The Keysight N9917A FieldFox is a portable handheld RF analyzer that combines spectrum analysis, network analysis, and cable/antenna testing in a single 3.0 kg instrument. Operating from 5 kHz to 18 GHz, it delivers spectrum analyzer amplitude accuracy of ±0.5 dB across full temperature range (-10 to +55°C) without warm-up, supported by -155 dBm DANL at 1 GHz and ≥105 dB spur-free dynamic range. The dual Type-N port design accommodates simultaneous S-parameter measurements across 30 kHz to 18 GHz, with optional Vector Network Analyzer capability for S11, S21, S22, and S12 characterization including mixed-mode S-parameters and Time Domain Reflectometry. Phase noise of -113 dBc/Hz at 1 MHz offset and +15 dBm third-order intercept provide clean signal conditioning for demanding field work. Optional modules include high-performance spectrum analysis (Option 233), noise figure measurements to 18 GHz (Option 356), real-time spectrum analysis with 10 MHz bandwidth, built-in power metering (100 kHz to 18 GHz), vector voltmeter (30 kHz to 14 GHz), and over-the-air measurement capability. Channel power, AM/FM tune-and-listen, field strength, and frequency counter functions support telecommunications, aerospace, and defense deployment. Trace noise of 0.004 dB rms, maximum IQ streaming bandwidth of 1 MHz, and multi-format data storage (trace, state, PNG, I/Q) enable detailed signal characterization and documentation in the field.
Technical Specifications
• Frequency Coverage: 5 kHz to 18 GHz (Spectrum Analyzer); 30 kHz to 18 GHz (Cable/Antenna and Vector Network Analyzer); 10 MHz to 18 GHz (Noise Figure)
• Dynamic Range: 100 dB (CAT/VNA); ≥105 dB spur-free (Spectrum Analyzer)
• Amplitude Accuracy: ±0.5 dB full band, -10 to +55°C
• Displayed Average Noise Level (1 GHz): -155 dBm
• Trace Noise: 0.004 dB rms
• Phase Noise (1 GHz): -113 dBc/Hz (1 MHz offset); -111 dBc/Hz (10 kHz); -110 dBc/Hz (30 kHz)
• Third Order Intercept (1 GHz): +15 dBm
• Output Power: Up to 1 dBm, -4 dBm
• Ports: 2 Type-N (female) connectors
• Real-Time Bandwidth: 10 MHz maximum
• IQ Streaming Bandwidth: 1 MHz maximum
– Key Features
• Distance-to-Fault and return loss measurements
• Four-port S-parameter simultaneous characterization with magnitude and phase
• Mixed-mode S-parameters and Time Domain Reflectometry in single sweep
• Channel power and antenna factor calculations
• AM/FM tune-and-listen with field strength measurement
• Frequency counter markers
• Power measurement capability (100 kHz to 18 GHz, optional)
• Vector voltmeter for phase and electrical length (30 kHz to 14 GHz, optional)
• Real-time spectrum analysis and extended-range transmission analysis options
• Portable form factor at 3.0 kg
– Typical Applications
• Cable and antenna field validation
• Network characterization and troubleshooting
• Spectrum monitoring and signal identification
• Noise figure verification
• Component S-parameter measurement
• Telecommunications, aerospace, and defense field testing
– Compatibility & Integration
Data export via trace, trace+state, PNG image, and I/Q formats supports integration with external analysis tools and documentation workflows.
