________________ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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