The acceleration sensitivity, , can be calculated from the vibration induced sidebands.  In an ideal oscillator,  vs. fv would be constant, but real oscillators exhibit resonances.  In the above example, the resonance at 424 Hz resulted in a 17-fold increase in .  The preferred test method includes measurement of  at multiple vibration frequencies in order to reveal resonances.
	MIL-PRF-55310 requires that “Measurements shall be made at least 5 equally spaced acceleration levels between 20 percent of the maximum and the maximum specified.”
	J. R. Vig, C. Audoin, L. S. Cutler, M. M. Driscoll, E. P. EerNisse, R. L. Filler, R. M. Garvey, W. L. Riley, R. C. Smythe, and R. D. Weglein, "Acceleration, Vibration and Shock Effects - IEEE Standards Project P1193," Proc. 1992 IEEE Frequency Control Symposium, 763-781, 1992; also, The Effects of Acceleration on Precision Frequency Sources, U. S. Army Laboratory Command Research and Development Technical Report SLCET-TR-91-3, March 1991, AD-A235470.
	The complete MIL-PRF-55310 is available on the Internet via a link from <http:\\www.ieee.org/uffc/fc>, or directly, from <http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-55310>
	Copies of MIL-PRF-55310 are also available by mail from:  Military Specifications and Standards, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, USA.  Customer Service telephone: (215) 697-2667/2179; Telephone Order Entry System (requires a touch tone telephone and a customer number) (215) 697-1187 thru 1195.