The AQ7280 Modular OTDR brings advanced performance, precision, and flexibility to fiber optic testing from production to field. Designed for installation, maintenance, and analysis of fiber optic networks from access to core, it helps users perform fast, reliable measurements with confidence.
Its flexible modular platform supports a wide range of configurations, from standard OTDR testing to live network testing with filtered ports, covering applications such as long-haul, metro, core, and FTTH networks.
For multi-fiber applications, the AQ7280 can be combined with the AQ3550 Optical Switch Box to enable automated testing of up to 12 fibers. Together with intuitive touchscreen operation, long battery life, and more than 40 years of Yokogawa OTDR expertise, the AQ7280 supports efficient, high-quality testing in both production and field environments.


The AQ7280 features an 8.4-inch high-luminance color LCD for clear tracevisibility. Smartphone-like operation helps users access key functions quicklyand operate the instrument smoothly in field, laboratory, and productionenvironments.

The AQ7280 supports up to 15 hours of battery operation, helping userscontinue measurements over long workdays without frequent recharging.
The AQ7280 supports efficient data transfer, PC-based analysis, reporting,and remote operation with application software. AQ7933 OTDR EmulationSoftware helps users display and analyze OTDR waveform data, createreports, and remotely control the OTDR from a PC, streamlining workflowsfrom measurement to documentation.

The AQ7280 can be configured with OTDR modules and optional modules to match a wide range of applications, from field installation and maintenance to fiber manufacturing and R&D.

Optional modules expand the AQ7280 beyond OTDR testing, allowing users to perform multiple optical test tasks on a single platform.

A wide selection of display languages assists users in operating the AQ7280 in their native language. Available languages include, but not limited to: Chinese, Czech, Dutch, English, Finnish, French, German, Italian, Norwegian, Polish, Portuguese, Spanish, Swedish, and Turkish.

Smart Mapper automatically executes multiple measurements and analysis, then displaysnetwork events in an easy-to-understand map view. It helps users identify events quicklyand reduces the need for advanced OTDR trace interpretation.

The AQ7280 supports efficient testing of high-count fiber cables. Multi-FiberMeasurement helps manage measurement results for up to 2000 fibers, while theAQ3550 Optical Switch Box enables automated multi-fiber testing by reducing manualfiber switching.

PON optimized functions support efficient testing and troubleshooting of FTTH/PONnetworks. Fault Locator, Macro Bending Detector, and intermittent connection monitoringhelp users locate fiber breaks, bend loss, and temporary connection issues quickly.

OTDR waveform data and measurement results can be analyzed and reported efficientlyusing built-in analysis functions and application software. This helps streamline theworkflow from measurement to evaluation and documentation.

Optional modules and functions expand the AQ7280 beyond OTDR testing, supporting optical power measurement, light source output, visible fault location, and connector end-face inspection. With the /FST option and a compatible fiber inspection probe, the Fiber Surface Test Function automatically analyzes fiber end-face images and performs PASS/FAIL judgment based on IEC 61300-3-35 compliant or customized criteria.
| Manufacturer | Product name and model number | function | Selected products | ||||
|---|---|---|---|---|---|---|---|
| End face display (standard equipment) | Fiber end face inspection function (optional) | AQ7290 | AQ7280 | AQ1210 | AQ1000 | ||
| Lightel | DI-3000 | ● | ● | ● | 〇 Wired connection only |
× | × |
| Lightel | DI-2000 | ● | ● | ● | ● | × | × |
| Lightel | DI-1000MPO+ | ● Both single-fiber and MPO connectors can be displayed |
● Only single-core connectors can be inspected |
● | ● | ● | × |
| Eternal | FVO-730B-P | ● | ー | ● | ● | ● | × |
It has been confirmed that AQ7280 runs with the following commercially optical fiber inspection probe. For the details of each products, please visit the website of each manufacturer.
Please note that Yokogawa do not guarantee the all operation of the contents posted on each manufacturer's website.
| Model | Num. of λ | Num. of port | Dynamic range (dB) | ||||
|---|---|---|---|---|---|---|---|
| Port 1 (nm) | Port 2 (nm) | ||||||
| 1310 | 1490 | 1550 | 1625 | 1625 | |||
| AQ7282G | 3 | 1 | 38 | 36 | 36 | ||
| AQ7283E | 3 | 2 | 42 | 40 | 40* | ||
| AQ7283K | 4 | 1 | 42 | 38 | 40 | 40 | |
| AQ7285A | 2 | 1 | 50 | 50 | |||
*A built-in cut filter to isolate from communication wavelengths included
| Model | Num. of λ | Num. of port | Dynamic range (dB) | |||
|---|---|---|---|---|---|---|
| Port 1 (nm) | ||||||
| 1310 | 1383 | 1550 | 1625 | |||
| AQ7286A | 2 | 1 | 42 | 40 | ||
| AQ7286H | 3 | 1 | 42 | 40 | 39 | |
| AQ7286J | 4 | 1 | 42 | 39 | 40 | 39 |
This is a license product for adding applicable optional features on to AQ7280 series on your own.
It is necessary to update main unit firmware in advance to R1.07 or later and above in order to apply this license.
| Model | Suffix codes | Descriptions |
| 735050 | -MNT | Monitoring function |
| -SMP | Smart mapper | |
| -FST | Fiber Surface Test Function |

Measures and displays optical power of a light source as an absolute/relative value for testing transmitter/network performance. Measurement results can be saved for reference purposes.
Invaluable test instrument during installation and maintenance.
Calibrated and selectable wavelength setting. Single-mode and Multi-mode measurement ready. Continuous wave and modulated wave detection capability.
Two selections of optical power sensors are available- optical power meter and optical power checker, different on the specs and functions.

