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TDS-2
User Manual
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Endace TDS-2, TDS-6 User Manual

TDS-2 Module TDS-6 Unit User Manual
2.5.5r1
EDM05.05-01r1
Endace Measurement Systems® Ltd
http://www.endace.com
Leading Network Intelligence
Copyright © 2005.
Published by:
Endace Measurement Systems® Ltd Building 7 17 Lambie Drive PO Box 76802 Manukau City 1702 New Zealand Phone: +64 9 262 7260 Fax: +64 9 262 7261
support@endace.com www.endace.com
International Locations
New Zealand Americas Europe, Middle East & Africa
Endace Technology® Ltd Level 9 85 Alexandra Street PO Box 19246 Hamilton 2001 New Zealand Phone: +64 7 839 0540 Fax: +64 7 839 0543
support@endace.com www.endace.com
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Prepared in Hamilton, New Zealand.
Endace USA® Ltd Suite 220 11495 Sunset Hill Road Reston Virginia 20190 United States of America Phone: ++1 703 382 0155 Fax: ++1 703 382 0155
support@endace.com www.endace.com
Endace Europe® Ltd Sheraton House Castle Park Cambridge CB3 0AX United Kingdom Phone: ++44 1223 370 176 Fax: ++44 1223 370 040
support@endace.com www.endace.com
Copyright© All rights reserved
Version 2. 22 September 2005.
Endace Measurement Systems® Ltd
http://www.endace.com
USE THIS SPACE FOR NOTES
Copyright© All rights reserved
Version 2. 22 September 2005.
Endace Measurement Systems® Ltd
http://www.endace.com
Table of Contents
1.0 OVERVIEW.......................................................................................................................1
1.1 User Manual Purpose......................................................................................................1
1.2 Time Distribution Server System....................................................................................1
2.0 INSTALLING TDS-2 TIME DISTRIBUTION SERVER MODULE..........................3
2.1 TDS-2 Time Distribution Server Module Overview ......................................................3
2.1.1 TDS-2 Time Distribution Server Module Architecture............................................3
2.1.2 TDS-2 Time Distribution Server Module System Requirements.............................5
2.1.3 TDS-2 Time Distribution Server Module Accessories.............................................6
2.2 TDS-2 Time Distribution Server Module Connection to Power Sources.......................6
2.2.1 Connect TDS-2 Module to Electrical Mains Power Source.....................................7
2.2.2 Connect TDS-2 Module to 12V DC Power Source..................................................7
2.3 Connect TDS-2 Module to Code Division Multiple Access Source...............................7
2.4 Connect TDS-2 Module to Global Positioning System Time Signal Source .................8
2.5 Connection to TDS-2 Time Distribution Server Module Applications..........................9
2.5.1 DAG Card Signals Output Connection.....................................................................9
2.5.2 PC Connection to TDS-2 Time Distribution Server Module..................................10
3.0 CONNECTING TDS-6 TIME DISTRIBUTION SERVER EXTENSION UNIT.....11
3.1 Install TDS-6 Time Distribution Server Extension Unit...............................................12
3.2 Connect Additional TDS-6 Time Distribution Server Extension Units........................13
APPENDIX A – TDS-2 MODULE, CONNECTOR SPECIFICATIONS........................15
RS422 RJ45 Timing DB2J to DB9 Signal Output..............................................................15
RS232 DB9 CDMA Input...................................................................................................16
RS422 DB9 GPS Input........................................................................................................16
RS232 Host PC Connection................................................................................................16
RS422 Chain Output...........................................................................................................17
DB25 to DB9 GPS Adapter Plug........................................................................................17
APPENDIX B – TDS-6 EXTENSION UNIT, CONNECTOR SPECIFICATIONS .......18
RS422 RJ45 Timing Signal Output.....................................................................................18
RS422 Chain Connection....................................................................................................19
Copyright© All rights reserved
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Version 2. 22 September 2005.
Endace Measurement Systems® Ltd
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USE THIS SPACE FOR NOTES
Copyright© All rights reserved
ii
Version 2. 22 September 2005.
Endace Measurement Systems® Ltd
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1.0 OVERVIEW

