Agilent/Keysight N9914A

The Keysight N9914A FieldFox is a handheld RF combination analyzer built for field testing, spectrum monitoring, and cable/antenna characterization. The base model delivers Distance-to-Fault, return loss, cable loss, and VSWR measurements across 30 kHz to 6.5 GHz. Its modular architecture supports optional vector network analysis, spectrum analysis, power metering, vector voltmeter, noise figure, real-time spectrum analysis, and GPS geo-location tagging - enabling a single portable instrument to handle routine maintenance through advanced troubleshooting.

The instrument meets MIL-SPEC durability standards with a dust-free, vent-free design. Its transflective display and backlit keys provide reliable readability from direct sunlight to low-light field conditions. Type-N female RF connectors and 50 Ω input impedance ensure compatibility with standard test equipment.

Technical Specifications

Frequency Range: 30 kHz to 6.5 GHz (base model); Spectrum Analysis option: 100 kHz to 6.5 GHz; Vector Network Analyzer option: 30 kHz to 6.5 GHz Measurement Capabilities:

• Cable and Antenna Analysis: Distance-to-Fault, return loss, 1-port cable loss, VSWR


• Vector Network Analyzer (opt.): Full 2-port S-parameters (S11, S21, S22, S12), magnitude/phase, TDR, mixed-mode S-parameters (1-port)


• Spectrum Analyzer (opt.): ±0.5 dB amplitude accuracy, PowerSuite, InstAlign, time gating, interference analysis, spectrogram


• Built-in Power Meter (opt.): USB power sensor support, microwave power measurements to 40 GHz, peak power and pulse profile analysis


• Vector Voltmeter (opt.): Phase shift, electrical length, magnitude/phase ratios


• Optional: Extended Range Transmission Analysis, Real-Time Spectrum Analyzer, Noise Figure, GPS receiver, Variable DC Bias Source (1–32 VDC, 650 mA, 8 W max) Performance:


• Trace Noise: 0.004 dB rms


• Dynamic Range (CAT): 100 dB


• Output Power: Up to 1 dBm (high power, 3–6.5 GHz); –45 dBm (low power setting)


• Input Impedance: 50 Ω

Key Features

• Modular expansion without external hardware


• MIL-SPEC durability, dust-free and vent-free design


• Transflective display with backlit control keys


• Type-N female RF connector

Typical Applications

• Field cable and antenna characterization


• Time-domain fault location


• Vector network measurements in installed systems


• Spectrum monitoring and interference detection


• Pulse and modulated signal analysis

Compatibility & Integration USB power sensor integration for extended power measurement range to 40 GHz; GPS receiver for field geo-location; DC bias source for active device testing.