EXPO SyncWatch-110 Manuale utente

www.EXFO.com

Telecom Test and Measurement

SyncWatch-110

User Guide

Issue 1.49

Versatile Synchronization Test

and Monitoring System

SyncWatch Version A

SyncWatch User Guide Issue 1.49

EXFO Inc. 2

reproduced, stored in a retrieval system or transmitted in any form, be it electronically,

mechanically, or by any other means such as photocopying, recording or otherwise, without the

prior written permission of EXFO Inc. (EXFO).

Information provided by EXFO is believed to be accurate and reliable. However, no responsibility is

assumed by EXFO for its use nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise under any patent rights of

EXFO.

EXFO’s Commerce and Government Entities (CAGE) code under the North Atlantic Treaty

Organization (NATO) is 0L8C3.

The information contained in this publication is subject to change without notice.

Trademarks

EXFO’s trademarks have been identified as such. However, the presence or absence of such

identification does not affect the legal status of any trademark.

Units of measurement

Units of measurement in this publication conform to SI standards and practices.

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Safety information

CAUTION

This unit is for indoor use only.

CAUTION

All electrical interfaces are SELV (Safety Extra Low Voltage) circuitry intended for intra-

building use only.

To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.

CAUTION

No user serviceable parts are contained inside. Contact the manufacturer regarding service

of this equipment.

IMPORTANT

All wiring and installation must be in accordance with local building and electrical codes

acceptable to the authorities in the countries where the equipment is installed and used.

CAUTION

Electrostatic Discharge (ESD) Sensitive Equipment:

The unit can be damaged by static electrical discharge, particularly when performing fuse

changes or adding a SIM card to the GSM/GPRS modem inside the unit. To minimize the

risk of damage, dissipate static electricity by touching a grounded unpainted metal

object;

Before removing, inserting, or handling the unit.

Before connecting or disconnecting cables to/from the unit.

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Critical information

Caution: The SyncWatch probe should only be installed and maintained by a suitably qualified

engineer after observing the precautions listed within this guide. If the SyncWatch product is used in

a manner not specified in the instructions the safety afforded by the product may be impaired.

Warning: To avoid serious personal injury or death, do not disregard

warnings. All warnings use this symbol. Warnings are installation, operation,

or maintenance procedures, practices, or statements that if not strictly

observed, may result in serious personal injury or even death.

Caution: To avoid personal injury, do not disregard cautions. All cautions

use this symbol. Cautions are installation, operation, or maintenance

procedures, practices, conditions, or statements that if not strictly observed,

may result in damage to, or destruction of, the equipment. Cautions are also

used to indicate a long-term health hazard.

ESD Caution: To avoid personal injury and electrostatic discharge (ESD)

damage to equipment, do not disregard ESD cautions. All ESD cautions use

this symbol. ESD cautions are installation, operation, or maintenance

procedures, practices, conditions, or statements that if not strictly observed,

may result in possible personal injury, electrostatic discharge damage to, or

destruction of, static-sensitive components of the equipment.

Electrical Shock Caution: To avoid electrical shock and possible personal

injury, do not disregard electrical shock cautions. All electrical shock

cautions use this symbol. Electrical shock cautions are practices,

procedures, or statements that if not strictly observed, may result in possible

personal injury, electrical shock damage to, or destruction of components of

the equipment.

Recommendation: All recommendations use this symbol. Recommendations

indicate manufacturer-tested methods or known functionality.

Recommendations contain installation, operation, or maintenance

procedures, practices, conditions, or statements, that provide important

information for optimum performance results.

Note: All notes use this symbol. Notes contain installation, operation, or

maintenance procedures, practices, conditions, or statements that alert you

to important information, which may make your task easier or increase your

understanding.

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Certification information

North America Regulatory Statement

This unit was certified by an agency approved in both Canada and the United States of America. It

has been evaluated according to applicable North American approved standards for product safety

for use in Canada and the United States.

Electronic test and measurement equipment is exempt from FCC part 15, subpart B compliance in

the United States of America and from ICES-003 compliance in Canada. However, EXFO Inc.

makes reasonable efforts to ensure compliance to the applicable standards.

The limits set by these standards are designed to provide reasonable protection against harmful

interference when the equipment is operated in a commercial environment. This equipment

generates, uses, and can radiate radio frequency energy and, if not installed and used in

accordance with the user guide, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which

case the user will be required to correct the interference at his own expense.

Modifications not expressly approved by the manufacturer could void the user's authority to operate

the equipment

European Community Declaration of Conformity

Warning: This is a class A product. In a domestic environment, this product may cause radio

interference in which case the user may be required to take adequate measures.

An electronic version of the declaration of conformity for your product is available on our website at

www.exfo.com. Refer to the product’s page on the Web site for details.

Note: If the equipment described herein bears the CE symbol, the said equipment complies with

the applicable European Union Directive and Standards mentioned in the Declaration of Conformity.

For continued compliance to the requirements of the EMC Directive:

For the BNC/AUX port(s) use double-shielded coaxial cable, type 734A or equivalent.

For the REF OUT port use double-shielded cable, type LMR-240 ULTRAFLEX or equivalent,

with a maximum length of 3m.

If the equipment described herein bears the CE symbol, the said equipment complies with the

applicable European Union Directive and Standards mentioned in the Declaration of Conformity.

For BNC Input ports A & D use ferrites Wurth PN 742 711 42 to comply with Radiated emissions

requirement.

