The Yokogawa AQ6370C is a benchtop optical spectrum analyzer covering a wavelength range of 600 to 1700 nm. It is built around a monochromator engineered for world-class optical performance, delivering high wavelength accuracy, high wavelength resolution, and a wide dynamic range so that engineers can characterize optical signals across the telecom and short-wavelength bands. The instrument accepts both single-mode and multimode fiber and displays measured spectra on a built-in 10.4-inch color LCD.

The AQ6370C is applied to the manufacturing of optical devices and optical transmission systems, as well as research and development and a variety of other applications. Listed application areas include optical active devices such as laser diodes, fiber lasers, optical amplifiers, and optical transceivers; optical passive devices such as filters, FBGs, AWGs, WSS, ROADMs, and optical fiber; and optical transmission equipment for DWDM and CWDM. Two specific measurement scenarios are called out: OSNR measurement on DWDM systems, where the built-in WDM analysis function reports peak wavelength, peak level, and OSNR for up to 1024 channels simultaneously, and optical amplifier (EDFA) measurement using the ASE interpolation method to evaluate gain, noise figure, and key parameters for fiber-amplifier characterization.

ValueTronics stocks this equipment in its own 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house by our technicians before it ships, while new units ship factory-sealed exactly as received from the manufacturer.

Compare Other Models in This Series

The AQ6370C is offered in two models that share the same 600 to 1700 nm wavelength range and core optical platform: the Standard model (suffix -10) and the High performance model (suffix -20). Both cover single-mode and multimode fiber and use the same free-space input, interface set, and spectral analysis functions.

The High performance model provides even higher wavelength accuracy and a wider dynamic range than the Standard model. Choosing between them comes down to how tight a wavelength accuracy and how deep a dynamic range your measurements demand, since the two models are otherwise architecturally identical.

Each pre-owned model below is listed on its own dedicated product page with condition-matched pricing, so you can select the exact model and the exact pre-owned condition that fits your application and budget.

The two models differ primarily in wavelength accuracy and dynamic range. Wavelength accuracy in the 1520 to 1580 nm band is ±0.02 nm on the Standard model versus ±0.01 nm on the High performance model, while both share ±0.02 nm from 1580 to 1620 nm, ±0.04 nm from 1450 to 1520 nm, and ±0.1 nm across the full range.

Dynamic range also separates the two: at a 0.05 nm resolution setting and Peak ±1.0 nm, the Standard model is specified at 73 dB while the High performance model reaches a typical 78 dB. The High performance model additionally offers a sharper filter edge for higher close-in dynamic range and a stray-light suppression ratio of typically 80 dB versus 73 dB. The comparison table below summarizes these per-model differences.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

Important: Maximum input power: +20 dBm per channel (full range). Maximum safe input power: +25 dBm total input power.

Important: A connector adapter is required to use the instrument and is supplied as an option (not included in the base unit): the optical input requires an AQ9447 connector adapter and the calibration output requires an AQ9441 universal adapter, available in FC, SC, or ST connector type.

Important: A minimum 1-hour warm-up is required; after warming up, optical alignment adjustment with the built-in light source is required before measurement.

Important: "Typical" or "Typ." values in this datasheet are reference values and are not guaranteed specifications.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.