[USRP-users] USRP N310 A timeout event occured!

Dear Users, I am using USRP N310, with UHD 4.0 version in Ubuntu 20.04. When I want to test my uplink sniffing using N310, it gives me following errors: 1) \[WARNING\] \[MPM.RPCServer\] A timeout event occured! 2) \[WARNING\] \[0/Radio#0\] Attempting to set tick rate to 0. Skipping. \[WARN

[USRP-users] USRP N310 no device found

Dear All, My name is Purva Joshi. I am using USRP N310 from Ettus Research. I am not able to find my device. I am using Ubuntu 18.04 with UHD version 4.0. From physical set up, I have everything ready. If I ping for the USRP IP it gives me positive response and from "ifconfig" command, I can se

[USRP-users] USRP N310 no device found

Dear All, My name is Purva Joshi. I am using USRP N310 from Ettus Research. I am not able to find my device. I am using Ubuntu 18.04 with UHD version 4.0. From physical set up, I have everything ready. If I ping for the USRP IP it gives me positive response and from "ifconfig" command, I can se

[USRP-users] USRP N310 Exception errors

Dear Community, I am facing an issue with UHD 3.15.0 and USRP N310 since, sometimes, the application (OAI gNB) does not start and returns this error: [ERROR] [UHD] Exception caught in safe-call. in ctrl_iface_impl<_endianness>::~ctrl_iface_impl() [with uhd::endianness_t _endianness = uhd::END

[USRP-users] USRP N310 using designated RF antenna ports pair

Hi all, I'm new to USRP N310. I'm trying to use the uhd_fft spectrum monitor command to receive signals. Is it possible that I transmit and receive signals while using RF 1 instead of the default RF 0? What kind of --args should I use? Many thanks Chun-Chih Lin ___

[USRP-users] USRP N310 and USRP B210 didn't connect through RF

Dear All, In my lab I am trying to create an OAI 5G SA network. We are using USRP N310 as a gNB and USRP B210 as a nrUE. We were able to start gNB without an error. Once nrUE (B210) starts it doesn't attach to the gNB. It loops as mentioning "Starting sync detection" as shown in the attachment (ue

Re: [USRP-users] USRP N310 cannot start after reboot when updating the Linux File System

Perhaps you can write the SD card directly as described here . I suggest using bmaptool. Rob On Fri, Jan 8, 2021 at 1:24 AM Heng Zhang via USRP-users < usrp-users@lists.ettus.com> wrote: > Dear community, > I try to update

[USRP-users] USRP N310 cannot start after reboot when updating the Linux File System

Dear community, I try to update the Linux File System of USRP N310 with mender following http://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide. Everything seems ok when updating the file system with "mender -rootfs /home/root/usrp_n3xx_fs.mender". However, I reboot the USRP after mende

[USRP-users] USRP N310 environment

Hey, I'm trying to install UHD 3.13.0.2 gnuradio and gr-ettus for USRP N310 sdk. When I installed the uhd, the Python API was disabled and if I enabled it on cmake it would fail (I'm not sure if the environment supports python api). I wasn't sure if this was a big deal so I tried to install gnu r

Re: [USRP-users] USRP N310

Hi Sam, Just tolerate it. I don't have any compensation algorithm. Rob On Tue, Mar 3, 2020 at 1:41 PM Sam Reiter wrote: > Rob, > > Question for you - is your usecase one where you can simply tolerate that > 180 degree ambiguity? Or do you have a routine in your code to characterize > and compen

Re: [USRP-users] USRP N310

Rob, Question for you - is your usecase one where you can simply tolerate that 180 degree ambiguity? Or do you have a routine in your code to characterize and compensate for it on each run? Sam Reiter On Tue, Mar 3, 2020 at 11:44 AM Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wr

Re: [USRP-users] USRP N310

On 03/03/2020 12:31 PM, Rob Kossler via USRP-users wrote: Hi Len, I have run some testing of this capability. A few remarks: * In my test setup, I had a signal generator running into a 1:4 splitter with outputs connected to the four N310 Rx2 inputs. I used another signal generator as

Re: [USRP-users] USRP N310

Hi Len, I have run some testing of this capability. A few remarks: - In my test setup, I had a signal generator running into a 1:4 splitter with outputs connected to the four N310 Rx2 inputs. I used another signal generator as the LO source running into a 1:2 splitter with outputs co

[USRP-users] USRP N310

Folks,I'm looking for information from any subscriber(s) to this forum that have successfully used the USRP N310 to provide 4 Rx channels which are both coherent and synchronized.  I've heard this could be challenging and I know people have been able to do this successfully so I was wondering wh

