 For those industrial automation, military and aerospace applications that can benefit from the cost savings and time accuracy of IEEE 1588, Symmetricom offers the XLi IEEE 1588 Grandmaster, the ultra-precise master clock for an IEEE 1588 synchronized network.
The Symmetricom Grandmaster is IEEE 1588-2002 compliant. It time stamps PTP packets with a time stamp accuracy of 30 RMS nanoseconds to UTC. (The XLi GPS synchronized clock is accurate to 30 nanoseconds RMS to UTC while tracking GPS satellites). Measured synchronization accuracy at a PTP client has been shown to be as good as a 17 nanoseconds offset from the XLi Grandmaster.
The XLi Grandmaster contains a dedicated high-speed 1588 time stamp processor. Operating at 100Base-T line speed with deep time stamp packet buffers, the XLi Grandmaster can support thousands of 1588 clients. This is made possible in part by sending 1588 Sync & Follow_Up messages periodically using multicast addressing, and in part by being able to quickly and accurately process 1588 client initiated unicast Delay_Req and Delay_Resp messages.
As an increasing number of applications integrate Ethernet and the benefits of speed, flexibility and connectivity are exploited, IEEE 1588 is expected to be adopted as an enabling technology across numerous applications because it will change the way problems are solved. As performance requirements become more stringent, demand for more precise timing and synchronization via Ethernet is also expected to increase.
Boeing will deploy the XLi IEEE 1588 Grandmaster clock in a new network based test data system.
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