> the FTS specs for their FTS1000A, FTS1200, FTS1002A and FTS1003A name > short term stabilities for all four oscillators to be 1E-12 @ 1,10,100 > s. I have always believed that these specs are kind of "conservative" > ones so that your FTS1200 #2 fits them VERY well while FTS1200 #1 barely > meets the specs. > > Is there any idea on why these two oscillators behave that different? > > Best regards > Ulrich Bangert
Ulrich, I've seen this same thing for other high-end oscillators. It might boil down to the random quality of the individual quartz resonator. See for example, these dozen "identical" 10811 oscillators: http://www.leapsecond.com/pages/z3801a-osc/ This is one reason why some of us keep buying old oscillators; once in a while you run across a real gem, better than all the others before it. Some old Sulzers and some 10811 are really amazing; the same is true for many FTS 1000/1200 series. Hunting surplus stores and eBay for 1e-13 quartz is like this: http://www.old-picture.com/american-adventure/pictures/panning-Miner.jpg /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.