Re: [USRP-users] USRP N310 Performance Issues

Hi Austin, >Is there a way to do it directly via the jtag and using the screen command to speak with the N310? You could connect to the ARM via JTAG as detailed in the link below, but you're better off just SSH'ing into it. https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide#Conn

Re: [USRP-users] USRP N310 Performance Issues

Let’s do some quick math, shall we? 5msps with 16-bit complex == 160Mbit/second 1.25msps with 16-bit complex samples == an additional 40mbit-second Unless you have super reliable 1Gig wireless infrastructure, this just isn’t going to work. Sent from my iPhone > On Jan 28, 2020, at 6:23 PM, A

Re: [USRP-users] USRP N310 Performance Issues

Hey Nate, Thanks for the quick response as always! I tried editing those files in the past, but I remember having issues because they were locked or I wasn’t able to actually save any changes that I made. Is there a way to do it directly via the jtag and using the screen command to speak with th

Re: [USRP-users] USRP N310 Performance Issues

Hi Austin, The MTUs on your host and N310 must match. You should modify the systemd configuration on the N310 are restart the whole device or restart systemd-networkd https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide#Updating_the_Network_Configurations It is not recommended to

[USRP-users] USRP N310 Performance Issues

Hi everyone, I have a very basic GNU script with just a USRP block and a time sink that when I run, there are tons of streaming errors with the tx and rx. In GNU, the console is being filled with 'D's and the console for the N210 is getting filled with 'U's and 'S's. My setup is just a USRP N210 c

Re: [USRP-users] USRP N310 Losing Connection Occassionally

On 11/23/2019 08:42 PM, Austin Adam wrote: Thank you for your help Marcus, that seems to have done the trick! It was the "no gui" and "run to completion" options that did it, for any others who may come along this post and want to know if your solution worked! I think the basic problem in the Q

Re: [USRP-users] USRP N310 Losing Connection Occassionally

Thank you for your help Marcus, that seems to have done the trick! It was the "no gui" and "run to completion" options that did it, for any others who may come along this post and want to know if your solution worked! On Sat, Nov 23, 2019 at 3:28 PM Marcus D. Leech wrote: > On 11/23/2019 06:24 P

Re: [USRP-users] USRP N310 Losing Connection Occassionally

On 11/23/2019 06:24 PM, Austin Adam wrote: For testing, I just put a simple signal source, added a head block, and then a QT Time sink and it seems to just go for a second and freeze. I am sure this is the correct way to do it. When it issues the 'done' is it supposed to close? Or send a messag

Re: [USRP-users] USRP N310 Losing Connection Occassionally

For testing, I just put a simple signal source, added a head block, and then a QT Time sink and it seems to just go for a second and freeze. I am sure this is the correct way to do it. When it issues the 'done' is it supposed to close? Or send a message? Or change some variable that I then have to

Re: [USRP-users] USRP N310 Losing Connection Occassionally

On 11/23/2019 06:06 PM, Austin Adam wrote: So I just put it in between my source and sink and when it hits lets say 100 samples, it will automatically terminate the script? I just tried doing it and it doesn't seem to be working, it just sort of freezes up after about a second. Maybe I am n

Re: [USRP-users] USRP N310 Losing Connection Occassionally

So I just put it in between my source and sink and when it hits lets say 100 samples, it will automatically terminate the script? I just tried doing it and it doesn't seem to be working, it just sort of freezes up after about a second. Maybe I am not doing it correctly.. On Sat, Nov 23, 2019 a

Re: [USRP-users] USRP N310 Losing Connection Occassionally

On 11/23/2019 05:48 PM, Austin Adam wrote: Hey Marcus, Thank you for the quick response! This sounds like a good solution, could you give some insight on how to go about doing it? Thank you so much! The "head" block takes a number, which is the count of samples that it will allow through it b

Re: [USRP-users] USRP N310 Losing Connection Occassionally

I seem to also be getting this error occasionally, which also results in the N310 disconnecting. Maybe it will provide more insight: * [32;1m[INFO] [UHD] [39;0mlinux; GNU C++ version 8.3.0; Boost_106700; UHD_3.14.0.HEAD-0-g6875d061 [32;1m[INFO] [MPMD] [39;0mInitializing 1 dev

Re: [USRP-users] USRP N310 Losing Connection Occassionally

Hey Marcus, Thank you for the quick response! This sounds like a good solution, could you give some insight on how to go about doing it? Thank you so much! On Sat, Nov 23, 2019 at 2:32 PM Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 11/23/2019 03:49 PM, Austin Adam vi

Re: [USRP-users] USRP N310 Losing Connection Occassionally

On 11/23/2019 03:49 PM, Austin Adam via USRP-users wrote: I am trying to run a Gnu Radio python file via the terminal and only want to run in for a few seconds and then kill it. Then, wait a little bit, and rerun the script again. My problem is that sometimes, when I rerun it, I get an issue wi

