Re: [USRP-users] 2x N200 GPSDO PPS relative drift

2018-11-16 Thread Stephan Esterhuizen via USRP-users
; On Sat, Nov 10, 2018 at 9:33 AM Stephan Esterhuizen via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hi Robin, >> >> Thank you for the reply. I have debugged the problem more and realized >> two issues. >> >> 1) The massive drift of 14 micro

Re: [USRP-users] 2x N200 GPSDO PPS relative drift

2018-11-10 Thread Stephan Esterhuizen via USRP-users
ther helpful measurement would be to measure the voltage drop of the 6V > wall wart when the GPSDO IS powered by the N210 motherboard. > > We will keep you and list updated on the progress of the investigation. > > -Robin > > > On Fri, Nov 9, 2018 at 3:06 AM Stephan Esterhuiz

Re: [USRP-users] B210 distributed MIMO with GPSDO

2018-10-10 Thread Stephan Esterhuizen via USRP-users
to me whether that was a *single* GPSDO whose outputs > were being distributed, or whether this >was individual B210s with on-board GPSDOs distributed over several > kilometers. > > So, Stephan, which case is it? > > > > > > On Tue, 2018-10-09 at 09:32 +0200, St

[USRP-users] B210 distributed MIMO with GPSDO

2018-10-09 Thread Stephan Esterhuizen via USRP-users
Hi All, I'm looking at using multiple B210s synchronized with GPSDO distributed over a few kilometers. The idea is to measure time-of-arrival of a signal source. I understand the limitations of the GPSDO 1pps & 10 MHz reference frequency/time stability. What I'm curious about is whether anybody