Re: [USRP-users] Error when trying to run USRP N310s using external LO

nge 300-4000 MHz. Are you trying to operate > below 300MHz? > Rob > > On Thu, Oct 24, 2019 at 3:42 PM Mark Wagner via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hi all, >> >> I'm currently trying to run a set of USRP N310s all using the s

[USRP-users] Error when trying to run USRP N310s using external LO

Hi all, I'm currently trying to run a set of USRP N310s all using the same external LO, but I seem to be getting this error "[ERROR] [0/Radio_1] RX LO lowband does not support setting source to external" which will repeat for all the radios. I tried looking online for the source of the error but

[USRP-users] N310 late packet error (L) when streaming to python block

Hey all, I've been trying to get the embedded python block to work with my USRP N310s, but I'm experiencing late packet errors. My goal is to stream one channel of the N310 to a length 2^12 vector, perform some fancy fance on the vector, then vector to stream to a file sink. The problem: every ti

[USRP-users] Digital TV Clock recovery using N310 and GNUradio

Hey all, I'd like to recover the clock tone of a digital TV signal on one USRP N310 and use it as the clock input to another N310. Does anyone have experience doing something like this? I could use some pointers. -Mark -- Mark Wagner University of California San Diego Electrical and Computer En

[USRP-users] How to periodically write files using USRP and GNUradio

Hey all, I'd like to know how to write short files of streamed USRP data periodically using GNUradio. For instance, I'd like the USRP to automatically record 5 seconds of data every 10 minutes. It does not matter to me whether the USRP is constantly on and most of the data is being discarded, or i

[USRP-users] Absolute dB

Hey all, I calculated the theoretical noise floor for a signal with bandwidth 1 MHz being detected at an N310 (6.8dB noise figure) and found it to be around -106 dBm, but then when I ran my N310 I was seeing the noise floor closer to -120 dB. The plot (made from) GNUradio is labeled as 'Absolute d

Re: [USRP-users] N310 time offset between TX RF Outputs

Here's a google drive link with images of the phase drift between rx4 and tx 1&2, and tx 3&4 https://drive.google.com/open?id=1Bg6F0WHzzwVhpFBlrlfqJgpGg9JtTczH On Thu, Nov 8, 2018 at 11:32 AM Mark Wagner wrote: > Hi guys, > > Maybe I could jump in and share some related results. My group has be

Re: [USRP-users] N310 time offset between TX RF Outputs

Hi guys, Maybe I could jump in and share some related results. My group has been developing a MIMO system with N310 units. We did a test sounding recently where we sent 4, length 4096, orthogonal multitone signals from the transmitters to the receivers and processed the data by finding the channel

[USRP-users] No devices found for ------->

Hi all I've got an N310 USRP which I was trying to update the FPGA image to. I've got the host computer hooked up to the N310 through an RJ-45 cable going into SFP+0. I followed the instructions on the Getting Started page and tried to update using uhd_image_loader --args "type=n3xx,addr=192.168.

[USRP-users] Can't change MTU on N310

Hi, Right now I'm trying to change the MTU on eth0 to be 8000 as suggested by the Hardware driver and USRP manual but I'm getting an error I'll start my N310 with a 10Gbe connection, screen in as instructed, and type ifconfig eth0 mtu 8000 then get error message eth0: Invalid MTU 8000 requeste

[USRP-users] Unable to install UHD

Hi USRP mailing list, I'm having trouble installing UHD from source. I've been following the instructions on this page https://kb.ettus.com/Building_and_Installing_the_USRP_Open-Source_Toolchain_(UHD_and_GNU_Radio)_on_Linux but I keep running into the same problem. I've cloned the latest version