JDS Uniphase 4100, 2100 User Manual
2100/4100 OTDR Modules
OTDR Modules for T-BERD/MTS-2000 and T-BERD/MTS-4000
Handheld Modular Test Set
User Manual
2100/4100 OTDR Modules
OTDR Modules for T-BERD/MTS-2000 and T-BERD/MTS-4000
Handheld Modular Test Set
User Manual
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User Manual 770000102/08 v
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vi User Manual 770000102/08
Table of Contents
About This Guide xv
Purpose and scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Recycling Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvii
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvii
Chapter 1 Principle of Measurement 1
Principle of reflectometry measurements . . . . . . . . . . . . . . . . . 2
Information yielded by the measurement . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Validity of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Reflectance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Principle of optical power and attenuation measurements . . . . . .4
Power measureme nts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Attenuation measurements (optical link loss) . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2 Starting up 7
Unpacking the device - Precautions . . . . . . . . . . . . . . . . . . . . . . 8
Fitting and removing a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
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Fitting a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Removing a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Universal connectors and adapters . . . . . . . . . . . . . . . . . . . . . . . .10
Adapter types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Switching adapter type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Changing the adapter on a LA OTDR Module . . . . . . . . . . . . . . . . . . . . . . 11
Cleaning universal connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 3 Activating OTDR function 13
Selecting the SmartOTDR™ . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Principle of the SmartOTDR™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Selecting SmartO TDR™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Selecting the OTDR Expert function . . . . . . . . . . . . . . . . . . . . . . .15
Principle of the OTDR Expert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Selecting OTDR Expert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 4 Configuring the reflectometry test 17
Configuring the unit for SmartOTDR™ . . . . . . . . . . . . . . . . . . 18
Selecting the configu ration file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Modifying some parameters before the acquisition . . . . . . . . . . . . . . . . . . 19
Configuring the test in OTDR Expert . . . . . . . . . . . . . . . . . . . . . . .20
Configuring the Acq u is i tio n parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Launch cable pa rameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Configuring the Alarms parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Configuring the Mea s u r e ment parameters . . . . . . . . . . . . . . . . . . . . . . . . . 25
Measurement parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Detection parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuring the Link parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Configuring the file storage parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Configuration in Test Auto mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Saving configuratio n parameters in a file . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Loading an existing configuration file in ExpertOTDR . . . . . . . . . . . . . . . . 34
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Chapter 5 Launching a reflectometry test and displaying results 37
Performing OTDR acquisitions . . . . . . . . . . . . . . . . . . . . . . . . . 38
Performing an acquisit io n in R e al Time mode . . . . . . . . . . . . . . . . . . . . . . 38
Principle of the Real time mode . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Performing acquisition in Real Time . . . . . . . . . . . . . . . . . . . . . . . . 38
Stopping the real time acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Performing a measure ment with SmartOTDR™ . . . . . . . . . . . . . . . . . . . . 40
Performing an acquisit io n wit h O TDR Expert . . . . . . . . . . . . . . . . . . . . . . . 40
Performing an acquisition from Results page . . . . . . . . . . . . . . . . . . . . . . . 42
Multi-wavelength acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Actions on trace du rin g a c q uisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Results display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Common function s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Display of events on the trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Results table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Zoom function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Shift function (OTDR Expert only) . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Display of traces in overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Traces display in double acquisition mode . . . . . . . . . . . . . . . . . . .54
Advanced functions in OTDR Expert mode . . . . . . . . . . . . . . . . . .54
Automatic measurement and detection . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Addition of event s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Manual measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Measurements of slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Measurement of ORL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Measurement of Reflectance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Splice measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Memorization of the po sit io n o f e vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Overlay trace func t io n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Overlaying several traces stored in memory . . . . . . . . . . . . . . . . . . 62
Display of traces in overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Adding traces in overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Swapping overlay traces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Removing a trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Quitting the overlay menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Reference Trace function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Use of the reference trace function in the Result page . . . . . . . . . .63
Using the refe rence trace function in the explorer . . . . . . . . . . . . . . 64
SLM (Smart Link Mapper) option . . . . . . . . . . . . . . . . . . . . . . . . . .65
Show the detailed information of one event . . . . . . . . . . . . . . . . . . . . . . . . 66
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Event View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Changing the type of an event . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
OptiPulses option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Configuring the OTDR acquisition with OptiPulses mode . . . . . . . . . . . . . 68
Results in OptiPulses mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Saving the trace(s) and generating a report . . . . . . . . . . . . . . . . .70
Saving results and creating a report from results page . . . . . . . . . . . . . . . 70
Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Storing OTDR measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Recalling OTDR files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Chapter 6 FTTA-SLM Software option 75
Principle of FTTA-SLM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Acceptance Test in g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Troubleshooting Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Configuring the Reflectometry test for FTTA network . . . . . . . . .78
