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
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