The Keysight N9915B FieldFox is a handheld microwave analyzer integrating spectrum analysis, network analysis, and cable/antenna testing into a single 3.4 kg portable unit. Designed for field professionals, it delivers RF and microwave measurements across cellular deployment, maintenance, and on-site verification tasks without requiring warmup.
Technical Specifications
Frequency & Performance
• Frequency range: 30 kHz to 9 GHz (CAT and VNA); 9 kHz to 9 GHz (SA option)
• Maximum frequency: 9 GHz (X-band)
• Dynamic range: 115 dB (simultaneous all four S-parameters, VNA option)
• Real-time bandwidth: 100 MHz gap-free
• Trace noise: 0.0008 dB rms
• Output power: Up to 1 dBm
• System impedance: 50 Ω nominal; 75 Ω with adapter and calibration kit
• Spectrum analyzer accuracy: ±0.3 dB (no warmup required)
Measurement Capabilities
• Cable and Antenna Testing (CAT): Standard function
• Vector Network Analyzer (VNA): Full 2-port S-parameter measurements; S21, S11, magnitude, and phase; 2-port insertion loss in CAT mode
• VNA options: Transmission/Reflection (Option 210); Full 2-port calibration (Option 211); Time Domain (Option 010); Mixed-Mode S-Parameters (Option 212)
• Spectrum Analyzer (SA): Optional capability
• Over-the-Air (OTA) measurements: 5G NR and LTE support
• Pulse measurements: Option 330
• USB power sensor support: Option 208
• Power meter: Option 310 (channelized measurement)
– Key Features
• Ruggedized design for harsh field environments
• Lightweight handheld form factor (3.4 kg / 7.4 lb)
• Integrated GPS/GNSS for geolocation and timestamping
• No frequency extender support; external mixers required for frequencies above 9 GHz
– Typical Applications
• Cellular network deployment and maintenance
• In-depth field troubleshooting
• On-site antenna and cable verification
• Cable loss and S-parameter characterization
– Compatibility & Integration
• Standard configuration includes Cable and Antenna Analyzer
• Vector Network Analyzer and Spectrum Analyzer available as optional upgrades
• Compatible with external power sensors via USB (Option 208)
• Operates at 50 Ω and 75 Ω with appropriate calibration kit
