Something I've noticed over the years with the USRP is that it seems unusually sensitive to power glitches, even tiny ones. Maybe ground noise?
For example, removing an RF connector while the USRP is powered up can sometimes cause it to go into "Protocol Error -71" in and endless loop, and other things that might introduce small amounts of ground noise. This morning, my wife started the vacuum cleaner outside my office. The USRP had been running entirely fine for 24 hours, and then as soon as the vacuum cleaner started (causing a small AC glitch), the USRP crashed with "Protocol Error -71". Is this an USRP thing, or is it that the USB is rather noise sensitive, and you normally don't see it because 99% of USB devices are powered from the PC, rather than independently, as the USRP is. Have other people seen this effect? I know at least one other person who sees "sensitive USRP" issues, and I wonder if it's common. -- Marcus Leech Principal Investigator, Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
