"O" = overrun (PC not keeping up with received data from usrp or audio card) "U" = underrun (PC not providing data quickly enough)
You can try to reduce the sampling rate or use a better powerful machine. :) On Thu, Jun 7, 2012 at 2:15 PM, Weixian Zhou <idea...@gmail.com> wrote: > I had successfully transmit data without any problems using > benchmark_tx/benchmark_rx moment ago: > *./benchmark_rx.py -f 2.42G -r 2M* > *./benchmkar_tx.py -f 2.42G -r 2M* > > But after a few tries, the rx end started to show 0000... The wired thing > is that I input the same parameters as before but the result is different: > *bell@bell-HP-Compaq-4000-Pro-SFF-PC:~/Desktop/USRP/gnuradio/gr-digital/end$ > ./benchmark_rx.py -f 2.47G -r 2M* > *linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.001-129-g23344268 > * > * > * > *>>> gr_fir_ccf: using SSE* > *-- Opening a USRP2/N-Series device...* > *-- Current recv frame size: 1472 bytes* > *-- Current send frame size: 1472 bytes* > * > * > *UHD Warning:* > * Unable to set the thread priority. Performance may be negatively > affected.* > * Please see the general application notes in the manual for > instructions.* > * EnvironmentError: OSError: error in pthread_setschedparam* > * > * > *No gain specified.* > *Setting gain to 49.500000 (from [0.000000, 99.000000])* > *Warning: Failed to enable realtime scheduling.* > *Using Volk machine: ssse3_32* > * > OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO > * > > I am using the two USRP N210, the daughter boards are both XCVR2450. > Ubuntu 12.04, latest version of UHD and GNU Radio. > -- > Regards, > Weixian Zhou > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- Regards, Brian
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