Viavi T-BERD/MTS 2000, T-BERD/MTS 4000 V2 User Manual

OTDR Functions, Options and Software Applications

OTDR functions, options and software
applications for SmartOTDR and T-BERD/
MTS 2000/4000 V2

User Manual

OTDR Functions, Options and
Software Applications

OTDR functions, options and software
applications for SmartOTDR and T­BERD/MTS 2000/4000 V2

User Manual

Viavi Solutions
1-844-GO-VIAVI

www.viavisolutions.com

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as part of the User Manual.

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Equipment (WEEE) Directive, 2002/96/EC.

User Manual 77000010208 Rev. 012 v

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vi User Manual 77000010208 Rev. 012

Contents

About This Guide

Purpose and scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Assumptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Recycling Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

xvii

Chapter 1 Principle of Measurement

Principle of reflectometry measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Information yielded by the measurement . . . . . . . . . . . . . . . . . . . . . . . . 2

Validity of Measurement ITU-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Reflectance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Principle of optical power and attenuation measurements . . . . . . . . . . 4

Power measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Attenuation measurements (optical link loss) . . . . . . . . . . . . . . . . . . . . . 4

Chapter 2 Starting up

Unpacking the device - Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Fitting and removing a module (not available with SmartOTDR) . . . . . 8

Fitting a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Removing a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Connecting fiber optic cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Inspecting and cleaning connector end faces. . . . . . . . . . . . . . . . . . . . . 10

1

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Optical connector types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connecting Fiber optic cable to test port. . . . . . . . . . . . . . . . . . . . . . . . . 12

Optical connectors and interchangeable adapters . . . . . . . . . . . . . . . . . . 13

Interchangeable adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Switchable Adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Cleaning universal connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 3 Activating OTDR function

17

Selecting the Smart Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Principle of the Smart Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Selecting Smart Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Selecting the OTDR Expert function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Principle of the OTDR Expert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Selecting OTDR Expert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Chapter 4 Configuring the reflectometry test

21

Configuring the unit for Smart Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Selecting the configuration file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Modifying some parameters before the acquisition. . . . . . . . . . . . . . . . 23

Configuring the test in Expert OTDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Configuring the Acquisition parameters. . . . . . . . . . . . . . . . . . . . . . . . . 26

Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Launch cable parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Specific Acquisition parameters with DWDM Modules . . . . . . . . . . . . . 30

Configuring the Alarms parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Configuring the Analysis parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Configuring the Link parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Configuring the File parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Configuration in Test Auto mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Saving OTDR configuration in a file . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Loading an existing OTDR configuration . . . . . . . . . . . . . . . . . . . . . . . . 50

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Chapter 5 Launching a reflectometry test and displaying results

53

Performing OTDR acquisitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Performing an acquisition in Real Time mode . . . . . . . . . . . . . . . . . . . . 54

Principle of the Real time mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Performing acquisition in Real Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Stopping the real time acquisition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Performing a measurement with Smart Test . . . . . . . . . . . . . . . . . . . . . 56

Performing an acquisition with Expert OTDR . . . . . . . . . . . . . . . . . . . . 57

Performing an acquisition from Results page . . . . . . . . . . . . . . . . . . . . 59

Multi-wavelength acquisition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Actions on trace during acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Saving results for Smart Test acquisitions . . . . . . . . . . . . . . . . . . . . . . . . . 62

Results display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Smart Link view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Show the detailed information of one event . . . . . . . . . . . . . . . . . . . . . 65

Event View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Trace View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Common functions on Trace View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Advanced functions in Expert OTDR mode . . . . . . . . . . . . . . . . . . . . . . . .80

Automatic measurement and detection . . . . . . . . . . . . . . . . . . . . . . . . . 80

Addition of events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Representation of the events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Hints on the positioning of markers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Deleting events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Manual measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Measurements of slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Measurement of ORL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Measurement of Reflectance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Splice measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Memorization of the position of events . . . . . . . . . . . . . . . . . . . . . . . . . 87

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Overlay trace function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Overlaying several traces stored in memory. . . . . . . . . . . . . . . . . . . . . . 88

Display of traces in overlay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Adding traces in overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Swapping overlay traces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Removing a trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Quitting the overlay menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Reference Trace function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Use of the reference trace function in the Result page . . . . . . . . . . . . . 90

Using the reference trace function in the explorer. . . . . . . . . . . . . . . . . .91

Saving the trace(s) and generating a report. . . . . . . . . . . . . . . . . . . . . . . 92

Saving results and creating a report from results page. . . . . . . . . . . . 92

Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

OptiPulses™ option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Configuring the OTDR acquisition with OptiPulses™ mode . . . . . . . . 96

Results in OptiPulses™ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Chapter 6 Power meter and Source options of the OTDR

Modules

Connection to the power meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Configuring the Power meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Configuring the alarm parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Configuring the Measurement parameters . . . . . . . . . . . . . . . . . . . . . .102

Activating the Source function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Result page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Result page of the Power meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Table of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Commands of the power meter parameters. . . . . . . . . . . . . . . . . . . . . 104

Combo PM/OTDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Result page of the Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Performing the power level measurement . . . . . . . . . . . . . . . . . . . . . . . .107

Performing the insertion loss measurement. . . . . . . . . . . . . . . . . . . . . . 108

Setting the zero value of the power meter . . . . . . . . . . . . . . . . . . . . . 108

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Carrying out the reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Carrying out the side by side reference. . . . . . . . . . . . . . . . . . . . . . . . . 108

Carrying out the reference in loopback mode . . . . . . . . . . . . . . . . . . . . 110

Measurements on the fiber under test . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Storing and reloading results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

File Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Storing results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Loading results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Terminated PON Powermeter (SmartOTDR only). . . . . . . . . . . . . . . . . . .113

Configuring the powermeter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Configuring the alarm parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Configuring the Measurement parameters . . . . . . . . . . . . . . . . . . . . . . .115

Configuring the Link parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Setting the zero value of the power meter . . . . . . . . . . . . . . . . . . . . . .117

Measuring the signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Combo PM/OTDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Storing results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Chapter 7 FTTA-SLM Software option

121

Principle of FTTA-SLM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Acceptance Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Troubleshooting Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Configuring the Reflectometry test for FTTA network. . . . . . . . . . . . . 124

Acquisition (FTTA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Launching the acquisition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Results page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

Trace View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

SmartLink view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Getting a diagnostic of an event. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Event View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Changing the name of an event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Saving the trace(s) and generating a report . . . . . . . . . . . . . . . . . . . . . . 137

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Saving results and creating a report from results page. . . . . . . . . . . . 137

Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

Chapter 8 FTTH-SLM Software option

141

Principle of FTTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Configuring the Reflectometry test for FTTH network . . . . . . . . . . . . .143

FTTH setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Acquisition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Alarms parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Link parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Launching the acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

Results page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Trace View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

SmartLink view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Getting a diagnostic of an event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Results Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

Event View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

Changing the type of an event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Saving the trace(s) and generating a report. . . . . . . . . . . . . . . . . . . . . . . 157

Saving results and creating a report from results page. . . . . . . . . . . . 157

Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

Chapter 9 Cable-SLM option

161

Principle of Cable-SLM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Configuring the Cable-SLM project. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Configuring the project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Saving the project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163

Loading an existing project. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Starting project test process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165

Trace saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Results of project cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Description of the table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Deactivate the fiber test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

View Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

xii User Manual 77000010208 Rev. 012

Contents

Files and Project storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Text file content. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Chapter 10 Enterprise-SLM Software option

171

Principle of Enterprise-SLM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Configuring the Enterprise-SLM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Loading a SmartConfig™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Site Info Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Site Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Simple OTDR Testing (for single fiber) . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Managing projects for multi-fibers Testing . . . . . . . . . . . . . . . . . . . . . . . 179

Opening an existing project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Creating a project from the Setup page . . . . . . . . . . . . . . . . . . . . . . . . 180

Project display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Tes ti ng MP O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Stopping the test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Trace saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Results of project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Description of the table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

View Trace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

SmartLink view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Saving the trace(s) and generating a report . . . . . . . . . . . . . . . . . . . . . . 187

Chapter 11 FiberComplete Modules

191

General introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Activating the function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Establishing References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Reference stage process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

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Contents

Loopback Referencing method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Side-by-Side referencing method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

Factory References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

Configuring the units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Acquisition parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201

Alarms parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Analysis parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

File parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

Automatic configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Saving the parameters from FiberComplete configuration. . . . . . . . 206

Loading a configuration file FiberComplete. . . . . . . . . . . . . . . . . . . . . 207

Performing the tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Sending a message to the distant Platform . . . . . . . . . . . . . . . . . . . . 208

Starting the test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Results screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

Cable view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

Fiber View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Fault Finder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

OTDR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Saving results and generating a report . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

Saving results and creating a report from results page. . . . . . . . . . . . 213

Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

File management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216

Storing results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216

Filenaming convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216

Chapter 12 File management

219

Description of the explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Opening the file explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Managing tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

File signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221

Buttons on the right of the screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Storage media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Directories and files editing function . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Saving and loading files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

xiv User Manual 77000010208 Rev. 012

Contents

Saving files from the Explorer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Loading files and displaying traces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Simple loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Load with configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Loading several traces in overlay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Exporting files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Explorer/Link Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Editing function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Exporting a directory in a txt file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Generating pdf report(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

Using the Merge key, with the txt/pdf files . . . . . . . . . . . . . . . . . . . . . 229

Chapter 13 Technical specifications

231

OTDR modules for T-BERD/MTS 2000/4000 V2 . . . . . . . . . . . . . . . . . . . 232

Characteristics of reflectometry measurements . . . . . . . . . . . . . . . . . 232

Manual Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Typical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

CWDM Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

DWDM Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

Class of the lasers of the OTDR modules . . . . . . . . . . . . . . . . . . . . . . . 239

OTDR modules measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Technical specifications of the Power meter function on OTDR module
for T-BERD/MTS-2000/4000 V2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Technical specifications of the Source function on OTDR module for T­BERD/MTS-2000/4000 V2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Technical specifications of the FiberComplete modules. . . . . . . . . . . . 241

MPO Switch Module Technical specifications . . . . . . . . . . . . . . . . . . . . . 242

OTDR Technical specifications for SmartOTDR . . . . . . . . . . . . . . . . . . . . 243

OTDR Optical Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

OTDR Optical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Characteristics of reflectometry measurements . . . . . . . . . . . . . . . . . 243

Typical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

User Manual 77000010208 Rev. 012 xv

Contents

Characteristics of the Source (standard) and Power Meter (optional) .
245

Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Power meter (through OTDR port) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

PON/XG-PON Power Meter (E118FA65PPM version). . . . . . . . . . . . . . . 246

Chapter 14 Options and accessories

247

References of measurement modules for T-BERD/MTS-2000/4000 V2

248

OTDR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

CWDM OTDR Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

DWDM OTDR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

MPO Switch Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

FiberComplete modules with OTDR function . . . . . . . . . . . . . . . . . . . 250

FiberComplete modules with Fault Finder function . . . . . . . . . . . . . . . 251

Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

References of the SmartOTDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

User manual references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

References of optical connectors and adapters . . . . . . . . . . . . . . . . . . 253

Index

255

xvi User Manual 77000010208 Rev. 012

About This Guide

The MTS/T-BERD 2000 of Viavi provides a handheld, modular platform designed for the
construction, validation and maintenance of fiber networks.

