HP / Agilent N7550A Electronic Calibration Module (ECal), DC-4 GHz, 2-Port

The HP/Agilent N7550A is a 2-port electronic calibration module engineered to deliver fast, accurate, and repeatable VNA calibrations across DC to 4 GHz. This solid-state device stores unique S-parameter data and calculates error terms for the network analyzer, eliminating the need for mechanical calibration kits. Factory calibration is traceable to NIST standards, ensuring metrological integrity in every measurement. A single USB 2.0 micro-connection to compatible analyzers initiates calibration—no external equipment required. The N7550A operates across +15 °C to +35 °C with humidity up to 75%, making it suitable for lab and field environments. Available in multiple connector configurations (3.5 mm or Type-N, in FF, MF, or MM variants), the module integrates with Keysight PNA-X, PNA, ENA, PXI series VNAs and FieldFox handheld instruments. Compact dimensions (77 mm H × 29 mm W × 27 mm D) and lightweight construction support portable measurement workflows. As a value-line product, the N7550A prioritizes cost-effectiveness—replacement is often more economical than recertification.

– Technical Specifications

• Frequency Range: DC to 4 GHz
• Impedance: 50 Ohm
• Port Configuration: 2-Port
• Calibration Method: Electronic impedance standards with stored S-parameter data
• Traceability: NIST
• Interface: USB 2.0 micro
• Operating Temperature: +15 °C to +35 °C
• Relative Humidity: Up to 75%
• Dimensions: 77 mm (H) × 29 mm (W) × 27 mm (D)

– Key Features

• Solid-state impedance standards eliminate mechanical calibration kit dependencies
• Unique S-parameter characterization per module for error-term calculation
• Single-connection calibration workflow via USB 2.0
• Connector options: 3.5 mm (FF, MF, MM) or Type-N (FF, MF, MM)
• User-defined characterizations supported on PNA and ENA Series analyzers
• Compact, lightweight form factor

– Compatibility & Integration

The N7550A operates with Keysight PNA-X, PNA, ENA, PXI series vector network analyzers and FieldFox handheld systems. User characterization capability extends measurement flexibility across PNA and ENA platforms.