[Discuss-gnuradio] external source clock in USRPs

Hi all, I am writing to you regarding the external source clock using N200 with UBX-40. I need to connect the external source because I am working with two USRPs . I am working on GNU radio and I detect a different behavior of Rxs if I set the external source clock in USRP source sink module. If t

Re: [Discuss-gnuradio] Phase Align two RFNoC Radio Blocks in GRC

Hi Felix and community, I have the same problem with the phase offset. I read that if you control the CORDIC module, you can synchronize the phase in USRPs. I found the following commands for UHD for receiver and for transmitter: uhd::stream_cmd_t

[Discuss-gnuradio] to control CORDIC module to synchronize in USRP through GNU Radio

Hi all, I am working with GNU Radio 3.7.13.4, two N200 USRPs and a X310. I would like to control the CORDIC module because I wuold like to synchronize the phase in USRPs. I found the following commands for UHD for receiver and for transmitter: uhd::stream_cmd_t

Re: [Discuss-gnuradio] smith chart on GNU radio

t; [1] - https://github.com/mitul93/gr-smithchart > > > Regards, > Nate Temple > > On Tue, Aug 6, 2019 at 10:14 AM Simona Sibio wrote: > >> Hi all, >> >> I am working with GNU radio 3.7.13.4 and I would like to plot my data on >> the smith chart. >>

[Discuss-gnuradio] smith chart on GNU radio

Hi all, I am working with GNU radio 3.7.13.4 and I would like to plot my data on the smith chart. Do you know if there is some module or some method? Thank you for your time. Best regards, Simona ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.o

Re: [Discuss-gnuradio] turn off DC offset

Thank you very much!! This was the problem. Now, it works fine. Best Regards, Simona Il giorno mar 30 lug 2019 alle ore 18:38 Julian Arnold < jul...@elitecoding.org> ha scritto: > > We fixed it here <...> > > Sweet! Thanks for pointing that out. > > Julian > > On 30.07.19 19:24, Michael Dickens

Re: [Discuss-gnuradio] turn off DC offset

t; to "False" in "top_block.py" and DC offset > tracking should be disabled. Remember to not regenerate the flow-graph > after making those changes as otherwise GRC will override your changes. > > Alternatively, you can of course always simply add the line > self.u

Re: [Discuss-gnuradio] turn off DC offset

application (whether GNU Radio or > whatever), and report back the displayed debugging info? > > On Tue, Jul 30, 2019, at 9:56 AM, Simona Sibio wrote: > > Of course, I am using Linux, the GNU radio version is 7.3.0 and UHD > version is UHD.3.13.1. > > And, I would like to

Re: [Discuss-gnuradio] turn off DC offset

critto: > OK. So did the change help for the IQ imbalance? Are you sure there is > a DC offset to be removed? > > Can you provide us with a little more info: which OS & version? Which GNU > Radio & UHD versions and how installed? - MLD > > On Tue, Jul 30, 2019, at 9:2

Re: [Discuss-gnuradio] turn off DC offset

ce you're working in the GRC domain, you need to use > variables that make sense in Python ... "False" and "True" -- but without > the ""s. "0" is not necessarily "False", etc... try those & see what > happens. Hope this is us

[Discuss-gnuradio] turn off DC offset

*Hi everyone,* *I want to disable automatic calibration of DC offset and IQ imbalance in** USRP Source block. **I am aware that I need to pass bool value 'false' as the argument to ***set_auto_dc_offset* and *set_auto_iq_balance*. The USRP Source block **itself provide this facility in the tab *FE

Re: [Discuss-gnuradio] USRP GNU radio receiver

depends on DC in a zero-IF receiver, > because the DC offset error will change over frequency, temperature, time, > etc. > > On Thu, Jul 18, 2019 at 4:29 AM Simona Sibio wrote: > >> Hi all, >> >> Thank you very much for your emails. >> But no tip works fine. >>

Re: [Discuss-gnuradio] USRP GNU radio receiver

RF > book/website/guide or talk with your advisor. > > > > UHD-USRP clips anything above 1 if left in the default setting (float I > guess) and there will be a lot of garbage in the sent spectrum. > > > > Cheers, > > Jonas > > > > *From:* Discuss-gnuradio

Re: [Discuss-gnuradio] USRP GNU radio receiver

lot of garbage in the sent spectrum. > > > > Cheers, > > Jonas > > > > *From:* Discuss-gnuradio [mailto:discuss-gnuradio-bounces+jonas.manthey= > u-blox@gnu.org] *On Behalf Of *Simona Sibio > *Sent:* Donnerstag, 18. Juli 2019 13:01 > *To:* Kyeong Su Shin > *Cc

Re: [Discuss-gnuradio] USRP GNU radio receiver

le with a hardware block. GRC's log will actually > shout at you that you shouldn't be doing that! > 2. I must admit this is about as good as I'd expect. I of course can't > infer temporal behaviour from screenshots. > > Best regards, > Marcus > > On Wed, 2019-07

Re: [Discuss-gnuradio] USRP GNU radio receiver

and amplitude a, > s(t) = a·e^{j2\pi f t) would be transmitted as > > a·e^{j2\pi f t)·e^{j2\pi f_{carrier}t} = a·e^{j2\pi (f+f_{carrier})t} > > so, identical to the constant signal, just at a different frequency. > > > Best regards, > Marcus > > On Tue, 2019-07-16 at

Re: [Discuss-gnuradio] USRP GNU radio receiver

impulse. > > And yes, as Marcus said, increase the sampling rate! > > > > > > On Tue, 16 Jul 2019 at 18:06, Simona Sibio wrote: > > > Thank you for the assistance. > > > > > > I put the module "constant source" in my flow grap. > > > Wi

Re: [Discuss-gnuradio] USRP GNU radio receiver

that. Use a higher rate. > > Best regards, > Marcus > > On Tue, 2019-07-16 at 17:05 +0100, Simona Sibio wrote: > > Thank you for the assistance. > > > > I put the module "constant source" in my flow grap. > > With this module, I can choose witch amplitude

[Discuss-gnuradio] USRP GNU radio receiver

Hi all, I want to use GNU radio to measure the amplitude and the phase of a signal. I send a constant signal with the transmitter USRP but in the receiver there is a flat signal with amplitude 0 and offset 0. I tried to send a sine signal and the receveir works fine. How can I do to send only a co

[Discuss-gnuradio] Digital pre-distortion

Dear Sir/Madam, I am writing to you regarding the digital pre-distortion technique. I would use this DPD on GNU radio, I read that there is available only a part. How can I do? Is it necessary a particolar hardware? I am using GNU radio on N310 ettus research. Thank you for your time and every he