EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 5)

Contents
OTDR v
9 Analyzing Traces and Events ................................................................... 129
Trace Display and Events Table Description .........................................................................130
Event Pane .........................................................................................................................131
Measure Pane .....................................................................................................................135
Trace Info Pane ...................................................................................................................135
Viewing Test Results ............................................................................................................136
Using Zoom Controls ..........................................................................................................137
Setting Trace Display Parameters ........................................................................................140
Customizing the Event Table ...............................................................................................142
Selecting the Pulse Width Unit ............................................................................................145
Selecting a Trace Display Mode ...........................................................................................146
Displaying or Hiding a Trace ...............................................................................................147
Clearing Traces from the Display .........................................................................................149
Modifying Space Between Traces on the Graph ..................................................................152
Viewing and Modifying Current Trace Settings ...................................................................153
Changing the Loss and Reflectance of Events .....................................................................158
Inserting Events ..................................................................................................................162
Deleting Events ...................................................................................................................164
Changing the Attenuation of Fiber Sections .......................................................................165
Setting the Analysis Detection Thresholds ..........................................................................167
Analyzing or Reanalyzing a Trace ........................................................................................170
Analyzing the Fiber on a Specific Fiber Span .......................................................................172
Enabling or Disabling the Detection of Reflective Ends of Fiber ..........................................174
Entering Comments ............................................................................................................178
Opening Trace Files .............................................................................................................179
Defining a Reference Trace ..................................................................................................183
10 Analyzing the Results Manually .............................................................. 185
Selecting the Attenuation and Loss Values that Will Be Displayed ......................................185
Using Markers .....................................................................................................................187
Getting Event Distances and Relative Powers ......................................................................188
Getting Event Loss (Four-Point and Least-Square Approximation) ......................................189
Getting Attenuation (Two-Point and Least-Square Approximation) ....................................194
Getting Reflectance ............................................................................................................196
Getting Optical Return Loss (ORL) .......................................................................................197
11 Managing Trace Files ............................................................................... 199
Saving a Trace in a Different Format ...................................................................................199
OTDR Trace File Compatibility .............................................................................................204
Copying, Moving, Renaming, or Deleting Trace Files ..........................................................206