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.
