Agilent/Keysight M9373A

The Keysight M9373A is a PXIe Vector Network Analyzer module delivering S-parameter measurements in a single-slot form factor. Operating from 300 kHz to 14 GHz (expandable to 26.5 GHz), this 2-port VNA provides dynamic range exceeding 114 dB at 9 GHz and 110 dB at 20 GHz, with trace noise below 0.003 dBrms. The module excels in rapid measurement cycles - completing 201-point sweeps in 6 ms - and maintains exceptional thermal stability of 0.005 dB/°C to 4 GHz and less than 0.02 dB/°C up to 26.5 GHz.

Its compact dimensions (19.9 mm × 128.4 mm × 212.6 mm) and 0.59 kg weight integrate into PXIe chassis, while multiport capability scales via cascading modules for complex characterization tasks.

Technical Specifications

• Frequency Range: 300 kHz to 14 GHz standard; options available to 26.5 GHz


• Ports: 2-port standard configuration; expandable via module cascading


• Port Connectors: 3.5 mm and SMA (female)


• Dynamic Range: 0–122 dB (>114 dB at 9 GHz; >110 dB at 20 GHz)


• Output Power: −40 to +3 dBm typical; up to +7 dBm optional


• Noise Floor: −108 dBm


• Directivity: 31–48 dB


• Trace Noise: <0.003 dBrms


• Sweep Speed: 6 ms (201 points); 18–33 ms (401 points)


• Frequency Stability: 0.005 dB/°C (to 4 GHz); <0.02 dB/°C (to 26.5 GHz)


• Supply Voltage: 3.3–12 V


• Operating Temperature: 0–55 °C


• Dimensions: 19.9 × 128.4 × 212.6 mm; Weight: 0.59 kg

Key Features

• Electronic calibration (ECal) with full n-port correction capability


• Time-domain measurements and high-rejection filter analysis


• Automatic fixture removal and frequency offset mode options


• Scalar calibrated converter measurement support


• Factory calibration to ISO-9002 and NIST standards

Typical Applications

• Component characterization and signal analysis


• Return loss and insertion loss/gain measurement


• Multiport and multi-site automated testing


• Aerospace and defense RF/microwave validation

Compatibility & Integration

• PXIe and PXI-H slot compatible (M9018A chassis recommended)


• Requires PXIe system controller (M9037A or equivalent)


• Software support: IVI-COM, IVI-C, LabVIEW, MATLAB


• Automated Measurement Expert (AMX) for multiport S-parameter measurement


• Optional multiport cable kit (Y1242A) and accessory kit (Y1281A)