The LTE-Lite User Manual (version 1.3) says: 2.3.7 1 PPS Module outputs The LTE-Lite SMT Module provides GPS raw 1 PPS CMOS pulse on pin 15 with sawtooth present, and a clean TCXO-generated, sawtooth-removed, UTC(GPS) phase-locked 1PPS output on pin 4.
It is the pin 4 output that connects to the 1PPS-OUT jack on the eval board. So it is supposed to be cleanly divided down from the TCXO. (But I don't think Jackson Labs has published any of the circuitry on the LTE-Lite module itself). - Dave On Mon, Mar 20, 2017 at 2:07 AM, Mark Sims <hol...@hotmail.com> wrote: > > It is also interesting that the LTE GPSDO 1PPS has such a wide range of > TIE. A Tbolt / Z38xx GPSDO typically has a TIE in the 1PPS signal of > around 1 nsec. The LTE TIE spans over 40 nanoseconds (not including the > spikes). It seems like the LTE 1PPS may be from the GPS and not derived > from dividing down the disciplined oscillator output. > _______________________________________________ > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
