Hi Marcus and all, The X310 has three leds in the front panel (among others): REF, PPS, GPS When I turn on the USRP none of them is lit. When I execute "uhd_usrp_probe" from the terminal the the REF lights up and the PPS starts blinking. What is the meaning of this? (I am not connected to any REF source ...)
thanks Achilleas On Thu, Oct 14, 2021 at 3:50 PM Marcus D Leech <[email protected]> wrote: > Using uhd_usrp_probe is one way. You can also use the sync_to_gps example > which will balk if there isn’t a GPS. > > My recollection is that the PPS light will start blinking once the GPS has > acquired lock. Which can take 10s of minutes from a cold start. > > Sent from my iPhone > > > On Oct 14, 2021, at 2:33 PM, Achilleas Anastasopoulos <[email protected]> > wrote: > > > > > > I have some questions regarding the operation of X310. > > > > 1) How do I know if I have an internal GPSDO (we have 20 USRPs in the > Lab and I remember we bought some of them with GPSDO). I know that when I > do "uhd_usrp_probe", a device without GPSDO says "no internal GPSDO > detected" but in the absence of this message, should I assume there is one > inside? > > > > 2) Upon powering up the USRP and assuming I have an active antenna > connected in the back side (GPS antenna) input, should I expect that at > some point the GPS led (front panel) will start blinking? or do I have to > do something to initiate GPS acquisition? > > > > thanks > > Achilleas > > _______________________________________________ > > USRP-users mailing list -- [email protected] > > To unsubscribe send an email to [email protected] >
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