Testing Fiber Links with the Yokogawa AQ7280 Optical Time Domain Reflectometer
Yokogawa AQ7280 is a modular optical time-domain reflectometer used to test fiber links during installation, maintenance and troubleshooting. An OTDR launches optical pulses and analyzes returned light to locate events and estimate loss along a fiber. The measurement module and wavelength selection determine whether AQ7280 fits the fiber type, network segment and test objective.
Define the fiber and test objective
Record whether the link is single-mode or multimode, its expected length, connector type, network role and whether the fiber will be dark or in service. Decide whether the task is acceptance testing, fault location, splice evaluation or routine maintenance. For AQ7280, use these details to choose a compatible OTDR module and wavelength set rather than ordering a main unit without confirming the measurement configuration.
Set up a repeatable trace
Use appropriate launch and receive fibers where required by the test method so near-end and far-end connector events can be assessed. Clean and inspect connectors, set the refractive index and range parameters according to the cable information, and choose pulse width and averaging appropriate to the link. Save the trace and test conditions with the circuit identifier. This helps results from AQ7280 be compared across maintenance visits.
Platform overview
| Item | Details |
|---|---|
| Representative model | AQ7280 |
| Instrument | Modular optical time-domain reflectometer |
| Measurement purpose | Fiber-link event location and loss assessment |
| Configuration | Selectable OTDR modules and wavelength options |
| Applications | Fiber installation, maintenance and troubleshooting |
| Order checks | Fiber type, wavelength, range, connectors, included leads and options |
Interpret events with context
A trace can show reflections, attenuation changes, splice events and end-of-fiber behavior, but interpretation depends on the optical path and test setup. Compare event locations with route drawings and known patch-panel positions before dispatching a repair. For AQ7280, avoid treating a single estimated distance or event classification as proof of a specific physical fault without checking connector conditions and the link documentation.
Choose modules and package options
The AQ7280 is a modular platform with selectable OTDR modules for different wavelength and application combinations. Package and option-coded entries may include items beyond a bare main unit. When requesting AQ7280, specify the required wavelengths, connector interface, test range, launch/receive leads, battery or accessories and whether the instrument will be used for field or laboratory work.
AQ7280 module and package codes
- AQ7280+AQ7282A
- AQ7280-HE/SB
- AQ7282A
Information to include with an enquiry
For a quote on AQ7280, provide the fiber type and length, required wavelength set, connector type, intended test, module or accessory needs and destination. This helps distinguish the modular main unit from a bundled or option-specific configuration.
Keep the exact AQ7280 order code AQ7280 in the equipment and purchasing record.
