The PM-204A is a handheld optical power meter for field and laboratory deployment across LAN, WAN, CATV, and long-distance optical network environments. Built around an InGaAs detector, it measures optical power, identifies fiber types, quantifies attenuation, and assesses link transmission quality. The meter operates from -50 to +26 dBm with ±5% ± 10 nW accuracy and 0.01 dB resolution across its primary measurement band. A backlit LCD ensures readability in low-light conditions, while onboard tone detection at 270, 1000, and 2000 Hz supports fiber identification. Data logging stores up to 1000 measurement sets; USB Type-C connectivity enables direct transfer to included analysis software. The rugged handheld form factor (6.3″ × 3″ × 1.8″, 270 g) runs on dual AA NiMH batteries, four AAA alkaline cells, or the supplied 6 V AC/DC adapter. Auto power-off preserves battery life during field work.
Technical Specifications
• Detector: InGaAs
• Calibrated Wavelengths: 850, 1300, 1310, 1490, 1550, 1625 nm
• Measuring Range: -50 to +26 dBm
• Accuracy: ±5% ± 10 nW
• Resolution: 0.01 dB (-40 to +26 dBm); 0.1 dB (-50 to -40 dBm)
• Linearity: ±5%
• Tone Detection: 270, 1000, 2000 Hz
• Data Storage: 1000 items
• Operating Temperature: -10°C to +50°C
• Storage Temperature: -20°C to +70°C
• Dimensions: 160 × 76 × 45 mm
• Weight: 270 g
– Key Features
• InGaAs detector with six calibrated wavelengths spanning 850–1625 nm
• Wide dynamic range from -50 to +26 dBm with 0.01 dB resolution in primary band
• Backlit LCD display for visibility across lighting conditions
• Multi-frequency tone detection (270, 1000, 2000 Hz) for fiber tracing and identification
• 1000-item data logger with USB Type-C export to analysis software
• Reference value function for baseline and delta measurements
• Dual power options: internal batteries or 6 V external adapter
• Auto power-off to extend battery runtime
– Typical Applications
• Fiber optic link loss and attenuation measurement
• Cable plant commissioning and acceptance testing
• Field troubleshooting and maintenance in telecom and data networks
• CATV network signal level verification
• Fiber identification and continuity tracing
– Compatibility & Integration
Interchangeable connectors (FC/PC, SC/PC, ST/PC) accept multimode and single-mode fibers. A built-in 2.5 mm universal adapter accommodates standard connector types. Auto-wavelength recognition integrates with Precision Rated Optics Stabilized Laser Sources (LS200 Series) for automated measurement workflows. Included software enables data transfer, logging, and offline analysis via USB Type-C connection.
