The Yokogawa AQ7283A is a dual-wavelength Optical Time Domain Reflectometer engineered for fault location, loss analysis, and fiber length measurement in single-mode optical networks. Operating at 1310 nm and 1550 nm, this modular OTDR delivers dynamic range of 42 dB and 40 dB respectively, with measurement capability to 512 km. The instrument features an 8.4-inch color TFT display, multi-touch capacitive interface, and selectable pulse widths from 3 ns to 10,000 ns, enabling precise characterization of installed fiber infrastructure. Field-deployable with up to 15 hours battery life and internal/external data storage via USB and SD card, the AQ7283A integrates into the AQ7280 platform for customizable test configurations.
Technical Specifications
• Model: AQ7283A (AQ7280 Series)
• Operating Wavelengths: 1310 nm and 1550 nm
• Applicable Fiber: Single Mode (SM) ITU TG652
• Maximum Distance Range: 512 km
• Dynamic Range: 42 dB (1310 nm); 40 dB (1550 nm)
• Event Dead Zone: 0.6 m
• Pulse Width: Selectable from 3 ns to 10,000 ns
• Sampling Resolution: 2 cm minimum
• Measurement Accuracy (Wavelength): ±25 nm (1310 nm and 1550 nm)
• Display: 8.4-inch color TFT LCD, 800 × 600 resolution
• User Interface: Multi-touch capacitive touchscreen with hard-key buttons
• Data Storage: Internal memory with USB and SD card export
• Battery Life: Up to 15 hours (Telcordia standard conditions)
• System Weight: Approximately 15.9 kg
• Dimensions: 24 × 16 × 10 inches
– Key Features
• Dual-wavelength operation for comprehensive fiber characterization
• Precise fault identification and location along fiber spans
• Accurate fiber length measurement and signal loss analysis
• Selectable pulse widths optimize resolution across distance ranges
• 2 cm sampling resolution enables detection of small-scale events
– Typical Applications
• Long-distance networks exceeding 70 km with splitter configurations
• Telecommunications infrastructure testing and maintenance
• Network installation validation and fault diagnostics
• Field deployment requiring extended battery operation
– Compatibility & Integration
The AQ7283A operates as a module within the AQ7280 platform, supporting optional modules including optical power meters, visual light sources, and fiber inspection probes. Note that OTDR and OPM functions cannot operate simultaneously.
