I used two sinusoidal signals from signal generator. I want to calculate the phase difference between them. I apply the "fft" and the "complex to Arg" block in GNURadio. the center frequency is 600 MHz and the sample rate is 8MHz.
but when I run the flowgraph a window is opened for just 1sec and then it is closed and nothing else happens! I would be thankful if you tell me if there is somthing wrong.
Thank you