The topics discussed in this chapter are as follows:

• “Purpose and scope” on page xviii

• “Assumptions” on page xviii

• “Technical assistance” on page xviii

• “Recycling Information” on page xviii

• “Conventions” on page xviii

xvii

User Manual 77000010208 Rev. 012

About This Guide

Purpose and scope

Purpose and scope

The purpose of this guide is to help you successfully use the MTS/T-BERD 2000
features and capabilities. This guide includes task-based instructions that describe how
to install, configure, use, and troubleshoot the MTS/T-BERD 2000 with modules.

Assumptions

We are assuming that you have basic computer and mouse/track ball experience and
are familiar with basic telecommunication and fiber optic concepts and terminology.

Technical assistance

If you require technical assistance, call 1-844-GO-VIAVI. For the latest TAC information,
go to http://www.viavisolutions.com/en/services-and-support/support/technical-assis-

tance.

Recycling Information

Viavi recommends that customers dispose of their instruments and peripherals in an
environmentally sound manner. Potential methods include reuse of parts or whole prod­ucts and recycling of products components, and/or materials.

Waste Electrical and electronic Equipment (WEEE)
Directive

In the European Union, this label indicates that this product should not be
disposed of with household waste. Il should be deposited at an appropriate
facility to enable recovery and recycling.

Conventions

This guide uses naming conventions and symbols, as described in the following tables.

xviii User Manual 77000010208 Rev. 012

About This Guide

Conventions

Tab l e 1 Typographical conventions

Description Example

User interface actions appear in this typeface. On the Status bar, click Start.

Buttons or switches that you press on a unit
appear in this

TYPEFACE.

Code and output messages appear in this type-

Press the ON switch

All results okay

face.

Text you must type exactly as shown appears in
this

typeface.

Type: a:\set.exe in the dialog box

Variables appear in this typeface. Type the new hostname.

Book references appear in this typeface. Refer to Newton’s Telecom Dictio-

nary

A vertical bar | means “or”: only one option can

platform [a|b|e]

appear in a single command.

Square brackets [ ] indicate an optional argu-

login [platform name]

ment.

Slanted brackets < > group required arguments.

<password>

Tab l e 2 Keyboard and menu conventions

Description Example

A plus sign + indicates simultaneous keystrokes. Press Ctrl+s

A comma indicates consecutive key strokes. Press Alt+f,s

A slanted bracket indicates choosing a submenu
from menu.

xix

User Manual 77000010208 Rev. 012

On the menu bar, click

Start > Program Files.

About This Guide

Conventions

Tab l e 3 Symbol conventions

This symbol represents a general hazard.

This symbol represents a risk of electrical shock.

NOTE

This symbol represents a Note indicating related information or tip.

This symbol, located on the equipment or its packaging indicates that
the equipment must not be disposed of in a land-fill site or as municipal
waste, and should be disposed of according to your national regula­tions.

Tab l e 4 Safety definitions

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury.

xx User Manual 77000010208 Rev. 012

1

Chapter1 Principle of Measurement

This chapter gives the principles of the measurements made by the optical modules.

The topics discussed in this chapter are as follows:

• “Principle of reflectometry measurements” on page 2

• “Principle of optical power and attenuation measurements” on page 4

User Manual 77000010208 Rev. 012 1

Chapter 1 Principle of Measurement

Principle of reflectometry measurements

Principle of reflectometry measurements

Optical time domain reflectometry consists in injecting a light pulse into one end of the
optical fiber to be analyzed and observing, at the same end, the optical intensity passing
through the fiber in the opposite direction to the propagation of the pulse.
The signal detected is exponentially diminishing in form, typical of the phenomenon of
backscattering, with superimposed peaks due to reflections from the ends of the fiber or
other variations in the refractive index.

Figure 1 Trace showing typical backscattering

Information yielded by the measurement

From a backscatter trace it is possible, in particular, to determine the position of a section
of fiber within a link. The measurement result must reveal:

• the attenuation

• the location of faults, by their distance from a point of origin,

• attenuation with respect to distance (dB/km)

• the reflectance of a reflective event or a link.

2 User Manual 77000010208 Rev. 012

Chapter 1 Principle of Measurement

Principle of reflectometry measurements

To locate faults, a reflectometer measures only time. Consequently, group
velocity must be introduced in order to determine the distance of the loca­tion. This is done by introducing the refractive index of the fiber into the
instrument.

Validity of Measurement ITU-T

ITU-T in recommendations G.650, G.651 and G.652, give backscatter measurement as
an alternative method for measuring attenuation, the method of reference being the cut
fiber.

The field of application of backscatter is not limited, but the conditions for application of
this method are nevertheless stipulated:

• injection conditions: Fresnel reflections must be limited at fiber input.

• a high-power source (laser) should be used.

• receiver bandwidth should be chosen to achieve a compromise between pulse

rise time and noise level.

• backscatter power should be represented on a logarithmic scale.

Reflectance

Reflectance is a value with which the coefficient of reflection of a reflecting optical
element can be quantified. It is defined as the ratio of the power reflected by the element
over the incident power.

These reflections are due to variations in refractive index all along the optical link in
certain telecommunications applications. If they are not controlled, they may degrade
the performance of the system by perturbing the operation of the emitting laser (espe­cially DFB lasers) or may generate interference noise in the receiver by multiple reflec­tions.

The reflectometer is particularly well suited to the measurement of discrete reflectances
on an optical fiber link. To calculate the coefficient of reflection, it is necessary to
measure the total amplitude of the Fresnel reflection generated and then to apply a
conversion formula to obtain the reflectance value.

This formula takes into account:

• the total amplitude of the reflection measured by the reflectometer.

• the pulse width used to measure the amplitude of the reflection (in nanoseconds)

User Manual 77000010208 Rev. 012 3

Chapter 1 Principle of Measurement

Principle of optical power and attenuation measurements

• the backscatter coefficient of the fiber used:

– typical values of the backscatter coefficient for a pulse of 1 ns and

– for a single-mode fiber:-79 dB at 1310 nm

-81 dB at 1550 nm and 1625 nm

– for a multi-mode fiber:-70 dB at 850 nm

-75 dB at 1300 nm

NOTE

To measure the widest range of reflection coefficient, it is necessary to insert
a variable optical attenuator between the reflectometer and the link to be
tested. This attenuator enables the level of the trace to be adjusted so as to
avoid saturation of the reflectometer by the reflection to be evaluated.

Principle of optical power and attenuation
measurements

Power measurements

A power meter, is all that is needed to measure emitted or received power:

• to measure emitted power, connect the power meter directly to the output of the
optical emitter;

• to measure the power at the input of an optical receiver, the power meter is
connected to the end of the fiber, at the point where the optical receiver would be
connected.

Attenuation measurements (optical link loss)

For measurement of the attenuation of power in a complete link or in elements such as
sections of fiber, connections or optical components, a light source and a power meter
are required.

This attenuation is usually deduced from the measurement of optical power at two
points:

4 User Manual 77000010208 Rev. 012

Chapter 1 Principle of Measurement

Laser light
source

Reference

fiber

Link under test

Power meter of the
MTS/T-BERD
2000/4000 V2

1

2

Principle of optical power and attenuation measurements

Attenuation A

(dB)

= P1

(dBm)

- P2

(dBm)

To perform accurate measurements, the following conditions are necessary

• Use a light source which is stable both in time and as a function of temperature.

• Make sure that all connections and fibers and the receiving cell are perfectly

clean.

• Use a reference link between the laser source and the test subject. If several
measurements are to be made under identical light injection conditions, this refer­ence fiber must not be disconnected during the period while measurements are
taking place.

Insertion loss method

1 The power meter is first connected to the laser source via the reference fiber: P1

is measured.

2 Then the fiber to be tested is inserted between the reference fiber and the power

meter: P2 is measured.

The difference between P2 and P1 gives the attenuation of the fiber under test.

It is preferable to use the same type of connector at both ends of the fiber being
tested, to ensure the same connection conditions for measuring P1 and P2.

Accuracy of measurements

• A high degree of accuracy is often required. It is then necessary to perform a
preliminary calibration without the fiber under test to eliminate the losses due to
connections as far as this is possible. To do this, use the «Reference Value» func­tion.

User Manual 77000010208 Rev. 012 5

Chapter 1 Principle of Measurement

Principle of optical power and attenuation measurements

6 User Manual 77000010208 Rev. 012

Chapter2 Starting up

This chapter describes how to start using the MTS/T-BERD or the SmartOTDR.

The topics discussed in this chapter are as follows:

• “Unpacking the device - Precautions” on page 8

• “Fitting and removing a module (not available with SmartOTDR)” on page 8

• “Connecting fiber optic cable” on page 10

• “Optical connectors and interchangeable adapters” on page 13

2

User Manual 77000010208 Rev. 012 7

Chapter 2 Starting up

Unpacking the device - Precautions

Unpacking the device - Precautions

We suggest that you keep the original packing material. It is designed for reuse (unless
it is damaged during shipping). Using the original packing material ensures that the
device is properly protected during shipping.

If another packaging is used (for returning the equipment for example), Viavi cannot give
warranty on good protection of the equipment.

If needed, you can obtain appropriate packing materials by contacting Viavi Technical
Assistance Center.

Fitting and removing a module (not available with SmartOTDR)

The MTS/T-BERD must be switched off, and if it is operating on the
mains, its supply cable must be unplugged.

Fitting a module

1 Turn the instrument face down on the work surface.

2 Set the two notches on the module part (1a) into the two holes provided for that

purpose on the Base (1b).

3 Make flush the 2 connections (2a & 2b), on module and base.

4 Once positioned, fix the module to the base screwing the 2 screws (3a) fixing the

receptacle.

5 With a T-BERD/MTS 4000 V2

installed at the back of the platform.

, repeat the process if a small module must be

8 User Manual 77000010208 Rev. 012

Fitting and removing a module (not available with SmartOTDR)

C

a

p

t

i

v

e

s

c

r

e

w

s

f

i

x

i

n

g

t

h

e

m

o

d

u

l

e

1b

1b

2a

2b

2

0

0

0

P

l

a

t

f

o

r

m

w

i

t

h

m

o

d

u

l

e

i

n

s

t

a

l

l

e

d

2

0

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0

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r

m

w

i

t

h

o

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t

m

o

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u

l

e

1a

1a

3a

3a

Captive screws fixing the module(s)

1a

1b

2b

2a

Figure 2 Fixing the module to the 2000 Base-Unit

Figure 3 Fixing the module to the 4000 V2 Base-Unit

Chapter 2 Starting up

User Manual 77000010208 Rev. 012 9

Chapter 2 Starting up

Connecting fiber optic cable

Removing a module

1 Unscrew the two captive fixing screws of the module completely (up to the stop).

2 Remove the two slots of the module from their housing onto the base.

3 Carefully remove the module out of its slot.

Connecting fiber optic cable

Inspecting and cleaning connector end faces

Always inspect and clean the connector end face of the optical fiber
cable and the test port before mating both together.

