The Anritsu MU100021A is an OTDR module for the MT1000A Network Master Pro series, delivering optical fiber diagnostics across single-mode and multimode platforms. This module operates at 1310 nm, 1550 nm, 850 nm, and 1300 nm, enabling fault location, loss measurement, and reflectance analysis on installed fiber plant. It supports SMF (10/125 µm ITU-T G.652) and MMF (62.5/125 µm GI fiber) with dynamic range to 42 dB on SMF at 1310 nm and 41 dB at 1550 nm.
## Technical Specifications
• **Wavelengths:** 1310 nm (±25/±30 nm), 1550 nm (±25/±30 nm) for SMF; 850 nm (±30 nm), 1300 nm (±30 nm) for MMF
• **Light Source Output:** –5 ±1.5 dBm (CW, 25°C)
• **Modulation Modes:** CW, 270 Hz, 1 kHz, 2 kHz
• **Pulse Width (SMF):** 3 to 20,000 ns (12 selectable widths)
• **Pulse Width (MMF @ 1300 nm):** 3 to 4,000 ns; **@ 850 nm:** 3 to 500 ns
• **Distance Range (SMF):** 0.5 to 300 km; **(MMF):** 0.5 to 100 km
• **Sampling Resolution:** 0.02 to 40 m (11 settings)
• **Maximum Sampling Points:** 250,001
• **Loss Measurement Accuracy:** ±0.05 dB/dB or ±0.1 dB (whichever is greater)
• **Reflectance Accuracy:** SMF ±2 dB, MMF ±4 dB
• **Distance Accuracy:** ±1 m ±3 × measurement distance × 10⁻⁵ ± marker resolution (excluding IOR uncertainty)
• **Event Dead Zone:** 0.8 m; **Backscatter Dead Zone:** 29 dB (IOR = 1.500000)
• **Real-time Sweep Time:** 10.2 sec (Manual, 50 km range, coarse resolution)
• **IOR Range:** 1.300000 to 1.700000 (0.000001 increments)
• **Distance Units:** km, m, kft, ft, mi
## Key Features
• Bi-directional and multi-waveform measurement with simultaneous display
• Fiber Visualizer for Pass/Fail evaluation
• Multi-pulse measurement for high-accuracy event detection
• Macro-bend detection and analysis
• Optical communications signal/connection check function
• Support for long-distance fiber evaluation to 100 km and PON systems up to 128 branches
• Dirty/scratched connector detection via excessive reflectance identification
## Measurement Modes
• OTDR Measurement
• FTTA (Fiber to the Antenna) Measurement
• OLTS (Optical Loss Test Set) Measurement
## Compatibility & Integration
Integrates with MT1000A Network Master Pro mainframe. Compatible with standard single-mode (ITU-T G.652) and graded-index multimode fiber plant.
