Re: [USRP-users] twinrx consistent phase offset

2020-11-18 Thread Dustin Widmann via USRP-users
On Thu, 2020-11-12 at 13:25 -0500, Marcus D. Leech wrote: > On 11/11/2020 11:11 PM, Dustin Widmann wrote: > > Hi Marcus > > > > I've given this a try, unfortunately I'm running into a problem > > with > > that. I've always gotten strange crashes with UHD 3.15 with this > > codebase (probably my fa

Re: [USRP-users] twinrx consistent phase offset

2020-11-12 Thread Marcus D. Leech via USRP-users
On 11/11/2020 11:11 PM, Dustin Widmann wrote: Hi Marcus I've given this a try, unfortunately I'm running into a problem with that. I've always gotten strange crashes with UHD 3.15 with this codebase (probably my fault, but I'm not sure why yet). I can collect around ~200 datapoints-ish (about 20

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Dustin Widmann via USRP-users
Hi Marcus I've given this a try, unfortunately I'm running into a problem with that. I've always gotten strange crashes with UHD 3.15 with this codebase (probably my fault, but I'm not sure why yet). I can collect around ~200 datapoints-ish (about 20-ish retunes of the receiver), before it crashes

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Marcus D. Leech via USRP-users
On 11/11/2020 08:34 PM, Dustin Widmann wrote: Hey Marcus, I'm using UHD 4.0.0;; [INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_106700; UHD_4.0.0.0-1- gcf570707 I had stumbled on the "tune twice" thing quite accidentally (I don't think I ran into any documentation on it, I was just trying to

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Dustin Widmann via USRP-users
Hey Marcus, I'm using UHD 4.0.0;; [INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_106700; UHD_4.0.0.0-1- gcf570707 I had stumbled on the "tune twice" thing quite accidentally (I don't think I ran into any documentation on it, I was just trying to test for repeatability with a single frequency,

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Marcus D. Leech via USRP-users
On 11/11/2020 06:20 PM, Dustin Widmann wrote: Thanks for the quick response Marcus! It seems to be fairly frequency dependent. I'm attaching a link to a data file so y'all can take a look at what I mean. I ran a dense-ish sweep several times to try to get a feel for how reproducible things were

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Dustin Widmann via USRP-users
Thanks for the quick response Marcus! It seems to be fairly frequency dependent. I'm attaching a link to a data file so y'all can take a look at what I mean. I ran a dense-ish sweep several times to try to get a feel for how reproducible things were /etc. The transmitter was retuned at each freque

Re: [USRP-users] twinrx consistent phase offset

2020-11-11 Thread Marcus D. Leech via USRP-users
On 11/11/2020 11:26 AM, Dustin Widmann via USRP-users wrote: Hi usrp-users! I'm still relatively inexperienced with working with UHD and USRP radios in general, but I feel like I'm getting better. Anyhow, I have *several* questions, but I'll start with one. Setup: USRP X310 Radio: A:UBX, B:Twin

[USRP-users] twinrx consistent phase offset

2020-11-11 Thread Dustin Widmann via USRP-users
Hi usrp-users! I'm still relatively inexperienced with working with UHD and USRP radios in general, but I feel like I'm getting better. Anyhow, I have *several* questions, but I'll start with one. Setup: USRP X310 Radio: A:UBX, B:TwinRX If you're familiar with a "reflectometer", it's setup like