Hi, I was running the benchmark scripts with the following set of parametrs
-f 915M -r 5000000 -m psk -8 with 30 dB gain set on both Tx and Rx. I was getting cluttered overflows and packet received during that time are in error.. Like I'm receiving about a 1000 packet without error and then then system runs into overflow and about then quite a large number of packets are received in error. Output is posted Demodulator: bits per symbol: 3 RRC roll-off factor: 0.35 FLL bandwidth: 6.28e-02 Timing bandwidth: 6.28e-02 Phase bandwidth: 6.28e-02 -- Opening a USRP2/N-Series device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes UHD Receiver: UHD Args: Freq: 915MHz Gain: 30.000000 dB Sample Rate: 3.33333Msps Antenna: None Spec: None Demodulator: bits per symbol: 3 RRC roll-off factor: 0.35 FLL bandwidth: 6.28e-02 Timing bandwidth: 6.28e-02 Phase bandwidth: 6.28e-02 Receive Path: modulation: psk_demod bitrate: 5Mb/s samples/symbol: 2.0000 Differential: True Using Volk machine: avx_64_mmx ok = True pktno = 1 n_rcvd = 1 n_right = 1 ok = True pktno = 2 n_rcvd = 2 n_right = 2 ok = True pktno = 3 n_rcvd = 3 n_right = 3 . . . ok = True pktno = 2953 n_rcvd = 2953 n_right = 2953 ok = True pktno = 2954 n_rcvd = 2954 n_right = 2954 ok = True pktno = 2955 n_rcvd = 2955 n_right = 2955 ok = True pktno = 2956 n_rcvd = 2956 n_right = 2956 ok = False pktno = 2957 n_rcvd = 2957 n_right = 2956 ok = False pktno = 2959 n_rcvd = 2958 n_right = 2956 ok = False pktno = 2961 n_rcvd = 2959 n_right = 2956 ok = False pktno = 2963 n_rcvd = 2960 n_right = 2956 ok = False pktno = 2965 n_rcvd = 2961 n_right = 2956 ok = False pktno = 2967 n_rcvd = 2962 n_right = 2956 . . . ok = False pktno = 3838 n_rcvd = 3369 n_right = 2956 ok = False pktno = 3841 n_rcvd = 3370 n_right = 2956 ok = False pktno = 3843 n_rcvd = 3371 n_right = 2956 ok = True pktno = 3845 n_rcvd = 3372 n_right = 2957 ok = True pktno = 3846 n_rcvd = 3373 n_right = 2958 ok = True pktno = 3847 n_rcvd = 3374 n_right = 2959 ok = True pktno = 3848 n_rcvd = 3375 n_right = 2960 . . . Any idea how to avoid these overflows??? -- Manu T S
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