Yokogawa AQ6370 Optical Spectrum Analyzer – Expert Repair, Precision Alignment & NIST-Traceable Calibration
We offer professional repair, calibration, and maintenance services for the Yokogawa AQ6370 Optical Spectrum Analyzer (OSA)—a high-performance, full-featured instrument used for precise optical signal analysis across DWDM, passive components, laser characterization, and fiber optic network development. Renowned for its fast sweep speeds, high dynamic range, and exceptional wavelength accuracy, the AQ6370 is a critical tool in advanced R&D, telecom labs, and production environments. If your unit is failing to boot, misreporting wavelengths, or experiencing optical signal issues, we can restore it to factory-grade performance with full diagnostics and NIST-traceable calibration.
Complete Service Workflow
Comprehensive Diagnostic Evaluation
Each AQ6370 unit undergoes detailed testing using calibrated tunable lasers, power meters, and optical sources, focusing on:
Wavelength accuracy and repeatability
Dynamic range and trace stability
Sweep speed, RBW (Resolution Bandwidth), and span functionality
Input port alignment and optical signal strength
Display, touch panel, and interface response
Remote control functionality via GPIB, Ethernet, or USB
Firmware boot-up integrity and menu operations
Common Issues We Repair
No optical signal detection or degraded sensitivity
Incorrect wavelength readings or drift over time
Internal noise floor elevation or trace instability
Slow or failed sweep operation
Boot-up errors, black screen, or frozen UI
Burnt, cracked, or loose FC/APC or SC input connectors
GPIB, USB, or LAN port communication failures
Display flickering, touchscreen non-responsiveness
Fan or power supply failure causing shutdowns or thermal errors
Component-Level Electronics Repair
Our skilled technicians perform deep circuit board-level repair, including:
Replacing failed capacitors, ICs, DC/DC converters, and logic components
Power supply reconditioning for consistent operation
Restoration of detector boards and analog front-end circuitry
Troubleshooting of digital control boards, fan controllers, and backlight circuits
Optical System Cleaning & Realignment
Accurate spectrum analysis relies on a clean, precisely aligned internal optical path. We:
Clean input ports, optical lenses, diffraction gratings, and mirrors
Re-align the monochromator and internal optics to factory standards
Test fiber coupling efficiency and input port signal alignment
Firmware & Self-Test Validation
We verify firmware consistency, update (if applicable), and run internal self-diagnostics to ensure:
Accurate trace generation
Proper operation across all user-selectable measurement ranges
Calibration data integrity and real-time signal processing
NIST-Traceable Final Calibration
After repair, each AQ6370 is calibrated with NIST-traceable reference lasers and optical sources, including:
Wavelength calibration across the full measurement range
Power level linearity and signal accuracy testing
Sweep time and bandwidth verification
A detailed calibration certificate is provided with before-and-after results.
Why Choose Us?
Years of experience repairing Yokogawa AQ6370 series and other AQ-series OSAs (e.g., AQ6317B, AQ6373, AQ6375)
Fast turnaround – typically 3 to 5 business days
Specialized tools for cleaning, alignment, and high-resolution calibration
Warranty on all repair services and a 15-day Right of Return
Global shipping with protective packaging and export documentation
Flexible payments: credit card, PayPal, ACH, or wire transfer
Ideal For:
Fiber optic labs using AQ6370 for DWDM and broadband spectrum analysis
R&D environments requiring certified calibration and traceable test accuracy
Teams experiencing optical instability or hardware failures in their unit
Buyers of used AQ6370 units needing restoration and full validation
Restore Accuracy & Reliability to Your Yokogawa AQ6370 OSA
If your Yokogawa AQ6370 Optical Spectrum Analyzer is failing to operate reliably, delivering inaccurate data, or showing display/interface issues, we can help. Our expert team provides comprehensive service including optical realignment, deep electronics repair, and NIST-traceable calibration to return your unit to high-performance condition.
Contact us today to request a service quote or begin the repair process for your AQ6370.
