[USRP-users] UBX coherence between TX and RX

2019-03-23 Thread Michael R. Freedman via USRP-users
Hello, I have an issue where I tune both the TX and RX side of a UBX40 card in an X310 to the same frequency and find that the transmitted signal and what is received are not coherent.  I am using an external 10MHz reference and have tried the documented suggestions. at 150MHz it is

Re: [USRP-users] What makes sense and what doesn't in the way carrier frequency is set for TwinRX currently?

2019-03-23 Thread Nate Temple via USRP-users
Hi Piotr, A quick update -- we have root caused the issue and will have an update that fixes it on the 3.14.0.0 release. Regards, Nate Temple On Sat, Mar 23, 2019 at 8:14 AM Piotr Krysik via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi all, > > Update to the previous post. Nate Temple

Re: [USRP-users] What makes sense and what doesn't in the way carrier frequency is set for TwinRX currently?

2019-03-23 Thread Piotr Krysik via USRP-users
Hi all, Update to the previous post. Nate Temple on IRC pointed that what I observe might be a result of a bug in recent UHD's, where co-channel phase difference on TwinRX doesn't behave as expected. Nate's advice was to go back to UHD 3.13, which I did (I took the top from UHD-3.13 branch). I

Re: [USRP-users] API for N310

2019-03-23 Thread Janos Buttgereit via USRP-users
Hi, phase synchronous operation of the N310 should not really be a matter of the API you choose but a matter of your configuration (which you can achieve with all the APIs available). If you look at the posts I made to the mailing list in the last few days, you will find some information

[USRP-users] E320 SD Image lacking libraries; cross-compile help

2019-03-23 Thread Chris Gobbett via USRP-users
We’ve just purchase a shiny new E320 or three and are looking to translate some gnuradio-generated python code from an E310 across, but I’m having problems which weren’t apparent during development for the E310. Some differences which took me by surprise: - The Python2.7 libraries are severely