IRIG timecode: Difference between revisions

Revision as of 02:53, 19 December 2006

Revision as of 14:55, 6 March 2007

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'''Inter-range instrumentation group time codes''', commonly known as "IRIG" timecodes, were created by the TeleCommunications Working Group of the [[IRIG|Inter-Range Instrumentation Group]], the standards body of the [[Range Commanders Council]]. Work on these standards started in October [[1956]], and the original standards were accepted in [[1960]].

The original formats were described in IRIG Document 104-60, later revised and reissued in August [[1970]] as IRIG Document 104-70, upgraded later that year as the IRIG Document to the status of a Standard, IRIG Standard 200-70. The latest version of the Standard is IRIG Standard 200-9598.

The different timecodes defined in the Standard have alphabetic designations. A, B, D, E, G, and H are the standards currently defined by 200-9598. C was in the original specification, but was replaced by H. The main difference between codes is their rate, which varies between one pulse per second and 10,000 pulses per second.

* A: 1000 PPS

* B: 100 PPS