The Wilcom FM8520 is a compact, handheld optical power meter engineered for accurate testing across singlemode and multimode fiber systems. This field-ready instrument delivers ±0.25 dB accuracy with 0.01 dB resolution, supporting both absolute power (dBm) and relative power (dBr) measurements. The InGaAs detector provides 2 kHz detection capability, while the 4-digit LCD display presents clear real-time readings in demanding field environments.
Technical Specifications
• Measurement Range: +5 dBm to -70 dBm
• Calibrated Wavelengths: 850 nm, 1300 nm, 1310 nm, 1550 nm
• Detector Type: InGaAs
• Accuracy: ±0.25 dB (at 1310 nm, -20 dBm CW, 23°C)
• Resolution: 0.01 dB
• Detection: 2 kHz supported
• Power Units: dBm (absolute), dBr (relative)
• Display: 4-digit LCD
• Dimensions: 160 mm × 83 mm × 33 mm
• Weight: 220 g
• Operating Temperature: -10°C to +40°C
• Storage Temperature: -20°C to +60°C
– Key Features
• Reference store capability for baseline comparisons
• RS232 output enables direct data logging and system integration
• Dual AA battery power supply for extended field deployment
• Auto shut-off function after 5 minutes of inactivity preserves battery life
• Thread-on style adapter caps accept standard Wilcom connector interfaces
– Typical Applications
• Insertion loss testing on installed fiber runs
• Multimode and singlemode power level verification
• Fiber optic link commissioning and acceptance testing
• Field troubleshooting and system characterization
– Compatibility & Integration
The FM8520 accepts Wilcom thread-on style adapter caps (ordered separately) to accommodate various fiber connector types. RS232 connectivity permits integration with external data acquisition systems and automated test platforms.
