I could be wrong, but I thought the SBX was one of the few daughter cards that starts with s known phase offset?
On Sun, Sep 10, 2017, 2:49 PM Fulcrum Associates <sla1nte2...@gmail.com> wrote: > Dear All, > > I have a couple of USRPs connected, through a strong > attenuator to a signal generator (NWT4001). While the units have a MIMO > option, I don't have that cable. (Option A) When I run the GRC as > attached, I see too good a result to the extent that the differential > Phi seems to range over +/- 5 degrees. > > > What I had hoped to prove to myself that two N200 with SBX > would have a varying offset without MIMO cable, then I would connect the > MIMO cable and move the USRPs into a multi-unit and enable GPSD O/B on > the unit which has the feature and MIMO for one without (Option B) and > that the phase differential would improve noticeably and be a variable > constant, but it didn't. > > > If it had, but there still was a fixed phase offset which > varied each time it was setup (which is what I would expect under B) > then I would hand-code the SBX stream initialisation code to remove the > offset. > > > Does my FG not measure what I claim to be wishing to > measure? > > If it does measure it correctly, why do my expectations > of options A and B leading to a different (though improved) situation > not eventuate? > > > Kind Regards, > > > John > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Very Respectfully, Dan CaJacob
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