EXFO iOLM - Manual (Page 46)

Setting User Preferences
40 iOLM
Customizing the Optical Power Meter
Customizing the Optical Power Meter
The OPM tab is available when an inline power meter is available in the
module. This tab allows you to select the power meter mode which affects
the available wavelengths in the OPM tab of the main window.
To customize the Optical Power Meter:
1. From the Main Menu, tap User Preferences.