Introduction
The Endace time distribution servers provide accurate synchronized timing signals to DAG cards for packet timestamping through use of global positioning system time signals.
The process involves a global positioning system [GPS] or code division multiple access system [CDMA], time distribution server components, and DAG cards.
In this chapter
This chapter covers the following sections of information.
• User Manual Purpose
• Time Distribution Server System

1.1 User Manual Purpose

Description
The purpose of this TDS 2 installation manual is to identify and explain:
• Installing TDS-2 Time Distribution Server Module
• Connecting TDS-6 Time Distribution Server Extension Unit
• Appendix A – TDS-2 Module, Connector Specifications
• Appendix B – TDS-6 Extension Unit, Connector Specifications

1.2 Time Distribution Server System

Description
The time distribution server system involves TDS-2 Time Distribution Server modules [TDS-2 module] receiving time signals either directly from a GPS receiver or a CDMA time receiver.
Accurate time synchronization information constantly transmitted by GPS satellites orbiting Earth is collated on the ground by GPS receivers. Receiver units can be mounted on building exteriors or elsewhere with an unobstructed sky view. A GPS receiver unit is connected to a TDS-2 module by fitting a DB25 cable to a DB25-toDB9 adapter on the module.
In many situations it is not possible or economic to run cable to a GPS receiving unit mounted externally on buildings. In this case, a CDMA cellular telephone network is used, where available. A CDMA system base station has a GPS receiver to collate the accurate timing transmitted by satellites.
Timing information is retransmitted from CDMA base stations to all CDMA receivers. Being of a lower frequency these transmissions can often be received within buildings without an external antenna.
Continued on next page
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Endace Measurement Systems® Ltd
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1.2 Time Distribution Server System, continued
Description, continued
Figure
Time Distribution Server TDS-2 modules and TDS 6 units are connected by cable to a DAG card timing connector. The precise time reference signals are fed from receivers to TDS-2 Time Distribution Servers, which relay them to DAG cards, PC’s or TDS 6 expander units.
The capacity of a TDS-2 module can be expanded six outputs at a time by chaining up to four TDS 6 expansion units without compromising timing accuracy.
The power source for TDS-2 modules is 12V DC through an adapter connected to an electrical mains source, or directly from a 12V DC source.
Diagram 1-1 shows the typical time server distribution system.
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Figure 1-1. Typical Time Server Distribution System.
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Endace Measurement Systems® Ltd
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2.0 INSTALLING TDS-2 TIME DISTRIBUTION SERVER MODULE

Introduction
Installation of the TDS-2 module involves connecting to an AC mains power source or 12V DC source and then connecting to a suitable timing single source. A 2.5mm plug fits to a 12V DC power source jack marked on the TDS-2 module rear panel.
In this chapter
This chapter covers the following sections of information.
• TDS-2 Time Distribution Server Module Overview
• TDS-2 Time Distribution Server Module Connection to Power
Sources
• Connect TDS-2 Module to Code Division Multiple Access Source
• Connect TDS-2 Module to Global Positioning System Time Signal
Source
• Connection to TDS-2 Time Distribution Server Module
Applications

2.1 TDS-2 Time Distribution Server Module Overview

Description
In this section
The TDS-2 Time Distribution Server module has a distinct architecture relative to its purpose with specific system requirements. The module also has accessories available that expand its function.
This section covers the following topics of information.
• Connect TDS-2 Module to Electrical Mains Power Source
• Connect TDS-2 Module to 12V DC Power Source
• TDS-2 Time Distribution Server Module Accessories

2.1.1 TDS-2 Time Distribution Server Module Architecture

Description
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The TDS-2 module is fitted with cable ports and connectors to receive precise time signal inputs, replicate them, and distribute directly to one or two DAG cards. The TDS-2 architecture features include:
• GPS input from Trimble Acutime 2000 GPS time receiver, Type
RS422.
• CDMA input from Endrun Technologies Praecis Ct CDMA time
receiver, Type RS232.
• Connection to a PC to monitor timing information and provide
network time services via NTP.
• Two outputs enabling connection of up to two DAG cards.
• Chain Out - enables daisy-chaining of TDS-6 modules through
connection to a single external time reference.
• Status LED indicators
• Accepts 12V DC power from an external source.
• Supplies DC power to GPS receiver.
Continued on next page
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