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Never Sacrifice Capability Or Portability

Keysight's FieldFox portable analyzers are equipped to handle your toughest working environments during routine maintenance, in-depth troubleshooting, and anything in between. Choose the Keysight FieldFox configuration that best meets your needs.

  • Standard model includes cable and antenna analyzer.
  • Expand capabilities with optional VNA, spectrum analyzer, built-in power meter, vector voltmeter, and more.
  • Save time by measuring DTF and TDR in the same sweep.
  • Measure all four S-parameters simultaneously.
  • Make accurate spectrum analyzer measurements (± 0.5 dB) without warm-up.
  • Calibrate easily with QuickCal.
  • Use the industry's lightest all-in-one analyzer at only 3.2 kg (7.1 lb).

What's included:

  • AC/DC adapter
  • Localized power cord
  • Rechargeable Li-ion battery
  • LAN cable
  • Soft carrying case with backpack and shoulder strap
  • Quick Reference Guide


Number of Built-In Ports
2 ports
Maximum Frequency
50 GHz
Output Power
Up to 0 dBm
Trace Noise
0.004 dB
Number of Built-In Ports
Maximum Frequency
Output Power
Trace Noise
2 ports
50 GHz
Up to 0 dBm
0.004 dB
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Additional CAT/VNA Based Features:
Mixed-Mode S-Parameters
DTF/TDR Cable Measurements
Vector Voltmeter
Additional SA Based Features:
Real-Time Spectrum Analysis
Noise Figure Measurements
Over-The-Air Measurements
Built-In Power Meter
Extended Range Transmission Analysis (ERTA)
89600 VSA Software
Over-The-Air LTE FDD and 5GTF
Applications-Digital Video:
89600 VSA Software
Applications-General Purpose:
AM/FM Tune and Listen
Field Strength Measurement
SCPI Code Compatibility
Stimulus Response
Applications-Wireless Connectivity:
89600 VSA Software
Bandwidth Options:
10 MHz (standard)
Best Speed at 1001 Point, 1 Sweep:
478 us/pt
Cable and Antenna Analyzer:
Yes - Standard
DANL @1 GHz:
-159 dBm
50 GHz
Instrument Type:
Combination Analyzer
Maximum Analysis Bandwidth:
10 MHz
Maximum Frequency:
50 GHz
Maximum Real-Time Bandwidth:
10 MHz
Minimum Frequency:
300 kHz
Number of Built-In Ports:
2 ports
Output Power:
Up to 0 dBm
Overall Amplitude Accuracy:
±0.3 dB
Phase Noise @1 GHz (1 MHz offset):
-113 dBc/Hz
Phase Noise @1 GHz (10 kHz offset):
-111 dBc/Hz
Phase Noise @1 GHz (30 kHz offset):
-108 dBc/Hz
Power Measurement Using USB Sensor:
CW or Swept-Frequency
RF Pulse Test with Peak Sensor
SA Start Frequency:
5 kHz
Spectrum Analyzer:
Yes - Optional
Standard Attenuator Range:
30 dB
Standard Attenuator Step:
5 dB
System Dynamic Range:
110 dB
System Features:
GPS Receiver - Internal Only
Remote Control Capability
Built-In DC Source
TOI @1 GHz (3rd Order Intercept):
+13 dBM
Trace Noise:
0.004 dB
Vector Network Analyzer:
Yes - Optional

N9952A FieldFox Handheld Software

Make your FieldFox handheld analyzer more capable with convenient software upgrades — engineered to deliver precise measurements in the field.

  • Carry one portable instrument that handles routine maintenance and in-depth troubleshooting
  • Configure as a VNA, spectrum analyzer, built-in power meter, vector voltmeter, and more
  • Order software pre-installed or upgrade an existing instrument

PathWave Vector Signal Analysis (89600 VSA) Software

  • Record signals in the field and evaluate them later using 89600 VSA
  • Demodulate and perform comprehensive vector signal analysis to optimize your deployment
  • Decode and verify MAC, RLC, and RRC-layer messages across multiple radio frames
  • Analyze and troubleshoot signals in cellular, wireless-connectivity, aerospace, defense, and general-purpose applications

Interested in the N9952A?

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