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IRIG Serial Time Code Formats
Range Commanders Council White Sands Missile Range United States
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Standardization of time codes is necessary to ensure system compatibility among the various ranges, ground tracking networks, spacecraft and missile projects, data reduction facilities, and international cooperative projects. This standard defines the characteristics of six serial time codes presently used by the U.S. Government and private industry. Year information has been added to IRIG codes A, B, E, and G. It should be noted that this standard reflects the present state of the art in serial time code formatting and is not intended to constrain proposals for new serial time codes with greater resolution.This standard consists of a family of rate-scaled serial time codes with formats containing up to four coded expressions or words. All time codes contain control functions that are reserved for encoding various controls, identification, and other special-purpose functions.
APPROVED FOR PUBLIC RELEASE