Re: [USRP-users] OTT Gain Block stopping samples flowing from RFNoC Digital Down Converter

Hi Rob, On 17/02/21 13:38, Rob Kossler wrote: > Could this be another case of the "issue_stream_cmd" never making it from > the streamer to the Rx radio? Cédric, didn't we find that if you don't > have a custom block controller, the stream cmd does not propagate as expect > to the Radio and thus

[USRP-users] GPSDO fails to lock

Hi all, I have some N310s and a B210 that I try to sync with a GPSDO. All of them recognize their GPSDOs but fail to lock. My phone can see ~7 Satellites. We have a RPi with a GPS module that locks to GPS in the same hall. We switched antennas but still, we can't sync any of the USRPs to GPS

Re: [USRP-users] User register on X300 UHD 3.9

Hi Marcus, On 17/02/21 18:39, Marcus Müller via USRP-users wrote: > not that hard: you need an instance of settings_register, which you connect > to the > appropriate settings bus. Would you mean 'setting_reg' instead? There is no instance of 'settings_register' in the fpga-src/usrp3 tree. > It

Re: [USRP-users] GPSDO fails to lock

Just a quick follow-up. The B210 finally got a GPS lock. (I had to wait for ~2h). Though, all N310s still don't. On 18.02.21 10:12, Johannes Demel via USRP-users wrote: Hi all, I have some N310s and a B210 that I try to sync with a GPSDO. All of them recognize their GPSDOs but fail to lock.

Re: [USRP-users] OTT Gain Block stopping samples flowing from RFNoC Digital Down Converter

Cedric, Rob, Thanks for your help. It sounds like this is the issue. I’ll give the workaround a try next time I’m in the office. Mark Sent from Mail for Windows 10 From: Cédric Hannotier via USRP-users

Re: [USRP-users] rfnoc_image_builder error with clock domain

Aaron, Yes, that is the solution.  I saw that when looking at another YAML file in the source folders.  That is a typo in AN-400 that should probably be fixed.  In the section describing adding a FFT block to the receive chain: clk_domains: ... # As before, we still connect our F

Re: [USRP-users] rfnoc_image_builder error with clock domain

On Thu, Feb 18, 2021 at 7:28 AM Mike via USRP-users < usrp-users@lists.ettus.com> wrote: That is a typo in AN-400 that should probably be fixed. > Indeed it is! Good catch, and my apologies for the inconvenience. Glad you found the resolution. I've filed an issue on GitHub to update the applicat

Re: [USRP-users] GPSDO fails to lock

How are you delivering the GPS antenna signal to the USRPs? Via a splitter? Does that splitter provide DC pass-through? Sent from my iPhone > On Feb 18, 2021, at 7:07 AM, Johannes Demel via USRP-users > wrote: > > Just a quick follow-up. The B210 finally got a GPS lock. (I had to wait for

Re: [USRP-users] OTT Gain Block stopping samples flowing from RFNoC Digital Down Converter

Hi Cédric, Following our previous discussion on the topic of building the controllers in-tree or out-of-tree, I was able to successfully build my controllers out-of-tree and they seem to work fine (with my custom application). One negative for building OOT is that the Ettus uhd_usrp_probe example d

Re: [USRP-users] OTT Gain Block stopping samples flowing from RFNoC Digital Down Converter

Hi Rob, On 18/02/21 10:57, Rob Kossler via USRP-users wrote: > Following our previous discussion on the topic of building the controllers > in-tree or out-of-tree, I was able to successfully build my controllers > out-of-tree and they seem to work fine (with my custom application). OOT blocks wit

Re: [USRP-users] gr-ettus cmake fail

Here is some additional information on this problem. Bottom line: Has anyone cross-compiled gr-ettus for E310 using UHD4.0 and gnuradio 3.8 on either Ubuntu 18.04 or 20.04? This cmake error occurs with both Ubuntu 20.04 and 18.04.  It appears to be an issue with UHD4.0 configurations.  I've be

Re: [USRP-users] OTT Gain Block stopping samples flowing from RFNoC Digital Down Converter

I previously did not have the link options correct for building OOT. If you look in the CMakeLists.txt file in the Ettus rfnoc example apps folder, you will see a link option "-Wl,--no-as-needed". I didn't look into it thoroughly, but without that option, the OOT blocks do not get linked in (or a

[USRP-users] x310 two UBX daughterboard receiver

Hi, I am using a x310 USRP with two UBX daughterboards. Now I can transmit and receive the signal in RF A daughterboard with command self.source.set_antenna("RX2", 0) self.sink.set_antenna("TX/RX", 0). Now, I want to transmit the signal in RF A, and receive the signal in both RF A

Re: [USRP-users] x310 two UBX daughterboard receiver

Just create a 2-channel USRP source and specify a subdev of “A:0 B:0”. Sent from my iPhone > On Feb 18, 2021, at 7:38 PM, Xiang Ma via USRP-users > wrote: > >  > Hi, > > I am using a x310 USRP with two UBX daughterboards. Now I can transmit > and receive the signal in RF A daughterbo

Re: [USRP-users] x310 two UBX daughterboard receiver

Do you have any example code? I am still confused. Thank you. On Thu, Feb 18, 2021 at 5:50 PM Marcus D Leech wrote: > Just create a 2-channel USRP source and specify a subdev of “A:0 B:0”. > > > > Sent from my iPhone > > On Feb 18, 2021, at 7:38 PM, Xiang Ma via USRP-users < > usrp-users@list

Re: [USRP-users] x310 two UBX daughterboard receiver

Well there’s the rx_multi_samples example that is part of the UHD source tree. Sent from my iPhone > On Feb 18, 2021, at 9:32 PM, Xiang Ma wrote: > >  > Do you have any example code? I am still confused. > > Thank you. > >> On Thu, Feb 18, 2021 at 5:50 PM Marcus D Leech >> wrote: >> Jus

Re: [USRP-users] x310 two UBX daughterboard receiver

Are there any python code for this? I am using the python interface. On Thu, Feb 18, 2021 at 7:44 PM Marcus D Leech wrote: > Well there’s the rx_multi_samples example that is part of the UHD source > tree. > > Sent from my iPhone > > On Feb 18, 2021, at 9:32 PM, Xiang Ma wrote: > >  > Do you

Re: [USRP-users] x310 two UBX daughterboard receiver

On 02/18/2021 10:16 PM, Xiang Ma wrote: Are there any python code for this? I am using the python interface. You'll have to kind of infer what to do from the C++ example--there is no Python version of that example. On Thu, Feb 18, 2021 at 7:44 PM Marcus D Leech mailto:patchvonbr...@gmail.c

Re: [USRP-users] x310 two UBX daughterboard receiver

If I want to use slot A as transmitter, slot B as receiver, can I do like this: self.source.set_antenna("RX2", 1) self.sink.set_antenna("TX/RX", 0) In this page, it said *The default subdev spec is "A:0 B:0", which means slot A is mapped to channel 0, and slot B is mapped to channel 1.* http://lis

Re: [USRP-users] x310 two UBX daughterboard receiver

On 02/18/2021 11:47 PM, Xiang Ma wrote: If I want to use slot A as transmitter, slot B as receiver, can I do like this: self.source.set_antenna("RX2", 1) self.sink.set_antenna("TX/RX", 0) You'd need to set the antenna for the receive side in both slots to "RX2": self.source.set_antenna("RX2",