Siemens RUGGEDCOM RS416, Installation Manual

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Chapter 1
Introduction
RUGGEDCOM RS416
Installation Guide
4 Precision Time Protocol (PTP) Support
Section 1.3
Precision Time Protocol (PTP) Support
The Precision Time Protocol (PTP) module adds the ability to provide time synchronization via Ethernet using the
Precision Time Protocol (PTP) and Network Time Protocol (NTP), and to synchronize with an external IRIG-B source.
The PTP module features BNC ports for TTL IN and TTL OUT. It also includes an LED to indicate when
synchronization has been achieved.
NOTE
The PTP module can only be installed in slot 5. For more information, refer to Chapter 3,
Communication Ports .
T
T
L
IN
T
T
L
O
U
T
1 2
Figure 2: PTP Module
1. TTL OUT Port 2. TTL IN Port
For more information about the BNC ports, refer to Section 3.4, “BNC Ports” .
CONTENTS
• 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 RS416, with or without the PTP card:
Synchronization Source Without PTP Card With PTP Card
NTP
ü ü
IEEE 1588 v2
ü ü
IRIG-B PWM
û ü
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.