Supported Time Synchronization Sources - Siemens RUGGEDCOM RS416P Installation Manual

Chapter 1
Introduction
NOTE
The PTP module can only be installed in slot 5. For more information, refer to
Communication
Figure 2: PTP Module
1. TTL OUT Port 2. TTL IN Port
For more information about the BNC ports, refer to
The following sections describe the PTP support in more detail:
• Section 1.3.1, "Supported Time Synchronization Sources"
• Section 1.3.2, "TTL Outputs"
• Section 1.3.3, "IEEE 1588 Support"
Section 1.3.1

Supported Time Synchronization Sources

The following time synchronization sources are supported by the RS416P, with or without the PTP card:
Synchronization Source
NTP
IEEE 1588 v2
IRIG-B PWM
NTP
NTP (Network Time Protocol) is the standard for synchronizing the clocks of computer systems throughout the
Internet and is suitable for systems that require accuracies in the order of 1 ms.
IRIG-B PWM
IRIG-B time synchronization is an even older, established, inter-device time synchronization mechanism providing
accuracy in sub-milliseconds.
IEEE 1588
IEEE 1588 is designed to provide networked, packet-based time synchronization between different networking
nodes (PTP devices). The RS416P supports PTP v2, which is defined in the IEEE 1588-2008 standard. IEEE
1588 is designed to fill a niche not well served by either of the two older, dominant protocols, NTP and IRIG-B.
IEEE 1588 is also designed for applications that cannot bear the cost of a GPS receiver at each node or for which
GPS signals are inaccessible.
4
Ports.
1
Without PTP Card
2
Section 3.4, "BNC Ports".
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RUGGEDCOM RS416P
Installation Guide
Chapter 3,
With PTP Card
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Supported Time Synchronization Sources