Keysight (Agilent) N4432A Electronic Calibration Module (ECal), 300 kHz to 18 GHz, 4-Port

The Keysight N4432A is a 4-port electronic calibration (ECal) module that delivers NIST-traceable calibration accuracy across 300 kHz to 18 GHz. This solid-state instrument eliminates the need for mechanical calibration kits, reducing connector wear, repair costs, and operator-dependent errors. Single-connection calibration technique on 3- or 4-port configurations transfers factory calibration accuracy directly to Keysight PNA, ENA, PXI VNA, FieldFox, and USB vector network analyzers via USB control interface.

Technical Specifications

• Frequency Range: 300 kHz to 18 GHz


• Ports: 4-port


• Calibration Type: Single-connection, 3- or 4-port calibration


• Accuracy: NIST traceable


• Impedance States: Programmable and highly repeatable solid-state switching


• Operating Temperature: +20 °C to +26 °C


• Humidity: Up to 95% RH at 40 °C, non-condensing


• Control Interface: USB


• Connector Types: Type-N (f) standard; mixed connector options available including 3.5 mm and Type-N configurations

Key Features

• Pre-characterized S-parameter data stored within module acts as transfer standard


• Programmable solid-state switching for repeatable impedance states


• User characterization support - allows re-characterization with adapters or custom fixtures


• Stores up to five user-defined characterizations in addition to factory data


• Significantly reduces calibration time and potential for error


• Minimizes connector wear and associated maintenance costs

Typical Applications

• Manufacturing RF/microwave component and subsystem testing


• Research and development characterization


• Field-deployed VNA measurements and on-site calibration

Compatibility & Integration

• Supported Analyzers: Keysight PNA series, ENA series, PXI VNA, FieldFox, USB VNAs


• Firmware Requirements: PNA series requires firmware revision 2.5 or higher; E5071C ENA supports 9 kHz to 300 kHz operation with firmware version A.09.10 or higher


• Control: Direct USB interface eliminates need for external switching hardware