Are you inputting an LO signal at twice the desired frequency and at +3dBm?
Have you tried adding init_cals=BASIC to your device ages? Sent from my iPhone > On Nov 19, 2020, at 2:26 PM, Christopher Flood via USRP-users > <usrp-users@lists.ettus.com> wrote: > > > Hi all, > > I've seen some discussion about this on the email lists, but I'm still having > a bit of trouble. I'm trying to use the LO IN RX ports on the front of the > N310 to synchronize the oscillators on the two daughterboards. I was thinking > I could generate a signal on one of the TX/RX ports of the SDR and feed that > into the LO IN RX ports at the appropriate frequency and power. However, when > I test this setup in GNU Radio Companion I don't get any meaningful data, so > I must be doing something wrong. > > The input signal that I want to sample is a 10MHz signal that is going into > an RX2 port on the front end of the SDR. When I set the device argument > "rx_lo_source=internal" and run it, the data I get looks exactly how I would > expect. When I change the device argument to "rx_lo_source=external" and run > it, I don't get anything that makes sense. > > Am I using the LO IN RX ports correctly? The documentation doesn't say much > besides power and frequency ranges. > > Any help or advice would be much appreciated. > > -Chris > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
