Hi In this case it's very much a "you get what you pay for" sort of thing. You are indeed comparing an hourglass to a cesium standard.
Bob On Dec 7, 2012, at 2:20 AM, "Don Latham" <d...@montana.com> wrote: > Good thought, Bob. AD9548 $27, eval board a whopping $250, get a > thunderbolt :-). The eval board has a lot of SMA's on it... > Don L > Bob Camp >> Hi >> >> If all you want is a "something" locked to a GPS: >> >> Take the pps from the GPS and hook it to an AD9548. You probably will >> need a 50 cent CPU to set up the registers. No muss, no fuss, nothing >> to invent or design. >> >> Weather it does what you need to do is an entirely different question. >> Without a defined objective / need / performance goal this could go on >> for a couple hundred years….. >> >> Bob >> >> On Dec 6, 2012, at 7:43 PM, Chris Albertson <albertson.ch...@gmail.com> >> wrote: >> >>> What if the OCXO had a sine wave output and then you used the PPS >>> leading >>> edge to gate the sine wave to a sample and hold. then the sample is >>> measured by the Arduino's ADC? I think(?) you get a 10-bit ADC or is >>> it >>> 8-bits. The problem is the required speed of the sample and hold, >>> maybe >>> not easy to build >>> -- >>> >>> Chris Albertson >>> Redondo Beach, California >>> _______________________________________________ >>> 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. >> >> > > > -- > "Neither the voice of authority nor the weight of reason and argument > are as significant as experiment, for thence comes quiet to the mind." > De Erroribus Medicorum, R. Bacon, 13th century. > "If you don't know what it is, don't poke it." > Ghost in the Shell > > > Dr. Don Latham AJ7LL > Six Mile Systems LLP > 17850 Six Mile Road > POB 134 > Huson, MT, 59846 > VOX 406-626-4304 > www.lightningforensics.com > www.sixmilesystems.com > > > > _______________________________________________ > 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.