The FOTEC M FM310 Fiber Optic Power Meter is a handheld instrument for accurate optical power measurements in fiber optic systems. Built around a Germanium detector, it delivers ±5% (Watts) or ±0.1 dB accuracy across three calibrated wavelengths: 850 nm, 1300 nm, and 1550 nm. The meter is NIST-calibrated and serves installation, maintenance, and troubleshooting workflows with a compact form factor weighing 11 oz.
Technical Specifications
• Detector: Germanium (Ge)
• Calibrated Wavelengths: 850 nm, 1300 nm, 1550 nm
• Measurement Units: dBm, dBu, dB, µW
• Accuracy: ±5% (Watts), ±0.2 dB
• Display Resolution: Selectable 0.1 dB or 0.01 dB; 0.001 dB with FOtest software
• Display: 0.5-inch LCD showing range, calibration wavelength, and low battery indicator
• Temperature Coefficient: 0.1% / °C
• Operating Temperature: −10 to 50 °C
• Storage Temperature: −30 to 60 °C
• Dimensions: 6.1 × 3.7 × 1.3 inches (155 × 94 × 33 mm)
• Weight: 11 oz (315 g) including battery
– Key Features
• Powered by 9V battery (NEDA-1604 equivalent) with 20-hour typical runtime; AC adapter input available
• RS-232 interface via RJ-11 connector at 9600 baud for data acquisition and instrument control
• Modular Fotec adapter system supporting over 60 connector types
• Controls for power, wavelength calibration selection, and measurement range/dB reference setting
– Typical Applications
• Fiber optic network installation and commissioning
• In-service maintenance and power monitoring
• Optical link troubleshooting and loss characterization
• Dual-wavelength testing with Fotec Smart Sources
– Compatibility & Integration
• Works with Fotec Smart Sources for automated dual-wavelength measurements
• Compatible with Fotec P310 printer and FOtest software package (cable provided)
• Integrates with PC-based measurement systems via RS-232 for logging and analysis
