I'm hoping some of the list are familiar with the newer currently-available oscillators available from the distributors.
Some background: I'm starting to play with a short-term 1PPS holdover application, mainly to cover up brief GPS signal loss events (a few minutes at most). Since I may at some point want to make numerous copies of this, I'd rather start with a new oscillator as opposed to digging through the junkbox or buying surplus. Lower cost (<$100 ideal, lower is even better) and power consumption is good. My short-term stability requirements indicate to me that I'm probably looking for an OCXO instead of a TCXO, although it looks like some of the best TCXO's out there are in the range which will work in most cases (50ppb over temperature (or better)). I suspect I'm going to handle the holdover in a FPGA. As such, I don't think I'm going to bother trying to voltage control the oscillator. Seems like it will make the overall circuit simpler and I don't have to worry about a whole bunch of control circuit temperature compensation. I've dug through enough datasheets at this point, my eyes are glazing over. I also know that the spec sheets are only part of the story when it comes to oscillators. I also have found over the years that often the part I'm looking for (that 20ppb Temperature-stable TCXO for a reasonable price) exists if you know the vendor to look at... So any specific recommendations or pointers toward a brand/type would be appreciated. -- - Forrest _______________________________________________ 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.