FTTA setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Alarms paramet e r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
File parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Launching the acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Results page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Trace View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
SmartLink view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Displaying the details of an event . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Event View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Changing the name of an event . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Saving the trace(s) and generating a report . . . . . . . . . . . . . . . . .87
Saving results and creating a report from results page . . . . . . . . . . . . . . . 88
Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Chapter 7 Power meter and Source options of the OTDR Modules 91
Connection to the power meter . . . . . . . . . . . . . . . . . . . . . . . . 92
Configuring the Power meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Configuring the measurement parameters of the power meter . . . . . . . . . 93
Configuring the alarm parameters of the power meter . . . . . . . . . . . . . . . . 94
Activating the Source function . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
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Result page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Result page of the Power meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Table of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Commands of the power meter parameters . . . . . . . . . . . . . . . . . .96
Result page of the Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Performing the power level measurement . . . . . . . . . . . . . . . . . .97
Performing the insertion loss measurement . . . . . . . . . . . . . . . . .98
Setting the zero value o f th e p o wer meter . . . . . . . . . . . . . . . . . . . . . . . . . 98
Carrying out the reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Carrying out the side by side reference . . . . . . . . . . . . . . . . . . . . . . 99
Carrying out the reference in loopback mode . . . . . . . . . . . . . . . . 100
Measurements on the fiber under test . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Storing and reloading results . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
File Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Storing results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Loading results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Chapter 8 FiberComplete Modules 103
General introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Activating the function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Establishing References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Reference stage process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Loopback Referencing method . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Side-by-Side referencing method . . . . . . . . . . . . . . . . . . . . . . . . . 110
Configuring the units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Configuring the acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Configuring the file saving for FiberComplete results . . . . . . . . . . . . . . . . 115
Saving the parameters from FiberComplete configuration . . . . . . . . . . . . 116
Loading a configuration file FiberComplete . . . . . . . . . . . . . . . . . . . . . . . 116
Performing the tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Sending a message to the distant Platform . . . . . . . . . . . . . . . . . . . . . . . 117
Starting the test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Results screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Cable view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Fiber View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Fault Finder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
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OTDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Saving results and generating a report . . . . . . . . . . . . . . . . . . . .122
Saving results and creating a report from results page . . . . . . . . . . . . . . 122
Opening a report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
File management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Storing results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Filenaming convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Chapter 9 File management 127
File Setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Managing tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
File signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
File configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Dir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Rules for naming files (Filenaming parameter) . . . . . . . . . . . . . . . 130
Name of a file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Save mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Auto store . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Change Fiber Nbr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Fiber/Link Descrip tio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Fiber ID and Fiber Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Cable Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Location A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Location B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Comment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
File export (T-BERD/MTS 4000 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Buttons on the right of the screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Explorer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Description of the explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Storage media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Storage media built into the Platform . . . . . . . . . . . . . . . . . . . . . .135
External USB storage media . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Remote T-BERD/MTS and data transfer . . . . . . . . . . . . . . . . . . . .136
Abbreviations for storage media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Directories and files edit function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Saving files from the Explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
User Manual 770000102/08 xii
Table of Contents
Loading files and displaying traces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Simple loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Loading several traces in overlay . . . . . . . . . . . . . . . . . . . . . . . . .137
Load with configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Exporting files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Explorer/Link Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Editing function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Exporting a directory in a txt file . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Generating pdf report(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
Using the Merge key, with the txt/pdf files . . . . . . . . . . . . . . . . . . .141
Sending files by e-mail (T-BERD/MTS 4000 only) . . . . . . . . . . . . . 142
Chapter 10 Technical specifications 143
OTDR modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Characteristics of refle c to metry measurements . . . . . . . . . . . . . . . . . . . . 144
Manual Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Typical specificatio n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Class of the lasers of the OTDR modules . . . . . . . . . . . . . . . . . . . . . . . . 148
OTDR modules measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Technical specifications of the Power meter function on module . .
