Atomic Clocks Make a Quantum Leap in Accuracy

Re:Atomic Clocks Make a Quantum Leap in Accuracy by madengr on Tuesday January 28, 2014 @05:15PM (#7140170)

The phase noise (really short term stability) of a rubidium oscillator is rather poor compared to on ovenized quartz oscillator. So what I really want is a strontium disciplined OCXO.

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Re:Atomic Clocks Make a Quantum Leap in Accuracy by mjb on Tuesday January 28, 2014 @07:31PM (#7140906)

Years ago I was involved in some work on clocks that needed very high performance at low cost. We ended up with OCXOs GPS-disciplined over some of their frequency and atomic clock disciplined (cesium, IIRC) over another part of the range.

Telling the time is hard.

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Re:Atomic Clocks Make a Quantum Leap in Accuracy by madengr on Tuesday January 28, 2014 @08:00PM (#7141041)

Cool. I bought a couple of HP Z3801A recently for home lab use. Also have an Arbiter GPS disciplined clock at work as a frequency standard for my RF equipment; they use one of the Wenzel OCXOs that has the lowest phase noise you can buy.

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