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How do I upgrade my N9913A/14A/15A/16A/17A/18A/50A/51A/52A FieldFox Handheld Microwave Analyzer?

30-Day Free Trial Options License for FieldFox Handheld Analyzers 

  • Redeem FREE 30-day trial option license for your existing FieldFox handheld analyzer
  • Evaluate the full-featured version of FieldFox capability with no functionality restrictions
  • Trial period begins when the license is issued through the Keysight Software Licensing website and is non-renewable
  • One 30-day trial license for each option/capability per instrument
  • Certain option may require prerequisite option(s) to function, please check additional requirements for more information
  • Be sure your instrument is current with the latest firmware release to take advantage of the latest functions and capabilities.


If you are ready to redeem a free 30-day trial license, please select the option trial and complete the short redemption form. You will be prompted for serial number for the specific instrument you will be using.

Option License Upgrades for FieldFox Handheld Analyzers 

  • Most of the N9913A, N9914A, N9915A, N9916A, N9917A, N9918A, N9950A, N9951A, N9952A FieldFox Handheld Microwave Analyzer options are available for post-sale retrofit.
  • The table below provides an Installation Note for each upgrade. The installation note includes a list of the performance verification tests and adjustments required as well as the test equipment and test software necessary to complete the upgrade. In most cases the instrument will need to be sent to and Keysight Service Center.
  • Hardware upgrades may require that a minimum firmware is already installed. Up-to-date firmware can be downloaded for free from FieldFox - Firmware.
  • Upgrades may also require the redemption and installation of a license key before they will be activated. Once a redemption certificate is received, the license key(s) can be redeemed at the Software License Redemption Website.
  • Required adjustments for all options are performed for new instruments before shipment from the factory. Upgrades installed during the first 12 months of use do not require testing or adjustment. When an option is added to an instrument after it has been in service for more than 12 months, annual calibration is recommended for some options to insure specified performance.
DescriptionOptionModel NumberOption TrialOrder option upgrade asInstallation NoteUpgrade ContentsMinimum FirmwareAdjustments RequiredAdditional RequirementsIncompatible WithInstalled By - Estimated Time
CAT/Vector Network Analysis

Vector network analyzer time domain analysis

010N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A

N9913A-010 Trial
N9914A-010 Trial
N9915A-010 Trial
N9916A-010 Trial
N9917A-010 Trial
N9918A-010 Trial
N9950A-010 Trial
N9951A-010 Trial
N9952A-010 Trial

N991x/5xAU-010Software, License key≥A.06.00None

Required option: 210

Recommended option: 211

NoneCustomer - 0.5 Hrs
Enable QuickCal112N9913A
N9914A
N9915A
N9916A
N9917A
N9918A

N9913A-112 Trial
N9914A-112 Trial
N9915A-112 Trial
N9916A-112 Trial
N9917A-112 Trial
N9918A-112 Trial

*Not Available on N995xA

N991xAU-112Software, License key≥A.06.00NoneNone

Most accurate up to 18 GHz for DUT with 7/16 and Type-N.

More info from Configuration Guide for other connectors.

Customer - 0.5 Hrs
Vector network analysis for transmission and reflection210N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-210 Trial
N9914A-210 Trial
N9915A-210 Trial
N9916A-210 Trial
N9917A-210 Trial
N9918A-210 Trial
N9950A-210 Trial
N9951A-210 Trial
N9952A-210 Trial
N991x/5xAU-210Software, License key≥A.06.00NoneNoneNoneCustomer - 0.5 Hrs
Vector network analyzer full 2-port S parameters211N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-211 Trial
N9914A-211 Trial
N9915A-211 Trial
N9916A-211 Trial
N9917A-211 Trial
N9918A-211 Trial
N9950A-211 Trial
N9951A-211 Trial
N9952A-211 Trial
N991x/5xAU-211Software, License key≥A.06.00NoneRequired option: 210NoneCustomer - 0.5 Hrs
Enable 1-port mixed-mode S-parameters212N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-212 Trial
N9914A-212 Trial
N9915A-212 Trial
N9916A-212 Trial
N9917A-212 Trial
N9918A-212 Trial
N9950A-212 Trial
N9951A-212 Trial
N9952A-212 Trial
N991x/5xAU-212Software, License key≥A.07.50NoneRequired options: 210 and 211NoneCustomer - 0.5 Hrs
TDR cable measurements215N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-215 Trial
N9914A-215 Trial
N9915A-215 Trial
N9916A-215 Trial
N9917A-215 Trial
N9918A-215 Trial
N9950A-215 Trial
N9951A-215 Trial
N9952A-215 Trial
N991x/5xAU-215Software, License key≥A.08.00NoneNoneNoneCustomer - 0.5 Hrs
Vector voltmeter application308N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-308 Trial
N9914A-308 Trial
N9915A-308 Trial
N9916A-308 Trial
N9917A-308 Trial
N9918A-308 Trial
N9950A-308 Trial
N9951A-308 Trial
N9952A-308 Trial
N991x/5xAU-308Software, License key≥A.06.00None


Optional options: 210 and 211

– With Option 308: 1-port cable trimming

– With Options 308 and 210: 1-port cable trimming, 2-port transmission

– With Options 308, 210, and 211: 1-port cable trimming, 2-port transmission, A/B and B/A

Note: A/B and B/A measurements require an external source.

