The Keysight P5025B is a PC-based vector network analyzer operating from 9 kHz to 26.5 GHz, designed for RF and microwave component characterization in laboratory and production environments. This compact, portable 4-port instrument connects via Thunderbolt 3 to a host PC and delivers measurement science and user interface capabilities comparable to Keysight’s benchtop VNAs in a faceless form factor.
Technical Specifications
• Frequency range: 9 kHz to 26.5 GHz
• Number of ports: 4 (expandable to 16 ports via cascading)
• Dynamic range: Up to 137 dB
• Trace noise: 0.0015 dB rms at 10 kHz IFBW
• Input impedance: 50 Ω
• Output power: 10 dBm
• Port connectors: 3.5 mm (f)
• Interface: Thunderbolt 3 (USB Type-C)
– Key Features
• Sweep modes: Linear, Log, Segment, CW, Power, DC source
• Electronic calibration support via Keysight ECal modules
• Option 402 provides second source for intermodulation distortion measurements
• Cascadable architecture allows multiport calibrated measurements by combining multiple units
• Single PC can control up to four P50xxB VNAs for parallel operation
• No internal data storage; measurement data transferred to host PC
– Typical Applications
• S-parameter measurements
• Time-domain analysis and TDR
• Intermodulation distortion (IMD) measurements
• Noise figure measurement
• Gain compression analysis
• Pulsed-RF measurements
• Spectrum analysis
• Automatic fixture removal
• Component characterization: filters, amplifiers, cables, connectors
– Compatibility & Integration
Operates with VNA activation software on compatible host PCs. Supports Keysight Electronic Calibration modules for calibration. Thunderbolt 3 enables high-speed data transfer. Multiple units interconnect for expanded port counts in multiport test configurations.


















