DISCIPLINED RANGE TIME CODE TRANSLATORS WITH SUB-MICROSECOND ACCURACY

Shelby Bass, Roger Olson, Jack McNabb

Abstract:	Serial Time Code signals have long been used to transfer time over various communication channels and media over both short and long distances. Generally, the accuracy of this method of time transfer has been thought of in terms resolution of the code modulation – for instance, 1 second for IRIG-B, 0.1 seconds for IRIG-A, etc. However, in most Time Codes, the carrier frequency is coherent with the modulation and thus provides the means for much greater resolution and accuracy. In the case of the IRIG-B code, with its 1 kHz carrier, time resolution of better than one thousandth of a carrier cycle is now possible, leading the way to sub-microsecond time transfer accuracy. Newly developed precision Time Code Translators with this capability are now being used to improve the accuracy of time transfer throughout several large Missile Test Range timing networks.
Published in:	Proceedings of the 20th Annual Precise Time and Time Interval Systems and Applications Meeting November 29 - 1, 1988 Sheraton Premiere Hotel Vienna, Virginia
Pages:	175 - 182
Cite this article:	Bass, Shelby, Olson, Roger, McNabb, Jack, "DISCIPLINED RANGE TIME CODE TRANSLATORS WITH SUB-MICROSECOND ACCURACY," Proceedings of the 20th Annual Precise Time and Time Interval Systems and Applications Meeting, Vienna, Virginia, November 1988, pp. 175-182.
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