EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 246)

Analyzing Bidirectional Traces
232 OTDR
Creating Bidirectional Trace Files
To create a bidirectional trace file:
1. If necessary, clear the window by pressing the Close button on the
button bar.
The application will prompt you if some files have not been saved.
2. From the button bar, press Open.
3. In the Open dialog box, select Create Bidirectional File by Opening
A->B File and B->A File.