[USRP-users] USRP N310 Losing Connection Occassionally

I am trying to run a Gnu Radio python file via the terminal and only want to run in for a few seconds and then kill it. Then, wait a little bit, and rerun the script again. My problem is that sometimes, when I rerun it, I get an issue with my USRP N310 in that it decides to just disconnect with eit

Re: [USRP-users] USRP N310 Phase Bouncing Issue

[USRP-users] USRP N310 Phase Bouncing Issue On 09/23/2019 10:12 PM, Austin Adam via USRP-users wrote: Hi USRP Users, Currently we are taking a signal from a signal generator, splitting it four ways, and connecting it to the receiving ports of the USRP N310. We are using a USRP N210 as an external

Re: [USRP-users] USRP N310 Phase Bouncing Issue

On 09/23/2019 10:12 PM, Austin Adam via USRP-users wrote: Hi USRP Users, Currently we are taking a signal from a signal generator, splitting it four ways, and connecting it to the receiving ports of the USRP N310. We are using a USRP N210 as an external local oscillator (splitting the output

[USRP-users] USRP N310 Phase Bouncing Issue

Hi USRP Users, Currently we are taking a signal from a signal generator, splitting it four ways, and connecting it to the receiving ports of the USRP N310. We are using a USRP N210 as an external local oscillator (splitting the output into the RX LO ports on the N310) to help synchronize the four

Re: [USRP-users] USRP N310 Cannot ping or connect

s-boun...@lists.ettus.com>> on behalf of Austin Adam via USRP-users mailto:usrp-users@lists.ettus.com>> *Sent:* Thursday, September 5, 2019 10:41 PM *To:* Marcus D. Leech *Cc:* usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.c

Re: [USRP-users] USRP N310 Cannot ping or connect

0 >>> Getting Started guide to upgrade the SD card to the latest filesystem >>> release (UHD v3.14.1.0, if memory serves) and then update UHD on your host >>> PC. >>> >>> RMA replaces the SD card with the latest one on the BOM, which in May >>

Re: [USRP-users] USRP N310 Cannot ping or connect

gt;> *Sent:* Thursday, September 5, 2019 10:41 PM *To:* Marcus D. Leech *Cc:* usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com> *Subject:* Re: [USRP-users] USRP N310 Cannot ping or connect Hi there, Thank you for the respon

Re: [USRP-users] USRP N310 Cannot ping or connect

thing. >> >> >> ---------- >> *From:* USRP-users on behalf of >> Austin Adam via USRP-users >> *Sent:* Thursday, September 5, 2019 10:41 PM >> *To:* Marcus D. Leech >> *Cc:* usrp-users@lists.ettus.com >> *Subject:* Re: [USRP-users] USRP

Re: [USRP-users] USRP N310 Cannot ping or connect

. > > > -- > *From:* USRP-users on behalf of > Austin Adam via USRP-users > *Sent:* Thursday, September 5, 2019 10:41 PM > *To:* Marcus D. Leech > *Cc:* usrp-users@lists.ettus.com > *Subject:* Re: [USRP-users] USRP N310 Cannot ping or connect >

Re: [USRP-users] USRP N310 Cannot ping or connect

Hi there, Thank you for the response. I am indeed connected to the SFP0 port to a 1gigE connection. Everything was working fine before I sent out the USRP for repairs, so I don’t think it’s a cable or connection issue. I appreciate you looking into the issue further, hopefully we can figure out

Re: [USRP-users] USRP N310 Cannot ping or connect

Hey Robin, Sorry about that. I tried responding through the forum but it doesn’t seem to be working. I gave it a few minutes to see if my response went through but it didn’t, so I just responded directly to the email. If it doesn’t work next time I try, then I guess the best thing to do would be

Re: [USRP-users] USRP N310 Cannot ping or connect

Hi Austin. Let's keep this thread on the usrp-users list so other people might benefit from it. Unless you have a dedicated PCIe (or Thunderbolt) 10gigE network adapter connected to your host PC, the connection is most likely 1gigE. What is the output when you invoke the following command from t

Re: [USRP-users] USRP N310 Cannot ping or connect

Hi Austin. Is *enx70886b87f283 *a 1 gigE or 10gigE connection? If it's 1gigE, my guess is that your problem may be that the new SD card is loading the XG FPGA image, which expects 10 gigE connections to the host on both ports SFP0 and SFP1. You'll need to update the SD card to load the HG image

Re: [USRP-users] USRP N310 Cannot ping or connect

On 09/05/2019 10:28 PM, Austin Adam via USRP-users wrote: I recently had my USRP N310 sent out for repairs to fix one of the SMA connectors, and when it came back, there was a new SD card in the slot. When I turned it on after getting it back, I was unable to connect to it via 'uhd_find_devices

