Why a GPS Time Server is the Number One Choice For Time Synchronization

| Tuesday, January 10, 2012
By Lori Lang


When it comes to synchronizing a computer network there are several choices to ensure each device is running the same time. NTP (Network Time Protocol) is the preferred choice of time synchronization protocols but there are a multitude of methods in how NTP receives the time.

When you get home or back to work you can download your data to a computer. The software provided will allow to analyse in detail all of your data. Use interactive graphs and charts, overlay your route with Google Earth, check your progress against other runs you have done. You can even exchange data with other runners directly from your watch if you wish!

UTC time is the preferred time source used by computer networks as it is kept true by atomic clocks. UTC, as the name suggests, is also universal and is used by computer networks all over the world as a source to synchronize too.

Garmin Forerunner 305 (with heart rate monitor) A well priced, very popular watch by Garmin, who are pretty much top of their tree when it comes to satellite navigation and GPS. All the benefits of a good quality GPS running watch with software for computer downloading and analysis. The watch itself detaches from the strap and sits into a USB cradle for connectivity.

Dedicated NTP time servers are a better solution as they receive the time from an external source. There are really two types of NTP server, the radio reference time server and the GPS time server.

The Timex Ironman Global Trainer This watch looks more like a conventional digital watch. With the GPS technology incorporated within the watch itself it still manages to look slim and sleek. It can be worn as an everyday watch and not look out of place. Again, this watch is equipped with the usual running watch features along with the software included for detailed analysis and the charting of your progress.

GPS time servers on the other hand receive the time directly from GPS satellites. This GPS time is easily converted to UTC by NTP (GPS time is UTC - 17 seconds exactly as no leap seconds have been added.) As the GPS signal is available everywhere on the earth 24 hours a day, 365 days a week, there is never a risk of a loss of signal. A single dedicated GPS time server can synchronize a computer network of hundreds, and even thousands of machines to within a few of milliseconds of UTC time.




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