The Keysight (Agilent) N4431B RF Electronic Calibration Module automates VNA calibration across 9 kHz to 13.5 GHz using single-connection electronic calibration. This 4-port ECal module eliminates the time and operator error inherent in mechanical calibration methods, delivering NIST-traceable accuracy with highly repeatable impedance states and solid-state switching reliability.
A single USB connection to Keysight PNA, ENA, or FieldFox instruments performs complete 3- or 4-port calibration instantly. The module transfers factory calibration data directly to the analyzer, significantly reducing connector wear and calibration cycle time. Operating across 0 to 55°C, the N4431B maintains stable performance in lab and field environments.
Technical Specifications
• Frequency Range: 9 kHz to 13.5 GHz
• Impedance: 50 ohms
• Port Configuration: 4-port
• Connectors: Available in 3.5 mm, Type-N 50 ohm, and 7-16 DIN configurations (mixed-connector options supported)
• Control Interface: USB
• Operating Temperature: 0 to 55°C
• Dimensions: 19.0 cm × 25.4 cm × 7.6 cm
• Weight: 2.2 kg
– Key Features
• Single-connection calibration for both 3- and 4-port measurements
• NIST-traceable calibration accuracy
• Highly repeatable impedance states via solid-state switching
• Minimal connector wear compared to mechanical kits
• Significantly faster calibration than traditional methods
– Compatibility & Integration
• Supported Instruments: Keysight PNA, ENA, and FieldFox series
• Firmware Requirements: PNA Series Revision 2.5 or higher; ENA Series— for capabilities below 300 kHz
• Calibration Kit Compatibility: 85050, 85052, 85054, 85056, 85057, 85054B, 85056B, 85057B, 85058B, 85059B
• Available Configurations: N4431B-010 (four 3.5 mm), N4431B-020 (four Type-N), mixed-connector options including N4431B-101 (Port A: 3.5 mm) and additional port variants
