Endace TDS-2 Manuale utente

EDM05.05-01r1

TDS-2 Module TDS-6 Unit User Manual

2.5.5r1

Endace Measurement Systems®Ltd

http://www.endace.com EDM05.05-01r1 TDS-2 Module TDS-6 Unit User Manual

Leading Network Intelligence

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Endace Measurement Systems®Ltd

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17 Lambie Drive

PO Box 76802

Manukau City 1702

New Zealand

Phone: +64 9 262 7260

Fax: +64 9 262 7261

[email protected]

www.endace.com

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Fax: +64 7 839 0543

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www.endace.com

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Virginia 20190

United States of America

Phone: ++1 703 382 0155

Fax: ++1 703 382 0155

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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.

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USE THIS SPACE FOR NOTES

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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

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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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1.2 Time Distribution Server System, continued

Description, continued

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.

Figure Diagram 1-1 shows the typical time server distribution system.

Figure 1-1. Typical Time Server Distribution System.

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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 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.

In this section 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 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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2.1.1 TDS-2 Time Distribution Server Module Architecture, continued

CAUTION The standard Ethernet cables and patch equipment do not carry Ethernet

signals and must never be connected to Ethernet equipment such as hubs,

routers, or NICs.

TDS-2 module

face-plate The TDS-2 module face-plate is fitted with:

•Signal source selector switch

•CDMA signal input connector

•GPS signal input connector

•LED’s for power source, PPS and SERIAL signal status

•Timing signal outlet ports

Figure Figure 2-1 shows the TDS-2 module face-plate architecture.

Figure 2-1. TDS-2 Module Face-plate Architecture.

The timing signal outputs are provided through RJ45 connectors, and may

be connected to DAG cards with standard Ethernet cables and patch

equipment.

When DC power is provided to the module, the power LEDs display.

Continued on next page

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2.1.1 TDS-2 Time Distribution Server Module Architecture, continued

TDS-2 back-

plate The TDS-2 module rear-plate contains:

•12V DC power inlet

•Power status LED

•PPS status LED

•Host connector for connection to a PC

•Chain out port for optional connection to Endace TDS-6 signal

expansion units

Figure Figure 2-2 shows the TDS-2 module rear-plate architecture.

Figure 2-2. TDS-2 Module Rear-plate Architecture.

TDS-6 module When additional time synchronization outputs are required, the capacity of

a TDS-2 module is expanded six outputs at a time without compromising

timing accuracy by attaching up to four Endace TDS6 units.

One TDS-2 module with the maximum number of TDS-6 expansion

modules provides 24 time synchronization outputs derived from a single

external time standard. The TDS-6 unit outputs are connected to up to 24

DAG cards using conventional Ethernet style patch cables.

2.1.2 TDS-2 Time Distribution Server Module System Requirements

Description The TDS-2 Time Distribution Server module minimum operating system

requirements are:

•12V DC power to rear panel, typical power consumption is 2 watts

•An external time reference source:

oGPS input from Trimble Acutime 2000 GPS time receiver,

Type RS422

oCDMA input from Endrun Technologies Praecis Ct CDMA

time receiver, Type RS232

•Standard Ethernet type RJ45-RJ45 cabling for connecting to DAG

cards

Continued on next page

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