I have N2x0 radios and I have installed the GPSDO in several of them. Sometimes I want use the external reference and sometimes I want to use the GPS reference. Do I have to open them up and move the jumper when I want to switch or does it still honor the software command? There are also times when I want the 1 PPS to come from the GPSDO and the 10 MHz to come from an external source. Is this doable? Also, I think I may want to take the GPSDO 10 MHz out and feed it into a distribution amp for multiple devices. One of the outputs of the distribution amp comes back into the radio as an external reference. So, does the GPSDO keep running even when I have the reference set to external? Thanks, Frank

On 10/15/2013 11:01 AM, Wallace, Frank L CIV NSWCDD, Q41 wrote: > I have N2x0 radios and I have installed the GPSDO in several of them. > > Sometimes I want use the external reference and sometimes I want to use the GPS reference. Do I have to open them up and move the jumper when I want to switch or does it still honor the software command? You'll have to move the jumper. > There are also times when I want the 1 PPS to come from the GPSDO and the 10 MHz to come from an external source. Is this doable? These are independently selectable, yes. > Also, I think I may want to take the GPSDO 10 MHz out and feed it into a distribution amp for multiple devices. One of the outputs of the distribution amp comes back into the radio as an external reference. So, does the GPSDO keep running even when I have the reference set to external? > I believe all it needs is the power supply, the GPSDO is largely independent, but "in skin". > Thanks, > Frank > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org