Richard (Rick) Karlquist said: > A crystal might appear not to jump for while, but if observed long enough you > would always see a jump sooner or later. It wasn't like you could sort them > for "non-jumping" units. What sort of time scale is there for "long enough"? Is it something like earthquakes where smaller ones happen more often? -- These are my opinions. I hate spam.

Hi Long enough could be a couple hours. Come back to the same part after a while (months … years) and you might wait weeks. Look for many years on just about any OCXO and you probably will see something. Look for 1x10^-11 burps down in the noise and you will see lots of things that *might* be a step. Look for stuff over 2 ppb on a modern SC based part and you will wait a *very* long time. Do the steps get smaller on a given OCXO? they don’t seem to …. are they always the same size? Nope. If that’s confusing, you got it right. This is *not* a highly organized / easily predicted sort of effect. Bob > On Sep 4, 2022, at 11:44 AM, Hal Murray via time-nuts <time-nuts@lists.febo.com> wrote: > > > Richard (Rick) Karlquist said: >> A crystal might appear not to jump for while, but if observed long enough you >> would always see a jump sooner or later. It wasn't like you could sort them >> for "non-jumping" units. > > What sort of time scale is there for "long enough"? > > Is it something like earthquakes where smaller ones happen more often? > > -- > These are my opinions. I hate spam. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com