[USRP-users] Re: Align multi-channel captures with different rx_stremers

2024-02-07 Thread zackkomo
Actually I was running it wrong… The md.time_spec on each of my thread/channel’s first call to rx_streamer->recv returns the same full and fractional seconds from md.time_spec, but my method of checking against the estimated time form the GPS signal still returns about a 700ns difference. __

[USRP-users] Re: Align multi-channel captures with different rx_stremers

2024-02-07 Thread zackkomo
I have no clue how to explain it but .. I added just getting the timestamp from the metadata on my first rx_streamer->recv call and magically now the timestamps are aligned, and my aforementioned method of checking the timestamp also agrees. This works for the rates I originally mentioned I was

[USRP-users] Re: Align multi-channel captures with different rx_stremers

2024-02-07 Thread Rob Kossler via USRP-users
On Tue, Feb 6, 2024 at 5:50 PM wrote: > > It’s an estimated difference using a GPS SDR I have access to, not the > timestamps in the metadata. > > I just tired choosing different sampling rates, it seems like when I use > pairs of sampling rates corresponding to odd divisions of the master clock