The Keysight (Agilent) 42091A is a precision short termination accessory engineered for 4-terminal pair (Kelvin) connections. It establishes a low-impedance reference point essential for accurate calibration and characterization of impedance measurement equipment. By providing a well-defined, repeatable short circuit, the 42091A minimizes residual inductance and resistance at measurement terminals, enhancing accuracy across higher frequencies.
Technical Specifications
• Connection Type: 4-Terminal Pair (Kelvin)
• Nominal Impedance: Near-zero impedance across operational frequency range
• Residual Inductance: Exceptionally low
• Residual Resistance: Extremely low
• Connector Type: Precision-manufactured connectors for 4-terminal pair connections
– Key Features
• Minimizes errors from residual inductance and resistance in test leads and fixtures
• Provides repeatable, well-defined short circuit reference
• Precision manufacturing ensures consistent performance
• Durable construction maintains electrical performance in laboratory and production environments
• Compact, bench-friendly design
– Typical Applications
• Calibration of impedance analyzers
• Calibration of LCR meters
• Residual impedance compensation procedures
• High-frequency impedance characterization
– Compatibility & Integration
The 42091A is designed for impedance analyzers and LCR meters employing 4-terminal pair measurement techniques. Its legacy Agilent branding indicates compatibility with older model test instruments utilizing this connection architecture.
