The Keysight N9928A FieldFox is a handheld vector network analyzer delivering RF and microwave measurement capability across 30 kHz to 26.5 GHz in a portable, field-deployable platform. This dual-port instrument combines vector network analysis, spectrum analysis, and optional cable/antenna characterization in a single 3.0 kg unit rated for explosive environments and harsh field conditions.
Technical Specifications
Frequency & Dynamic Range
• Frequency range: 30 kHz to 26.5 GHz
• Maximum analysis bandwidth: 10 MHz
• Dynamic range: 100 dB to 9 GHz; 94 dB to 20 GHz; 94 dB (four independent receivers)
• Trace noise: 0.004 dB rms to 20 GHz
• System impedance: 50 Ω nominal; 75 Ω with adapter and calibration kit
Output & Power
• Output power: Up to 1 dBm, adjustable in 1 dB steps across entire frequency range
• Built-in power meter: 100 kHz to 26.5 GHz
• USB power sensor support: 9 kHz to 24 GHz (sensor dependent)
IF Bandwidth (VNA mode)
• Selectable: 10 Hz, 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz
– Key Features
• Two built-in RF ports for reflection and transmission measurements
• Standard S-parameter measurements (S11, S21); optional full 2-port (S11, S21, S12, S22)
• Optional measurement modes: cable and antenna analysis (distance-to-fault, return loss, cable loss), vector voltmeter, time-domain, mixed-mode S-parameters
• Calibration methods: QuickCal, full 2-port unknown thru, TRL
• Rugged construction: dust-free, fanless, water-resistant; MIL-PRF-28800F Class 2 and MIL-STD-810G Method 511.5 Procedure I compliant
• Handheld form factor (6.6 lb / 3.0 kg) with rechargeable Li-Ion battery
– Typical Applications
• On-site RF system validation and troubleshooting
• Component and device characterization in field environments
• Cable and antenna performance verification
• Power measurements across wide frequency spectrum
– Compatibility & Integration
LAN connectivity with included cable. USB interface for external power sensors. Supplied with AC/DC adapter, localized power cord, rechargeable battery, soft carrying case with backpack and shoulder strap, and documentation.
