EXFO iOLM - Manual (Page 101)

intelligent Optical Link Mapper 95
9 Using the Inline Power Meter
(Optional on Some Models)
This section will help you use the inline power meter and perform
acquisitions.
Note: The OPM tab will not be available if no inline power meter is available for
your unit.
Understanding the Inline Power Meter
The inline power meter in your module measures the power of the link
through the SM live port, which is also used for iOLM measurements.
Minimum and maximum power threshold values are displayed in the same
window used to display the current power meter value. The Pass/Fail
thresholds wavelength is the same as the current power meter reading.
Note: The inline power meter can be equipped with two-channels for taking the
power meter measurements at multiple wavelengths at once.
When two power meter values are displayed, one for each channel,
according to the wavelength, two sets of minimum and maximum power
threshold values are displayed, one for each channel.