The Keysight N9917B FieldFox is a handheld microwave analyzer combining cable and antenna measurements with optional vector network analysis, spectrum analysis, and power measurement in a single portable unit. Operating from 30 kHz to 18 GHz (spectrum analyzer from 9 kHz), it delivers field-deployable precision for network characterization, cable diagnostics, and interference detection.
– Technical Specifications
Frequency Coverage
• Standard CAT/VNA: 30 kHz to 18 GHz
• Spectrum Analyzer: 9 kHz to 18 GHz (5 kHz start frequency option)
Dynamic Range & Sensitivity
• VNA system dynamic range: >114 dB
• Simultaneous S-parameter dynamic range: 115 dB
• Display Average Noise Level at 1 GHz: −163 dBm
• Phase noise at 1 GHz (1 MHz offset): −124 dBc/Hz
• Phase noise at 1 GHz (10 kHz offset): −117 dBc/Hz
• Phase noise at 1 GHz (30 kHz offset): −115 dBc/Hz
• Third Order Intercept at 1 GHz: 11 dBm
RF Performance
• Output power: 8 dBm
• Trace noise: 0.001 dB
• Attenuator range: 40 dB standard (5 dB steps)
• Measurement speed: 171 µs/point (1,001 points, single sweep)
• Analysis bandwidth: 10 MHz standard; 40 MHz optional
Spectrum Analysis (Optional)
• Amplitude accuracy: ±0.3 dB without warm-up
• Real-Time Spectrum Analysis: up to 100 MHz or 120 MHz bandwidth options
– Key Features
• Cable and Antenna Analyzer (Standard): VSWR, return loss, cable loss, and Distance to Fault (dB) measurements
• Vector Network Analyzer (Optional): S11, S21 magnitude and phase; full four S-parameter measurement (S11, S12, S21, S22); mixed-mode reflection coefficients (Scc11, Sdd11, Scd11, Sdc11); Time Domain Reflectometry; time-domain gating
• Spectrum Analyzer (Optional): Interference analysis, spectrogram, and time-gating capability
• Power Meter (Optional): USB sensor integration for frequency-dependent power measurement
• Over-the-Air Measurements: 5G NR and LTE support
• Pulse Measurements (Optional): USB peak power sensor compatible
• Noise Figure Measurements (Optional)
– Typical Applications
Field-based antenna and transmission line validation; cable loss and fault location; microwave component characterization; spectrum monitoring and interference troubleshooting; 5G device over-the-air performance assessment.
– Compatibility & Integration
USB power sensor and peak power sensor compatible for expanded measurement capability.
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