EXFO iOLM - Manual (Page 29)

intelligent Optical Link Mapper 23
5 Setting User Preferences
The User Preferences window allows you to set general settings,
identification settings, and select the power meter mode.
Note: The preference settings are user specific.
Defining General Settings
The General tab allows you to enable/disable items such as sound, fiber
section information, file functionalities, whether you save a report upon
saving files and export the file to OTDR Bellcore (.sor) format, and set the
distance unit for the application.
To set general settings:
1. From the Main Menu, tap User Preferences.