> Hello, > > a question regarding the Allan Deviation of the Thunderbolt. > > the curve at > <http://www.leapsecond.com/pages/gpsdo/> > gives a deviation of 1.5e-12 at tau=1s > > whereas from the Trimble datasheet: > <http://trl.trimble.com/docushare/dsweb/Get/Document-10015/> > at tau=1s, the deviation is 9e-10 ... > > Is the data-sheet a worse-case scenario? > > Regards, > Patrick
All the Thunderbolts I've tested for the TAPR group buy have been in the 1 or 2 or 3 parts in 10^12th at tau 1 s. Very consistent. Right, the plot in the Trimble data sheet looks orders of magnitude worse. It is possible the Trimble measurement system that made the plot did not have sufficient resolution at low tau. But it is also possible that the model we got in the surplus deal is some kind of special high-end version of the model shown on the old data sheet. It's hard to know for sure. Somewhere in the FAQ I note you should ignore the plots in the Trimble data sheet. /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.
