Re: [USRP-users] External LO amplitude issue

Are you plotting a absolute magnitude or just the magnitude in real/imag axis ? If this is the magnitude for real or imag signal alone, then the result makes sense. Since the cable length and several factors will result in different projection value of the total magnitude in each real and imag axi

Re: [USRP-users] Coherent receiver configuration failure for two X310 equipped with 4 TwinRx

equal phase delay >> >> or >> >> (B) You have some continuous, but distant, signal source that is "seen" >> by all your receivers >> >> or >> >> (C) Other schemes that achieve the same thing >> >> The key is that you have to meas

Re: [USRP-users] Coherent receiver configuration failure for two X310 equipped with 4 TwinRx

; usrp-users@lists.ettus.com> wrote: > On 09/13/2018 08:52 PM, Jack Yang via USRP-users wrote: > > Hi, > > > > I am trying to set up a 8 channels coherent receiver where I am using > > two X310 and each X310 is equipped with two TwinRx. However, the phase > > alignment

Re: [USRP-users] Time alignment failure for four channels coherent receiver in X310

stream_cmd.time_spec = usrp->get_time_now() + 0.05; > > ? > > I have seen the same behavior on my B210 in dual channel RX setups when > starting the streamer immediately. So maybe this helps. > > Cheers, > Julian > > On 29.07.2018 21:23, Jack Yang via USRP-users wrote:

Re: [USRP-users] Time alignment failure for four channels coherent receiver in X310

29, 2018 at 9:35 AM, Marcus D. Leech via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> On 07/29/2018 12:52 AM, Jack Yang via USRP-users wrote: >> >> Hi, >> >> I have rewrote "rx_samples_to_file.cpp" for making four channel coherent >

Re: [USRP-users] Time alignment failure for four channels coherent receiver in X310

Hi Marcus, Thanks for your mail. Yes, I am using 10GiGe interface to run the UHD C++ code. Any thoughts or suggestions? All Best, Jack On Sun, Jul 29, 2018 at 9:35 AM, Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 07/29/2018 12:52 AM, Jack Yang via USRP-us

[USRP-users] Time alignment failure for four channels coherent receiver in X310

Hi, I have rewrote "rx_samples_to_file.cpp" for making four channel coherent receiver (phased-array receiver) in X310. When I executed my code, the terminal showed that *[ERROR] [STREAMER] The receive packet handler failed to time-align packets. 1002 received packets were processed by the handler

Re: [USRP-users] Random Phase Offset Between Two Rx Channels of B210 ???

Hi I would like to follow up this conversation. Is it possible to have a constant initial phase offset for every run when power is up? I knew the B210 can remains constant phase offset across two receivers during the operation. However, the challenge for me is that whenever power is up, the initial