Already own a handheld analyzer?

Trade-in your current FieldFox model or a competitor's model and get credit up to 25% towards a new FieldFox.


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.

  • Configure as a full, two-port VNA, time-domain reflectometer, vector voltmeter, cable and antenna analyzer, and more.
  • Measure all four S-parameters simultaneously with a single connection and up to 90 dB of dynamic range.
  • Perform accurate testing with QuickCal, full two-port unknown thru Cal, and Thru, Reflect, Line (TRL) calibration in the field.
  • Measure average and pulse power easily with a USB power sensor.
  • Carry the lightest handheld VNA at only 2.8 kg (6.2 lb.).

What's included:

  • AC/DC adapter
  • Localized power cord
  • Rechargeable Li-ion battery
  • LAN cable
  • Soft carrying case with backpack and shoulder straps
  • Quick Reference Guide
[an error occurred while processing this directive]

N9923A 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, built-in power meter, vector voltmeter, and more.
  • Order software pre-installed or upgrade an existing instrument.


Instrument Control Software

  • Easily connect and control your handheld analyzer with no programming.
  • Acquire screen images and trace data in a few clicks.
  • Rapidly build custom automated test sequences in minutes.
  • Includes Application Programming Interfaces (APIs) for instrument  control from your PC.

Interested in the N9923A?

Featured Resources

View All Resources

View All Resources

Want help or have questions?