FieldFox Handheld Analyzers - Designed for You and the Work You Do Everyday!

Field-proof usability for better answers in less time:

Bright, low-reflection display and backlit keys enable easy viewing in direct sunlight or darkness
Intuitively designed user interface for your workflow, enabling measurements in fewer key presses
One-button measurements simplify complex setups and ensure quick, accurate results with confidence
Calibration Wizard guides user to ensure simple and accurate calibrations
Standard three-year warranty ensures field confidence, especially in harsh environments
5-, 7- and 10-year warranties are also available

FieldFox Handheld Analyzers

Designed for your Toughest Working Conditions:

Rugged enough to meet MIL-specs
Completely sealed instrument enclosure provides measurement stability in harsh environments, -10 to +55 C, (14 to 131 F)
Specially designed to protect instrument from damage due to drops, shock or other external impacts
Water-resistant chassis, keypad and case withstand wide temperature ranges and salty, humid environments
Meets MIL-PRF-28800F Class 2 requirements
Type tested and meets MIL-STD-810G, Method 511.5, Procedure I requirements for operation in explosive environments
Type tested and meets IEC/EN 60529 requirements for ingress protection

FieldFox Handheld Analyzers

Carry FieldFox wherever you need to go:

Kit friendly at 7.35 lb. (3.34 kg) for the N991B/3xB and N995xB/6xB
Large buttons are easy to operate, even when wearing gloves
Field swappable battery lasts up to 4 hours
Non-slip rubber grip securely fits in your hands and won't slide off the hood of your vehicle
Vertical "portrait" orientation makes it easy to hold and operate at the same time

FieldFox Handheld Analyzers Meet the Needs of Novices and Expert:

Keysight FieldFox handheld analyzers can withstand your toughest working conditions with a ruggedized yet light weight and portable battery powered design for making measurements for RF devices like cables, antennas, filters, amplifiers and signal/spectrum analysis. Create your specialized handheld analyzer solution by selecting FieldFox options and features to address cable and antenna test (CAT) spectrum analysis (SA) or vector network analysis (VNA) real time spectrum analyzer and over the air digital demodulation analysis required for your application. The FieldFox analyzers are always ready to make RF measurements, ensuring every operating mode is flexible enough to meet the needs of novices and experts alike.

Ideal 5G deployment and field-testing tool with 100 MHz real-time bandwidth and over-the-air (OTA) measurements
Ability for 5G, satellite and radar operators to make true RF coverage measurements, up to 54 GHz and beyond, and beamforming verification with phased array antenna support
Simplified field signal monitoring with wideband capture and recording of fully corrected IQ data
Highly efficient radar and EW systems diagnostics with spectrum analysis, full 2-port VNA, power meter, pulse and noise figure measurements and results that correlate with high-performance bench top instruments
Durable handheld analyzers that can withstand your toughest working conditions