Agilent/Keysight N9937B

The Agilent/Keysight N9937B is a handheld microwave network analyzer engineered for field deployment across aerospace, defense, and telecommunications applications. Operating from 30 kHz to 26.5 GHz, it delivers vector network analysis, cable and antenna characterization, and spectrum analysis in a ruggedized 2.5 kg platform. The instrument provides 100 dB dynamic range at 10 GHz with 0.005 dB RMS trace noise, enabling accurate S-parameter measurement, return loss, VSWR, insertion loss, and distance-to-fault analysis.

Full two-port calibration supports SOLT and TRL methodologies. Adjustable RF output spans -50 dBm to +10 dBm. The color LCD display, Type-N connectors, and connectivity via USB and Ethernet support field workflows and remote control.

Operating temperature range is -10 °C to +55 °C; storage extends to -40 °C to +70 °C across 5 % to 95 % humidity. The N9937B executes full two-port S-parameter sweeps in 500 ms and integrates modulation distortion analysis for 3GPP, LTE, CDMA, WCDMA, and GSM signal evaluation.

Technical Specifications

• Frequency Range: 30 kHz to 26.5 GHz


• Dynamic Range: 100 dB (typical at 10 GHz)


• Trace Noise: 0.005 dB RMS (typical at 10 GHz)


• Measurement Speed: 500 ms typical for full two-port S-parameter sweep


• Power Output: -50 dBm to +10 dBm (adjustable)


• Input Impedance: 50 ohms


• RF Connectors: Type-N female


• Display: High-resolution color LCD with adjustable backlight


• Weight: Approximately 2.5 kg


• Operating Temperature: -10 °C to +55 °C


• Storage Temperature: -40 °C to +70 °C


• Humidity: 5 % to 95 % non-condensing

Key Features

• S-parameter measurement (S11, S21, S12, S22) with magnitude and phase


• Smith Chart analysis and return loss characterization


• Distance to Fault (DTF) and cable loss measurement


• Full two-port calibration: SOLT and TRL


• External power sensor support for wide-frequency power measurement


• Modulation distortion analysis for cellular standards


• USB Host and Device ports; Ethernet connectivity


• Ruggedized handheld design for outdoor field use

Typical Applications

• Cable and antenna field testing


• Vector network analysis in production and field environments


• Spectrum analysis across microwave bands


• Base station signal characterization


• LTE, CDMA, WCDMA, and GSM signal evaluation

Compatibility & Integration

• Keysight VNA Master software for advanced analysis and reporting


• Network connectivity for remote operation and data transfer