[USRP-users] Virtual machine setup

2017-08-23 Thread Cho, Daniel J (332C) via USRP-users
Hello - I tried looking for a guide in setting up an Ubuntu VM to use for a USRP B210 that I just bought but was unable to find anything online. How much memory (RAM) should we allocate to the VM? How big should the virtual disk size be? How do we configure the network to connect the USRP to the

[USRP-users] Empty subdev spec

2017-08-23 Thread Rob Kossler via USRP-users
Hi, Is it possible to use subdev specs (or alternate method) in order to disable channels? I tried to specify an empty subdev list, but I get the following error Error: ValueError: Empty rx subdevice specification is not supported. My reason for wanting this is that I have two X310, each with tw

Re: [USRP-users] Virtual machine setup

2017-08-23 Thread Nate Temple via USRP-users
Hi Daniel, It is generally recommended not to run within a VM, and it is better to operate on the bare metal host for SDR applications. You should expect lower performance and throughput when operating within a VM vs a bare metal host. However it is possible. >How much memory (RAM) should we

[USRP-users] 'Exception in safe call' error occurs while loading the image in uhd_usrp_probe

2017-08-23 Thread 이진세 via USRP-users
Hello. I installed sdk using sshfs in e310. and when i run the uhd_usrp_probe, the error occur about usrp_e3xx_fpga_idle_sg3.bit. I need new usrp_e3xx_fpga_idle_sg3.bit file? then how can i load new fpga_idle file? Thanks. Jinse Lee root@ettus-e3xx-sg3:~/usr# uhd_usrp_probe [INFO

[USRP-users] USRP Tx delayed transmission: set_start_time() of USRP sink not working

2017-08-23 Thread Edwin Li via USRP-users
Hi all, I'm trying to implement delayed burst transmission on USRP x310. Here is how I do it. I sync the USRP with my computer time. I get the system time and add a 20 seconds delay tt=self.uhd_usrp_sink_0.get_time_now()+uhd.time_spec_t(20) and set the start time self.uhd_usrp_sin

[USRP-users] RFNoC for MIMO

2017-08-23 Thread liu Jong via USRP-users
Hi all, We plan to use 4 number of X310 for 8X8MIMO, and now we want to use the rfnoc framework for real-time signal processing. How do we focus the data on a x310 for processing?. Because the collected data comes from different x310. thank you. best regards Jon ___