> Sure! I had better formulated my question like: A constructor of a > GPSDO knows, that any OCXO that has been sitting around for years is > likely to undergo rapid aging when it is first brouht up. When > Symmetricon choosed to switch to a long time constant early after > power up, were they perhaps expecting a lower OCXO drift than I am > observing now?
Does anybody have any data on the startup transients for a good crystal that's been off for a year compared to one that's been off for a week or a day? My guess is that the designers ignored the off-for-a-long-time problem. It's too hard to test and doesn't happen often enough to be important. Do people who run lots of GPSDOs (telcos) store their spares powered up in order to avoid this problem? If I have 2 units, primary and secondary, and the primary dies, will the pick-one software stick with old unit for a while after the dead one is replaced even though the "primary" is now working? -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
