Keysight FieldFox N99xxA Series Handheld Analyzers.

Lightweight and compact: The handy FieldFox testers are perfect for rough field use without compromising on accuracy. Use the industry's most versatile handheld analysers for routine maintenance and thorough fault diagnosis.

Learn more

Carry Precision with You.

FieldFox models are portable, easy to hold and simple to operate. With a wide range of optional upgrades and extensions, FieldFox is the most powerful handheld analyzer in the industry.

Choose from models with spectrum analyzer (SA), vector network analyzer (VNA), cable/antenna analyzer (CAT) or ‘all-in-one’ RF/microwave combination analyzers (CAT + VNA + SA).

Video isn't showing? Watch directly on YouTube.

Model Overview.

RF/Microwave Combo Analyzers (CAT + VNA + SA)

Base model: Cable/Antenna Analyzer; optional Spectrum and Vector Network Analyzer

The analysis functions of the FieldFox N991xA and N995xA combo models include distance to fault, return loss (dB), transmission loss (1-port) and insertion loss (2-port).

30 kHz to 14 / 18 or 26.5 GHz (N991xA);
Option V5K: 5 kHz start frequency
300 kHz to 32 / 44 or 50 GHz (N995xA)
Insertion loss, return loss, cable loss, distance to fault, time domain reflectometry
Protection according to MIL-STD-810G; IP 53
Battery life up to 3.5 hours

Signal/Spectrum Analyzers (SA)

Base model: Spectrum analyzer; optional tracking generator and real-time spectrum analysis (RTSA)

The FieldFox N993xA and N996xA offer high-precision spectrum analysis and power measurement functions, including channel power (CHP + ACP), occupied bandwidth and spectrum emission mask (SEM).

100 kHz to 14 / 18 or 26.5 GHz (N993xA)
9 kHz to 32 / 44 or 50 GHz (N996xA)
Time gating, real-time spectrum analysis (RTSA), interference, transmission analysis with extended range
Protection according to MIL-STD-810G; IP 53
Battery life up to 3.5 hours

Vector Network Analyzers (VNA)

Base model: Vector network analyzer; optional cable/antenna analyzer

The FieldFox N992xA models are designed for transmission and reflection measurements, S11, S21. With options, the system can also be expanded to a 2-port S-parameter test system.

30 kHz to 14 / 18 or 26.5 GHz
Maximum dynamic range >91 dB
Full 2-port: S11, S21, S12, S22, amplitude and phase, time domain analysis and mixed mode
Protection according to MIL-STD-810G; IP 53
Battery life up to 3.5 hours

Exclusive

Keysight
N9916A

FieldFox handheld µW combi analyzer 30 kHz to 14 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9917A

FieldFox handheld µW combi analyzer 30 kHz to 18 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9918A

FieldFox handheld µW combi analyzer 30 kHz to 26.5 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9926A

FieldFox handheld µW network analyzer 30 kHz to 14 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9927A

FieldFox handheld µW network analyzer 30 kHz to 18 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9928A

FieldFox handheld µW network analyzer 30 kHz to 26.5 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9936A

FieldFox handheld µW spectrum analyzer 100 kHz to 14 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9937A

FieldFox handheld µW spectrum analyzer 100 kHz to 18 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9938A

FieldFox handheld µW spectrum analyzer 100 kHz to 26.5 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9950A

FieldFox handheld µW combi analyzer 300 kHz to 32 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9951A

FieldFox handheld µW combi analyzer 300 kHz to 44 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9952A

FieldFox handheld µW combi analyzer 300 kHz to 50 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9960A

FieldFox handheld µW spectrum analyzer 9 kHz to 32 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9961A

FieldFox handheld µW spectrum analyzer 9 kHz to 44 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Exclusive

Keysight
N9962A

FieldFox handheld µW spectrum analyzer 9 kHz to 50 GHz, USB 2.0, LAN, rechargeable battery

On Request

Delivery time upon request

Designed for Mobile Use in Harsh Working Conditions.

Robust enough to meet MIL specifications (MIL-PRF-28800F Class 2 and MIL-STD-810G, Method 511.5 (explosive environment))
Protection against damage from drops, shocks or other external influences
Protection against dust and spray water in accordance with protection class IP53 (EN 60529)
Weatherproof design for difficult applications in salty, humid environments
Fully sealed device housing for measurement stability in harsh environments (-10 to 55 ºC)
Battery life up to 3.5 hours for optimum flexibility

Options for Expanding your FieldFox Analyzer.

Powerful measurement and analysis functions make the FieldFox a versatile portable real-time spectrum analyser, vector network analyser or cable and antenna analyser. With the extensive range of options available, you can expand your model to meet your specific measurement requirements. Time domain reflectometry (TDR) and distance-to-fault measurements (Option 215) allow you to locate and characterise faults in the signal path. In VNA time domain mode (Option 010), reflection or transmission coefficients are displayed over time using inverse Fourier transformation of the frequency data. With real-time spectrum analysis (Option 350), you can detect even the smallest signal disturbances from sporadic events or the spectral behaviour of a test object, e.g. during switching operations.

The I/Q analyzer (Option 351) enables frequency and time domain measurements with an analysis bandwidth of 10 MHz, the display of I/Q parameters such as acquisition time, sampling rate, sampling period, sample values and up to 4 simultaneous multi-domain measurement displays. You can develop communication systems faster by performing over-the-air measurements (LTE FDD/TDD and 5GTF, Options 370/371 and 377). With OTA testing, you can check relevant performance factors such as signal paths, antenna gain and radiation characteristics.

With the built-in power meter (Option 310), the FieldFox can perform highly accurate measurements of channel power over a defined bandwidth. To verify network coverage or identify interference in a specific area, receiver measurements must be combined with GPS location markers or indoor markers. Using the mapping function (Option 352), the FieldFox imports maps from OpenStreetMap (OSM) and displays them on the screen.

Below is an Overview of the available Options:

TDR cable measurement (Option 215)*
VNA time domain (Option 010)*
Mixed-mode S-parameters (Option 212)*
Vector voltmeter VVM (Option 308)*
Spectrum analysis (Option 233)*
Real-time spectrum analysis RTSA (Option 350)**
I/Q analyzer IQA (Option 351)**
Noise figure NF (Option 356)**
Preamplifier (Option 235)**
Interference analyzer (Option 236)**
Channel scanner (Option 312)**
Over-the-air OTA (Optionen 370/371/377)**
AM/FM analog demodulation (Option 355)**
Spectrum analyzer time gating (Option 238)**

Advanced transmission analysis (Option 209)**
Built-in power meter (Option 310)**
External support for USB power sensors (Option 302)**
Pulse measurement (Option 330)**
USB power sensor measurement in the frequency domain (Option 208)**
Built-in GPS receiver (Option 307)**
DC bias variable-voltage source (Option 309)**
Remote control (Option 030)**
EMI measurement (Option 361)**
Indoor/outdoor mapping (Option 352): available for models N991xA, N993xA
EMF measurement (Option 358):for spectrum analyser (channel power only)
Reflection measurement RL, VSWR (Option 320): available for models N993xA/N996xA

* available for models N991xA/N995xA, N992xA
** available for models N991xA/N995xA, N993xA/N996xA

Do you have an individual request?

You are not quite sure yet or have further questions about the products? Do not hesitate to contact us. Whether directly on the phone or via online demo conveniently in front of your screen – our experts are there for you.

Do you have questions about a product?

Product number

Start product request

Do you want to use one of our individual services?

Select a category

Start individual request