Hi all, Working with the example "tx_waveforms.cpp" provided in the uhd, i found myself with two problems trying to set the sample rate and the tx bandwith of the USRP B210 (UHD_3.11.0).
./tx_waveforms --rate 61440000 --freq 2350000000 --wave-type SINE --wave-freq 1000000 --gain 40 --bw 50000000 (with sc16 format) 1. The first thing I realized is that despite the sample rate was the maximum available, the bandwidth is limited to 40 MHz. Furthermore, the following warning appears: [WARNING] [AD936X] Selected Tx bandwidth (61.44 MHz) exceeds So, it seems that somewhere inside the code tries to set the Tx bandwith to the same value as the sample rate... ./tx_waveforms --rate 500000000 --freq 2350000000 --wave-type SINE --wave-freq 1000000 --gain 40 --bw 50000000 (with sc16 format) 2. With sample rates greater tham 40 MHz, I get continuous underflows in transmission. Does anybody knows what's happening? Is there any limit in the maximum sample rate transmitting only in one channel? Thanks in advance!! Lucas -- Laptop specifications - Processor: 8x Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz - Operating System: Ubuntu 16.04.2 LTS - Memory: 8192 MB DDR4-2400MH
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