 Free Online Articles Directory |
|||||||
Home Page  Computers Networks Using Msf as a Timing Reference for Ntp Servers |
|||||||
 |
Using Msf as a Timing Reference for Ntp Servers Atomic clocks are incredibly expensive and generally they are normally only to be found in large scale physics laboratories such as MIT (Massachusetts Institute of Technology), NIST (National Institute of Standards and Technology (Colorado) or the National Physical Laboratory in the UK. Fortunately, many national laboratories broadcast the UTC (Coordinated Universal Time) time from their atomic clocks via a radio transmission. In the UK the national timing broadcast is called MSF and is broadcast by NPL (National Physical Laboratory) in Cumbria. The MSF broadcast is used by throughout the UK and parts of Europe to synchronise consumer electronic products like wall clocks, clock radios, and wristwatches. In addition, MSF is used for high-level applications such as network time synchronisation utilising NTP. The time code contains the year, day of year, hour, minute, second, and flags that indicate the status of Daylight Saving Time, leap years, and leap seconds. MSF operates on a frequency of 60 kHz and carries a time and date code that can be received and decoded by a wide range of readily available radio-controlled clocks and provides a received accuracy should be less than 10 milliseconds (1/100 of a second). While many NTP servers now use GPS to receive a timing reference, the advantage of using a radio transmission is that a signal can be received indoors (a GPS antenna needs a good view of the sky). However, the radio signal has a finite range and can be blocked by skyscrapers, mountains and dense conurbations. A radio based NTP server usually consists of a rack-mountable time server, and an antenna, consisting of a ferrite bar inside a plastic enclosure, which receives the radio time and frequency broadcast. The antenna should always be mounted horizontally at a right angle toward the transmission for optimum signal strength. Similar national timing transmissions are broadcast from other countries in the US the signal is referred to as WWVB and is broadcast by the NIST (National Institute for Standards and Technology) in Fort Collins, Colorado, other systems are broadcast in Frankfurt, Germany (DCF-77), Japan (JJY) and France (TDF).
Rate this Article:
Current: 0 / 5 stars - 0 vote(s).
Article Tags: Ntp Server, GPS Ntp Server, Ntp Time Server, Ntp Clock, GPS Time Server, Windows Server 2008, Windows Ntp Server, Gps Ntp Time Server, Network Time Server, Ntp Servers, Ntp Gps Time Server, Ntp Gps Server, Linux Time Server, Linux Ntp Article Source: http://www.articlesbase.com/networks-articles/using-msf-as-a-timing-reference-for-ntp-servers-484372.html About the Author:
Richard N Williams is a technical author and specialist in
Related ArticlesNetwork Time Server Faq How to Build and Configure Your Own Radio Referenced Ntp Time Server The Atomic Clock and the Ntp Time Server Accuracy in Timekeeping, Clocks and Their Development Basic Time Server Information Linux – Getting the Correct Time Common Time Server Questions Atomic Clock - Keeping the World Ticking Got a Question? Ask.Ask the community a question about this article:Q&A Powered by:
 Latest Networks ArticlesUtc – a Global Timescale Radio Referenced Time Servers Explained Setting an Effective Marketing Budget Industrial Computer Enclosure – Atex Protection in Explosive Atmospheres Common Time Server Questions Basic Time Server Information Learn About Network Switches and Hubs The Atomic Clock and the Ntp Time Server More from Richard n WilliamsUtc – a Global Timescale Radio Referenced Time Servers Explained Converting Ip Ratings and Nema Codes Industrial Computer Enclosure – Atex Protection in Explosive Atmospheres Common Time Server Questions Basic Time Server Information The Atomic Clock and the Ntp Time Server Network Time Server Faq |
|
|||||
|
Article Categories
|
|||||||
 Sign up for our email newsletterReceive updates, enter your email below
Use of this web site constitutes acceptance of the Terms Of Use and Privacy Policy | User published content is licensed under a Creative Commons License.
Copyright © 2005-2008 Free Articles by ArticlesBase.com, All rights reserved. (0.13, 17) |
|||||||
