The Keysight N7551A is a 2-port electronic calibration module that accelerates VNA calibration across DC to 6.5 GHz. This compact ECal solution reduces calibration time by approximately 50% versus traditional mechanical kits, delivering zero wait-time calibration through firmware control integrated within supported Keysight instruments. A single USB 2.0 micro connection establishes full two-port calibrated measurements without external control hardware.
Technical Specifications
• Frequency range: DC to 6.5 GHz
• Ports: 2
• Impedance: 50 Ω
• Connectors: 3.5 mm (3FF, 3MF, 3MM) and Type-N (NFF, NMF, NMM)
• Interface: USB 2.0 micro
• Calibration speed: Zero wait time
• Dimensions: 77 × 29 × 27 mm (H × W × D)
• Operating temperature: +15 °C to +35 °C
• Maximum relative humidity: 75% RH
– Key Features
• Dual connector architecture supports both 3.5 mm and Type-N configurations with flexible male/female options
• Fully integrated with instrument firmware—no external calibration software required
• Compact form factor optimized for portable and lab-based VNA deployments
• Cost-effective value-line design reduces capital equipment expense
– Typical Applications
• RF and microwave device characterization requiring rapid calibration cycles
• Field-based network analysis using handheld instruments
• Production test environments where calibration speed impacts throughput
– Compatibility & Integration
The N7551A operates with Keysight PNA-X, PNA, and ENA series VNAs (E5061B, E5063A, E5071C, E5072A, E5080A), PXI modules (M937X, M9485A), and FieldFox handheld analyzers (N9913–N9918, N9923, N9925–N9928, N9950–N9952).