Outputs a stable, continuous wave of light for measuring end-to-end attenuation accurately when paired with Optical Power Sensor.
Modulated light function at 270 Hz/1 kHz/2 kHz is also available for fiber identification or continuity check purpose on a live fiber network.

Visible, continuous/modulated red light laser. Invaluable test instrument for checking the continuity of pathcords, launch fibers, or short fiber trunks. Breaks and bendings in fiber can be identified visually as the visible light exits the fiber on such fault events.
*A built-in cut filter to isolate from communication wavelengths included
| Model | Num. of λ | Num. of port | Dynamic range (dB) | |||
|---|---|---|---|---|---|---|
| Port 1 (nm) | ||||||
| 1310 | 1383 | 1550 | 1625 | |||
| AQ7286A | 2 | 1 | 42 | 40 | ||
| AQ7286H | 3 | 1 | 42 | 40 | 39 | |
| AQ7286J | 4 | 1 | 42 | 39 | 40 | 39 |
This is a license product for adding applicable optional features on to AQ7280 series on your own.
It is necessary to update main unit firmware in advance to R1.07 or later and above in order to apply this license.
| Model | Suffix codes | Descriptions |
| 735050 | -MNT | Monitoring function |
| -SMP | Smart mapper | |
| -FST | Fiber Surface Test Function |

Measures and displays optical power of a light source as an absolute/relative value for testing transmitter/network performance. Measurement results can be saved for reference purposes.
Invaluable test instrument during installation and maintenance.
Calibrated and selectable wavelength setting. Single-mode and Multi-mode measurement ready. Continuous wave and modulated wave detection capability.
Two selections of optical power sensors are available- optical power meter and optical power checker, different on the specs and functions.

Outputs a stable, continuous wave of light for measuring end-to-end attenuation accurately when paired with Optical Power Sensor.
Modulated light function at 270 Hz/1 kHz/2 kHz is also available for fiber identification or continuity check purpose on a live fiber network.

Visible, continuous/modulated red light laser. Invaluable test instrument for checking the continuity of pathcords, launch fibers, or short fiber trunks. Breaks and bendings in fiber can be identified visually as the visible light exits the fiber on such fault events.
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Reduced energy, emission of CO2, NOX and SOX about 18% to 33% compared to the previous model. Results of Life Cycle Assessment |
This is a license product for adding applicable optional features on to AQ7280 series on your own.
It is necessary to update main unit firmware in advance to R1.07 or later and above in order to apply this license.
| Model | Suffix codes | Descriptions |
| 735050 | -MNT | Monitoring function |
| -SMP | Smart mapper | |
| -FST | Fiber Surface Test Function |

Measures and displays optical power of a light source as an absolute/relative value for testing transmitter/network performance. Measurement results can be saved for reference purposes.
Invaluable test instrument during installation and maintenance.
Calibrated and selectable wavelength setting. Single-mode and Multi-mode measurement ready. Continuous wave and modulated wave detection capability.
Two selections of optical power sensors are available- optical power meter and optical power checker, different on the specs and functions.

Outputs a stable, continuous wave of light for measuring end-to-end attenuation accurately when paired with Optical Power Sensor.
Modulated light function at 270 Hz/1 kHz/2 kHz is also available for fiber identification or continuity check purpose on a live fiber network.

Visible, continuous/modulated red light laser. Invaluable test instrument for checking the continuity of pathcords, launch fibers, or short fiber trunks. Breaks and bendings in fiber can be identified visually as the visible light exits the fiber on such fault events.
The AQ7280 OTDR offers first-class performance thanks to updated functions, a large capacity battery, and a large user-friendly screen.
Additional benefits that ensure measurement quality and improve work efficiency include:
*1 This includes combinations with the cover bracket instead of OPM (Optical Power Meter)/VLS (Visible Light Source) modules.
The 8.4-inch touchscreen enables intuitive operation. Select the desired function by simply tapping the icon on the main menu.

The hardware for the OTDR units, option modules, and battery cover can be removed and put back using common work tools, even coins, to allow for quick and easy replacements and tweaks even when in the field.


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Multi-touch LCD touchscreen |
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Ethernet port* |
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Hard-key buttons |
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VLS port(VLS module)* |
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OPM/VLS module |
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OPM port(OPM module)* |
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Battery Pack(inside) |
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SD card slot(inside) |
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OTDR unit |
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DC power input |
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OTDR/stabilized light source*/power checker* port |
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OTDR unit with an air cooling fan |
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USB type-B port(Mini-B) |
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USB type-A ports |
*Option |
| Suffix codes | Descriptions |
|---|---|
| -D | UL/CSA Standard |
| -F | VDE Standard |
| -H | Chinese Standard |
| -N | Brazilian Standard |
| -P | Korean Standard |
| -Q | BS/Singaporean Standard |
| -R | Australian Standard |
| -T | Taiwanese Standard |
| -A | Argentine Standard |