The EXFO EUI-89 is a universal connector adapter engineered for FC connectors with narrow key geometry. It enables reliable fiber optic connections across EXFO test instruments by providing tool-free interchangeability between connector types. The adapter integrates a dust cap to prevent contamination and endface access for field cleaning. Part of the EUI series, it supports both angled (APC/EA) and non-angled (UPC/EI) polished connectors, making it suitable for diverse network testing environments.
## Technical Specifications
• **Connector Type:** FC, narrow key (APC/EA and UPC/EI polishing)
• **Interface Type:** Universal Interface (EUI)
• **Insertion Loss:** Typically 0.2 dB
• **Back Reflection Loss:** Typically >65 dB
• **Repeatability:** ±0.1 dB
• **Operating Temperature Range:** 0 °C to 55 °C (32 °F to 131 °F)
• **Storage Temperature Range:** -40 °C to 70 °C (-40 °F to 158 °F)
• **Manufacturing:** Precision machining ensures ferrule concentricity
## Key Features
• Tool-free adapter conversion via push-and-turn mechanism
• Integrated dust cap with easy opening and replacement
• Direct endface access for cleaning and inspection
• Low insertion loss and backreflection for accurate measurements
• Excellent measurement repeatability across multiple connections
## Typical Applications
• Field testing and troubleshooting of fiber optic networks
• Optical power measurements and attenuation analysis
• OTDR (Optical Time Domain Reflectometer) testing
• Light source coupling and signal acquisition
## Compatibility & Integration
Fully compatible with EXFO FTB modules, IOS modules, benchtop units, and handheld instruments. Supported OTDR models include MAX-715B, MAX-720B, MAX-730, MAX-720, FTB-1, and FTB-2. Available as option for FiberBasix 100 and FiberBasix 500 series light sources. Interchangeable with other EUI series adapters (ST, SC, E-2000, DIN 47256, HMS-10/AG, and FC wide key).
