Exfo EPM-100 850nM Fiber Optic Optical Power Meter

The EXFO EPM-100 is a handheld optical power meter for measuring optical power in fiber optic systems at 850 nm wavelength. It delivers precise power measurements from +10 dBm down to −60 dBm with ±5% ± 10 nW uncertainty and 0.01 dB resolution. The meter supports multiple measurement units (dB, dBm, W) and features a reference function for direct loss calculations. Its universal push-pull interface accepts interchangeable connector adapters—FC, ST, SC, and LC—enabling rapid field connections. The EPM-100 runs on three AA batteries for approximately 300 hours of operation and reaches full specification accuracy after a 15-minute warm-up. Housed in a compact form factor measuring 185 mm × 100 mm × 55 mm and weighing 0.4 kg, it operates across −10 °C to 50 °C and handles 0–95% relative humidity without condensation. The meter integrates with EXFO’s ELS-100 Light Source for attenuation measurements and suits LAN/WAN fiber-optic network testing and troubleshooting.

## Technical Specifications

• **Wavelength:** 850 nm (primary); EPM-100 series supports 1300 nm, 1310 nm, 1490 nm, 1550 nm, and 1625 nm
• **Detector:** Germanium (Ge)
• **Measurement Range:** +10 dBm to −60 dBm
• **Power Uncertainty:** ±5% ± 10 nW
• **Resolution:** 0.01 dB
• **Measurement Units:** dB, dBm, W
• **Warm-up Time:** 0 seconds (basic operation); 15 minutes (full specification)
• **Battery Life:** Approximately 300 hours
• **Battery Type:** Three AA batteries
• **Operating Temperature:** −10 °C to 50 °C
• **Storage Temperature:** −40 °C to 70 °C
• **Relative Humidity:** 0–95% non-condensing
• **Dimensions:** 185 mm × 100 mm × 55 mm
• **Weight:** 0.4 kg

## Key Features

• Universal push-pull connector interface with FC, ST, SC, and LC adapters
• Reference value function for direct loss measurements
• Automatic offset nulling capability
• Compact, portable design for field deployment
• AC adapter support for stationary operation

## Compatibility & Integration

Designed to pair with the EXFO ELS-100 Light Source for fiber-optic link attenuation testing. Applicable to Passive Optical Networks (PON) at 1310 nm, 1490 nm, and 1550 nm wavelengths. Complies with IEC 60825-1 Amendment 2: 2001 and 21 CFR 1040.10 (Class 1M laser product).