Hi Renaissance: Your B200 isn't being found by your computer. Try the usrp_probe utility, I forget the exact name but it is in the same directory/folder as uhd_fft.
The USB cable can sometimes be problematic as it has to be high quality, some cheap cables don't work as they are noisy or have poor connections. What type of computer and OS are you using? On Windows there are sometimes problems with the USB drivers. Don't worry about the eeprom at all, get the base unit working first. Let us know how you make out with the probe. Kevin Sent from my iPhone > On Sep 18, 2017, at 03:54, Rensi Mathew <rensi...@yahoo.co.in> wrote: > > Hi Kevin > > when I try to run uhd_fft, I get the error > > RuntimeError: LookupError: KeyError: No devices found for -----> > Empty Device Address > > How can I assign a device address? > > I tried ./usrp_burn_mb_eeprom --args=addr --values="192.168.10.2" but it is > not working. > > Pl do help. > Thanking you > > Rensi > > > On Friday, September 15, 2017 9:12 PM, Kevin McQuiggin <mcqui...@me.com> > wrote: > > > Hi Rensi: > > I’d suggest using the UHD utility programs that come with the B200. There is > a spectrum analyzer application, called uhd_fft, and a simple radio receiver > that can, for example, be used to test your unit with local broadcast > stations in the FM band. You’ll need a small antenna for one of the SMA > connectors. If you don’t have a proper antenna or connector, you could > simply stick a short piece of wire into the SMA connector for testing. > > For transmitting, an antenna is more critical as you shouldn’t really > transmit into an unconnected or mismatched antenna. I’d suggest looking > again at the utilities provided with either the B200 or gnuradio. You can > build a simple transmitter and use an “FM band” broadcast radio to receive > the transmissions from your USRP. > > I would also suggest going to the gnuradio.org web site and working through > the tutorial series. This will help you get started! > > Kevin > > >> On Sep 15, 2017, at 3:27 AM, Rensi Mathew via USRP-users >> <usrp-users@lists.ettus.com> wrote: >> >> Hi all >> >> I have a single B200 with me and I want to test whether it is >> receiving/transmitting the signal properly. >> How can i test this? >> >> I am new to B200/SDRs and to programming too? >> >> Thanking you >> Rensi >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > > >
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