We are looking to develop a standalone sdr platform connecting an nVidia Jetson AGX Xavier to a USRP X310. The X310 has two dual receiver boards installed but we are only trying to stream data from one core at this time.
The Xavier is an octacore ARM platform with all cores enabled and running close to 1.5GHz. The connection between the two devices is via ethernet running at 1Gbit. The xavier has a x16 PCIe interface connector and we are using a NIC with 1Gbps SFP module - we intend to run the link at 10Gbit in the future. The onboard 1Gbps ethernet is connected to our LAN The Xavier is running ubuntu 18.04 for arm. This is the development platform that nVidia provides. uhd 4.0.0, gnuradio 3.8 and RfNoC 4 have been installed on the Xavier. The Xavier is given a simple flow to run under gnuradio-companion which consists of a USRP Source connected directly to the QT GUI Frequency sink (or Null Sink) The network buffers and mtu on the xavier are increased to at least those recommended. The result we get is a whole lot of 'D's output if we increase the sample rate beyond 2MSPS. The same result is found if we run the flow from the command line (without the gui). For comparison we have done a similar setup with a USRP E312 - connected to a xavier, a ubuntu 20 virtual machine and directly to a computer running ubuntu 20.04. In each case when we increase the sample rate beyond 2MSPS we get 'O's output. Can anyone please indicate what setup is required to achieve the 25MSPS that should be possible across this link? Thanks in advance
_______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
