EXFO FTB-7000 OTDR for FTB-200 v2 - Manual (Page 111)

Customizing Your OTDR
OTDR 97
Selecting the Distance Units
To select the distance units for your display:
1. From the button bar, press OTDR Setup.
2. From the OTDR Setup window, select the General tab.
3. From the Distance units list, select the item corresponding to the
desired distance units.
4. Press Exit OTDR Setup.
You return to the main window and the newly selected distance unit
appears everywhere units are used.