148
Technical specifications of the Source function on module . . .149
Technical specifications of the FiberComplete modules . . . . . .150
Chapter 11 Options and accessories 151
References of measurement modules . . . . . . . . . . . . . . . . . . 152
OTDR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
FiberComplete module with OTDR function . . . . . . . . . . . . . . . . . . . . . . . 153
FiberComplete module with Fault Finder function . . . . . . . . . . . . . . . . . . 153
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
User manual references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
References of optical connectors and adapters . . . . . . . . . . . . .154
Index 157
User Manual 770000102/08 xiii
Table of Contents
xiv User Manual 770000102/08
About This Guide
The T-BERD/MTS-2000/4000 of JDSU 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 xvi
– “Assumptions” on page xvi
– “Technical assistance” on pagexvi
– “Technical assistance” on pagexvi
– “Conventions” on page xvii
User Manual 770000102/08 xv
About This Guide
Purpose and scope
Purpose and scope
The purpose of this guide is to help you successfully use the T-BERD/
MTS-2000/4000 features and capabilities. This guide includes taskbased instructions that describe how to install, configure, use, and troubleshoot the T-BERD/MTS-2000/4000 with modules.
Assumptions
This guide is intended for novice, intermediate, and experienced users
who want to use the T -BERD/MTS-200 0/4000 ef f ectively and efficiently.
We are assuming that you have basic computer and mouse/track ball
experience and are familiar with basic telecommunicati on concep ts a nd
terminology.
Technical assistance
If you need assistance or have questions related to the use of this
product, call or e-mail JDSU’s Technical Assist ance Center for customer
support.
Table 1 Technical assistance centers
Region Phone Number
Americas
Talcum Products
Europe, Africa, and
Mid-East
Asia and the Pacific
Southeast Asia, Aus-
tralia, and New Zealand
All others 866 228 3762 tac@jdsu.com
xvi
866 228 3762
World Wide: 301 353 1550
+49 (0) 7121 86 1345
(Europe)
+33 (0) 1 30 81 50 60
(JDSU France)
+852 2892 0990
(Hong Kong)
+86 10 6833 7477
(Beijing-China)
User Manual 770000102/08
tac@jdsu.com
hotline.europe@jdsu.com
support.france@jdsu.com
During off-hours, you can request assistance by doing one of the
following:
– leave a voice mail message at the Technical Assistance number in
your region
– e-mail North American Technical Assistance Center, tac@jdsu.com,
or European Technical Assistance Center, support.uk@jdsu.com
– submit your question using our online Technical Assist ance Request
form at www.jdsu.com.
Recycling Information
JDSU 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.
About This Guide
Recycling Information
Conventions
This guide uses naming conventions and symbols, as described in the
following tables.
Table 2 Typographical conventions
Description Example
User interface actions appear in
this typeface.
Buttons or switches that you
press on a unit appear in this
On the Statu s bar, click Start.
Press the ON switch
TYPEFACE.
Code and output messages
appear in this typeface.
User Manual 770000102/08 xvii
All results okay
About This Guide
Conventions
Tab le 2 Typographical conventions (Continued)
Description Example
Text you must type exactly as
shown appears in this type-
face.
Variables appear in this typeface.
Book references appear in this
typeface.
A vertical bar | means “or”: only
one option can appear in a single command.
Square brackets [ ] indicate an
optional argument.
Slanted brackets < > group
required arguments.
Type: a:\set.exe in the dialog box
Type the new hostname.
Refer to Newton’s Telecom
Dictionary
platform [a|b|e]
login [platform name]
<password>
Tab le 3 Keyboard and menu conventions
Description Example
A plus sign + indicates simultaneous keystrokes.
A comma indicates consecutive
key strokes.
Press Ctrl+s
Press Alt+f,s
xviii
A slanted bracket indicates
choosing a submenu from
menu.
On the menu bar, click
Start > Program Files.
