Update on the NPLTime® Service and Future Developments with White Rabbit

Elizabeth Laier English, Peter Whibberley, Conway Langham, David Hicks, Leon Lobo

Abstract:	This paper describes the recent advances in the development of the NPLTime® service. The existing fibre infrastructure has been expanded to cover new UK locations for improved connectivity over dark fibre links. In its present configuration, the NPLTime® service is capable of delivering better than 1 µs synchronization to UTC(NPL) at a customer site. Data obtained from the current configuration is analyzed here. Timeserver equipment for possible future NPLTime® upgrades are currently being tested in the lab, and results will be presented. Also included are initial tests using White Rabbit, a technique that can give ns-level stability time transfer over fibre.
Published in:	Proceedings of the 48th Annual Precise Time and Time Interval Systems and Applications Meeting January 30 - 2, 2017 Hyatt Regency Monterey Monterey, California
Pages:	80 - 87
Cite this article:	English, Elizabeth Laier, Whibberley, Peter, Langham, Conway, Hicks, David, Lobo, Leon, "Update on the NPLTime® Service and Future Developments with White Rabbit," Proceedings of the 48th Annual Precise Time and Time Interval Systems and Applications Meeting, Monterey, California, January 2017, pp. 80-87. https://doi.org/10.33012/2017.15012
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