The Anritsu MN924A is a precision optical attenuator designed for single-mode fiber applications requiring accurate signal level management across standard telecommunications wavelengths. It combines step and continuous attenuation control in a compact benchtop form factor, delivering up to 65 dB of attenuation with minimal insertion loss and excellent return loss performance.
## Technical Specifications
• **Model:** Anritsu MN924A
• **Fiber Type:** Single-mode optical fiber
• **Wavelengths:** 1.3 µm and 1.55 µm (1300 nm / 1550 nm)
• **Maximum Attenuation:** 65 dB
• **Attenuation Control:** Step attenuator (10 dB increments: 0, 10, 20, 30, 40, 50, 60 dB) + continuously variable attenuator (0 to 15 dB in 0.5 dB steps)
• **Step Attenuation Accuracy:** ±1.0 dB (10–20 dB), ±2.0 dB (30–50 dB), ±3.0 dB (≥50 dB)
• **Variable Attenuation Accuracy:** ±1.0 dB (0–10 dB), ±2.0 dB (0–15 dB)
• **Insertion Loss:** ≤3.5 dB
• **Return Loss:** ≥10 dB (FC type connector)
• **Input-to-Output Crosstalk:** ≥70 dB (minimum position)
• **Optical Connector:** FC type
• **Dimensions:** 88 mm (H) × 120 mm (W) × 172 mm (D)
• **Weight:** <2.5 kg
## Key Features
• Dual attenuation architecture provides coarse (step) and fine (continuous) control for flexible signal conditioning
• Low insertion loss maintains optical signal quality across the C and L bands
• High crosstalk isolation ensures clean, undegraded optical paths
• FC connectors with standard configuration; Super PC-type connectors available on MN9605A variant for enhanced return loss performance
## Typical Applications
• Fiber optic communication system characterization and testing
• Optical power level calibration and verification
• Signal attenuation in single-mode fiber networks operating at 1.3 µm or 1.55 µm
## Compatibility & Integration
The MN924A operates exclusively with single-mode optical fibers and is configured for the 1.3 µm and 1.55 µm telecommunications windows.