[USRP-users] USRP N310 Cannot ping or connect

I recently had my USRP N310 sent out for repairs to fix one of the SMA connectors, and when it came back, there was a new SD card in the slot. When I turned it on after getting it back, I was unable to connect to it via 'uhd_find_devices'. I figured it was something with the SD card, so I eventuall

Re: [USRP-users] USRP N310 & RFNOC

Hi, we just pushed changes to the script live. However, you should be able to build an RFNoC image by modifying the rfnoc_ce_auto_inst_n310.v, and building an RFNoC image, e.g. by running $ make N310_RFNOC_HG Cheers, Martin On 06/20/2018 06:52 AM, Rob Kossler via USRP-users wrote: > Hi Dere

Re: [USRP-users] USRP N310 & RFNOC

Hi Derek, In the meantime, would you be able to describe the steps that are necessary to modify the script (and any other files) for the N310? We are in the process of trying to compile an image and we are running into some difficulties. Rob On Fri, Jun 15, 2018 at 7:35 AM, Derek Kozel via USRP-

Re: [USRP-users] USRP N310 & RFNOC

Hello Dr Henarejos, The N310 has the same level of RFNoC support as the X310, the same blocks can be used on either. They use a common architecture so the structure and properties are essentially unchanged. The uhd_image_builder is in the process of having N310 support added, that should be releas

[USRP-users] USRP N310 & RFNOC

Dear all, - Which is the state of development of RFNOC in the new USRP N310? I cannot find any reference to N310 in the RFNOC documentation. - Which is the number of RFNOC blocks available in the N310 images? - Is uhd_image_builder_gui prepared for N310? Regards. -- Dr. Pol Henarejos Researc

Re: [USRP-users] USRP N310's schematics

Hi Derek, Thank you for your reply.We just want to check it for FPGA development. Thank you, best regards Jon 2018-06-08 14:54 GMT+08:00 Derek Kozel : > Hello Jon, > > The schematics are still being readied for posting to the website. I'm > sorry for the delay in having them available. Do you

Re: [USRP-users] USRP N310's schematics

Hello Jon, The schematics are still being readied for posting to the website. I'm sorry for the delay in having them available. Do you have any specific questions that I might be able to answer in the meanwhile? The files will be posted to the Knowledge Base when they are ready. https://kb.ettus.c

[USRP-users] USRP N310's schematics

Hi all, Could you tell us where we can download USRP N310's schematics. Thank you. best regards Jon ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

On 05/13/2018 08:45 PM, David Bengtson wrote: On a side note, the combination of wideband LNA's in front of wideband radios is generally something to be careful of, as strong signals out of band can cause problems. Bandpass filtering in front of LNA's can be a very good idea to think about. Th

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

On Sun, May 13, 2018 at 4:34 PM, Marcus D. Leech via USRP-users wrote: > On 05/13/2018 04:25 PM, Zhongyuan Zhao wrote: > > Thank you for the response. 3.6dB NF is not impressive however I was > considering a wideband LNA as an once-for-all solution for the entire > frequency range 50-6000MHz of N

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

On 05/13/2018 04:25 PM, Zhongyuan Zhao wrote: Thank you for the response. 3.6dB NF is not impressive however I was considering a wideband LNA as an once-for-all solution for the entire frequency range 50-6000MHz of N310. Let me re-phrase the question in two different ways: 1) What is the mini

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

Thank you for the response. 3.6dB NF is not impressive however I was considering a wideband LNA as an once-for-all solution for the entire frequency range 50-6000MHz of N310. Let me re-phrase the question in two different ways: 1) What is the minimal discernible signal (MDS) at the input of the N

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

On 05/13/2018 03:24 PM, David Bengtson via USRP-users wrote: The Receiver Noise figure should include sampling noise and ADC ENOB. Is that a free space path loss? You don't have any design margin for fades/blockages etc, so an External LNA might be a good idea. 3.6 dB NF isn't particularly low fo

Re: [USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

The Receiver Noise figure should include sampling noise and ADC ENOB. Is that a free space path loss? You don't have any design margin for fades/blockages etc, so an External LNA might be a good idea. 3.6 dB NF isn't particularly low for a LNA, but it will help. On Sun, May 13, 2018 at 3:49 AM, Zh

[USRP-users] USRP N310 Receiver Noise Floor, Sensitivity

Hi, I am trying to calculate the link budget for USRP N310. Suppose I want a SNR of 20dB, the signal bandwidth is 10MHz, the thermal noise floor is -103.9dm. Receiver noise figure is 5.8dB (N310 datasheet 5.8dB @1.8GHz) Rx Antenna Gain 6dBi Path loss: 120dB Tx Antenna Gain 6dBi RF cable Loss (RX+