Editing Clock synchronization (section)

===Inter-range Instrumentation Group time codes===
[[IRIG timecode]]s are standard formats for transferring timing information. Atomic frequency standards and GPS receivers designed for precision timing are often equipped with an IRIG output. The standards were created by the Telecommunications Working Group of the United States military's [[Inter-Range Instrumentation Group]] (IRIG), the standards body of the Range Commanders Council. Work on these standards started in October 1956, and the original standards were accepted in 1960.<ref>{{cite web |url=http://literature.rockwellautomation.com/idc/groups/literature/documents/wp/enet-wp030_-en-e.pdf |title=Choosing the correct Time Synchronization Protocol and incorporating the 1756-TIME module into your Application |publisher=Rockwell Automation |author=Josh Matson |access-date=2019-08-13 |date=May 2013}}</ref>