Revision as of 14:14, 27 August 2007 edit 71.197.93.248 (talk) →Reference: Changed link to the current version of IRIG time standard on RCC website. ← Previous edit		Revision as of 20:23, 30 August 2007 edit undo CuttlefishTech (talk \| contribs) 112 edits Fixed an incorrect statement at the bottom: IRIG-B does transmit year information, but not century information Next edit →
Line 44: For example, one of the most common formats, IRIG B122: IRIG B122 transmits one hundred pulses per second on an amplitude modulated 1 kHz sine wave carrier, encoding information in BCD. This means that 100 bits of information are transmitted every second. The time frame for the IRIG B standard is 1 second, meaning that one data frame of time information is transmitted every second. This data frame contains information about year (0-99), the day of the year (1-366), hours, minutes, and seconds. Information as to which ~~year~~century it is, is not transmitted. [[Leap second]] announcements are not provided. Although information is transmitted only once per second, a device can sychronize its time very accurately with the transmitting device by using a [[phase locked loop]]. Typical commercial devices will synchronize to within 1 microsecond using IRIG B timecodes. ==Reference== *[https://wsmrc2vger.wsmr.army.mil/rcc/manuals/200-04/TT-45.pdf IRIG standard 200-04 (PDF)]

IRIG timecode: Difference between revisions