The Yokogawa AQ7286H is a single-mode fiber OTDR engineered for precise fault location, attenuation measurement, and loss characterization across extended fiber spans. Operating at 1310 nm, 1550 nm, and 1625 nm, this instrument delivers dynamic ranges of 42 dB, 40 dB, and 39 dB respectively, with measurement cycles between 30 seconds and 3 minutes. Distance accuracy of ±(0.75 m + measurement distance × 2 × 10⁻⁵ + 2 cm) and loss measurement repeatability of ±0.015 dB (typical) support demanding field and laboratory applications.
Technical Specifications
Optical Performance
• Wavelengths: 1310 nm, 1550 nm, 1625 nm
• Dynamic Range: 42 dB (1310 nm), 40 dB (1550 nm), 39 dB (1625 nm)
• Distance Range: 0.2 km to 512 km
• Event Dead Zone: 0.6 m
• Attenuation Dead Zone: 3.5 m (1310 nm), 4 m (1550 nm/1625 nm)
• Pulse Width: 3 ns to 20,000 ns
• Distance Accuracy: ±(0.75 m + measurement distance × 2 × 10⁻⁵ + 2 cm)
• Loss Measurement Accuracy: ±0.025 dB/dB (typical)
• Loss Measurement Repeatability: ±0.015 dB (typical)
• Wavelength Tolerance: ±15 nm standard, ±10 nm optional
• Measurement Time: 30 seconds to 3 minutes
Display & Control
• 8.4-inch color TFT LCD, 800 × 600 pixels, multi-touch capacitive interface
Power & Battery
• Li-ion battery: up to 15 hours operation, 6-hour charge cycle
• AC input: 100–240 VAC, 50–60 Hz
Storage & Connectivity
• Internal: >1000 waveforms
• External: USB 2.0, SD card, Ethernet
• Optical connectors: SC, FC, LC
Environmental & Physical
• Operating: −10°C to 50°C, 0–90% RH (non-condensing)
• Storage: −20°C to 60°C
• Dimensions: 211 mm (W) × 110 mm (H) × 32 mm (D)
• Weight: 420–460 g
• Laser Safety: Class 1M or Class 1
– Key Features
• Tri-wavelength architecture for ITU-T G.654 and G.657 standard compliance
• Extended dynamic range enables testing from short patch cords to long-haul routes
• Field-grade battery endurance supports 15-hour field campaigns
• Multi-connector support (SC/FC/LC) accommodates diverse network topologies
– Typical Applications
• Single-mode fiber characterization and acceptance testing
• In-service fault detection and event location
• Loss budget verification on installed links
• Splice and connector loss assessment
• Network maintenance and troubleshooting
– Compatibility & Integration
USB 2.0 and Ethernet interfaces enable data transfer and remote integration. SD card and internal storage support waveform archiving and offline analysis.
