Note that many (maybe all) TCXOs exhibit a hysteresis effect when the temperature cycles. The stability reported on the datasheets is only tested with a temperature change in one direction. Cycling temperature up and down will result in more variation. I've seen two or three times the datasheet variation when cycling some TCXOs between 0 and 50 C and have had to super select for this. I've also seen non monotonic jumps. Aging is also very significant in the first few months after soldering.
Mark W7MLG _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
