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Power Meter — FPM-300


Automatically uses the proper calibration parameters when combined with the FLS-300 or FOT-300 source units.

Technical information

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Key features

  • Highly accurate unit offering 10 calibrated wavelengths and reference values
  • No offset nulling required, reducing measurement time
  • Three-year warranty and recommended calibration interval, for dramatically reduced cost of ownership
  • Autonomy of over 300 hours 
  • Instrument identification available in six languages


  • Power measurement
  • Link-loss characterization

With a high-power option and 10 calibrated wavelengths, the FPM-300 is the most complete, yet simple power meter available. Combined with the FLS-300 or FOT-300 source units, which can transmit with a wavelength-identification digital encrypted protocol, the FPM-300 automatically uses the proper calibration parameters. This auto-wavelength recognition feature reduces the need for communication between the two technicians and decreases the potential for error.

An FTTx Test Solution

This product is part of EXFO's series of FTTx optical test products. It allows for the testing of passive optical networks (PONs) at the three main wavelengths (1310, 1490 and 1550 nm) used in fiber-to-the-home (FTTH) and fiber-to-the-premises (FTTP) networks and complies with the ITU-T G.983 and G.984 Recommendation series and the IEEE 802.3ah standard.

Distant Referencing

Signal encrypting can also give the receiving end information on the power to be used as reference, helping ensure efficient referencing, even when the two units are far apart.

No Offset Nulling

Thanks to its unique design, the FPM-300 Power Meter reduces measurement time in typical measurement situations, as the need for an offset nulling is eliminated.

Related Resources

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This note closely examines the one-cord, two-cord and three-cord reference methods proposed by various standard bodies and when each method should be used. The note also examines the different grades of test cords available and emphasizes the importance of following best practices, such as connector inspection, for optimal accuracy and repeatability.

Last updated: 2016-12-22

FPM-300 Power Meter

Specification sheets

The FPM-300 is an FTTx solution that automatically uses the proper calibration parameters when combined with the FLS-300 or FOT-300 source units.

Last updated: 2015-11-02

EXFO is a global leader in Telecom test and measurement solutions. EXFO leverages 30 years of industry-acclaimed expertise and innovation to address real-world issues faced by our customers in the field.

Last updated: 2015-10-20

Last updated: 2014-10-09


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