Tab le 4 Symbol conventions
This symbol represents a general hazard.
User Manual 770000102/08
About This Guide
Conventions
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 landfill site or as municipal waste, and should be disposed of
according to your national regulations.
Table 5 Safety definitions
WARNING
Indicates a potentially hazardous situati on which, if not avoi ded, could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
User Manual 770000102/08 xix
About This Guide
Conventions
xx
User Manual 770000102/08
Chapter1
Principle of Measurement
1
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 page2
– “Principle of optical power and attenuation measurements” on
page 4
User Manual 770000102/08 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 oth er va ri atio ns i n the ref ract ive i ndex.
Information
yielded by the
measurement
2
Fig. 1 Trace showing typical backscattering
From a backscatter trace it is possible, in particular, to determine the
position of a section of fiber within a li nk. 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.
To locate faults, a reflectometer measures only ti me. 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.
User Manual 770000102/08
Chapter 1 Principle of Measurement
Principle of reflectometry measurements
Validity of
Measurement
Reflectance
UTI-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 refl ections must be limi ted at f iber 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 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 tot al amplitude of the Fresnel
reflection generated and then to apply a conversion f ormula 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)
– 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
User Manual 770000102/08 3
Chapter 1 Principle of Measurement
Laser light
source
Reference
fiber
Link under test
Power meter of the
MTS/T-BERD
2000/4000
1
2
Principle of optical power and attenuation measurements
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 leve l 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
Attenuation
measurements
(optical link
loss)
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.
For measurement of the attenuation of power in a complete link or in
elements such as sections of fiber , connectio ns 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:
Attenuation A
To perform accurate measurements, the following conditions are neces-
sary
– 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 disconnect ed during
the period while measurements are taking place.
(dB)
= P1
(dBm)
- P2
(dBm)
4
User Manual 770000102/08
Chapter 1 Principle of Measurement
Principle of optical power and attenuation measurements
Insertion loss method
1 The power meter is first connected to the laser source via the refer-
ence 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 th e 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 770000102/08 5
Chapter 1 Principle of Measurement
Principle of optical power and attenuation measurements
6
User Manual 770000102/08
Chapter2
Starting up
2
This chapter describes how to start using the MTS/T-BERD.
The topics discussed in this chapter are as follows:
– “Unpacking the device - Precautions” on page 8
– “Fitting and removing a module” on page 8
– “Universal connectors and adapters” on page 10
User Manual 770000102/08 7
Chapter 2 Starting up
Unpacking the device - Precautions
Unpacking the device - Precautions
We suggest that you keep the original pa cking material. It is designed for
reuse (unless it is damaged during shipping). Using t he origi nal p ackin g
material ensures that the device is properly protected during shipping.
If another packaging is used (for returning the equipment for example),
JDSU cannot give warranty on good protection of the equipment.
If needed, you can obtain appropriate packing materials by contacting
JDSU Technical Assistance Center.
Fitting and removing a module
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
8
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
User Manual 770000102/08
T-BERD/MTS 4000, repeat the process if a second small
module must be installed at the back of the platform.
Chapter 2 Starting up
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1a
1a
3a
3a
Captive screws fixing the module(s)
1a
1b
2b
2a
1a
2a
Fitting and removing a module
Fig. 2 Fixing the module to the 2000 Base-Unit
Fig. 3 Fixing the module to the 4000 Base-Unit
User Manual 770000102/08 9
Chapter 2 Starting up
FC Adapter (EUFCAD)
DIN Adapter (EUDINAD)
LC Adapter (EULCAD)
ST Adapter (EUSTAD)
SC Adapter (EUSCAD)
PC or APC Connector
Universal connectors and adapters
Removing a
module
1 Unscrew the two captive fixing screws of the module complete ly (up
to the stop).
2 Remove the two slots of the module from their housing onto the
base.
3 Carefully remove the module ou t of its slo t.
Universal connectors and adapters
OTDR modules may be equipped with a universal connector and adapter
selected at time of order.
Adapter types
JDSU offers 5 different adapters, all compatible with this connector,
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, ST and LC.
adapter type
10
Switching
Fig. 4 5 different types of adapters may be mounted on the
universal connector
In order to switch from an adapter to another, proceed as shown.
User Manual 770000102/08
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