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.