Viavi is not responsible for damage and reduced performance caused
by bad fiber handling and cleaning.

• Optical connector contamination is the #1 source of performance degradation

and test equipment repair

• A single particle mated into the core of a fiber can cause significant back reflec­tion, insertion loss and equipment damage. Visual inspection is the only way to
determine if the fiber connectors are truly clean before mating them.

Follow this simple "INSPECT BEFORE YOU CONNECT" process to ensure fiber end
faces are clean prior to mating connectors

Figure 4 "Inspect Before You Connect" process

10 User Manual 77000010208 Rev. 012

Chapter 2 Starting up

Connecting fiber optic cable

Optical connector types

There are many optical connectors in the market place. Always ensure to use a high
quality connector that meets the international standards.

Two main types of connectors are deployed in the telecommunication industry:

1 Straight polished connectors, so called PC or UPC

2 Angled polished connectors, so called APC

The PC or UPC-type test port is identified by a grey cap with the addition of a "PC" label.
The APC-type test port is identified by a green cap with the addition of a "APC" label.

Figure 5 Modules with APC and PC connector for T-BERD/MTS 2000 & 4000 V2

Caution

Never connect a PC connector into an APC test port or vice versa. This will result in
damaging the connector end faces.

Figure 6 PC/APC bad connection

User Manual 77000010208 Rev. 012 11

Chapter 2 Starting up

Connecting fiber optic cable

WARNING

Viavi declines responsibilities of connector damages if a poor quality con­nector is used or APC to PC connections made. Test port connector repair
will be charged

WARNING

All the universal connectors are available on the OTDR Modules, except on
the LA Module.

Connecting Fiber optic cable to test port

After ensuring proper cleaning of both end connectors, follow the below steps in order
to correctly and safely connect the optical fiber into the test port:

1 Carefully align the connector and test port to prevent the fiber end from touching

the outside of the port and scratching the end face.

NOTE

If your connector features a keying mechanism, ensure that it is correctly fit­ted into the test port's insert.

2 Push the connector to firmly place it inside ensuring physical end face contact.

NOTE

If your connector features a screw-on sleeve, tighten the connector to firmly
maintain the fiber in place. Do not over tighten as this will damage the fiber
and the test port.

WARNING

Never force the connector ferrule or insert it with an angle into the test port
adapter. Mechanical stress may permanently damage the ceramic sleeve of
the adapter or the end face of the connector. A new adapter purchase only
will get the unit back to operation

12 User Manual 77000010208 Rev. 012

Chapter 2 Starting up

FC Adapter (EUFCAD)

DIN Adapter (EUDINAD)

ST Adapter (EUSTAD)

SC Adapter (EUSCAD)

Pull out in the direction of the
arrow in order to release the
adapter from the lug holes

To place an adapter, position
the handle as shown in order to
engage with the the lugs, push
hard and pull the handle down

Optical connectors and interchangeable adapters

Optical connectors and interchangeable adapters

Fiber Optic modules will come with a UPC or APC connector.

Interchangeable adapters

Viavi offers interchangeable adapters, allowing the user to switch from one adapter to
another according to which fiber type he intends to work with.
Adapter types supplied are: FC, SC, DIN and ST.

Figure 7 4 different types of adapters may be mounted on the universal connector

In order to switch from an adapter to another, proceed as shown.

Figure 8 Removing and refitting an adapter

Switchable Adapters

For the SmartOTDR and some test modules, Viavi offers switchable adapters (also
called screw-type adapters). Adapter types supplied are: FC, SC and LC.

To mount a switchable adapter:

1 Unscrew the two screws of the adapter currently mounted onto the connector.

User Manual 77000010208 Rev. 012 13

Chapter 2 Starting up

Optical connectors and interchangeable adapters

2 Remove the adapter

3 Set the new adapter vertically on the optical connector, making flush the «mark»

on the adapter with the mark on the connector.

Figure 9 Position of the adapter onto the connector

4 Fix the adapter with the two screws.

Figure 10 Fixing the adapter

NOTE

It is recommended to use a magnetic screwdriver.

NOTE

When changing the optical connector, take caution not to scratch the con­nector mating surfaces. Carefully align the removable piece and the base­plate ferrule when inserting the adapter part.

Once adapter is mounted, the module is ready to be used onto the Base-Unit.

14 User Manual 77000010208 Rev. 012

Chapter 2 Starting up

Optical connectors and interchangeable adapters

Cleaning universal connectors

Remove the adapter in order to access the ferrule and clean it using a cotton swab.

User Manual 77000010208 Rev. 012 15

Chapter 2 Starting up

Optical connectors and interchangeable adapters

16 User Manual 77000010208 Rev. 012

3

Chapter3 Activating OTDR function

For the T-BERD/MTS, make sure the OTDR module is correctly set onto the equipment.

One the equipment is switched on, the desired OTDR function must be selected before
any OTDR configuration, or measurement.

The topics discussed in this chapter are as follows:

• "Selecting the Smart Test" page 18

• "Selecting the OTDR Expert function" page 19

User Manual 77000010208 Rev. 012 17

Chapter 3 Activating OTDR function

Selecting the Smart Test

Selecting the Smart Test

Principle of the Smart Test

The Smart Test is used to perform OTDR acquisitions using a pre-loaded configuration
file (no setup required) and access to essential analysis features.

Selecting Smart Test

The Smart Test function is available whatever is the OTDR module set onto the MTS/T­BERD or whatever is the SmartOTDR used.

To select this function, after the equipment starts:

1 Press the H

Figure 11 Home page

OME button

Select the Smart Test icon.

2

The icon turns yellow and the icon displays on the upper part of the

screen (and is displayed as long as the Smart Test function is active).

After a few seconds, the page for the configuration file selection displays (see

Figure 13 on page 23).

NOTE

The selection of Smart Test icon automatically deselects the Expert OTDR
icon and vice-versa.

18 User Manual 77000010208 Rev. 012

Chapter 3 Activating OTDR function

Selecting the OTDR Expert function

NOTE

In the case a Singlemode/Multimode module, one line contains the Multi­mode icons and a second one the Singlemode icons.

To distinguish both modes, multimode icons contain the MM mark.

Selecting the OTDR Expert function

Principle of the OTDR Expert

The OTDR Expert is used to

• perform OTDR acquisitions with full OTDR setup capabilities, and advanced anal­ysis features.

• create configuration files that can be loaded by Smart Test users.

Selecting OTDR Expert

The OTDR Expert function is available whatever is the OTDR module set onto the MTS/
T-BERD or whatever is the SmartOTDR used.

To select this function, after the equipment start:

1 Press the H

2

Select the OTDR Expert icon .

OME button

The icon turns yellow .

After a few seconds, the Results page displays.

NOTE

The selection of OTDR Expert icon automatically deselects the Smart Test
icon and vice-versa.

NOTE

In the case a Singlemode/Multimode module, one line contains the Multi­mode icons and a second one the Singlemode icons.

To distinguish both modes, multimode icons contain the MM mark.

User Manual 77000010208 Rev. 012 19

Chapter 3 Activating OTDR function

Selecting the OTDR Expert function

20 User Manual 77000010208 Rev. 012

4

Chapter4 Configuring the reflectometry

test

This chapter describes the different stages in configuring a reflectometry measurement
using an OTDR module, in Smart Test or Expert OTDR.

The topics discussed in this chapter are as follows:

• "Configuring the unit for Smart Test" page 22

• "Configuring the test in Expert OTDR" page 25

User Manual 77000010208 Rev. 012 21

Chapter 4 Configuring the reflectometry test

Configuring the unit for Smart Test

Configuring the unit for Smart Test

Once the Smart Test icon is validate, the page to select a configuration file displays.

Smart Test standard process:

1 Select the configuration file, which contains all acquisition parameters and file

storage setup, and which has been created in Expert mode

configuration in a file” on page 49

2 Configure / modify some parameters before starting the test.

3 Start the acquisition (standard or real time)

4 Save the results

Figure 12 Standard Smart Test Process

).

(see “Saving OTDR

Selecting the configuration file

To load the configuration file to be used for Smart Test test:

1 In the selection file screen, select the configuration file to be used for the acquisi-

tion on Smart Test mode.

The file is underlined in blue.

2 Press Load to load the selected file and display the current parameters for this

configuration.

22 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Location of the
configuration files
for Smart Test

Configuring the unit for Smart Test

Figure 13 Load file as Smart Test Configuration

3 Once loaded, the configuration parameters that can be modified displays.

Modifying some parameters before the acquisition

In Smart Test mode, the user have access to 4 parameters he can modified before
launching the test.

Figure 14 Smart Test Setup page

• Laser The acquisition will be carried out on the wavelength(s)

selected (for multiple-wavelength modules). In case of a multi­wavelength module, select All to perform a measurement for

User Manual 77000010208 Rev. 012 23

Chapter 4 Configuring the reflectometry test

Configuring the unit for Smart Test

all the wavelengths available (this parameter visible exclusively
on modules with one single OTDR port). The possible values
depend on the module used.

• Distance unit select the unit to be used for distance (km / kfeet / miles /
meter / feet / inch).

• Launch cable Define if the Launch Cable must be taken into account for the
acquisition: No / Yes.
If Yes is selected, set the length clicking on Set Length and
enter the distance using the numeric keypad. Click on to
validate (or on to cancel)

• Alarms Define if alarms thresholds must be applied for the acquisition:
Select No if no alarm thresholds must be applied.
Select Yes to define alarms, and press Alarm Level to define
the pre-defined thresholds for the acquisition.

See Ta bl e 1 and Tab l e 2 to get the values for each pre-defined alarm thresholds.

The thresholds can be modified only in Expert mode and saved in a new configu­ration file.

Once all configuration parameters are correctly defined, the acquisition can be
launched.

24 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Back key

Press once the Back key to return to previous screen.

Whatever was the previous screen displayed, a long press on Back key
allows to return to the configuration file selection screen (see Figure 13 on page 23).

Configuring the test in Expert OTDR

Once the Expert OTDR icon is selected, the Results page automatically displays.
In Expert OTDR, the parameters for acquisition and for file storage can be configured.

1 To call up the test configuration window, press the S

Dialog boxes and menu keys on the same screen enable selection of

– Acquisition parameters

Used for the OTDR acquisition– Alarms parameters

–Analysis parameters

ETUP button.

– Link parameters

– File parameters

Figure 15 OTDR setup in Expert OTDR mode

User Manual 77000010208 Rev. 012 25

Used for the OTDR results saving

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

In these windows, the parameter selected is in video inverse.

Configuring the Acquisition parameters

You can choose the OTDR acquisition parameters.

1 Once the Setup page is displayed, press Acquisition menu key to configure the

Acquisition parameters.

The Acquisition Setup page is divided into two parts: the Acquisition box and the
Launch cable box.

If some acquisition parameters are not accessible (not visible or displayed in
grey), check in the Home page that the Expert OTDR function is selected
(see

"Selecting the OTDR Expert function" page 19).

Parameters

Switch Port (MPO only)

If an MPO Switch Module is installed onto the Platform, select manually the switch port
on the parameter Switch Port.

