Agilent/Keysight 81000NI – DIN Connector Adapter

The Agilent/Keysight 81000NI is a DIN connector adapter that enables optical component testing by interfacing test equipment with FC/APC-equipped devices. Part of the 81000xI series, this threaded adapter provides standardized connection and interchangeability across Keysight’s lightwave measurement platforms. The 81000NI supports both physical and non-physical contact configurations for angled and straight connector geometries, delivering reliable performance across R&D and manufacturing test environments.

– Technical Specifications

• Connector Type: FC/APC (Female)
• Ferrule Interface: 2.5 mm metal-jacketed fiber ferrule
• Keying: R-keying with narrow keyway
• Key Slot: 2.00 mm nominal / 2.03 mm (0.08″)
• Physical Dimensions: 14 mm threaded ring
• Durability Rating: >10,000 reconnection cycles

– Key Features

• R-keyed design ensures precise alignment and prevents mating errors
• Threaded ring housing accommodates 2.5 mm ferrules with metal jackets
• Narrow keyway geometry (2.00/2.03 mm) maintains tight mechanical tolerances
• Rated for extended duty cycles in demanding test applications
• Modular design enables rapid adapter swapping without instrument reconfiguration

– Typical Applications

• Optical device characterization in component-level testing
• FC/APC connector interface for lightwave measurement systems
• Manufacturing quality assurance and incoming device validation
• Research and development of optical assemblies and subassemblies

– Compatibility & Integration

The 81000NI integrates with Keysight’s 81000xI adapter series and operates across 816xx and 815xx optical head modules. Threaded configuration supports 8162xx series optical heads (excluding 81627B), 815xx heads, and integrating spheres. Universally compatible with angled and straight connector interfaces across physical and non-physical contact applications.