The Keysight (Agilent) N4431D is a 4-port electronic calibration (ECal) module for vector network analyzer systems operating from DC to 13.5 GHz. It automates VNA calibration procedures using solid-state switching, eliminating mechanical wear and drift while reducing operator-induced errors. The module delivers full 12-term error correction with high accuracy and repeatability, enabling significantly faster calibration cycles than traditional mechanical methods. Its LXI-compliant Ethernet interface integrates directly with compatible Keysight VNA platforms, making it ideal for production test environments, automated systems, and laboratory settings where calibration speed and consistency are critical.
Technical Specifications
• Frequency Range: DC to 13.5 GHz
• Ports: 4-Port configuration
• Port Connectors: Type-N (Standard)
• Impedance: 50 Ohms nominal
• Interface: LXI-compliant Ethernet
• Calibration Type: Full 12-term error correction
• Operating Temperature: 0°C to 55°C (typical)
• Humidity: Non-condensing
– Key Features
• Solid-state switching architecture eliminates mechanical wear and calibration drift
• Automated procedures reduce setup time and operator error
• High-accuracy, repeatable calibration results
• Fast calibration cycles compared to mechanical alternatives
• LXI Ethernet control for remote operation and integration into automated test systems
– Typical Applications
• High-volume RF component production testing
• Automated test equipment (ATE) environments
• Research and development laboratories
• Network analyzer calibration in manufacturing facilities
– Compatibility & Integration
The N4431D is compatible with Keysight (Agilent) VNA platforms supporting ECal modules, including PNA and ENA series instruments designed for DC to 13.5 GHz operation. Control is accomplished through VNA embedded software or external automation software interfaced via the Ethernet connection.
