Custom Turnkey Time & Frequency Systems a Structured, Expandable Approach

David F. Wright

Abstract:	Radiocode Clocks Ltd. have developed a Turnkey Time and Frequency Generation and Distribution System strategy based upon a bus of three, "core" signals from which any Time code, Pulse rate or Frequency can be produced. The heart of the system is a ruggedized 19 inch, 311 Single Eurocard chassis constructed from machined 10mm aluminum alloy plate and designed to meet stringent Military, Security and Telecommunications specifications. The chassis is fitted with an advanced multilayer backplane with separate ground planes for analog and digital signals ensuring no degradation of low noise frequency references in the proximity of high speed digital pulse transmissions. The system has been designed to be used in three possible configurations: a) As a stand alone generation and distribution instrument. b) As a primary distribution unit in a turnkey Time and Frequency system. c) As a secondary distribution unit at a remote location from the turnkey Time and Frequency System providing regeneration of core signals and correction for transmission delays. When configured as a secondary distribution unit the system will continue to provide usable outputs when one, two or even all three of the "core" signals are lost. The instrument's placement within a system as a possible single point of system failure has required the development of very high reliability translator, synthesizer, phase locked loop and distribution modules together with a comprehensive alarm and monitoring strategy.
Published in:	Proceedings of the 26th Annual Precise Time and Time Interval Systems and Applications Meeting December 6 - 8, 1994 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	185 - 190
Cite this article:	Wright, David F., "Custom Turnkey Time & Frequency Systems a Structured, Expandable Approach," Proceedings of the 26th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, December 1994, pp. 185-190.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In