Forgot to mention, there are some nice LEDs on the LO Tx Outputs that will tell you if you have a given port enabled.
On Fri, Jan 14, 2022 at 9:25 AM Rob Kossler <rkoss...@nd.edu> wrote: > Hi Paul, > Based on the block diagram > <https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_rh_lo_sharing>, > I think I would set both LOs to use an external source. I would set the > Tx0 export the LO on Tx Output 0 and then route it directly back into Tx > Input 1 which then goes to a 1:2 splitter to feed both inputs. In addition > to exporting the LO and setting the LO source to external for both ports, > you also need to enable the Tx Output 0 (disabled by default). I've > forgotten the command to do so. > Rob > > > > On Fri, Jan 14, 2022 at 1:11 AM Paul Atreides <maud.dib1...@gmail.com> > wrote: > >> I am trying to configure the N321 to take some TX phase measurements >> between RF0 and RF1 >> I have updated the file system to the latest release using the KB >> guidance. >> >> My host/software side is: >> GNURadio 3.9.5 >> UHD 4.1.0.5 >> Ubuntu 20.04 >> >> My gr-uhd block has the LO settings: >> Channel 0 export = true >> Channel 0 LO = internal >> >> Channel 1 export = false >> Channel 1 LO = external >> >> On the hardware side am I understanding the LO diagram correctly that in >> order to achieve the highest phase accuracy between channels i need to >> share the LO between the transmit ports of RF0 and RF1? >> If so, would I do that by physically connecting the TX LO OUT0 (really >> 0-3) to TX LO IN1? >> >> Am I missing anything obvious for the settings and/or is there a more >> desirable way to do this? >> >> Thanks >> >> <end transmission> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> >
_______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
