Service & Repair of HP / Agilent 86120C Optical Wavelength Meter

HP / Agilent 86120C Optical Wavelength Meter – Expert Repair, Precision Alignment & NIST-Traceable Calibration

We offer specialized repair, calibration, and maintenance services for the HP / Agilent 86120C Optical Wavelength Meter—a high-precision instrument designed for accurate wavelength and frequency measurement in fiber optic systems. Widely used in optical component testing, DWDM system development, and photonics research, the 86120C is known for its broad wavelength range (1270–1650 nm) and high absolute wavelength accuracy. If your unit is showing wavelength drift, startup errors, or optical instability, our experienced team can restore it to full performance with factory-grade precision and certified calibration.

Complete Repair & Calibration Workflow

Thorough Functional Diagnostics
Each 86120C unit undergoes a comprehensive evaluation to test:

• Wavelength accuracy and resolution across its full operating range

• Internal reference laser output and wavelength locking stability

• Signal detection sensitivity and repeatability

• Input connector performance and optical coupling

• Display and front panel operation

• GPIB, USB, and LAN interface communication

Using calibrated tunable laser sources and optical references, we simulate real measurement conditions to detect issues with internal optics, electronics, and firmware.

Common Issues We Repair

• No signal detection or incorrect wavelength readings

• Wavelength drift or failure to lock to internal reference

• Aging or unstable internal HeNe laser source

• Detector degradation or poor optical signal sensitivity

• Damaged FC/APC input connectors or fiber coupling misalignment

• Firmware crashes, boot-up failures, or UI freezes

• Display screen dimming or malfunction

• Communication port failure (GPIB, USB, LAN)

Component-Level Repair & Replacement
Our technicians perform deep board-level repair, including:

• Replacing failed capacitors, ICs, voltage regulators, and relays

• Repairing power supply modules, laser drivers, and signal processors

• Restoring communication interface boards and internal memory components

Optical Realignment & Laser Tube Replacement
We clean and realign internal optics, including mirrors, detectors, and collimators. If the internal HeNe reference laser is unstable or nearing end-of-life, we replace the tube and realign the optical path to ensure wavelength locking stability.

Firmware & System Verification
We validate and, if needed, reprogram firmware to ensure smooth operation. Internal diagnostics and built-in self-tests are run to confirm all functions perform within factory specifications.

NIST-Traceable Calibration & Performance Verification
Each repaired unit undergoes full NIST-traceable calibration, including:

• Wavelength accuracy checks using certified reference lasers

• Signal detection linearity and repeatability

• Spectral resolution and locking verification
  A full calibration certificate is included with before-and-after performance results.

Why Choose Our Services?

• Years of experience servicing Agilent / HP 86120 series wavelength meters

• In-depth knowledge of internal optics, laser systems, and signal processing

• High repair success rate on both hardware and wavelength accuracy issues

• Fast turnaround – typically 3 to 5 business days

• Warranty on all repair services and a 15-day Right of Return

• Worldwide shipping with professional packaging

• Flexible payment options: PayPal, credit card, ACH, wire transfer

Ideal For:

• Labs and manufacturers working on DWDM, laser sources, and optical R&D

• Telecom operators relying on legacy 86120C units for field calibration

• Organizations restoring used or non-functional wavelength meters

• Test environments needing certified wavelength accuracy and repeatability

Get Your HP / Agilent 86120C Wavelength Meter Fully Restored

If your Agilent 86120C Optical Wavelength Meter is producing unreliable data, showing signs of drift, or no longer locking to reference, we’re here to help. Our expert service includes full diagnostics, optical alignment, HeNe laser servicing, and certified calibration—restoring your unit to factory-grade performance.

Request a quote today to schedule service or get more information about our repair process for the 86120C.