I've seen several spec sheets on high end GPSDO's that seem to have performance approaching a low-noise cesium standard, but only cost $3-6$K new. One is the SRS FS740 which appears to combine a GPSDO with the interpolator of the SR620 counter. This gets down below 10(-13) in one day and drops below 10(-14) for longer times. The other is the EndRun Technology Meridian II, which has been tested at NIST, as shown in https://www.endruntechnologies.com/pdf/NISTReport-EndRun-MeridianII-US-Rb.pdf . This shows a TDEV <2 ns (according to NIST) and and ADEV that gets into the 10(-15)'s for times longer than 1 day. Has anyone had any experience with these?
Ralph DeVoe _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
