GPS or Radio Timing?

GPS and radio are the two most common time references used for network synchronization. Both have advantages and disadvantages. Radio time references can often be received indoors, but can be prone to interference. Also metal structures can cause problems. If you happen to be located in a valley or near hills, radio reception can prove […]

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NTP Server Manual Time Adjustments

Many NTP servers, including TimeTools SR series will only synchronize to an external time reference, such as GPS, if its system time is close to the supplied reference time. If there’s too great a difference between the devices system time and the reference clock time, the reference clock time stamps will be rejected. TimeTools SR […]

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Why use GPS for Accurate Time

There are a number of sources of accurate time available – GPS, Radio, CDMA. They all have their own advantages and disadvantages. The most popular has to be GPS for a number of reasons. GPS is much more accurate than other time references. It can provide synchronisation down to nanosecond level. It is also a global […]

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How To Choose a NTP Server

Choosing a NTP server for your organisation can be bewildering. The list of features and options can seem overwhelming. However, by reviewing your organisations requirements, the choice can be made quite simple. Most appliances can be divided into basic groups: NTP or SNTP, enclosure type, single or multi-port LAN, accuracy and throughput, reference clock type, […]

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The History of Measuring Time

For thousands of years, people have endeavored to find more accurate ways of measuring time. Centuries ago, humans constructed monuments like Stonehenge, which is widely accepted as being used to mark the beginning of seasons. Such information was vitally important, knowing when to sow seeds for next seasons crop could mean the difference between life […]

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Accurate Time For Your Computer

Computers maintain time even when powered off by using a battery backed real-time clock. The clock chip uses a quartz crystal as a time reference in exactly the same way as your watch keeps time. However, with the highly competitive mass-production of PC’s, component costs have tumbled. This has resulted in low-cost, sometimes inferior components […]

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Reasons To Consider Installing a NTP Time Server

The synchronization of time of computers and servers on a network is often an issue which is given very little thought. However, with modern computer systems becoming more distributed, it is an important aspect of system design. Many computer applications, such as data-logging, transaction processing, control and monitoring all rely on individual computers having an […]

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