Laser

The acquisition will be carried out on the wavelength(s) selected (for multiple-wave­length modules). In case of a multi-wavelength module, select All to perform a measure­ment for all the wavelengths available (this parameter visible exclusively on modules
with one single OTDR port). The possible values depend on the module used.

Acquisition

Select the kind of acquisition to be performed:

Manual The acquisition parameters Pulse / Range / Resolution can be set

by user.

Auto The acquisition parameters Pulse / Range / Resolution are defined

automatically and cannot be modified

The Measurement time will be set to Auto, but can be modified (see "Time"

page 27).

26 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Range

The possible range depends on the pulse length selected. This range is given for each
pulse length in the paragraph "CWDM Modules" page 235. This parameter is exclusively
configurable if Acquisition parameter is set to Manual. It depends on the module/Smar­tOTDR used.

Auto allows to detect automatically the range.The range is selected as a

function of the end of the fiber.

Pulse

From 3ns to 20µs according to module/SmartOTDR used. Parameter selectable only if
Acquisition parameter is set to Manual.

See "Typical specifications" page 233.

NOTE

According to the value selected for Pulse parameter, the Range parameter
can be automatically modified, and vice-versa.

Resolution

This parameter is exclusively configurable if Acquisition parameter is set to Manual.

Auto resolution is selected automatically according to the last two parame-

ters above.

High Resolution the highest resolution is applied

High Dynamic the highest dynamic is applied

Time

Real time the equipment performs up to ten acquisitions per second (see

"Performing OTDR acquisitions" page 54).

NOTE

Whatever is the acquisition mode selected, an acquisition in real time mode
can be launched maintaining the
onds.

User Manual 77000010208 Rev. 012 27

START/STOP button pushed for about 2 sec-

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

NOTE

If the Acquisition parameter is defined to Auto, then the Time parameter is
defined to Auto, but can be modified.

Manual Enter the acquisition time desired (from 5 s. to 5 minutes max).

Predefined Select one of the acquisition times predefined: 10 seconds / 20

seconds / 30 seconds / 1 minute / 2 minutes / 3 minutes.

Smart Acquisition

This parameter allows to launch a short acquisition before the standard one.

The first acquisition is performed with the shortest pulse in order to detect more precisely
the events at the beginning of the fiber.

To configure the Smart Acq. parameter:

Auto a first short acquisition is performed with the shortest pulse in the

No the standard acquisition is directly launched.

If the option OptiPulses is available, see “Configuring the OTDR acquisition with Opti-

Pulses™ mode” on page 96 to configure the OTDR acquisition with this option.

(not available in Multimode)

range, before the standard one.

Otdr Connector test

This parameter allows to choose if a test of the front connector must be performed when
acquisition is launched.

No the OTDR connection is tested with indication Bad/Good.

Yes & Continue the OTDR connection is tested, and if the state is not good, the

acquisition continues but a warning displays.

Yes & Abort the OTDR connection is tested, and if the state is bad, a warning

displays and the acquisition stops.

Launch cable parameters

Launch Cable End / Receive Cable Start

No All the results are displayed and referenced on the basis of the board

of the module.

28 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

OTDR

Launch Cable Receive Cable

Fiber Under Test

Launch
Cable end

Receive Cable
start

Distance of the
launch cable

Distance of the
receive cable

Configuring the test in Expert OTDR

Evt 1, 2, 3 The results relating to the launch cable are eliminated from the table.

Attenuation and distances are then measured on the basis of the
marker Evt 1, 2 or 3 selected.

Distance Use the Edit Number key to enter a distance (Min= 0 / Max=50 km /

164.042 kfeet / 31.075 miles) or affect the active cursor value, using
the Set Cursor Distance key.

Figure 16 Launch Cable / Receive Cable

Include Link Start Connector / Include Link End Connector

Defining the Launch Cable End parameter with an event number or a distance will auto­matically activate the corresponding parameter Include Link Start Connector. This
parameters can be set to Yes if the budget must include the connectors loss of the
launch cable at end

Defining the Receive Cable Start parameter with an event number or a distance, will
automatically activate the corresponding parameter Include Link End Connector. This
parameters can be set to Yes if the budget must include the connectors loss of the
launch cable at start

If those parameters are set to No, the budget only displays the connector loss of the
fiber.

User Manual 77000010208 Rev. 012 29

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Specific Acquisition parameters with DWDM Modules

If a DWDM Module is installed onto the Platform, the Setup > Acquisition screen allows
to configure specific parameters for acquisition on DWDM networks:

Figure 17 Acquisition parameters with DWDM module

Wavelength

The acquisition will be carried out on the wavelength selected. Once a wavelength is
selected, the Channel is indicated just before to the wavelength.

Click on Prev10 or Next10 to display the 10 previous / following wavelengths.

Unit

Define the wavelength unit to be used for acquisition: THz or nm.

Dwdm Grid

Select one of the pre-defined Grid to be used for acquisition: 50 GHz / 100 GHz / 200
Even / 200 Odd.

Or

Select User and press the Edit User Dwdm Grid menu key to define a grid.

30 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Defining a grid

1 Once the menu key Edit User Dwdm Grid is pressed, a table displays.

Figure 18 User-defined grid

2 Click on Channel menu key to display either a list of the channels selected, or a

list of all channels available.

3 To configure your own grid, click on one channel (highlighted) and click on Yes or

No to modify the selection.

or

Click on Select all or Unselect all to select all channels of the table, or to unse­lect the selected ones.

4 Once configuration of the grid is completed, press Exit to return to Setup screen.

Configuring the Alarms parameters

In the Setup page, press Alarms softkey (if one parameter is selected in the current
screen, press Top M e n u soft key to display the right menu keys and click on Alarms).

Once the Alarms page is displayed, configure the parameters for applying thresholds to
results displayed.

Threshold

None The alarm function is not active.

User Manual 77000010208 Rev. 012 31

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

User Thresholds can be defined for: Splice Loss / Connector Loss /

Reflectance / Splitter Alarm / Mux/Demux / Slope / Fiber Length Min
and Max / Link Loss Min and Max / ORL.

TIA-568 3 / TIA-568 3.RL35 / ISO/IEC 11801 2002 or 2010 / ISO/IEC 14763-3 2006 or
2014 / Default / G.697/G.98x PON / G.697/IEEE PON

Select one of this parameter to configure the alarm thresholds with
predefined values:

Tab l e 1 Singlemode Module

Reflectan

Splice Loss Connector loss Slope

Default

TIA-568.3

TIA-568.3 RL35 > 0.75 dB > 1.00 dB/km > - 35 dB -

ISO/IEC 11801
(2002)

ISO/IEC 11801
(2010)

G.697/G.98x
PON
G.697/IEEE PON

ISO/IEC 14763-3
(2006)

ISO/IEC 14763-3
(2014)

1. This parameter is not available in OEO-OTDR configuration

> 0.20 dB > 0.50 dB > 1.00 dB/km > - 35 dB < 27 dB No

> 0.75 dB > 1.00 dB/km No

> 0.75 dB > 1.00 dB/km No -

> 0.50 dB > 0.40 dB/km > - 35 dB -

> 0.30 dB

> 0.50 dB No > - 35 dB < 25 dB -

> 0.50 dB > 1.00 dB/km No

> 0.75 dB > 0.40 dB/km No -

1

ce

ORL

No

No

Mux/

Demux

Splitter alarms for Default and G.697/G.98x PON & G.697/IEEE PON

Splitter Alarm Default G.697/G.98x PON / G.697/IEEE PON

1 X 2 > 5.0 dB > 4.2 dB

1 X 4 > 8.0 dB > 7.8 dB

1 X 8 > 11.0 dB > 11.4 dB

-

-

32 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Splitter Alarm Default G.697/G.98x PON / G.697/IEEE PON

1 X 16 > 14.0 dB > 15.0 dB

1 X 32 > 17.0 dB > 18.6 dB

1 X 64 > 21.0 dB > 22.0 dB

Link Loss Max for G.697/G.98x PON & G.697/IEEE PON

Select: No/ Manual or:

• for G.697/G.98x PON: 20 dB (A) / 25 dB (B) / 30 dB (C)

• for G.697/IEEE PON: 23 dB (PX-10) / 26 dB (PX-20)

Tab l e 2 Multimode Modules (not available in SmartOTDR)

Default TIA-568C / ISO/IEC 11801 / ISO/IEC 14763-3

Splice Loss > 0.20 dB > 0.30 dB

Connector Loss > 0.50 dB > 0.75 dB

>0.50 dB for ISO/IEC 14763-3 standard

Slope 850 nm > 3.50 dB/km > 3.50 dB/km

Slope 1300 nm > 1.50 dB/km > 1.50 dB/km

Reflectance > - 35 dB -

ORL < 27 dB -

If results are above those thresholds, they are highlighted in red in the table of results,
and the icon appears at the top right of the screen.

If all the results lie within the thresholds (no result is in red or yellow), they are displayed
in green in the table and the icon is displayed at the right top of the trace.

Configuring the Analysis parameters

In the Setup page, press Analysis softkey (if one parameter is selected in the current
screen, press Top M e n u soft key to display the right menu keys and click on Analysis).

The Analysis Setup page is divided into two parts: the Parameters box and the
Measurement box.

User Manual 77000010208 Rev. 012 33

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Parameters

Section Attenuation

dB/km Displays the section slope in the table of results. When the fiber is

too short to measure the slope accurately, no value is displayed
(empty field).

dB Displays the section Loss in the table of results. With short fiber

where the slope cannot be measured with a good accuracy, the loss
in dB is approximate and displayed.

None The section attenuation and Loss values are not displayed in the

table of results.

Section Length

Define if the distance between the marker of the event and the previous marker must be
indicated in the results table: select Yes or No.

Index of refraction

Choice of group refraction index of the whole fiber.

User Define for each wavelength (1310 SM, 1360-1510 SM, 1550 SM,

1625 SM) a refraction index of 1.30000 to 1.69999. The selection of
an index alters the value of the section AB (actual distance between
cursors A and B).

or,

If the actual distance between the cursors A and B is known, enter its
value under Section AB to establish the index of the fiber. Selection
of this distance causes the display of the indices. The extreme
distance values are given by the index values (1.30000 to 1.70000).

or

You can also enter the Link Length, if it is known, using the Numeric
keypad.

Predefined It is possible to choose one of the predefined values given for certain

cables. The corresponding indices given in the table below are
repeated on the screen.

