Key facts
- Brand
- EXFO
- Model
- FPM-300
- Category
- Test Set
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2026-11-02
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EXFO FPM-300/FLS-300/FOT-300 Power Meter/Light Source/Optical Loss Test Set User Guide
This user guide provides instructions for operating the EXFO FPM-300 power meter, FLS-300 light source, and FOT-300 optical loss test set. It covers safety precautions, setup, measuring power or loss, using the light source, maintenance, troubleshooting, and warranty information. The devices use Ge or GeX detectors with 10 calibrated wavelengths and support automatic wavelength detection and shutdown after 10 minutes of inactivity.
The guide includes detailed sections on connecting optical fibers, nulling electrical offsets, defining favorite wavelengths, and recalibrating the unit. Safety information for laser use (FLS-300 and FOT-300) and electrical safety is provided. Technical specifications, compliance certifications, and contact information for EXFO service centers are also included.
EXFO FPM-300 specifications
| Battery life (hours) | > 300 |
|---|---|
| Warranty and recommended recalibration interval | 3 years |
| Size (H x W x D) | 185 mm x 100 mm x 55 mm |
| Weight | 0.4 kg |
| Operating temperature | -10 °C to 50 °C |
All EXFO FPM-300 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What wavelengths does the FPM-300 support for PON testing?
It allows testing of passive optical networks (PONs) at 1310 nm, 1490 nm and 1550 nm.
Does the FPM-300 support automatic wavelength recognition?
Yes, it can automatically use the proper calibration parameters when connected to FLS-300 or FOT-300 units.
How do I power the device?
The device can be powered by an AC adapter (for indoor use) or AA alkaline batteries (which automatically take over if the AC adapter is unplugged).
From: EXFO FPM-300/FLS-300/FOT-300 Power Meter/Light Source/Optical Loss Test Set User Guide
What are the typical applications of this equipment?
Typical applications include transmitter power measurements (dBm and W), fiber-link loss testing (dB), component insertion-loss testing (dB), fiber identification with 270-Hz, 1-kHz and 2-kHz signals, fiber installation and maintenance, and FTTx testing of passive optical networks (PONs).
From: EXFO FPM-300/FLS-300/FOT-300 Power Meter/Light Source/Optical Loss Test Set User Guide