The Keysight N9914B FieldFox is a handheld RF analyzer that combines spectrum analysis, vector network analysis, and cable and antenna testing in a single 3.4 kg instrument. Operating to 6.5 GHz, it delivers 115 dB dynamic range for simultaneous four-port S-parameter measurement and achieves -163 dBm DANL at 1 GHz with ±0.3 dB measurement accuracy. The dual Type-N port design supports 30 kHz to 6.5 GHz cable and antenna analysis, 9 kHz to 6.5 GHz spectrum analysis with optional real-time capability, and 100 MHz gap-free real-time bandwidth. Phase noise performance reaches -124 dBc/Hz at 1 MHz offset. Built-in GPS/GNSS geolocation, LAN connectivity, and optional remote control enable field deployment in demanding environments. Measurement functions include optional vector network analysis, power metering, field strength, noise figure, and 5G NR/LTE over-the-air support.
Technical Specifications
• Frequency Range (Cable/Antenna/VNA): 30 kHz to 6.5 GHz
• Frequency Range (Spectrum Analysis): 9 kHz to 6.5 GHz
• Real-Time Bandwidth: 100 MHz gap-free
• Maximum Analysis Bandwidth: 120 MHz
• Dynamic Range (S-parameters): 115 dB
• DANL @ 1 GHz: -163 dBm
• Measurement Accuracy: ±0.3 dB
• Trace Noise: 0.0008 dB rms
• Phase Noise @ 1 GHz (1 MHz offset): -124 dBc/Hz
• Phase Noise @ 1 GHz (10 kHz offset): -117 dBc/Hz
• Phase Noise @ 1 GHz (30 kHz offset): -115 dBc/Hz
• Third Order Intercept @ 1 GHz: +11 dBm
• Output Power: Up to 1 dBm
• System Impedance: 50 Ω nominal (75 Ω with adapter)
• Attenuator Range: 40 dB (5 dB steps)
• IF Bandwidth Options: 3 Hz to 100 kHz (nine steps)
• Ports: 2 Type-N (f) connectors
• Weight: 3.4 kg
– Key Features
• Dual-port simultaneous S-parameter measurement
• Real-Time Spectrum Analysis (RTSA) with option
• GPS/GNSS support for geolocation and timestamping
• LAN and optional remote control
• Optional USB power sensor integration
• SCPI compatibility and 89600 VSA Software support
– Measurement Capabilities
• Cable and Antenna Analysis (standard)
• Vector Network Analysis (optional)
• Spectrum Analysis (optional)
• Power Meter, Vector Voltmeter, Noise Figure (optional)
• Field Strength and Spectrogram (optional)
• 5G NR and LTE over-the-air measurements (optional)
– Typical Applications
Field maintenance, installation verification, 5G and satellite communication system troubleshooting, antenna characterization, transmission line analysis, and electronic warfare assessment.