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Contents

Copyright statement.......................................................................................................... 2

Trademarks....................................................................................................................... 2

Units of measurement....................................................................................................... 2

Safety information............................................................................................................. 3

Critical information............................................................................................................ 4

Certification information.................................................................................................... 5

North America Regulatory Statement............................................................................... 5

European Community Declaration of Conformity............................................................. 5

Contents.................................................................................................................................. 7

About this guide ........................................................................................................... 151.

Purpose of this guide......................................................................................................15

Who should read this guide............................................................................................15

Structure of this guide..................................................................................................... 16

Useful definitions ............................................................................................................16

Abbreviations.................................................................................................................. 16

Synchronization introduction...................................................................................... 192.

What is network synchronization?.................................................................................. 19

Network clocks.............................................................................................................19

Effects of poor synchronization.................................................................................... 19

A telecom sync system ................................................................................................ 19

Source clocks ................................................................................................................. 20

Traditional networks.....................................................................................................20

Packet networks........................................................................................................... 20

Receiver clocks...............................................................................................................20

Traditional networks.....................................................................................................21

Packet networks........................................................................................................... 21

Management................................................................................................................... 21

Monitoring..................................................................................................................... 21

Testing..........................................................................................................................22

Making synchronization and timing measurements................................................. 233.

Synchronization and timing measurement fundamentals...............................................23

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Synchronization in telecom networks...........................................................................23

Determining the signal type..........................................................................................24

Controlling signal levels and integrity...........................................................................25

Matching end-to-end signal impedance.......................................................................26

Using correct cable infrastructure ................................................................................26

Compensating for propagation delay...........................................................................27

Understanding what is being measured.......................................................................28

Choosing a valid measurement reference................................................................... 29

Validating the internal reference .................................................................................. 30

Identifying invalid measurements.................................................................................31

Identifying valid measurements ...................................................................................32

Product overview.......................................................................................................... 334.

The system .....................................................................................................................33

Modes of operation......................................................................................................... 34

USB mode.................................................................................................................... 35

SyncWatch probe hardware....................................................................................35

SyncWatch SMART software..................................................................................36

USB Measurement Configurator software.............................................................. 36

Standalone mode......................................................................................................... 37

SyncWatch probe hardware....................................................................................37

SyncWatch SMART software..................................................................................38

Managed mode............................................................................................................39

SyncWatch probe hardware....................................................................................39

NetSMART software ...............................................................................................40

SyncWatch SMART software (optional) ................................................................. 40

Hardware ....................................................................................................................... 415.

Front panel connections .................................................................................................41

Inputs............................................................................................................................42

Outputs and other connections.................................................................................... 43

Overview of signal connections...................................................................................... 43

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Flexible frequency ports.......................................................................................... 43

E1/T1 ports..............................................................................................................43

SyncE/PTP port ......................................................................................................43

SyncE/PTP ports.....................................................................................................44

1 PPS port...............................................................................................................44

TOD / 1 PPS port.................................................................................................... 44

Output port.............................................................................................................. 44

GNSS port...............................................................................................................44

GPRS...................................................................................................................... 44

Front panel Module Status LEDs....................................................................................45

Front panel Control buttons............................................................................................ 46

Optional internal modules............................................................................................... 46

Signal connections –pin assignment.............................................................................47

Balanced (INPUTS A and C)........................................................................................47

BNC connectors (INPUTS A-F and OUT).................................................................... 47

RS232 (Local) .............................................................................................................. 47

Sync E (INPUT G)........................................................................................................48

LAN port (LAN).............................................................................................................48

Installation..................................................................................................................... 496.

Unpacking and preparing................................................................................................ 49

Installation tools and equipment ..................................................................................49

Unpacking the probe.................................................................................................... 49

Rack mount.............................................................................................................50

Power (-48 vDC) ..................................................................................................... 50

Grounding the probe............................................................................................... 51

GPS antenna installation................................................................................................51

Safety considerations................................................................................................... 51

Selecting a site for the antenna ................................................................................... 52

Roof antenna placement.........................................................................................52

Typical roof antenna mounting................................................................................52

Installing the GPS antenna ..........................................................................................53

GSM/GPRS SIM card..................................................................................................... 54

Software installation........................................................................................................ 54

SyncWatch SMART .....................................................................................................54

USB measurement configurator...................................................................................54

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NetSMART................................................................................................................... 54

Initial probe configuration (all modes) ....................................................................... 557.

Communicating with the probe....................................................................................... 55

Local port...................................................................................................................... 55

LAN port....................................................................................................................... 55

Configuration .................................................................................................................. 56

Main menu.................................................................................................................... 56

Information menu.........................................................................................................57

Configuration menu...................................................................................................... 57

Managed configuration ...........................................................................................59

Standalone configuration........................................................................................60

USB configuration................................................................................................... 61

Ethernet configuration............................................................................................. 62

Modem configuration ..............................................................................................63

Hardware configuration........................................................................................... 64

Date and time configuration....................................................................................65

GPS status check ...................................................................................................66

Actions menu ...............................................................................................................68

USB mode - configuration ........................................................................................... 698.

Measurement configuration............................................................................................ 70

To configure a reference source.................................................................................. 70

To configure a measurement source...........................................................................71

To configure a second measurement source............................................................... 72

Monitor output .............................................................................................................. 74

UTC offset.................................................................................................................... 74

Export to USB .............................................................................................................. 74

Save config................................................................................................................... 74

Start measurement......................................................................................................... 75

End measurement ..........................................................................................................75

Standalone mode –Operation..................................................................................... 779.

Connect to probe ............................................................................................................ 77

Frequency measurement................................................................................................ 80

Configure a reference source.......................................................................................81

Configure a measurement source................................................................................ 83

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