Agilent/Keysight 81000VA – Universal Connector Adapter

The Agilent/Keysight 81000VA is an ST connector adapter engineered for seamless integration with Agilent and Keysight optical heads in the 815xxx and 816xxx series. This adapter establishes a reliable interface between ST-connectorized optical fibers and precision optical measurement heads, delivering the connection integrity required for accurate fiber optic testing and characterization. The threaded 5mm optical head interface ensures repeatable positioning and minimal insertion loss, critical for maintaining measurement fidelity across diverse test environments.

Technical Specifications

• Model: 81000VA


• Connector Type: ST (male or female, application-dependent)


• Optical Head Interface: Threaded type for 5mm optical heads


• Compatible Optical Head Series: 815xxx and 816xxx

Key Features

• Precision-engineered interface minimizes fiber misalignment and coupling loss


• Threaded mechanical design ensures repeatable connection with minimal drift


• Part of the modular 81000 series adapter ecosystem, supporting ST, FC/PC/SPC/APC, SC/PC/APC, and LC connector types


• Single-adapter solution for ST-based fiber optic systems

Typical Applications

• Optical fiber insertion loss and return loss measurement


• Spectral and power analysis of single-mode and multimode fibers


• Production testing and field verification of fiber optic assemblies


• Laboratory characterization of optical components and subsystems

Compatibility & Integration The 81000VA integrates directly with Agilent/Keysight 815xxx and 816xxx series optical heads. When broader connector flexibility is required, the 81000 series provides complementary adapters - the 81000FA (FC/PC/SPC/APC), 81000KA (SC/PC/APC), and 81003LA (LC) - all designed for 5mm optical heads. The 81001xx series extends compatibility to both 5mm and 3mm head geometries, enabling system configuration across multiple hardware platforms.