Anritsu MN938A Programmable Optical Attenuator
The Anritsu MN938A is a programmable optical attenuator designed for precise control of optical signal power. It is used in testing and measurement applications for fiber optic communication systems and components. This attenuator offers high accuracy, repeatability, and a wide attenuation range.
- Model
- Anritsu MN938A
- Calibration
- Available on request
- Price
- $2,455
- Status
- In stock
- RFQ ref
- MN938A
This unit
The Anritsu MN938A is a programmable optical attenuator engineered for precise control of optical signal power in fiber optic communication testing and measurement applications. It delivers variable attenuation across a 0 to 60 dB range in 0.1 dB increments, supporting dual wavelengths at 0.85 µm and 1.3 µm via switch selection. The unit accommodates 50/125 µm multi-mode fibers and integrates into automated test systems through GPIB control while providing manual adjustment via rotary encoder for operator-driven attenuation setting.
Technical Specifications
Attenuation Range: 0 to 60 dB
Attenuation Step: 0.1 dB
Wavelengths: 0.85 µm and 1.3 µm (switch-selectable)
Fiber Type: Multi-mode (50/125 µm)
Interface: GPIB
Key Features
Switch-selectable wavelength operation for dual-band testing capability
0.1 dB resolution enables fine-grained signal power control
Rotary encoder interface for intuitive manual attenuation adjustment
GPIB connectivity for integration into automated measurement systems and production test environments
Typical Applications
Fiber optic transceiver and module development and characterization
Production testing and in-line signal power verification
Component inspection and optical receiver sensitivity measurements
Multi-mode fiber system validation and performance assessment
Compatibility & Integration The MN938A connects via GPIB for remote programming and monitoring within automated test frameworks. Manual control is supported through the front-panel rotary encoder, permitting standalone operation in development and troubleshooting scenarios.
Specifications
| Parameter | Value |
|---|---|
| Wavelength Range | 0.85 µm and 1.3 µm |
Anritsu MN938A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Anritsu MN938A. Calibration covers attenuation accuracy at 5 or more set values across the full range (0 to rated maximum dB), attenuation linearity, wavelength-dependent attenuation at 1310 nm, 1490 nm, and 1550 nm, insertion loss at minimum attenuation (0 dB position), and polarization-dependent loss (PDL) where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Anritsu MN938A faults: motor and gear mechanism wear (attenuation steps or loss of smooth control), optical port contamination, EEPROM calibration data corruption. Most common faults are motor or gear mechanism wear on variable attenuators causing attenuation steps or loss of smooth control, optical port contamination reducing dynamic range, and EEPROM calibration data corruption on digitally controlled models.
Anritsu MN938A price
This Anritsu MN938A is listed at $2,455. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Anritsu MN938A calibration cost
NIST-traceable calibration for the Anritsu MN938A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers attenuation accuracy at 5 or more set values across the full range (0 to rated maximum dB), attenuation linearity, wavelength-dependent attenuation at 1310 nm, 1490 nm, and 1550 nm, insertion loss at minimum attenuation (0 dB position), and polarization-dependent loss (PDL) where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
