Hello, I'm doing some spectrum sensing with the WBX and the USRP2, I'm using the usrp_spectrum_sense script. I do my scans over the whole range of the WBX, from 50 MHz to 2.2GHz. When I do a scan, sometimes I'll get an error message "Failed to set center frequency: FFF" At first, I thought I had either my tune_delay or dwell_delay value set too low. I tried increasing both incrementally to 500ms each. This helped a little, but there are certainly still failures.
Usually it will fail 0-8 times per scan. I've noticed to that a lot of the same frequencies will fail, but it's never consistent. I've also noticed some unexplained peaks that occur near the frequencies that fail. There are certainly more of these peaks when I have more failures. So far, I've been testing in a controlled envoironment with either the input terminated or using a tone generated by a signal generator. Has anyone else run into this problem? I don't think it could be the tune/dwell delays, 500ms is really high delay time. Is there an optimal tune/dwell delay for the WBX? No values I've tried have fully solved my problem though. Could either the tune/dwell delay times be frequency dependent? Thanks For Any Help, Devin _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio