EXFO iOLM - Manual (Page 106)

Using the Inline Power Meter (Optional on Some Models)
100 iOLM
iOLM Acquisition with Power Meter
iOLM Acquisition with Power Meter
The iOLM and power meter acquisition is performed together to save the
iOLM acquisition results along with the power levels (power meter
acquisition results) in a file for future reference.
The measurements are taken at the wavelength(s) set in the OPM tab.
To perform an iOLM acquisition with power meter:
1. Select the OPM tab.
2. Select the wavelength(s) at which you want to take the power meter
measurements.