Anritsu MW910C

The Anritsu MW910C is a portable Optical Time Domain Reflectometer (OTDR) engineered for field testing and maintenance of optical fiber networks. This compact instrument delivers accurate fault detection and loss measurement across fiber spans up to 144 km, combining 1 meter readout resolution with 0.01 dB loss accuracy in a lightweight, battery-backed platform. The MW910C accepts 16 interchangeable optical plug-in units, enabling deployment across multimode and single-mode fiber types at 0.85 µm, 1.31 µm, and 1.55 µm wavelengths, including dual-wavelength configurations. A temperature-controlled laser source ensures stable optical output and wavelength stability, critical for reproducible measurements of transmission loss, fusion splice losses, and connector losses in production, maintenance, and field service environments.

## Technical Specifications

• Measurement range: 144 km
• Readout resolution: 1 m
• Loss readout resolution: 0.01 dB
• Horizontal scales: 25 m/div to 8 km/div (variable)
• Supported wavelengths: 0.85 µm GI, 1.31 µm GI, 1.31 µm SMF, 1.55 µm SMF, 1.31 µm/1.55 µm SMF (dual wavelength)
• Dynamic range: Unit-dependent; varies with selected plug-in module
• Power input: 100, 115, 120, 200, 220, 240 VAC (rear-panel selectable)

## Key Features

• 16-type interchangeable optical plug-in unit compatibility
• Shift function for trace zoom at any location
• Three-point optical masking capability
• Built-in thermal printer for field documentation
• 32-screen memory for measurement setup storage
• Battery-backed memory with ~7-year backup battery lifespan
• Temperature-controlled laser source for output stability
• Self-diagnosis function
• Laser output safety device
• Auto attenuator function
• HELP function
• Built-in LED light source (selected plug-in units)
• Pushbutton wavelength switching (1310 nm/1550 nm with applicable modules)

## Interfaces & Integration

• GPIB: Remote control and data transfer
• Video signal output connector: External display/recording
• SC connector: Plug-in module interface
• External DC operation option available