Agilent/Keysight N7551A

The Keysight N7551A is a 2-port electronic calibration module engineered for rapid VNA calibration across DC to 6.5 GHz. This value-line ECal solution replaces mechanical kits with a single-connection design that cuts calibration time by up to 50%. The module communicates with supported analyzers via USB 2.0 micro-interface, with firmware controlling all calibration routines.

Available in Type-N 50 Ω or 3.5 mm connectors in multiple gender configurations (female/male/mixed pairs), the N7551A delivers economy mechanical kit performance in a compact, lightweight form factor. It integrates directly with Keysight PNA-X, PNA, ENA, and PXI series instruments, plus FieldFox handheld analyzers, making it ideal for production environments requiring frequent, traceable calibration.

Technical Specifications

• Frequency Range: DC to 6.5 GHz


• Ports: 2


• Connector Options: Type-N 50 Ω or 3.5 mm


• Connector Configurations:

Type-N: NFF, NMM, NMF (female/male/mixed) - 3.5 mm: 3FF, 3MM, 3MF (female/male/mixed)

Data Interface: USB 2.0 micro

Key Features

• Single-connection calibration design


• Up to 50% faster calibration versus mechanical kits


• Zero warm-up wait time


• Fully traceable electronic standards


• Compact, lightweight form factor

Typical Applications

• High-volume PA/FEM manufacturing


• Massive MIMO testing


• High-speed digital interconnects

Compatibility & Integration Supported instruments: Keysight PNA-X, PNA, ENA, PXI series, and FieldFox handheld analyzers. Firmware-controlled operation via USB 2.0 eliminates manual calibration procedures.