I mentioned in another post that I picked up a couple of militarized FTS-4100 "fly-away" Cs units. These have an option installed that adds an accelerometer to the OCXO; it's supposed to reduce G sensitivity by at least an order of magnitude.
John ---- [email protected] wrote: > Hi Magnus, > > all depends - in an aircraft you have 6g+ turn-overs :) > > We make a version of our FireFly-II GPSDO with ultra-low-g sensitivity and > ruggedization, that one you can run in a back-pack while doing skating-tricks > on a ramp and you won't see much change in frequency. A bit more pricey on > that OCXO of course. > > Most "standard" oscillators will have about 1-2ppb change after a turn-over. > I have seen some that actually change the Crystal temperature when turned > over, so you can see the initial frequency change due to gravity, then you > see > the operating current change, and the frequency slowly drift away as the > temperature of the crystal is changed. Bad. Very bad. > > bye, > Said > > > In a message dated 1/8/2009 09:29:41 Pacific Standard Time, > [email protected] writes: > > Magnus Danielson wrote: > . . . >> Most labs would have issues with a 2g turnover. :) >> >> Flipping oscillators that runs is evil and should be avoided at all >> times. Should be in the rulebook for time-nuts. >> >> Cheers, >> Magnus > > > > _______________________________________________ > 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.
