I do t think they implemented SC8 on any of the devices that have 10Gig interfaces available.
Sent from my iPhone > On Mar 16, 2021, at 8:42 AM, Nik Ansell <[email protected]> wrote: > > > > Hello All, > > I am trying to capture 8-bit samples using an Ettus USRP N300, rather than > the default of 16-bit (sc16). > This is for scenarios where I can sacrifice some dynamic range for higher > data rates and also to run on slightly lower powered hardware. > > UHD version info: linux; GNU C++ version 9.3.0; Boost_107100; > UHD_3.15.0.0-62-g7a3f1516 > The Ettus is connected over a network cable and not USB. > I am using the HG FPGA firmware, which is v5.3 according to the output of > `uhd_usrp_probe` > > I have tried two options so far: > Benchmark_rate from the uhd examples directory: > GNU Radio > > This benchmark_rate command below fails with the error message: “Error: > RuntimeError: [RX Streamer] Conflicting OTW types defined: args.otw_format = > 'sc8' <=> stream_sig.item_type = 'sc16'” > > `/benchmark_rate --args > "type=n3xx,mgmt_addr=n.n.n.n,addr=n.n.n.n,master_clock_rate=122.88e6" > --duration 60 --channels "0" --rx_rate 40.96e6 --rx_subdev "A:0" --rx_otw sc8` > > In GNU Radio, I am using a UHD block and configure the “Wire Format” > parameter to “Complex int8”. This produces exactly the same error: > > RuntimeError: [RX Streamer] Conflicting OTW types defined: args.otw_format = > 'sc8' <=> stream_sig.item_type = 'sc16' > > The v3.15 UHD documentation does not state the available otw formats: > https://files.ettus.com/manual_archive/v3.15.0.0/html/structuhd__stream__args__t.html > > However, the v4 documentation does: > https://files.ettus.com/manual/structuhd_1_1stream__args__t.html > > Does anyone know if the N300 does indeed support 8-bit? And if so, how I can > implement it? > > Kind Regards, > Nik > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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