Agilent/Keysight P9373B

The Keysight P9373B is a portable two-port vector network analyzer operating from 9 kHz to 14 GHz with 3.5 mm female connectors. Part of the Streamline Series, it delivers measurement performance comparable to higher-end PNA and ENA platforms in a compact form factor under 2 kg. The instrument connects to an external Windows 10 PC via Thunderbolt 3, providing full VNA capabilities through software control with the same GUI and SCPI command set as Keysight's benchtop and modular systems.

Technical Specifications

• Frequency Range: 9 kHz to 14 GHz with 1 Hz resolution


• Dynamic Range: 115 dB at 10 Hz IF bandwidth (4 GHz and 20 GHz)


• Trace Noise: 0.0015 dB rms / 0.01° rms at 4 GHz; 0.0018 dB rms / 0.024° rms at 20 GHz


• Maximum Output Power: +8 dBm at 4 GHz


• Power Sweep Range: −60 to +7 dBm at 4 GHz; −60 to +10 dBm at 20 GHz


• Test Port Noise Floor: −107 dBm at 4 GHz and 20 GHz


• Receiver Compression: 0.2 dB magnitude / 5° phase at +8 dBm input


• Temperature Stability: 0.005 dB/°C (magnitude) / 0.1°/°C (phase) at 4 GHz


• Input Impedance: 50 Ω nominal


• Physical: 333 × 176 × 48 mm; less than 2 kg

Key Features

• Two-port network analysis of passive and active components


• Time-domain reflectometry and automatic fixture removal via software


• Electronic calibration (ECal) module support


• Expandable to 8 ports by cascading two VNAs with optional Y1701A configuration kit


• 1 Hz frequency resolution across 9 kHz to 14 GHz span

Typical Applications

• RF component characterization and verification


• Microwave filter and transmission line analysis


• On-site and field testing with portable deployment


• Automated production test integration

Compatibility & Integration

• Host Interface: Thunderbolt 3 and USB


• Operating System: Windows 10 (64-bit) Version 1909 or later


• Software: Keysight VNA application suite; identical SCPI command set to PNA, ENA, and PXI platforms


• Connectors: 3.5 mm female test ports


• Accessories: VNA Activation Software (Option 001) enables full functionality