I am using benchmark_tx/benchmark_rx to transmit data on 2.41GHz: *./benchmark_rx.py -f 2.41G* *./benchmark_tx.py -f 2.41G*
While I can receive packages at the rx end, the n_right field of every package is always 0. I know it means the package failed the CRC check. What might be the cause? I am using two USRP N210s and daughter boards are XCVR2450. The following are the displayed message at rx end: *belltestbed@belltestbed-OptiPlex-790:~/Desktop/gnuradio/gr-digital/exales/narrowband$ ./benchmark_rx.py -f 2.41G * *linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-128-g12f7a5c9* * * *>>> 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])* * * *UHD Warning:* * The hardware does not support the requested RX sample rate:* * Target sample rate: 0.050000 MSps* * Actual sample rate: 0.195312 MSps* * * *Symbol Rate: 25000.000000* *Requested sps: 2.000000* *Given sample rate: 195312.500000* *Actual sps for rate: 7.812500* * * *Requested sample rate: 50000.000000* *Actual sample rate: 195312.500000* *Warning: Failed to enable realtime scheduling.* *Using Volk machine: avx_32* *ok = False pktno = 65 n_rcvd = 1 n_right = 0* *ok = False pktno = 67 n_rcvd = 2 n_right = 0* *ok = False pktno = 68 n_rcvd = 3 n_right = 0* *ok = False pktno = 69 n_rcvd = 4 **n_right = 0* *ok = False pktno = 70 n_rcvd = 5 **n_right = 0* *ok = False pktno = 71 n_rcvd = 6 **n_right = 0* *ok = False pktno = 72 n_rcvd = 7 **n_right = 0* *ok = False pktno = 73 n_rcvd = 8 **n_right = 0* *ok = False pktno = 74 n_rcvd = 9 **n_right = 0* *ok = False pktno = 75 n_rcvd = 10 **n_right = 0* *ok = False pktno = 76 n_rcvd = 11 **n_right = 0* *ok = False pktno = 189 n_rcvd = 12 **n_right = 0* -- Regards, Weixian Zhou
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