SPECIFICATION OF PRECISION OSCILLATORS

Stanley S. Schodowski, John R. Vig

Abstract:	This paper reviews Revision B of the military specification for quartz crystal oscillators, MIL-0-55810B. The emphasis is on those aspects of MIL-0-55310B which are of greatest interest to the PTTI community, Le., on specifying high precision oscillatora. MIL-0-55310B has been in the making" since 1982. The five-year effort, which included repeated government-industry coordinations, has produced a completely overhauled document that is expected to be released early in 1988. The revised specification will supercede MIL-0-55310A, which was issued on 29 November 1976. The B-revision now permits the specification (and acquisition) of the more reliable and higher performance crystal oscillators required by modern military and space systems. Major modifications and improvements were made to the requirements specifying design and construction, performance and test, quality assurance, and qualification. Definitions were expanded and two new oscillator types, the microcomputer-compensated crystal oscillator (MCXO) and the rubidium-crystal oscillator (REXO), were added. An index has also been added to facilitate use of the specification. Revision B contains more than thirty new performance (and corresponding test) requirements. Many existing requirements have been revised. Aspects of the new and revised requirements that are most relevant to PTTI are discussed in this paper, A future revision that would include all precision frequency sources, i.e., both crystal and atomic sources, in proposed.
Published in:	Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting December 1 - 3, 1989 Sheraton Hotel Redondo Beach, California
Pages:	163 - 173
Cite this article:	Schodowski, Stanley S., Vig, John R., "SPECIFICATION OF PRECISION OSCILLATORS," Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, December 1987, pp. 163-173.
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