34 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Figure 19 Predefined index values (Single Mode)

Wavelength (nm) 1310 SM 1360 - 1510 SM 1550 SM 1625 - 1650 SM

Generic G652 G657 1.46750 1.46800 1.46800 1.46850

Generic G653 G655 1.46750 1.46800 1.46800 1.46850

ATT SM 1.46600 1.46700 1.46700 1.46700

Corning SMF-28 1.46750 1.46810 1.46810 1.46810

Corning SMF-DS 1.47180 1.47110 1.47110 1.47110

Corning SMF-LS 1.47100 1.47000 1.47000 1.47000

Corning-Leaf 1.46890 1.46840 1.46840 1.46900

Draka SMF 1.46750 1.46800 1.46800 1.46850

Draka Longline 1.46700 1.46700 1.46710 1.46750

Draka Teralight 1.46820 1.46820 1.46830 1.46850

Draka Benbright 1.46750 1.46750 1.46800 1.46850

Fitel Furukawa 1.47000 1.47000 1.47000 1.47000

OFS Lucent Allwave 1.46750 1.46750 1.46750 1.46850

Lucent Truewave 1.47100 1.47100 1.47000 1.47000

SpecTran SM 1.46750 1.46810 1.46810 1.46810

Sterlite 1.46700 1.46700 1.46750 1.46750

Sumitomo Litespec 1.46600 1.46600 1.46700 1.47000

Sumitomo Pure 1.46600 1.46600 1.46700 1.47000

Figure 20 Predefined index values (Multi Mode) - Not available in SmartOTDR

Wavelength (nm) 850 MM 1300 MM

Corning 62.5 1.50140 1.49660

Corning 50 1.48970 1.48560

SpecTran 62.5 1.49600 1.49100

Generic 50 1.49000 1.48600

Generic 62.5 1.49000 1.48700

Generic OM1-62/125 1.49600 1.49100

Generic OM2-3- 4 50/125 1.48200 1.47700

User Manual 77000010208 Rev. 012 35

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Scatter coefficient

User Selects for each wavelength, the backscatter coefficient of -99 dB to

-50 dB by increments of 0.1dB. Modification of the backscatter coeffi­cient K changes the measurements of reflectance and ORL.

Auto Backscatter coefficients are selected automatically for each wave-

length.

In Multimode, two predefined scatter coefficients are available:

Generic 50 850 MM - > -66.3 dB

1300 MM -> -73.7 dB

Generic 62.5 850 MM -> -66.1 dB

1300 MM -> -70.3 dB

The default values are given in the paragraph "Reflectance" page 3.

Distance Unit

Define the unit of the distances displayed: km, kfeet, miles, meter, feet, inch.

Results on trace

None the trace alone

All the trace with results and markers.

Graphics the trace with markers only.

If All or Graphics is selected, the reflectometry trace is displayed with a dotted vertical
line set on the end of launch cable (if the Launch Cable is defined in the S
menu) and a dotted vertical line on the end of fiber .

Event Notes

No no display of notes

Notes display of notes entered by the user

Uncertainty display of indicators of the level of confidence in the measurement

1.Available exclusively if Super Expert license is installed

36 User Manual 77000010208 Rev. 012

1

result.

ETUP

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Measurement

Otdr Connector Measurement

This parameter allows to choose if a measurement of the front connector must be
performed when acquisition is launched.

No In the results table, the first line corresponds to the first event

detected.

Yes In the results, the first result corresponds to the front connector

measurement, at 0 meter (estimated value).

Propagation Delay

This parameter allows to define if the propagation delay must be measured (Yes) or not
(No) when acquisition is launched.

Number of Splitters

Once parameter is selected, press Edit Number key to display the numeric keypad and
select the wished value:

None there is no splitter set onto the network.

Discover Auto-detection and identification of PON splitter types.

1 to 3 If the number of splitters if known, select it from the list (from 1

This selection opens a sub menu into which the splitters types must be defined for all
splitters installed.

(not available in Multimode)

splitter to 3 splitters).

Splitters types

Splitter 1: define the splitter type among the list:

– 1x2 / 1x4 / 1x8 / 1x16 / 1x32 / 1x64

– 2x2 / 2x4 / 2x8 / 2x16 / 2x32 / 2x64

Splitter 2 and Splitter 3: define the splitter type among the list:

– 1x2 / 1x4 / 1x8 / 1x16 / 1x32 / 1x64

NOTE

If a splitter number is defined, the Auto acquisition is performed with the best
appropriate pulse width.

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Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Detection

Splice Select if a level of detection for splice must be defined.

Press Edit Number soft key and select a value:

– Enter a min level of detection, from 0.01 to 1.99 dB

– No: no splice detection

– Auto: to automatically detect splice

Reflectance Select if level of detection for reflectance must be defined.

Press Edit Number soft key and select a value:

– Enter a min level of detection, from -98 to -11 dB

– None: no reflectance detection

– All: all reflectances are detected

Ghosts Choice (Yes / No / No Analysis) of whether information relating to

ghosts is to be displayed. If ghosts are displayed, the reflection icon
in the table of results appears dotted and the reflection value is
displayed in brackets on the trace, for example «(R:-50 dB)».

Fiber end Once parameter is selected, press Edit Number key to display the

numeric keypad and select the wished value:

– Auto (recommended): option in which the equipment automatically detects

the end of a fiber.

– > 3 to > 20 dB (steps of 1 dB): threshold of detection of end of fiber.

Bend (not available in Multimode) With any dual or triple-wavelength

measurement module, the user will have access to the macro bend
detection function in the test setup. Each event of the selected wave­lengths will then be compared.

Once parameter is selected, press Edit Number key to display the numeric
keypad and select the wished value:

– None: Bend will not be detected.

– Auto: Bend will be automatically detected.

– Define by user: Enter the bend value (in dB), with direction keys or

numeric keypad.

Mux/Demux Once parameter is selected, press Edit Number key to display the

numeric keypad and select the wished value:

– Auto (recommended): option in which the T-BERD/MTS automatically

detects the mux/demux.

– > 0.50 to > 4.99 dB: threshold of detection of mux/demux.

– None: no mux/demux available.

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Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Event After Fiber End

If Yes, the events after the end of the link are detected.

Tota l L oss

Before evt for a given line on table, the total loss result does not include the

After evt on the table, for a given line, the total loss measurement on the table

1

splice/connector loss of the corresponding line

does include the splice/connector loss of the corresponding line.

1

Configuring the Link parameters

In the Setup page, press Link softkey (if one parameter is selected in the current screen,
press Top M e n u soft key to display the right menu keys and click on Link).

NOTE

The softkey Copy File/Link to all is displayed when one parameter is
selected in the Link or File Setup page and when the Powermeter or Source
function is active.

It allows to apply the Link and File configuration parameters of the current
applications to all the other active Fiber Optic applications (powermeter, and
source).

The information entered in the Link Description window concerns the editing and/or the
modifications of the cable and fiber parameters. When a trace is recalled without recall
of the configuration, the parameters of this trace will be present only in its signature.

Link Description

Fiber Id

Select the parameter Fiber Id and enter a name for the fiber, using the edition keypad.

Fiber Number / Fiber Code

The parameter Fiber Number becomes Fiber Code if, in the Cable Structure window,
the Cable Content parameter is defined on another parameter than Fiber (Ribbon/
Fiber, Tube/Fiber or Tube/Ribbon/Fiber). See page 42.

1.Available exclusively if Super Expert license is installed

User Manual 77000010208 Rev. 012 39

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

The fiber code corresponds to the fiber number if, in the Cable Structure, the parameter
Color coding is defined on No.

The fiber code corresponds to the fiber color if, in the Cable Structure, the parameter
Color coding is defined on Yes.

1 Select the parameter Fiber Number/Fiber Code and modify the parameter using

the left and right direction keys.

The fiber number can be automatically incremented/decremented at each new
file save if it has been configured in the File Setup page (see “Configuring the File

parameters” on page 44).

NOTE

The Fiber Code and the fiber number concatenated with Fiber Name are
interdependent: they are incremented or decremented at the same time.
However, the fiber number remains a number only, while the fiber code is
alphanumerical. Whether it includes a color code or not (see

ture” on page 42
Table 21 on page 40).

Figure 21 Example of incrementation of fiber code

Fiber and cable parameters used in the example:

), it may be composed of one, two or three parts (see figure

“Cable struc-

Fiber Name: ’Fiberx’
Cable Content: ’Tube/Fiber’
Max Tube: 12
Max Fiber: 24
Coding used for the fiber and the tube: TIA

Fiber N Fiber N+1

Color Code Yes No Yes No

<Fiber Name>

<Fiber Code>

Fiberx24 Fiberx24 Fiberx25 Fiberx25

Bl/Aq- 1/24 Gold/Bl 2/1

Change Fiber Nbr

Increment the fiber number is automatically incremented at each new file-save.

Decrement the fiber number is automatically decremented at each new file-save

40 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

User defined Use Edit Number softkey to enter the increment/decrement value for

fiber number.

Note: to decrement the number, enter the sign «-» before the number. Example: -

1.

Min: -999 / Max: 999 / Auto: 0

No the Fiber number must not automatically modified.

Extremities are different

In some cases, it is interesting to save different information for the origin and the
extremity of the cable.

If this option is validated, it is possible, after selecting the extremity to be edited in the

Cable Structure menu, to modify the values specific to the cable (cable name, color

coding, content of the coding), for each of these extremities. See chapter “Cable struc-

ture” on page 42)

To display/modify the data specific to the fiber (name and code), it is necessary to
change direction temporarily. In the "O->E" direction, the information on the origin can
be edited, and in the "E->O" direction, that on the extremity.

1

Cable Id

This parameter allows to enter an identification of the cable, using the Edition menu.

Direction

The direction shows if the acquisition has been made from the origin to the extremity (A­>B) or from the extremity to the origin (B->A). Changing direction makes it possible,
when different extremities are handled, to see the parameters of the fiber for the other
extremity.

Location A

The name of the Location A of the link may be entered here.

Location B

The name of the Location B of the link may be entered here.

1.Available exclusively if Super Expert license is installed

User Manual 77000010208 Rev. 012 41

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Cable structure

This line opens a sub-menu, all the parameters of which can be different for each
extremity.

Figure 22 Cable structure menu

1

NOTE

The Cable Structure window is specific to an extremity. Each struc-ture
keeps its own parameters by default. Modifications made to the one are not
automatically applied to the other. Thus, after the values relating to the origin
have been modified, it is normal not to find these same values entered for
the extremity.

View extremity

If extremities are declared as different (see “Extremities are different”

on page 41), this parameter allows to navigate between the

Extremity and Origin parameters.

Cable Id If the extremities are different, you can specify the cable identification

for the origin and the extremity.

Color Coding Choice of whether or not to apply a color coding to the fiber. This

choice is made at link level, as all the fibers of a given link, for a
given extremity, will be coded the same way. This choice modifies
the result of the <Fiber Code> line. See “Fiber Number / Fiber Code”

on page 39.

Cable content Shows how the color code is to be used (see figure “Cable structure

menu” on page 42):

– Fiber Only the color code of the fiber is proposed (example:

«Gold»)

1.Available exclusively if Super Expert license is installed

42 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

– Ribbon/Fiber The color code of the fiber is preceded by that of the ribbon,

and separated by a ’/’ (example: ’Bl/Or’)

– Tube/Fiber The color code of the fiber is preceded by that of the tube,

and separated by a ’/’ (example: ’Br/Or’)

– Tube/Ribbon/Fiber

The color code of the fiber is preceded by that of the tube,
then by that of the ribbon; the three being separated by a ’/’
(example: ’Br/Bl/Or’). See “Fiber Number / Fiber Code” on

page 39

.

Max tube Shows the maximum number of tubes in the cable for the extremity

selected. This information influences the automatic coding of the
fiber. See “Fiber Number / Fiber Code” on page 39.

