Keysight FieldFox B Series Handheld CAT, VNA, Spectrum Analyzers

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Benefits of the FieldFox B Series Handheld Multifunctional RF Analyzers

  • RF Signal/spectrum analyzers (SA), vector network analyzers (VNA), combination instruments.
  • Compact, rugged handheld instruments for mobile use in the field.
  • High budget flexibility - choose desired features and easily upgrade later.

Keysight FieldFox B Series Handheld CAT, VNA, Spectrum Analyzers

Keysight FieldFox B Series is a family of handheld devices made for field measurements of RD spectrum, cables and antennas, filters, isolators, transmission lines, transmitter power, analog/digital modulation analysis and more.

  • Measure with confidence from 5 kHz to 9 GHz.
  • 120 MHz real-time spectrum analysis.
  • Various combinations:
    • CAT - cable and antenna analyzer.
    • VNA - vector network analyzer.
    • SA - signal/Spectrum analyzer.
    • Or: All-on-one combination analyzer.
  • Rugged: Meets MIL-PRF-28800F Class 2, IP53.
  • Wide operation temperature -10...+55°C.
  • Portable and compact, light-weight 3.34 kg.
  • Built-in GNSS/GPS receiver.
  • ECal support.
  • Extended range transmission analysis (ERTA).
  • Supports over-the-air (OTA) measurements for 4G LTE FDD/TDD and 5G NR.

FieldFox B Series Family Features and Options

OptionDescriptionCombination Analyzers
Signal Analyzers
CAT/vector network analysis
010VNA time domain-
210VNA transmission/reflection-
211VNA full 2-port S-parameters-
2121-port mixed-mode S-parameters-
215TDR cable measurements-
305Cable and antenna analyzerBase model1)-2)
308Vector voltmeter-
320Reflection measurement (RL, VSWR and scalar measurement)-3)
Spectrum analysis
209Extended range transmission analysis (ERTA)
220Tracking generator-4)
233Spectrum analyzerBase model1)
236Interference analyzer and spectrogram
238Spectrum analyzer time gating
312Channel scanner
350Real-time spectrum analyzer (RTSA)
351I/Q analyzer (IQA)
352Indoor and outdoor mapping
353IQ streaming
355Analog demodulation
356Noise figure (NF)
358EMF measurements
360Phased array antenna support
361EMI measurements
370Over-the-air (OTA) LTE FDD
371Over-the-air (OTA) LTE TDD
377Over-the-air (OTA) 5G TF
378Over-the-air (OTA) 5G NR
B04Analysis bandwidth, 40 MHz5)
B10Analysis bandwidth, 120 MHz5)
Power measurements
208USB power sensor measurement versus frequency
302USB power sensor support
310Built-in power meter
330Pulse measurement with USB peak power sensor
System features
030Remote control capability
307GPS receiver
309DC bias variable-voltage source
-Frequency extender support6)
Windows based software
89601BPathWave VSA (89600 VSA) software
N6820ESSurveyor 4D software
  1. Base model functionality listed is the primary function of that instrument. For example, on the N991xB combo analyzers, cable and antenna analyzer is the standard function included with every N991xB.
  2. Option 305 is not available on the N993xB. A subset of measurements, return loss and VSWR, is available as Option 320.
  3. Option 320 is not applicable to N991xB. The N991xB includes reflection measurements of return loss and VSWR as standard functions.
  4. On the N991xB analyzers, order Options 233 and 210 to obtain a tracking generator with the spectrum analyzer. There is no Option 220 on the N991xB analyzers. Option 233 provides the spectrum analyzer capability and Option 210 the “tracking” capability.
  5. 10 MHz standard.
  6. Models N9913/33B, N9914/34B and N9915/35B do not support frequency extenders. This is because the mixers’ starting LO frequency is higher than 9 GHz and the FieldFox Port 1 provides the LO to the mixer.

Model Overview FieldFox B Base Devices

FieldFox RF and Microwave (Combination) Analyzers: Cable and Antenna Tester (CAT) + Vector Network Analyzer (VNA) + Spectrum Analyzer (SA)
ModelDescriptionCAT and VNA FrequencySA Frequency (usable to 5 kHz)Testport Connector
N9913B4 GHz FieldFox RF analyzer30 kHz...4 GHz9 kHz...4 GHzType N (female)
N9914B6.5 GHz FieldFox RF analyzer30 kHz...6.5 GHz9 kHz...6.5 GHzType N (female)
N9915B9 GHz FieldFox RF analyzer30 kHz...9 GHz9 kHz...9 GHzType N (female)
FieldFox Microwave Spectrum/Signal Analyzers
ModelDescriptionFrequency range (useable to 5 kHz)Testport Connector
N9933B4 GHz FieldFox signal analyzer9 kHz...4 GHzType N (female)
N9934B6.5 GHz FieldFox signal analyzer9 kHz...6.5 GHzType N (female)
N9935B9 GHz FieldFox signal analyzer9 kHz...9 GHzType N (female)

Included: FieldFox base device N 9913B, 9914B, 9915B, 9933B, 9934B, 9935B, power adaptor, battery, bag, LAN cable, short description.

Comparing FieldFox A and B Series

Feature▸FieldFox B Series▸FieldFox A Series
CAT (cable antenna test)
VNA (vector network analyzer)
SA (spectrum analyzer)
RTSA (real-time spectrum analyzer)
Realtime bandwidth120 MHz10 MHz
Max. frequency9 GHz50 GHz
VNA dynamic range117 dB100 dB
DANL (displayed average noise level)-163 dBm at 2 GHz,
-151 dBm at 40 GHz
-159 dBm at 2 GHz,
-144 dBm at 40 GHz
TOI (third order intercept)+13.5 (+16) dBm+15 dBm
Phase noise , CF = 1 GHz, 10 kH Offset-117 (-113) dBc/Hz-111 dBc/Hz
Sweep speed (CAT)409 (457) µs/data point650 µs/data point
Operating temperature-10...+55°C-10...+55°C
Weight3.34 kg3.2 kg
Battery time4 h3.5 h

3Y Warranty & Keysight CARE

Agilent's Electronic Measurement Group is now Keysight Technologies.