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

EXFO FiberBasix EPM-50 Optical Power Meter — 300-Hour Battery, Field-Ready Precision The EXFO FiberBasix EPM-50 is a professional-grade optical power meter trusted by fiber optic technicians worldwide for its exceptional 300-hour battery life, high-accuracy InGaAs detector, and rugged field-ready design. Whether you're performing insertion loss testing on an FTTH network, verifying optical power levels in a data center, or maintaining telecom infrastructure, the EPM-50 delivers reliable, repeatable measurements with 0.01dB resolution and ±5% power uncertainty. Compact at just 500g and powered by standard 3 AA batteries, the EPM-50 is the go-to optical power meter for field technicians who need a dependable, low-maintenance tool that won't run out of power mid-job. Pair it with the EXFO ELS-50 light source for a complete, matched insertion loss test set. Key Features 🔋 300-hour battery life on 3 standard AA batteries — weeks of field use without recharging 🎯 InGaAs detector — high sensitivity and accuracy across SM and MM fiber 📊 0.01dB resolution with ±5% power uncertainty for precise loss measurements 📡 Modulation signal recognition: 270Hz, 1kHz, 2kHz tones — identify signal sources in live networks 📱 Multiple display units: dB, dBm, W — flexible readout for any workflow 🔗 Reference value setting for insertion loss (IL) measurements ⚖️ Ultra-compact: 500g — lightweight enough for all-day field carry 🔌 Compatible with standard fiber connectors for SM and MM fiber types 🤝 Pairs perfectly with the EXFO ELS-50 light source for a complete IL test kit Ideal Applications Fiber optic insertion loss (IL) testing on FTTH/FTTx networks Optical power verification at patch panels, splitters, and splice points Data center fiber infrastructure commissioning and maintenance Telecom network maintenance and troubleshooting CATV / HFC optical power level verification Field acceptance testing for new fiber installations Technical Specifications Detector InGaAs Fiber Types Single-mode (SM) and Multimode (MM) Resolution 0.01 dB Power Uncertainty ±5% Display Units dB, dBm, W Modulation Recognition 270 Hz, 1 kHz, 2 kHz Reference Setting Yes (for insertion loss measurement) Battery 3 × AA batteries Battery Life 300 hours Weight 500 g Power Supply Battery only (3 × AA) Frequently Asked Questions What is the EXFO EPM-50 used for? The EXFO EPM-50 is an optical power meter used to measure optical power levels and perform insertion loss (IL) testing on fiber optic networks. It is commonly used in FTTH/FTTx deployment, data center fiber commissioning, telecom maintenance, and CATV network verification. How long does the EPM-50 battery last? The EPM-50 runs on 3 standard AA batteries and delivers an exceptional 300-hour battery life — far longer than most competing optical power meters. This makes it ideal for extended field deployments without the need for recharging or carrying spare battery packs. Does the EPM-50 support both single-mode and multimode fiber? Yes. The EPM-50's InGaAs detector supports both single-mode (SM) and multimode (MM) fiber, making it versatile for a wide range of fiber optic testing applications. What modulation frequencies does the EPM-50 recognize? The EPM-50 can recognize modulation tones at 270Hz, 1kHz, and 2kHz, allowing technicians to identify signal sources and perform tone-based fiber identification in live or multi-fiber environments. What light source pairs with the EXFO EPM-50? The EPM-50 is designed to pair with the EXFO ELS-50 light source for a complete, matched insertion loss test set. Using matched EXFO equipment ensures calibration consistency and accurate IL measurements. What is the difference between the EPM-53 and EPM-53X? The EPM-53 and EPM-53X are variant models in the EXFO FiberBasix EPM series. Key differences include wavelength range, connector compatibility, and measurement range. Please refer to the variant comparison table or contact us for guidance on which model best suits your application. How accurate is the EXFO EPM-50? The EPM-50 offers 0.01dB resolution and ±5% power uncertainty, providing the measurement accuracy required for professional fiber optic insertion loss testing and optical power verification in both field and lab environments. Is the EXFO EPM-50 suitable for FTTH testing? Yes. The EPM-50 is widely used for FTTH and FTTx fiber testing, including verifying optical power at ONTs, measuring splice and connector loss, and performing end-to-end insertion loss tests on fiber drops and distribution networks.