Max ribbon Shows the maximum number of ribbons in the cable for the extremity

selected. This information influences the automatic coding of the
fiber. See “Fiber Number / Fiber Code” on page 39.

Max fiber Shows the maximum number of fibers in the cable for the extremity

selected. This information influences the automatic coding of the
fiber. See “Fiber Number / Fiber Code” on page 39.

NOTE

Certain parameters are not valid in the configuration selected. Thus, if no
tube is selected in

Cable Content, all the lines relating to the tube concept

will be deactivated (grayed out in the menu).

Tube Coding, Ribbon Coding, Fiber Coding

The lines Tube Coding, Ribbon Coding and Fiber Coding enable
selection of the color coding of the tube, the ribbon and the fiber from
5 different codes described below: TIA, USER 1, USER 2, USER 3
and USER 4.

Code Definition

The Code Definition line opens a sub-menu, with which the different
color codes possible on the instrument can be displayed and modi­fied.

Five different codes can be managed by the equipment, including a standard code.

The standard code (TIA) may be displayed but it cannot be modified.

The other codes, called by default USER1, USER2, USER3 and USER4, can be entirely
personalized.

– Edited code selects the code for display or modification.

User Manual 77000010208 Rev. 012 43

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

– Code name to give a new name to the code selected, press the key,

which calls up the edit menu.

– View codes displays the color codes 1 to 12, 13 to 24 or 25 to 36.

– Code 1...23 Use the arrow to modify the codes if necessary.

Project Information

Tec hn ic ian Id

Use the arrow to enter the name of the operator carrying out the measurement.

Job Id

Use the arrow to enter a description of the measurement to be performed.

Comment

In contrast to the other data in this menu, the comment is specific to a fiber. This line is
thus used to enter a new comment and not to display it. The comment appears at the
top of the screen, with the other parameters of the fiber.
This comment will remain available for the next acquisition, unless it is deleted. It is also
saved when a trace is saved with a comment.

Configuring the File parameters

The File storage parameters must be also configured, in order to define how the results
traces will be saved onto the equipment.

In the Setup page, press File softkey (if one parameter is selected in the current screen,
press Top Menu soft key to display the right menu keys and click on File).

NOTE

The softkey Copy File/Link to All is displayed when one parameter is
selected in the Link or File Setup page and when the Powermeter or Source
function is active.

It allows to apply the Link and File configuration parameters of the current
applications to all the other active Fiber Optic applications (powermeter, and
source).

44 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Directory configuration

Dir. Naming

Click on Current Directory menu key to select the directory currently selected inthe
explorer for files saving

or

Use the arrow to enter the directory name and path:

In the edition keypad, select the pre-defined parameters available or, press abc
key to enter a name manually for the directory. Then, press Enter to validate.

Example: disk/OTDR/Test

Figure 23 Directory - Edition keypad

or

Press Auto Naming to apply the name by default to the directory:

disk/[Cable_Id]

Press Clear and validate (Enter key) in order to define the [Current directory]
selected as directory for saving measurements.

Dir

This parameter cannot be configured, and display the directory selected/created by
default into which the file(s) will be saved.

User Manual 77000010208 Rev. 012 45

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Result storage

Filenaming

Select Filenaming parameter and press the right arrow key to modify the name of the
file for the result trace.

In the edition keypad, select the pre-defined parameters available or, press abc
key to enter a name manually for the file. Then, press Enter to validate.

Figure 24 Filenaming - Edition keypad (auto)

or

Press Default Filename to apply the name by default to the file:

Fiber

[Cable_Id][Fiber_Num]_[Lambda]_[Direction]

The name of the file is displayed in grey under Filenaming parameter

File Content

In this parameter, select the file content for traces saving:

One Trace in case of traces in overlay, each trace is saved in a distinct file (.sor

extension).

All Traces in case of traces in overlay, all traces are saved in one single file

(.msor extension).

All By Laser in case of traces acquired with different wavelengths, traces are

saved in one file by laser (.msor extension)

46 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

Auto Store

Select Yes to store automatically the trace or traces resulting from each acquisition
according to the filenaming rules.

Select Confirm if alarm = Fail to display a confirmation dialog box if a value exceeds
alarm thresholds, and to be able to choose to save or not the trace.
If no alarm is detected on trace, it is automatically stored.

Report Configuration

A report can be generated from the OTDR results page at the same time as the trace
saving (see “Saving the trace(s) and generating a report” on page 92).

The report configuration is performed form the File Setup page

Report As

Select the report format to be generated: Txt / Pdf or All (pdf + txt format).

Select No if no report must be generated.

Report Layout

This parameter allows to define the report page setting:

Standard in multi-traces display, one report page is generated for each trace.

Consolidated in multi-traces display, one report page is generated for all traces

Report naming

Select Report naming parameter and press the right arrow key to modify the name of
the report file for the result trace.

In the edition keypad, enter a name manually for the file and press Enter to validate.

If no name is entered, the report name by defaut applies: Report_SM/MM-OTDR.

Include Microscope Image

In the report page, an image of the scope test result can be displayed on the upper part
of the report. Select Yes to include the scope test result image into the report.

User Manual 77000010208 Rev. 012 47

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

NOTE

This parameter is not available if the report format selected is a Txt file.

Configuration in Test Auto mode

The Test Auto key imposes the parameters for acquisition, measurement and display
of results defined as default settings in factory.

ACQUISITION Acquisition Laser All

Acquisition Auto

Time Auto

Smart Acq No

OTDR Connector Test Yes & Cont

Launch Cable Launch Cable End No

Launch Cable Start No

ALARMS Alarms Thresholds None

ANALYSIS Parameters Section Attenuation dB/km

Section Length Yes

Index of Refraction G652 G657

Scatter Coefficient Auto

Results on trace Graphics

Measurement OTDR Connector Meas. No

Number of Splitters None

Splice Auto

Reflectance All

Ghost No

Fiber End Auto

Bend Auto

Mux/Demux Auto

48 User Manual 77000010208 Rev. 012

Chapter 4 Configuring the reflectometry test

Directory into
which file will be
saved

Configuring the test in Expert OTDR

L

INK Link Description Change Fiber Nr Increment

FILE File configuration Filenaming Auto filenaming

Fiber[Cable_Id][Fiber_Num]_[Lambda][Direction]

Auto Store Yes

Saving OTDR configuration in a file

Once File and Measurement parameters have been configured, those parameters can
be kept in memory and saved in a configuration file.

This configuration file can then be recalled in two cases:

• in order to be applied when acquisition in Smart Test mode is performed.

• in order to be recalled for future acquisition in Expert OTDR

To save parameters in a configuration file:

1 If necessary, press S

2 Select one parameter in one of the setup page (acquisition, link..)

3 Press menu key .

An edition keypad displays

4 Enter a name for the configuration file (max. 20 characters).

ETUP to return to Setup page.

Figure 25 Save Configuration file - Edition keypad

NOTE

Configuration file is saved by default in the directory disk/config.

User Manual 77000010208 Rev. 012 49

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

5 Press Enter to validate

A sound is emitted to indicate the file is saved.

The configuration file is saved with the extension .fo_cfg (icon ) and can be
recalled at any time from the Explorer page.

It can be selected in Smart Test (see “Selecting the configuration file” on page 22) or
loaded for Expert OTDR.

Loading an existing OTDR configuration

To load a configuration file previously created or available in the T-BERD/MTS/ Smar­tOTDR and apply parameters to new OTDR Expert tests:

From the File Explorer page

1 Press FILE hard key

2 Select the configuration file desired

3 Press Load > Load Config.

• Press S

You can modify some acquisition or file storage parameters, and save them in a new
configuration file (see “Saving OTDR configuration in a file” on page 49).

ETUP hard key to display the OTDR acquisition parameters saved in the

selected configuration file.

From the Setup page

1 Select one header in either Setup page (Acquisition, Link, File...)

2 Press Load Config. menu key.

The file Explorer page displays

3 Select the configuration file desired

4 Press Load Config. to load the configuration file for acquisition in

mode.

A sound is emitted to confirm the loading.

The Setup screen is displayed again.

50 User Manual 77000010208 Rev. 012

OTDR Expert

NOTE

Configuration file will be
used for Expert OTDR
acquisition only

The main parameters available in the selected configuration file
are displayed in the File signature.

Most of the configuration files are available into the equipment, in disk/
config.

Figure 26 Loading a configuration file

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

User Manual 77000010208 Rev. 012 51

Chapter 4 Configuring the reflectometry test

Configuring the test in Expert OTDR

52 User Manual 77000010208 Rev. 012

5

Chapter5 Launching a reflectometry test

and displaying results

Once the configuration for acquisition and file storage has been defined, the instrument
is ready to launch an OTDR measurement.

Pressing the S
on the MTS/T-BERD or on the SmartOTDR.

This chapter describes the different stages in a reflectometry measurement. It then
describes the functions available on trace(s).

The topics discussed in this chapter are as follows:

• "Performing OTDR acquisitions" page 54

• "Saving results for Smart Test acquisitions" page 62

• "Results display" page 64

• "Advanced functions in Expert OTDR mode" page 80

• "Saving the trace(s) and generating a report" page 92

• "OptiPulses™ option" page 95

TART/STOP key is all that is needed to start or stop an OTDR measurement

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

Performing OTDR acquisitions

Performing an acquisition in Real Time mode

Principle of the Real time mode

Acquisition in real time must not be used if a precise measurement is required because
of the high noise level, but it is sufficient for rapid optimization of a connection and for
observing a fiber in process of utilization.

Performing acquisition in Real Time

To carry out an acquisition in real time:

1 Hold the S

in real time, either in Smart Test or Expert OTDR mode, whatever is the acquisi­tion mode selected.

or

If the Time parameter is defined with Real Time in Setup page in Expert OTDR
mode, press S

or

In the Setup page of the Smart Test mode, press Real Time key (see

Figure 14 on page 23).

The red Testing indicator will go on to show that real time acquisition is in prog-
ress. The trace acquired is displayed in real time.

An indicator of the state of the connection (Good/Bad) is displayed below the
trace:

TART/STOP key down for about three seconds, to launch the acquisition

TAR T/STOP hard key.

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

Tab l e 3 Connection indicator

State Connection

Good

The connection is OK

Bad • There are several connectors close to the external connector of the equip-

ment

• One of the connectors is dirty or badly connected. Replace the launch
cable, make the connection again properly or clean the connector of the
OTDR or of the jumper.

• No fiber is connected.

If the state of the connection is bad, it is still possible to carry out a measurement,
but the results will not be very reliable.

Figure 27 Example of acquisition in Real Time (with Expert OTDR)

Traffic detection

Traffic on the fiber under test is automatically detected and reported.

Press the S
traffic on the fiber and asks you if you wish to continue or not:

• If you click on N

• If you click on Y

TAR T/STOP key to begin the measurement. A message indicates there is

O, the measurement is not launched.

ES, the measurement is performed, despite the traffic.

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

NOTE

If the measurement is validated despite the traffic (key Yes ), the next mea­surement will be automatically performed, even if traffic is still detected on
fiber.

If the measurement is cancelled (key
another time, the box asking if you wish to continue or not is displayed.

