The pre-owned Yokogawa AQ6375B extends high-resolution spectrum analysis into the extended-NIR band, resolving spectral detail from 1.2 µm to 2.4 µm with 0.05 nm resolution and ±0.05 nm wavelength accuracy locked by an internal reference source. A 55 dB close-in dynamic range, –70 dBm sensitivity and +20 dBm headroom allow one-sweep characterisation of narrow-line DFB lasers, broadband super-continuum sources and high-power EDFAs. Gas-purge ports and an integrated high-order cut filter suppress water-vapour absorption and diffracted-light artefacts, while double-speed sweep mode halves acquisition time in production. Supplied fully tested, freshly calibrated and firmware-current, each unit offers traceable Yokogawa precision and automation-ready USB/LAN/GPIB control at a fraction of new-instrument cost.

Contact Us for a Fast Quote

Interested in an Yokogawa AQ6375B or a similar model?

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Looking for other models? Our inventory changes daily—ask for the latest list of spectrum analyzers and RF equipment.

Why Choose TESTRO?

1. Laboratory-Verified Performance

   Every unit ships with an ISO/IEC 17025 calibration certificate bearing the TESTRO Certified seal, so you know the specifications are not just claimed—they’re proven.

2. Total Transparency

   High-resolution teardown photos and a live video test session let you inspect seals, modules, and real-time performance metrics before you pay.

3. Real Warranty, Real People

   One-year machine warranty, with our engineering team standing by on business days to provide remote assistance for any software or hardware issues.

4. Global Delivery, Built-In Protection

   DHL lanes—arriving at most destinations in just 3–5 days.

5. Flexible, Modern Payments

   Choose traditional T/T or wire transfer, credit card.

6. Open-Door Assurance

   Visit our Shenzhen facility, walk the refurbishment line, and see your equipment on the bench before it leaves our dock.

Founded in 2017 and headquartered in Shenzhen, TESTRO Electronics LLC focuses on the secondary sale and flexible rental of high-end electronic test instruments. The team counts 30 employees and operates a 1,500 m² warehouse and inspection center in Qianhai, Shenzhen.

Industry Background & Resource Sourcing

Over the past two decades, rapid advances in China’s radio-frequency sector have shortened production-line refresh cycles to roughly 3–5 years. Leveraging long-term partnerships with equipment OEMs, research institutes, and calibration labs, TESTRO acquires traceable, well-maintained decommissioned or replacement units. Every instrument undergoes a five-step technical check and third-party calibration before entering stock, ensuring reliable performance data.

Core Services & Delivery Process