Hello Jason and Josh, Thanks a lot for your quick reply.
You are right. I put the file "txrx_wbx.bin" on the SD card. Now everything looks normal. Thanks. -Evan On Thu, May 6, 2010 at 7:32 PM, Josh Blum <[email protected]> wrote: > You probably need to load the SD card with the txrx_wbx.bin firmware: > http://gnuradio.org/releases/usrp2-bin/trunk/ > > -Josh > > > On 05/06/2010 04:12 PM, Evan Chen wrote: > >> Hello everyone, >> >> I just got the USRP2+WBX recently. And I used the famous "usrp2_fft.py" as >> a >> starting point. >> >> The problem I met is that the curve plotted by the usrp2_fft.py seemed to >> be >> abnormal. Sometimes, the amplitude of the curve was around -150 dB, and >> sometimes it went below -400 dB. >> >> An antenna was attached to the "TX/RX" port of the WBX. >> >> I tried "usrp2_probe" and got the following information. >> >> >> USRP2 Probe >>>>> >>>> >> MAC Addr: >> 00:50:c2:85 >> >> Name (ID): >> 1 >> >> Converter Rate: >> 100000000 Hz >> >> Gain Range (min, max, step size): >> 0.0 >> 0.0 >> 0.0 >> >> Freq Range (min, max): >> -90000000000.0 Hz >> 90000000000.0 Hz >> >> >> It looks like to me the RF daughterboard was not properly configured. >> >> Did anyone meet such a problem? >> >> Also, I have another two questions: >> >> For full-duplex communications, does it mean both "TX/RX" and "RX2" need >> to >> be attached to antennae? How to configure the WBX? >> >> On "usrp2_fft.py", if the center frequency was set beyond 206 MHz, it >> would >> prompt "Failed". Why this happened? There was no such prompt using the FFT >> Sink on GRC. >> >> >> Thanks. >> >> -Evan >> >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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