Hi! Any pointers to where I can start debugging this? Maybe run gnuradio-companion in debug mode? Do more simpler tests? Any other suggestions?
I have a HackRF One and will try the exact same comparison there too ... SDRAngel & grc On Mon, Mar 15, 2021 at 7:32 PM Anish Mangal <anis...@umich.edu> wrote: > Hi, > > To properly explain the issue I'm facing, I recorded a video showing > Oscilloscope waveforms. > > > https://drive.google.com/file/d/11anGShu-I3NhL9Jet6YAiyBprvwP4kDc/view?usp=sharing > > The gnuradio flowgraph is here: > > https://drive.google.com/file/d/1xQz1Kp_feAO1YrZRXXnMF25XEGgqVPSw/view?usp=sharing > > The various versions of the software/hardware involved are the following. > > gnuradio-companion: 3.8.2.0 (Python 3.6.9) > gr-limesdr: branch gr-3.8 (last commit > 47511dd58de1695b70e1028366411bada85eb60f) > sdrangel: 4.12.1 > OS: Linux Mint 19.1 > CPU: Intel© Core™ i7-4900MQ CPU @ 2.80GHz × 4 > RAM: 16GB > H/w: Thinkpad T440p > > tl;dr > I'm trying a simple test to create a sinewave output from a WFM modulator > block. If there is no audio input, its WFM modulated signal should be a > simple sinewave. If I test this with SDRAngel, I see a clean-ish actual > sinewave in time domain on the oscilloscope. But if I try to do the same > with gnuradio, it seems to produce a glitchy signal. > > Could I have any advice on what I might be doing wrong? > > Thanks, > Anish // VU2TVE >
