Analysis of Delays in Transmitting Time Code Using an Automated Computer Time Distribution System

Y. Shari, H.A. Chua, A.M. Kyaw, J. Levine

Abstract: An automated computer time distribution system broadcasts standard tune to users using computers and modems via telephone lines. For users who need traceable time, it is of particular interest to know the uncertainty of time information received Factors that contribute to transmission delays in a telephone network have been measured and analyzed The results revealed several dominant factors that contributed to delays - software platform (50% of the delay), transmission speed of time-codes (25%), telephone network (15%), modem and others (10%). The standard deviation of delays is below 20 ms in all cases The results allow us to estimate that, within Singapore, an uncertainty of about 20 milliseconds is achievable using the system
Published in: Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting
December 7 - 9, 1999
Marriott's Laguna Cliffs Resort
Dana Point, California
Pages: 323 - 328
Cite this article: Shari, Y., Chua, H.A., Kyaw, A.M., Levine, J., "Analysis of Delays in Transmitting Time Code Using an Automated Computer Time Distribution System," Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting, Dana Point, California, December 1999, pp. 323-328.
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