IRIG timecode - Wikipedia
Inter-range instrumentation group timecodes, commonly known as IRIG timecode, 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 IRIG-B time protocol is widely used by electric utilities, industrials, and others to ensure precise time synchronization of power system devices, such as breakers, relays and meters. This document describes the protocol, gives examples of Cyber Sciences products that support IRIG-B, and describes how this legacy protocol is
Understanding IRIG-B Time Code - Masterclock
2016年12月21日 · What is IRIG-B Time Code? A Quick Introduction to IRIG-B Inter-Range Instrumentation Group, or IRIG, time codes have been around since the 1960s when they were first introduced as part of a U.S. Army standard.
IRIG-B. An Introduction. The Inter-Range Instrument Group time code (or IRIG for short), is a range of standard time code formats which are used to transfer timing information (time, date, quality, etc) from a GPS/ Atomic clock to connected slave devices.
The IRIG-B time protocol is widely used by electric utilities, industrials, and others to ensure precise time synchronization of power system devices, such as breakers, relays and meters. This document describes the protocol, gives examples of how IRIG-B is used by Cyber Sciences products, and provides references for further study.
2015年7月29日 · The Telecommunications and Timing Group of the Range Commanders Council has adopted a Modified Manchester modulation technique as an option for the IRIG serial time codes A, B, and G as an addition to the standard AM and level shift modulation now permitted.
Parallel and serial formatted time codes are used to efficiently interface the timing system output with the user system. Parallel time codes are defined in IRIG Standard 205-87, IRIG Standard Parallel Binary and Parallel Binary Coded Decimal Time Code Formats.
IRIG-B website
Inter Range Instrumentation Group mod B: Communication systems, data handling systems, tracking and telemetry systems require time-of-the day information for data correlation with time. Parallel and serial formatted time codes are used to efficiently interface the …
IRIG.ORG
What is IRIG-B? IRIG-B refers to a serial time code format. This a timing signal that has a rate of 100 pulse per second signal, There are other rate that are designated in accordance with the IRIG Standard 200-04 (see below).
The IRIG time codes are continuously transmitted in well-defined cycles. At one part of the cycle, a reference marker indicates the time being transmitted. IRIG time codes are referenced by a four-digit number (see the following figure). This paper focuses on IRIG-B, although other code formats are also discussed.