The Keysight N9926A FieldFox is a handheld microwave vector network analyzer delivering benchtop-level measurement accuracy in field-deployable form. This single instrument integrates VNA, power meter, cable analyzer, and vector voltmeter functions into a rugged platform for maintenance, troubleshooting, and complex RF characterization in demanding environments.
Technical Specifications
Frequency Coverage
• VNA: 30 kHz to 14 GHz
• Built-in Power Meter: 100 kHz to 14 GHz
• USB Power Sensor Measurements: 9 kHz to 24 GHz (sensor dependent)
• Vector Voltmeter: 30 kHz to 14 GHz
Dynamic Range & Noise
• Dynamic Range: Up to 100 dB (to 9 GHz); up to 94 dB (to 14 GHz)
• Minimum Dynamic Range: 91 dBm
• Trace Noise: 0.004 dB rms
Output Power
• Maximum: +1 dBm
• Adjustable in 1 dB steps
• Flat response: ±1 dB across full frequency range
Receiver Performance
• Directivity: >42 dB
• Receiver Compression (500 MHz to 1 GHz): +10 dBm, 0.15 dB compression
• Receiver Compression (>1 to 26.5 GHz): +10 dBm, 0.10 dB compression
• IF Bandwidth Options: 10 Hz, 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz
System Impedance: 50 Ω nominal; 75 Ω with appropriate adapter and calibration kit
– Key Features
Vector Network Analysis
• Base S-parameter set: S11, S21 (magnitude and phase)
• Optional Full 2-Port VNA: Simultaneous measurement of all four S-parameters (S11, S21, S12, S22) with single connection
• Mixed-mode S-parameters (balanced measurements) with full 2-port configuration
• Time Domain Analysis (TDR) available as option
Additional Measurement Modes
• Cable and Antenna Analysis: Insertion loss, return loss, cable loss, distance-to-fault, TDR cable measurements
• Spectrum Analyzer: Available as option
• Vector Voltmeter: Phase and electrical length comparison
• Power Meter: Built-in (100 kHz to 14 GHz) plus USB power sensor support for average and pulse power
Calibration Engine
• CalReady, OSL (Open, Short, Load), Response, Enhanced Response
• QuickCal, Full 2-Port Unknown Thru, TRL (Thru, Reflect, Line)
• Calibration engine matches Keysight ENA and PNA network analyzers
Connectivity
• Two built-in ports
• USB Power Sensor port
• LAN cable connector
• Optional remote control capability (iOS devices)
• Optional built-in GPS receiver
Physical
• Weight: Approximately 3.0 kg (6.6 lb) including battery
