[USRP-users] N210 transmits and receives using the same antenna

Hi All: I am using N210 (with SBX daughter board) to test the channel reciprocity. I wish to transmit signal using antenna "Tx/Rx" in time slot 1, and then receive signal using the same antenna in time slot 2, and so on so forth. I can do this manually, but do not know how to do it by programming

[USRP-users] RFNoC build issue for OOT block

Hi, I am having trouble building an image with an OOT block for the N310. The build error is provided below (highlighted in YELLOW). Essentially, the OOT source code is not found. This happens even on the latest master branch. However, there is no issue if I target the X310 instead. I think that

Re: [USRP-users] Building N310 replay example

Rob, You are correct, the FPGA change is only part of the fix. There will be a fix to the script as well. Either clock can work, but about 8 months ago the clock was changed from radio_clk to bus_clk for the default instance. Thanks, Wade On Mon, Oct 29, 2018 at 4:37 PM Rob Kossler wrote: > H

Re: [USRP-users] Building N310 replay example

Hi Wade, I see that a new rfnoc_ce_auto_inst_n310.v has been committed to github to address this issue (commit 8b37fd8). But, I don't see what good this will do given that this file is auto-generated by the uhd_image_builder.py script which will just overwrite this file. Additionally, the script

Re: [USRP-users] Ettus x310 shutoff delay when using low sample rate

All, Can anyone else reproduce this issue and/or suggest a solution? This is happening over the Ethernet interface as well. Application exits, Tx light stays on, relaunching application causes X310 to enter an unrecoverable state and requires power cycling. It looks like an issue with initializin

[USRP-users] RFNoC Replay block for E310?

Hi, I have successfully compiled & used the RFNoC replay block with an X310. Now, I would like to do the same with an E310. After some quick investigation, I noticed that the "use_replay" logic has been included in both "n3xx_core.v" and "x300_core.v" but not in "e310_core.v" or any other E310 ver

Re: [USRP-users] Differences between LOs: companion, internal, external.

On 10/29/2018 06:39 AM, Anabel Almodovar via USRP-users wrote: Dear Marcus, Thank you very much, now I see it clearer. In case I had to connect several x310s with the same LO, as shown in the image, if I indicate that channel 1 exports and works as internal mode then channel 1 wouldn't use th

Re: [USRP-users] Saturation issue with low amplitude (USRP N310)

I think I am seeing the same or a similar problem using the latest master (which I think is roughly equivalent to 3.13.0.3 RC1, correct me if I am wrong) on an N310. When I save a signed 16-bit binary file and feed it into the replay_sample_from_file example, I can only provide it with a full-sc

Re: [USRP-users] Saturation issue with low amplitude (USRP N310)

Hi all, any news on this saturation issue concerning the N310 with UHD 3.13.0.3 RC1? I would like to know if Ettus is aware of this problem, and if a new UHD version is coming with a correction? Thanks! Best regards, Serge - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

[USRP-users] Calculate packet error rate using rx-ofdm

Hello, I am currently working with USRP for the gr-digital ofdm rx and tx. I want to know any reasonable way to calculate the packet error rate. I am using the signal source at the transmit side while I am planning to get the loss in packet at the receiver side. Currently, i looked at a dated back

Re: [USRP-users] Differences between LOs: companion, internal, external.

Dear Marcus, Thank you very much, now I see it clearer. In case I had to connect several x310s with the same LO, as shown in the image, if I indicate that channel 1 exports and works as internal mode then channel 1 wouldn't use the LO that comes from LO in? if I haven't misunderstood, channel 1 sh