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From: | Hassaan Ahmad |
Subject: | Re: [Discuss-gnuradio] Gnuradio FFT - Graph concatenation |
Date: | Thu, 11 Jun 2015 19:25:37 +0500 |
Thanks for the guidance.
Can I do this message passing in GRC? Also, how would the bandwidths get concatenated together and displayed in the same FFT graph?
On Thu, Jun 11, 2015 at 9:59 AM, Hassaan Ahmad <address@hidden> wrote:Hi,I'm using USRP E310 and running uhd_fft.grc to acquire FFT spectrum from the device in network mode, and then displays that with QT FFT GUI block.Setting a center frequency, I can get an instantaneous bandwidth of 32MHz around the center frequency. (for me it's the maximum in network mode) Now, I want to change the center frequency programmatically in order to sweep a larger bandwidth and then concatenate the results into a single QT FFT graph like this:-IQ/2-----Cent.freq1-----+IQ/2 -IQ/2-----Cent.freq2------+IQ/2 -IQ/2-----Cent.freq2------+IQ/2 ...Is their a way I can do it?Regards,The QTGUI FFT sink has a message port that allows you to control the center frequency. See the Detailed Description hereTom
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