Hi Tom, Thanks - the data is rather useful. Do you perhaps know what the high freq phase noise looks like? I'd like to lock the GPS LO to the output of my GPSDO. However, the integrated jitter will probably determine if it could be done, by something as simple as filtering the output of a fractional N (implemented inside a FPGA) or maybe a dedicated fractional N IC with low-noise VCO (such as those from Analog Devices). I guess the latter is more realistic.
I'd guess the stock TCXO onboard the M12+T would have a noise floor below say -140dBc/Hz. Regards, Stephan. 2009/1/2 Tom Van Baak <[email protected]> > > Hi All, > > > > Has anyone been able to figure out the part number and/or measured the > > phase noise of the quartz oscillator on board the Motorola M12+T? > > > > This will be an interesting figure to see. > > > > Regards, > > > > Stephan. > > This is an ADEV+MDEV plot for the 100 Hz output of an > M12+ in free-run mode (no gps lock). > > http://www.leapsecond.com/pages/m12-adev/m12-free.gif > > If you want more data let me know. > > /tvb > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
