Hi The oscillators were tested and sorted at the end of the manufacturing line. Everything got checked for aging. It’s not clear that everything got detail tested for ADEV. The suspicion is that they did enough ADEV to get the few tight(er) spec units they needed.
Next layer is that these tests were done a *long* time ago. The characteristics of OCXO’s do change with time. What was once a tight spec unit may not be so today. What was once a bit noisy may be quieter now. I would not worry a lot about the different dash numbers on decades old 10811’s. Bob > On Mar 6, 2018, at 11:57 PM, Perry Sandeen via time-nuts <firstname.lastname@example.org> > wrote: > > List, > In getting documentation together for my HP 107BR I discovered the manuals I > was able to aquire were for prefix 333. > My unit prefix is 708. Does anyone have that prefix schematics or an errata > sheet? Or does the 708 prefix just designate another factory run? > TIA > Perrier > _______________________________________________ > time-nuts mailing list -- email@example.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- firstname.lastname@example.org To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.