KEYSIGHT N99xxB FieldFox are handheld multifunction analyzers that bring benchtop precision directly into the field. Considered the "Swiss Army knife" for RF and microwave analysis, FieldFox integrates the functionality of a cable and antenna tester (CAT), a vector network analyzer (VNA), a spectrum analyzer (SA), and much more into a single rugged and lightweight instrument. Designed to withstand the toughest conditions, these tools are the ideal solution for the maintenance and installation of systems in sectors such as aerospace, defense, and wireless communications, ensuring reliable measurements wherever they are needed.
- All-in-One Instrument: Integrates various measurement functions into a single portable device, expandable via software.
- Reliable Precision: Delivers accurate measurements (e.g., ± 0.3 dB for spectrum analysis) without needing to warm up.
- Rugged and Lightweight: Designed for the toughest environments, with a weight of only 3.4 kg (7.4 lb).
- Advanced Analysis: Supports options like real-time spectrum analysis (RTSA) with up to 120 MHz bandwidth to capture elusive signals.
- Ready for the Future: Performs Over-the-Air (OTA) measurements for 5G NR and LTE signals (optional).
- Geolocation: Integrates a GPS/GNSS receiver for geolocation and time-stamping of measurements (optional).
Benchtop Precision, Field-Ready Ruggedness
With FieldFox, you don't have to sacrifice precision for portability. Each analyzer is factory-calibrated with the same metrology as renowned Keysight benchtop instruments, ensuring reliable and correlated measurements. The fanless, ventless design, compliant with IP53 standards, protects the instrument from dust and moisture, while its military-grade ruggedness (MIL-PRF-28800F compliant) ensures maximum durability in any operating environment.
The True All-in-One: Flexibility and Upgradability
The true strength of the FieldFox series lies in its incredible flexibility. Depending on the base model chosen, dozens of functions can be added via simple software upgrades. An instrument that starts as a spectrum analyzer can become a full vector network analyzer, a cable and antenna tester, and much more. This upgradable architecture allows you to protect your investment and adapt the instrument to new measurement needs in the future.
| Model |
Short Description |
Frequency Range |
Base Functionality |
| N9916B |
Handheld microwave analyzer |
14 GHz |
Cable and Antenna Tester (CAT) |
| N9917B |
Handheld microwave analyzer |
18 GHz |
Cable and Antenna Tester (CAT) |
| N9918B |
All-in-one handheld microwave analyzer |
26.5 GHz |
Cable and Antenna Tester (CAT) |
| N9936B |
Handheld microwave spectrum analyzer |
14 GHz |
Spectrum Analyzer (SA) |
| N9937B |
Handheld microwave spectrum analyzer |
18 GHz |
Spectrum Analyzer (SA) |
| N9938B |
Handheld microwave spectrum analyzer |
26.5 GHz |
Spectrum Analyzer (SA) |
| N9950B |
Handheld microwave analyzer |
32 GHz |
Cable and Antenna Tester (CAT) |
| N9951B |
Handheld microwave analyzer |
44 GHz |
Cable and Antenna Tester (CAT) |
| N9952B |
Handheld microwave analyzer |
50 GHz |
Cable and Antenna Tester (CAT) |
| N9953B |
Handheld microwave analyzer |
54 GHz |
Cable and Antenna Tester (CAT) |
| N9960B |
Handheld microwave spectrum analyzer |
32 GHz |
Spectrum Analyzer (SA) |
| N9961B |
Handheld microwave spectrum analyzer |
44 GHz |
Spectrum Analyzer (SA) |
| N9962B |
Handheld microwave spectrum analyzer |
50 GHz |
Spectrum Analyzer (SA) |
| N9963B |
Handheld microwave spectrum analyzer |
54 GHz |
Spectrum Analyzer (SA) |
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