Agilent/Keysight N9917B

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

• 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.