The Keysight/Agilent/HP 81000UI is a connector interface adapter that converts between APC (Angled Physical Contact) and PC (Physical Contact) fiber optic connectors. It enables signal integrity and compatibility in optical test and measurement systems by providing a reliable physical interface between these two connector geometries, facilitating seamless integration of diverse fiber optic components in laboratory and enterprise environments.
## Technical Specifications
The 81000UI belongs to the Keysight 81000xI series adapter family and features a 14 mm threaded ring with a 2.5 mm metal-jacketed fiber ferrule. The series incorporates keying mechanisms—such as R-keying with 2.03 mm or 2.05 mm keyways—to ensure correct connector alignment and prevent mismatches. The 81000xI series is rated for over 10,000 reconnection cycles, demonstrating durability under repeated mating conditions.
## Key Features
• Converts between APC (angled fiber end-face) and PC (flat fiber end-face) connector types
• 14 mm threaded ring interface compatible with the 81000xI series platform
• 2.5 mm metal-jacketed ferrule for precise optical alignment
• Keying mechanisms ensure correct connector orientation
• Rated for over 10,000 reconnection cycles
• Maintains signal integrity across different connector geometries
## Typical Applications
• Fiber optic power meters and light source connections
• Optical attenuators and test instrumentation
• Cross-platform component integration where connector type compatibility is required
• Laboratory optical systems mixing APC and PC connector standards
## Compatibility & Integration
The 81000UI integrates within the Keysight 81000xI series platform, which accepts adapters for multiple connector topologies including FC, SC, ST, and E-2000. This modularity allows flexible configuration of optical test setups without requiring separate instruments for different connector types.
