Agilent/Keysight N9962B

The Keysight N9962B FieldFox is a portable RF analyzer integrating spectrum analysis, network analysis, and cable/antenna testing into a single field-deployable instrument. Operating from 9 kHz to 50 GHz, it delivers ±0.2 dB amplitude accuracy with no warm-up required and captures intermittent signals across 120 MHz of gap-free, real-time bandwidth. The unit combines rugged MIL-spec construction with practical field ergonomics: bright low-reflection display, backlit keys, and intuitive controls designed for demanding outdoor and indoor environments.

Technical Specifications

Frequency Coverage: 9 kHz to 50 GHz (usable down to 5 kHz) Spectrum Analyzer:

• Amplitude accuracy: ±0.2 dB


• Gap-free real-time bandwidth: 120 MHz


• Minimum signal duration (100% POI): 5.52 µs at full amplitude accuracy


• Real-Time Spectrum Analysis (RTSA) with optional real-time spectrum analyzer functionality


• Noise Figure (NF) measurements


• Time gating, interference analysis, spectrogram, and waterfall display options


• Channel scanner option available Network & Cable Analysis:


• Cable and Antenna Analyzer (CAT) base functionality includes Distance To Fault (linear/dB/VSWR), Return Loss, and 1-port cable loss


• 2-port insertion loss via Option 210


• Vector Network Analyzer (VNA) support with reflection measurements (Return Loss, VSWR, scalar) Additional Capabilities:


• Built-in power meter and power sensor support


• Tracking generator and pre-amplifier options


• USB power sensor measurements versus frequency


• Radar pulse characterization and Extended Range Transmission Analysis (ERTA)


• 5G NR/LTE over-the-air (OTA) measurements (Options 233, 307 required; 235 recommended) with 10 MHz, 40 MHz, and 120 MHz analysis bandwidth options


• I/Q data capture and PathWave Vector Signal Analysis (89600 VSA) integration


• GPS/GNSS receiver with geolocation and timestamping


• Variable DC voltage source, frequency counter, and EMF measurements


• Pulse measurement, analog demodulation, and phase array antenna support


• AM/FM Tune and Listen, Field Strength Measurement, and indoor/outdoor mapping applications


• SCPI code compatibility and stimulus response analysis

Key Features

• MIL-spec durability with protection against drops, shock, and water ingress


• Zero warm-up time for immediate measurements


• Backlit display and intuitive field-optimized interface

Typical Applications Spectrum monitoring, RF component characterization, antenna tuning, 5G signal analysis, interference investigation, field service, and cable fault location.

Compatibility & Integration Supports SCPI commands and integrates with PathWave Vector Signal Analysis software for advanced signal processing and visualization.