EXFO FiberBasix EPM-50 Optical Power Meter | InGaAs, 300-Hour Battery, SM & MM, 0.01dB Resolution

EXFO FiberBasix EPM-50 Optical Power Meter – 300-Hour Battery, High Accuracy, SM & MM

The EXFO FiberBasix EPM-50 is a professional-grade handheld optical power meter from EXFO, designed for reliable insertion loss and optical power measurement in both singlemode and multimode fiber networks. Its standout feature is an extraordinary 300-hour battery life on just 3 standard AA batteries — no charging required, no proprietary battery packs to replace. Combined with an InGaAs detector, 0.01dB resolution, and ±5% power uncertainty, the EPM-50 delivers the measurement accuracy and field reliability that EXFO is known for, in a compact 500g handheld form factor. It is the perfect complement to the EXFO ELS-50 Light Source for complete insertion loss test sets.

Why Choose the EXFO EPM-50?

• 300-Hour Battery Life: Powered by 3 standard AA batteries — over 12 days of continuous operation without battery changes, eliminating charging downtime in the field
• InGaAs Detector: High-sensitivity InGaAs detector for accurate power measurement across singlemode and multimode fiber applications
• 0.01dB Resolution: Fine measurement resolution for precise insertion loss and power level characterization
• ±5% Power Uncertainty: Consistent measurement accuracy across all calibrated wavelengths
• Modulation Signal Recognition (270/1k/2kHz): Identifies modulated light sources for accurate loss measurement in the presence of other light sources on the fiber
• Multiple Display Units: Displays results in dB, dBm, or W — compatible with all standard reporting formats
• Reference Value Setting: Built-in reference value capability for direct insertion loss measurement without manual calculation
• Compact & Lightweight (500g): 189×78×37mm form factor fits easily in a tool bag or jacket pocket
• Perfect Pair with EXFO ELS-50: Designed to work with the EXFO ELS-50 Light Source for a complete, matched insertion loss test set from a single trusted brand

Ideal Applications

• Fiber optic insertion loss testing (with ELS-50 light source)
• Optical power level verification on active fiber links
• FTTH / FTTx network acceptance testing
• Telecom network maintenance and troubleshooting
• Data center fiber infrastructure testing
• Field testing requiring long battery life without charging infrastructure

EPM-50 Model Variants

Technical Specifications

Frequently Asked Questions

Q: What light source pairs with the EXFO EPM-50?
A: The EPM-50 is designed to pair with the EXFO ELS-50 Light Source, which provides stable output at up to three singlemode wavelengths or two multimode wavelengths. Together they form a complete, matched insertion loss test set from EXFO. See our ELS-50 listing for details.

Q: How long does the battery last?
A: The EPM-50 runs on 3 standard AA batteries with over 300 hours of operating time — more than 12 days of continuous use. This eliminates the need for charging infrastructure in the field and avoids the cost of proprietary rechargeable battery packs.

Q: What is the difference between the EPM-53 and EPM-53X variants?
A: The EPM-53 has a measurement range of -60 to +10dBm, suitable for standard singlemode and multimode fiber power measurement. The EPM-53X has a range of -50 to +26dBm, designed for high-power applications such as amplified links or CATV systems. Both share the same InGaAs detector, ±5% uncertainty, and 0.01dB resolution.

Q: Can the EPM-50 measure modulated light sources?
A: Yes. The EPM-50 recognizes modulation frequencies of 270Hz, 1kHz, and 2kHz, allowing accurate loss measurement even when other light sources are present on the fiber.

Q: What warranty does the EXFO EPM-50 come with?
A: For warranty details or support, contact us at info@splicermarket.com.