[time-nuts] How To Measure Long Term Phase Stability Of An Oscillator

[W3KL]

How does one make a measurement of the phase stability of an oscillator over
a time period much larger than the oscillator period?  For example, I have
an oscillator with a frequency of 4 MHz and I want to measure the phase
drift of the RF between a given point in time and then a time 4 seconds
later.  I want to make a measurement that has a precision of 0.1 degree or
better.

 

Jeff