HI The parts would have been set to the offset marked on the can. In the case of the one in the picture that would have been dead on frequency. The offset is used to center up the frequency vs temperature curve. Since they are a TCXO, that curve may be as high as a 6th or 8th order curve. There was no practical way to get it to go through zero at 25C. If the offsets spread over +/- 7 Hz at 10 MHz, it’s a pretty good bet that you have 1 ppm TCXO’s.
Bob > On Mar 20, 2016, at 1:42 AM, Joseph Gray <jg...@zianet.com> wrote: > > I got my hands on some of these. > > https://dl.dropboxusercontent.com/u/19599147/TCXO%20Top.jpg > > https://dl.dropboxusercontent.com/u/19599147/TCXO%20Bottom.jpg > > A search finds other Microsonics units, but not this one. I can't find > any information on what voltage to feed this. Does anyone know? > > I know that these aren't Time Nuts grade, but I am curious to see how > good/bad they are. They look to be NOS from 1979. > > Some of the other samples are marked as being set to anywhere from 1 > Hz to 7 Hz high or low. Why would they have been factory adjusted high > or low? > > > Joe Gray > W5JG > _______________________________________________ > 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. _______________________________________________ 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.
