The Keysight N9962B FieldFox is a handheld microwave signal analyzer engineered for field testing, installation, and maintenance of microwave communication systems up to 50 GHz. It consolidates signal analyzer, spectrum analyzer, and network analyzer functionality into a single rugged, portable instrument. Lab-grade measurement accuracy meets the demands of challenging environments without sacrificing mobility.
Technical Specifications
Frequency Performance
• Frequency range: 300 kHz to 50 GHz
• Frequency resolution: 0.67 Hz (30 kHz to 1.91211 GHz), up to 32.19 Hz (45.8 GHz to 54 GHz)
• Frequency reference accuracy: ±0.9 ppm (spec) + aging; ±0.5 ppm (typical) + aging; ±0.010 ppm (spec) when locked to GPS
• Aging rate: ±1 ppm/yr for 20 years (spec), not to exceed ±3.5 ppm
Amplitude & Dynamic Range
• Amplitude accuracy: ±0.2 dB (typical, without warm-up)
• DANL (preamplifier on): -163 dBm
• System dynamic range: 117 dB
• Spur-free dynamic range: >104 dB @ 2.4 GHz
• Phase noise: -117 dBc/Hz @ 10 kHz offset
• Third order intercept (TOI): +13 dBm @ 2.4 GHz
Analysis & Bandwidth
• Standard analysis bandwidth: 10 MHz (40 MHz with Option B04, 120 MHz with Option B10)
• Real-time bandwidth: 120 MHz gap-free
• IF bandwidth: 3 Hz to 100 kHz (selectable)
• Data points: 101 to 10,001
Power & Interfaces
• System impedance: 50 Ω nominal (75 Ω with adapter and calibration kit)
• Battery life: Up to 4 hours
• Built-in ports: 2
– Key Features
• Vector network analyzer (VNA) with S11/S21 and full 2-port S-parameter measurements
• Tracking generator option for stimulus-response testing
• Built-in power meter for channel power and occupied bandwidth
• Over-the-air (OTA) measurements: 5G NR, LTE FDD/TDD, 5GTF
• IQ data streaming and analysis up to 120 MHz
• Spectrogram, AM/FM tune and listen, field strength measurement
• Cable and antenna analyzer (CAT) on combination models
• Pulse measurements with Option 330 and USB peak power sensors
• Direction finding (TDOA, angle of arrival) with optional capabilities
• 89600 VSA Software compatibility
– Typical Applications
• Microwave communication system commissioning and troubleshooting
• Component and subsystem characterization in the field
• Interference location and analysis
• 5G and LTE network deployment and verification
• Cable, connector, and antenna performance assessment
– Compatibility & Integration
The N9962B operates at 50 Ω impedance standard configuration with optional 75 Ω capability. It streams IQ data for external analysis and integrates with industry-standard 89600 VSA software for advanced signal processing.


















