The Keysight N9927A FieldFox is a portable, battery-operated handheld microwave vector network analyzer delivering bench-level RF and microwave measurement performance in the field. Operating from 30 kHz to 18 GHz, it performs transmission/reflection (S11, S21) measurements as standard, with optional full two-port S-parameter capability (S11, S21, S12, S22). The instrument integrates vector network analysis, cable and antenna analysis, power measurement, and time domain reflectometry in a single rugged platform weighing 6.6 lb (3.0 kg).
Technical Specifications
Frequency Coverage
• VNA and Vector Voltmeter: 30 kHz to 18 GHz
• Built-in Power Meter: 100 kHz to 18 GHz
• USB Power Sensor: 9 kHz to 24 GHz (sensor dependent)
Dynamic Range & Measurement Accuracy
• Dynamic Range: 100 dB to 9 GHz; 94 dB to 18 GHz
• All four S-parameters simultaneously: up to 95 dB
• Maximum Dynamic Range: 91 dBm
• Directivity: >42 dB
Output Power
• Standard: -4 dBm nominal
• Low Power: -45 dBm nominal
• Flat output (±1 dB) across frequency range, 1 dB step adjustment
DC Bias Source
• Voltage: 1 to 32 VDC
• Current: 650 mA maximum
• Power: 8 W maximum
Physical & Environmental
• Weight: 6.6 lb (3.0 kg)
• Rugged, dust-free, fanless design with water resistance
• MIL-PRF-28800F Class 2 and MIL-STD-810G Method 511.5 Procedure I compliant
– Key Features
• Calibration methods: CalReady, OSL, Response, Enhanced Response, QuickCal, Full 2-port Unknown Thru Cal, TRL
• Time Domain Reflectometer (TDR) and Distance-to-Fault (DTF) cable measurements
• Vector Voltmeter for phase and electrical length comparison
• Mixed-Mode S-Parameters for balanced device measurements
• Simultaneous four S-parameter measurement with single connection
• Built-in GPS receiver with geo-location tagging and frequency reference
• Type-N female test ports with LAN connectivity
– Typical Applications
• Satellite communications systems
• Microwave backhaul networks
• Military communications equipment
• Radar system validation
• Active and passive device characterization
– Compatibility & Integration
Supports USB power sensors and LAN connectivity. Supplied with AC/DC adapter, rechargeable Li-ion battery, soft carrying case with backpack and shoulder strap, and quick reference guide.
