[time-nuts] Gravity & Crystal Oscillator Calibration
brooke at pacific.net
Sat Sep 4 19:19:41 EDT 2004
A friend that does calibration and repair of electronic equipment recently gave a paper showing that when a certain model number of HP equipment has it's oscillator calibrated in the normal way by turning the equipment over on it's side, a noticeable error due to gravity is introduced.
He now does the calibration with the equipment extended out from a rack from underneath using an automotive creeper. So that gravity is the same for the calibration as for operation.
Brooke Clarke, N6GCE
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