Service & Repair of Ando AQ6315B Optical Spectrum Analyzer OSA

Ando AQ6315A & AQ6315B Optical Spectrum Analyzer – Expert Service, Repair & Precision Calibration

We specialize in the repair, maintenance, and calibration of the Ando AQ6315A and AQ6315B Optical Spectrum Analyzers (OSA) — highly regarded instruments used for broadband and high-resolution optical signal analysis. Trusted across telecom, photonics, and R&D industries, these OSAs provide excellent dynamic range, resolution, and spectral accuracy. Whether your unit is showing signs of drift, signal loss, or internal failure, our team of trained technicians can restore full functionality through in-depth diagnostics, optical alignment, and NIST-traceable calibration.

Complete Repair & Calibration Workflow

Initial Evaluation & Functional Testing
Each AQ6315A/B unit is subjected to a detailed evaluation process to test:

• Wavelength accuracy across the 400–1750 nm range

• Optical power detection, noise floor, and sensitivity

• Sweep operation, resolution bandwidth, and trace stability

• Signal detection across wide and narrow span settings

• CRT display or LCD functionality, brightness, and controls

• Front panel response and communication interfaces (GPIB/RS232)

We simulate live optical signals and test each function to identify hidden issues that may not be visible during routine use.

Common Failures We Repair

• No optical signal or inconsistent spectral data

• Inaccurate or drifting wavelength measurements

• Faulty grating motor or sweep mechanism

• Display issues including dead CRT, dimming, or flickering

• Boot failures, system errors, or frozen front panels

• Input connector damage or internal fiber path contamination

• Internal noise floor increase or sensitivity degradation

Component-Level Electronic Repair
Our repair team performs diagnostics and component-level replacement of capacitors, ICs, analog front-end circuits, power supplies, and internal communication modules. We also repair faulty sweep drivers, display circuits, and optical signal amplifiers.

Grating & Optical Path Realignment
Using high-precision tools, we realign the grating and internal monochromator system to correct drift and restore wavelength accuracy. We also clean and recalibrate optical lenses, mirrors, and fiber input ports to reduce internal loss and improve SNR (signal-to-noise ratio).

CRT or Display System Restoration
For units with aging CRT displays, we repair or replace CRT driver boards, restore brightness and contrast levels, and resolve screen flicker or ghosting. We ensure all visual readouts are stable and readable.

Self-Test Validation & Firmware Check
Post-repair, the unit is subjected to internal self-test routines. Where applicable, firmware and EEPROM values are verified or corrected to prevent recurring failures.

NIST-Traceable Final Calibration
Each AQ6315A/B is calibrated using NIST-traceable reference lasers and power sources, including:

• Wavelength accuracy verification

• Optical power level calibration

• Dynamic range and span accuracy testing

• Resolution bandwidth calibration
  A calibration certificate with before/after test results is included.

Why Trust Us?

• Extensive experience with Ando / Yokogawa AQ-series OSAs, including AQ6317B, AQ6370C, and others

• Fast turnaround – typically within 2–4 business days

• High success rate, even with units in non-booting or low-signal condition

• Warranty included with each repair and a 15-day Right of Return

• Secure packaging and worldwide shipping support

• Accept multiple payment methods: credit cards, PayPal, ACH, and wire transfers

Perfect For:

• Optical labs and network equipment vendors needing urgent service

• Technicians troubleshooting irregular test data or signal loss

• Equipment buyers needing calibration and validation of used OSAs

• Businesses extending the life cycle of legacy Ando test instruments

Restore Accuracy and Extend the Life of Your AQ6315A or AQ6315B

If your Ando AQ6315A or AQ6315B Optical Spectrum Analyzer is not performing to expectations — due to optical drift, signal detection issues, or display failure — we’re here to help. Our expert repair and calibration process ensures full restoration to reliable, test-ready condition.

Request a service quote today and let our team professionally restore your Ando spectrum analyzer.