The functioning of Traffic Detection is then indicated in the scaled down representation
of trace, on the upper left part of screen .

During an acquisition in real time, several actions can be made on results in progress:
see "Actions on trace during acquisition" page 60.

NO), and the START/STOP pushed

Stopping the real time acquisition

To stop or interrupt an acquisition in real time mode, press the START/STOP key at any
time.

Performing a measurement with Smart Test

The acquisition is carried out with the parameters saved in the Configuration file. It may
be stopped at any time using the S

TAR T/STOP key.

At the end of test, the results page displays.

1 From the Setup page, press Start Acquisition key to launch

measurement (see Figure 14 on page 23).

The red Tes ting indicator goes on to show that the T-BERD/MTS is in process of
acquisition and the screen displays the trace in process of acquisition.

2 The quality of the connection is displayed for a few

seconds (see Table 3 on page 55)

3 Then, a bar graph shows elapsed and remaining acqui-

sition time.

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Chapter 5 Launching a reflectometry test and displaying results

Number of
averages calculated

Elapsed
acquisition time

Total acquisition timeElapsed time

Performing OTDR acquisitions

Figure 28 Acquisition in progress in Smart Test

At the end of the acquisition, a beep is emitted, and the measurements are displayed, in
SLM view, with a dialog box indicating the pass or fail verdict and asking if results must
be saved.

NOTE

During acquisition, the traffic on fiber is automatically detected (see "Traffic

detection" page 55

)

Performing an acquisition with Expert OTDR

In this mode, the equipment carries out a number of averagings defined as a function of
the maximum acquisition time specified in the Acquisition menu, and then terminates the
acquisition.

The acquisition is carried out with the parameters previously selected in the Acquisition
menu. It may be stopped at any time using the S

1 Press the S

TAR T/STOP key to start the acquisition.

The red indicator goes on to show that the product is in process of acquisition and
the screen displays the trace in process of acquisition.

User Manual 77000010208 Rev. 012 57

TAR T/STOP key.

Chapter 5 Launching a reflectometry test and displaying results

Number of averages
calculated

Elapsed acquisition
time

Total acquisition
time

Elapsed
time

Performing OTDR acquisitions

2 The quality of the connection is displayed for a few

seconds (see Table 3 on page 55)

3 Then, a bar graph shows elapsed and remaining acquisition time.

Figure 29 Acquisition in progress with Expert OTDR

At the end of the acquisition, a beep is emitted, the trace is displayed and an automatic
measurement is started.

NOTE

During acquisition, the traffic on fiber is automatically detected (see "Traffic

detection" page 55

)

NOTE

To stop the acquisition, the START/STOP key may be pressed at any time.
Then an automatic measurement is carried out, but some events cannot be
detected (a manual measurement must then be made).

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

Performing an acquisition from Results page

Once the results page is displayed, you can perform a new acquisition modifying the
main acquisition parameters.

Before launching a new OTDR acquisition, make sure the trace(s) dis­played have been previously saved if necessary, as the new acquisi­tion will automatically delete the displayed results.

1 On Results page, in Expert OTDR mode, press the softkey Quick Setup.

The acquisition parameters that can be modified display under the results trace.

Figure 30 Results page and Quick Setup menu (Expert OTDR)

2 Modify the acquisition parameters wished in the displayed menu:

Laser / Acquisition / Range / Pulse / Time: See page 26 and page 27.

3 Once configured, launch the new OTDR test pressing the S

Press again Quick Setup menu key to hide the menu under the trace.

TAR T/STOP hard key.

Multi-wavelength acquisition

If the module possesses several lasers, to perform successive acquisitions on all the
wavelengths:

1 In the S

2 Start the acquisition by pressing the S

ETUP menu, check in Laser line, that several lasers are selected (or select

All if a module with only one OTDR port is used).

TART/STOP button.

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

3 Once the acquisition for the first wavelength is finished, the acquisition for the

following wavelength starts automatically.

or

To stop manually the acquisition for current wavelength, click on Stop Wave-

length. This will allow to automatically start the measurement for the following

wavelength.

The different traces appear in the same window and can be handled similarly to overlaid
traces (see "Overlay trace function" page 88).

Actions on trace during acquisition

During an acquisition, several actions are available on results in progress.

Positioning Cursors A and B

1 Select Cursor A or Cursor B and:

– Set both cursors A & B to control distance between two points.

– Set one cursor A or B to get the distance from one point.

– Set one cursor A or B to zoom on this cursor

Zooming on trace

1 Select Zoom function:

– use the menu key in Smart Test;

– the key in Expert OTDR

2 Use touchscreen or validation key to zoom in and zoom out on trace (see “Zoom

function” on page 76)

Shifting the trace (Expert OTDR and Real Time only)

In Expert OTDR mode or in Real Time, the trace can be shifted vertically or horizontally
during the acquisition:

1 Select Shift function on menu key

2 Use touchscreen or direction keys to shift horizontally or vertically the trace (see

“Shift function (Expert OTDR only)” on page 78)

Displaying Trace or Smart Link page

1 Use the menu key Trace/Smart Link to display either:

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Chapter 5 Launching a reflectometry test and displaying results

Performing OTDR acquisitions

• the acquisition trace in progress and the bar graph of time

• the Smart Link page with exclusively the bar graph of time.

In the case of measurement on several wavelengths, once a measurement is completed
for one wavelength:

• the Trace function allows to display the trace and results table for this wave­length: once Trace is selected, press validation key ( or E

NTER) to pass from

Trace + results table on 1 line to Trace + results table on 4 lines, and vice-versa,

• the Smart Link function allows to display a graphical view of results for this wave­length.

Modifying acquisition parameters (in Real Time mode only)

You can modify the acquisition parameters without returning to the SETUP menu.

1 Press the Acquisition Param key.

2 Use displayed keys to scroll through the possible values of the parameters.

Figure 31 Example of acquisition in Real Time

Zooming on the fiber end (in Real Time mode only)

During a real time acquisition, you can reach the end of the fiber under test at any time:

1 Press Zoom to End menu key.

The display automatically reaches the end of the fiber under test.

The menu key Zoom to End becomes Zoom to Start.

Press Zoom to Start to display the start of the fiber under test.

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Chapter 5 Launching a reflectometry test and displaying results

Saving results for Smart Test acquisitions

Performing measurements during acquisition (Real Time mode only)

The real time mode allows to make Loss, ORL or Reflectance measurement using the
A & B cursors and the key Loss / ORL / Reflect.:

1 Position A & B cursors on the trace

2 Click as many times as necessary on key to get the measurement

between A & B cursors.

Figure 32 Example of loss measurement

Saving results for Smart Test acquisitions

Once the acquisition is completed, the results trace displays, in Smart Link view, with a
dialog box indicating the pass / fail verdict and asking if results must be saved or not:

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Chapter 5 Launching a reflectometry test and displaying results

Saving results for Smart Test acquisitions

Figure 33 Smart Test results and dialog box for file saving

1 Press Yes to save the results in a file.

The Recording Information page displays

Figure 34 Save results in Smart Test mode

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Chapter 5 Launching a reflectometry test and displaying results

Results display

2 Click on one parameter configuration (white background) to modify it using the

edition or numeric keypad displayed:

– Fiber Id: click on the fiber name currently defined to display the edition

keypad and enter a new fiber name.

– Fiber Number; click on the fiber number currently defined to display the

numeric keypad and enter a new fiber number.

– Location A / Location B: click on the location name currently defined to

display the edition keypad and enter a new name.

– Job Id: click on the Job description currently defined to display the edition

keypad and enter a new description.

NOTE

The file is saved automatically by default with the Job Id parameter.

Example: if the Job Id is defined with Test Fiber 1, the otdr filename will be
Test Fiber 1.sor.

3 Once the recording information are defined as wished, select the saving mode

wished:

– Click on FILE ONLY to save exclusively the results trace to the

.sor format

– Click on FILE + PDF to save the results trace in a .sor file and to

generate a pdf report of the results.

Click on BACK to return to results trace without saving the results.

Results display

The traces acquired or recalled from a memory are displayed on the Results page.
According to the mode of acquisition (Expert OTDR or Smart Test), the results page
offers similar functions, but also different functions.

The Smart Test mode displays automatically the Smart Link view after an acquisition.

Smart Link view

Once the results trace is displayed, click on Trace / Smart Link menu key to select the
Smart Link view.

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Chapter 5 Launching a reflectometry test and displaying results

Zone 1

Zone 2

Zone 3

NOTE

The Smart Link view is displayed by default after an acquisition in Smart
Te st .

A screen as the following one is displayed:

Figure 35 SmartLink function

Results display

The screen is divided into three zones:

• Zone 1: Graphical representation of the link, with icons symbolizing the different
events detected.

• Zone 2: Link Table, which gives a summary of results for each wavelength, with
results within/without thresholds in green/red (according to Alarm thresholds
defined in the setup screen).

• Zone 3: Alarms table (if any)

Show the detailed information of one event

The information concerning the event, its type and the alarm thresholds defined for this
event, can be displayed from the SmartLink screen.

1 Select the event for which information must be displayed, on the graphic using

the touchscreen or direction keys.

The event is highlighted in yellow once selected.

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Chapter 5 Launching a reflectometry test and displaying results

Results display

2 Click on the Event Diagnosis menu key.

A small window displays. It describes:

– the event type

– the value above which it is on defect

Figure 36 Event Diagnosis

Event View

1 Click on Event View menu key to display a detailed description of one event

detected on trace.

2 Select the event to be described on graphic (highlighted in yellow).

The corresponding event description is displayed on the Zone 3, with a recall of
alarm threshold for this event:

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Chapter 5 Launching a reflectometry test and displaying results

Figure 37 SmartLink: Event View

3 Click on View Trace to display the selected event in the results table and zoomed

on trace.

NOTE

The event is framed in red if it is above the alarm thresholds defined in the
setup menu.
It is framed in green if it lies within the thresholds.
It is framed in grey if no alarm has been defined in the Setup menu

Results display

Changing the type of an event

Once the Event View is displayed, the type of event can be modified:

1 Select the event to be modified (framed in yellow)

2 Press Event Code menu key

3 Click on the event type to be applied to the selected event:

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Chapter 5 Launching a reflectometry test and displaying results

Results display

Figure 38 Event Code

4 Click on Exit to return to Event View.

5 Click back on Event View menu key to return to Summary screen

or

Click on Trace View menu key to return to trace (and table) results screen.

NOTE

The event modification is automatically applied on trace and in the results
table.

Splitter sub-menus

The Splitter icon is different according to the menu key pressed in the Splitter sub­menus.

Example:

If the menu key is pressed, the icon is displayed

If the menu key is pressed, the icon is displayed.

Moreover, the icon and splitter configuration is different according to the number of
«clicks» on one menu key.

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Chapter 5 Launching a reflectometry test and displaying results

Example with the menu key :

• Click once: the icon is

• Click twice: the icon is

• Click three times: the icon is

• Click four times: the icon is

Click a sixth time to reset the event by default.

Trace View

To display the trace and results table, click on Trace / Smart Link menu key to select
Trace.

Figure 39 Example of results trace with Smart Test

Results display

Click on Assistant softkey to return to Setup Information page.

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Chapter 5 Launching a reflectometry test and displaying results

Results display

Figure 40 Example of results trace with Expert OTDR

• On the upper right side, the alarm icon is displayed (if some alarm thresholds are

defined in the pre loaded configuration file).

Tab l e 4 Alarms display

Fail Indicates that at least one result exceeds the alarm thresholds defined in

the configuration file used for acquisition
Results are displayed in red in table.

Valid Indicates that all the results lie within the thresholds (no result in red/yellow)

Results are displayed in green in the table.

Common functions on Trace View

Display of events on the trace

Each event detected is referenced under the trace by a serial number. The reflectometry
trace is displayed with a dotted vertical line set on the start of launch cable (if the
Launch Cable End parameter is defined in the S

The trace can also be displayed with a dotted vertical line on the end of fiber .

The icon is displayed on trace if the Receive Cable Start parameter has been
defined in the Setup menu.

The results of the measurements of attenuation, reflectance and slope can be marked
on the trace.

The reflectance of a ghost event is displayed in brackets on the trace.

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Chapter 5 Launching a reflectometry test and displaying results

Results display

Criteria for display of an event

An event will be displayed if its attenuation or its reflectance exceeds the corresponding
threshold selected in the S

25). Attenuation and reflectance results for an event will be displayed if they can be

calculated

The reflectance of an event is always measured except when the event causes a satu­rated Fresnel peak or if it is drowned out by noise. In this case, the T-BERD/MTS
displays > to show that the actual reflectance exceeds the value displayed.

ETUP menu (see "Configuring the test in Expert OTDR" page

Results table

Under the trace is displayed the results table with all the events detected during acqui­sition.

Smart Test Mode

In Smart Test,mode, the results table is always displayed under the trace, in Trace
dispay: see Figure 39 on page 69

Once the Trace function is selected via the Trace/SmartLink menu key, press validation
key ( or ENTER) to display the End of fiber and Total Loss values instead of the
results table.

Figure 41 Smart Test - End of Fiber and Total Loss

To return to resuls table display, click on the trace overview (upper left part of the screen)
or select Trace on Trace/Smart Link softkey and press validation key ( or ENTER).

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Results display

Expert OTDR Mode

In ExpertOTDR, once Trace is selected, press validation key ( or ENTER) to pass
from Trace + results table on 1 line to Trace + results table on 4 lines, and vice-versa

The table with one line displayed under the trace gives the type and characteristics of
the event nearest to the cursor.

The 4 lines table gives the type and the characteristics of all the events detected during
the measurement: the 4 first lines displayed correspond to the 4 first events nearest to
the cursor. The line corresponding to the event nearest to the cursor is highlighted. This
highlighting moves if the cursor is moved.

Figure 42 Example of trace and 4 lines table (Expert OTDR)

At the top of the table, a line shows the generic parameters of the fiber: numbers of
events present, total ORL of the link and, in ExpertOTDR mode, reference trace icon (if
trace is the reference trace - see “Reference Trace function” on page 90).

Each event is referenced under the trace by a number which is repeated in the first
column of the table. The table then shows:

• icon symbolizing the type of the event:

Receive cable Start

Launch cable End: the attenuation and distances are measured on the basis of
the corresponding marker.

Non-reflective attenuation (e.g. splice).

Splitter.

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Results display

Mux/Demux

Reflective event. (e.g. connector)

Ghost reflection

Slope of the fiber (when no fault follows the slope).

End of fiber

OTDR connector

Merged Connectors Loss

– Total group loss = loss on last connector

– Loss connector N-1 = 0 dB)

Event marker when a measurement cannot be carried out. If the event to be added
is too close to an existing event, the icon appears on the trace and the table, but no
measurement is carried out: to obtain the results for this event, a manual measure­ment is necessary.

The event underlined in yellow is the one the nearest of the cursor set on trace. To visu­alize an event, click on this event on the table to set the cursor on it onto the trace.

Detailed description of an event

Click on one event icon in the results table to display the event type and the alarm
threshold defined for this event (if Alarms have been defined in the Setup page).

If the value of the event selected exceeds the defined threshold, then the possible
causes for this alarm are described in the window:

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Chapter 5 Launching a reflectometry test and displaying results

Click

Results display

Figure 43 Event description

The following columns are then displayed next to each event icon:

Distance

Loss

Reflect.

Slope
(Expert OTDR only)

Section
(Expert OTDR only)

T. L o ss

The distance of the event from the beginning of the fiber, in
meters (or miles)

The attenuation due to the event, in dB

The reflectance of the event, in dB

The slope before the event, in dB/km (or dB/kft) if it can be
measured

The length of the section = the distance between the marker
of the event and the previous marker.

The total attenuation of the fiber (total loss), in dB

Cursors

The cursors A and B are represented by vertical lines of different colors:

• in a solid line if the cursor is selected.

• in a dotted line if the cursor is not selected.

Positioning the cursor

1 Press the key to active the cursor.

2 Touch the screen on the required location on trace where the active cursor must

be set.

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Chapter 5 Launching a reflectometry test and displaying results

The Cursor function is
not selected

The Cursor function is
selected

You can also use the direction keys and to move the selected cursor along
the trace

Above the trace is shown the 2-points loss measurement between the two cursors,
together with the distance between the two cursors.

The cursors data are displayed exclusively if the Cursor menu key is
active. If another key is active, the display shows help tooltips, differ­ent according to the selected function.

When the cursor function is selected, the keys and move the trace vertically.

Cursors information

The information related to cursors are displayed exclusively when the Cursor function is
selected (menu key selected).

Above the trace are shown the co-ordinates of the points of intersection of the cursors
A and B with the trace, together with the distance between the two points.

Figure 44 Cursors information

Results display

NOTE

The cursors information are displayed in the report when the Cursor function
is selected (active key). If the cursors values must not be displayed in the
report, select another softkey than the Cursor one before performing the
report (softkey Trace or Zoom for example).

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Chapter 5 Launching a reflectometry test and displaying results

Results display

Cursor and Zoom

If the Cursor key is selected, press the validation button ( or ENTER) to perform an
automatic zoom until the fiber end or until the end of the range (Range parameter
defined in the configuration screen).

This will modify the cursors position, which will be positioned automatically at the begin­ning and at the end of the link (taking into account the possible launch cables).

If another key than the key Cursor A / Cursor B is activated when the validation key is
pressed (Trace or Zoom), the cursors’ position is unchanged.

Cursor function not selected

When Cursor menu key is not selected, the upper banner displays information, different
according to the menu key selected:

• If the Trace/Smart Link key is selected, with Trace function valid, the upper
banner indicates that to change the displayed trace, you can click on the banner
or on the right arrow key

• If the Zoom/Shift key is selected, and the Zoom function valid, the upper banner
indicates that to get an automatic or full zoom, you must press validation key (
or E

NTER).

Zoom function

The Zoom function is used to analyze part of the trace in greater detail.

The zoom is centered on the active cursor

The position of the section of trace displayed with respect to the complete trace is repre­sented by a red rectangle on the mini-trace at the top left-hand corner of the screen.

.

Defining a zoom on the trace using the touchscreen or screen
deported on PC

1 Press Zoom or Zoom/Shift softkey to activate the zoom function

– menu key in Smart Test

– menu key in Expert OTDR

2 Press once in one location on the screen, which will represent the upper left

corner of the zoomed area.

The icon is displayed on the screen.

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Chapter 5 Launching a reflectometry test and displaying results

First press

Second press

Zoomed area

3 Press another time on the location which will represent the lower right corner of

the zoom.

Figure 45 Zoom on trace using touchscreen

Defining a zoom level on the trace using direction keys

4 Select Cursor A or B and center it on the zone to be examined

5 Press Zoom softkey.

6 Use the or key to increase or reduce the zoom factor, keeping the selected

cursor centered on screen.

Swapping from an automatic zoom to full trace and vice-versa

The automatic zoom allows to get an optimized display of the trace.

Results display

To apply an automatic or entire zoom on the trace:

1 Press Zoom softkey.

2 Press validation key ( or E

Press again validation key ( or E

NTER) to apply an auto zoom on trace.

NTER) to display the trace in full screen.

Specific functions of the zoom with a touchscreen

With the touchscreen, once the Zoom function is selected on menu key Zoom, you can:

• maintain your finger pressed on screen and shift the traces horizontally or verti-

cally

• position your finger on a cursor and move it on trace maintaining your finger
pressed and moving it toward left or right

• once a zoom is performed, double click on the zoomed zone to undo the zoom

Zooming on the different events in succession

1 Set the cursor on one event

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Chapter 5 Launching a reflectometry test and displaying results

Results display

2 Define a zoom on this event.

3 Click on another event in the results table.

The cursor is automatically positioned on this event, which is always centered on
the screen, keeping the zoom level selected.

Shift function (Expert OTDR only)

The Shift function is used to displace the displayed section of the trace by pressing the
direction keys or directly clicking on the touchscreen.

The horizontal shift is performed maintaining the point of intersection between the trace
and the selected cursor at the same level, scrolling the trace horizontally while following
it vertically, so that it never goes off the screen.

To use this function:

1 Select the zoom factor as described above.

2 Choose cursor A and cursor B position.

3 On the Zoom/Shift key, select Shift.

4 Displace trace manually on touchscreen toward left/right or upward/backward.

or

Use the direction keys to shift the trace in the desired direction.

Display of traces in overlay

• The traces are shown in different colors (the active trace is green).

• The mains acquisition parameters are displayed at the top of the screen.

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Chapter 5 Launching a reflectometry test and displaying results

traces
numbers

Figure 46 Traces in overlay

Selecting one trace from overlaid traces

To make actions on a trace in overlay (move on events, set a cursor...), it must first be
swapped with the active trace. To do this:

1 Press the Trace key

2 Press the direction keys and , as many times as necessary,

until the active trace is displayed in green.
or
Click on the trace numbers in the upper right side of the result page

until the trace desired is selected.
or
Click on the upper part, in Trace information zone to scroll the traces

Results display

NOTE

Actions relative to traces (move cursors, move on events...) are exclusively
done on the active trace (in green), not on the other ones.

Traces display in double acquisition mode

When a double acquisition has been performed, i.e. a short acquisition preceding a stan­dard one (see “Smart Acquisition (not available in Multimode)” on page 28), two traces
are displayed in the same window.

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Chapter 5 Launching a reflectometry test and displaying results

Short acquisition (in
green)

Standard acquisition
(in blue)

Advanced functions in Expert OTDR mode

Figure 47 Traces display in double acquisition mode

The short trace is the one resulting from the short acquisition and stops while the stan­dard one continues until the end of measurement.

Advanced functions in Expert OTDR mode

Several actions on trace displayed can be performed in ExpertOTDR mode only.

Automatic measurement and detection

If the instrument does not detect all the expected events, additional manual measure­ments can be carried out.

To delete all the markers:

1 Press the Advanced key

2 Press the Modify meas.key,

3 Select Delete.

4 Press validation key ( or E

The following procedure is then recommended:

1 By default, the instrument locates the events and proceeds to the measurements.

80 User Manual 77000010208 Rev. 012

NTER)