NoneCustomer - 0.5 Hrs
Spectrum Analyzer
Extended Range Transmission Analysis (ERTA)209N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-209 Trial
N9914A-209 Trial
N9915A-209 Trial
N9916A-209 Trial
N9917A-209 Trial
N9918A-209 Trial
N9950A-209 Trial
N9951A-209 Trial
N9952A-209 Trial
N991x/5xAU-209Software, License key≥A.08.00None

Required option: 233 and 210

Optional options: 235 & 307

*Option 235: The optional pre-amplifier is only necessary on the FieldFox being used as the receiver.

* Option 307: GPS is only necessary for optimizing measurement dynamic range for high loss devices and is not necessary for basic operation.

Requires 2 FieldFoxes

NoneCustomer - 0.5 Hrs
Spectrum analyzer function233N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-233 Trial
N9914A-233 Trial
N9915A-233 Trial
N9916A-233 Trial
N9917A-233 Trial
N9918A-233 Trial
N9950A-233 Trial
N9951A-233 Trial
N9952A-233 Trial
N991x/5xAU-233Software, License key≥A.06.00NoneNoneNoneCustomer - 0.5 Hrs
Pre-amplifier function235N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-235 Trial
N9914A-235 Trial
N9915A-235 Trial
N9916A-235 Trial
N9917A-235 Trial
N9918A-235 Trial
N9950A-235 Trial
N9951A-235 Trial
N9952A-235 Trial
N991x/5xAU-235Software, License key≥A.06.00NoneRequired option: 233NoneCustomer - 0.5 Hrs
Interference analyzer and spectrogram application236N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-236 Trial
N9914A-236 Trial
N9915A-236 Trial
N9916A-236 Trial
N9917A-236 Trial
N9918A-236 Trial
N9950A-236 Trial
N9951A-236 Trial
N9952A-236 Trial
N991x/5xAU-236Software, License key≥A.06.00NoneRequired option: 233NoneCustomer - 0.5 Hrs
Spectrum analyzer time gating238N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-238 Trial
N9914A-238 Trial
N9915A-238 Trial
N9916A-238 Trial
N9917A-238 Trial
N9918A-238 Trial
N9950A-238 Trial
N9951A-238 Trial
N9952A-238 Trial
N991x/5xAU-238Software, License key≥A.07.00NoneRequired option: 233NoneCustomer - 0.5 Hrs
Channel Scanner312N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-312 Trial
N9914A-312 Trial
N9915A-312 Trial
N9916A-312 Trial
N9917A-312 Trial
N9918A-312 Trial
N9950A-312 Trial
N9951A-312 Trial
N9952A-312 Trial
N991x/5xAU-312Software, License key≥A.08.15None
Required option: 233
NoneCustomer - 0.5 Hrs
Real-time spectrum analyzer350N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-350 Trial
N9914A-350 Trial
N9915A-350 Trial
N9916A-350 Trial
N9917A-350 Trial
N9918A-350 Trial
N9950A-350 Trial
N9951A-350 Trial
N9952A-350 Trial
N991x/5xAU-350Software, License key≥A.09.53NoneRequired option: 233Old CPU, must have new CPU2Customer - 0.5 Hrs
I/Q Analyzer351N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-351 Trial
N9914A-351 Trial
N9915A-351 Trial
N9916A-351 Trial
N9917A-351 Trial
N9918A-351 Trial
N9950A-351 Trial
N9951A-351 Trial
N9952A-351 Trial
N991x/5xAU-351Software, License key≥A.10.15NoneRequired option: 233Old CPU, must have new CPU2Customer - 0.5 Hrs
Indoor and outdoor mapping352N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-352 Trial
N9914A-352 Trial
N9915A-352 Trial
N9916A-352 Trial
N9917A-352 Trial
N9918A-352 Trial
N9950A-352 Trial
N9951A-352 Trial
N9952A-352 Trial
N991x/5xAU-352

Software, License key

≥A.11.50NoneRequired options: 233, 307, and at least one of 312, 360, 370, 377 or 378.Old CPU, must have new CPU2Customer - 0.5 Hrs
Analog Demodulation355N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-355 Trial
N9914A-355 Trial
N9915A-355 Trial
N9916A-355 Trial
N9917A-355 Trial
N9918A-355 Trial
N9950A-355 Trial
N9951A-355 Trial
N9952A-355 Trial
N991x/5xAU-355Software, License key≥A.08.15NoneRequired option: 233NoneCustomer - 0.5 Hrs
Noise Figure (NF)356N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-356 Trial
N9914A-356 Trial
N9915A-356 Trial
N9916A-356 Trial
N9917A-356 Trial
N9918A-356 Trial
N9950A-356 Trial
N9951A-356 Trial
N9952A-356 Trial
N991x/5xAU-356Software, License key≥A.10.30NoneRequired options 233, 235 and 309Old CPU, must have new CPU2Customer - 0.5 Hrs
EMF measurements358N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-358 Trial
N9914A-358 Trial
N9915A-358 Trial
N9916A-358 Trial
N9917A-358 Trial
N9918A-358 Trial
N9950A-358 Trial
N9951A-358 Trial
N9952A-358 Trial
N991x/5xAU-358Software, License key≥A.11.50None

Required options: 233

Optional options: 235


*Also requires triaxial antenna

Old CPU, must have new CPU2Customer - 0.5 Hrs
Over-the-Air (OTA) LTE FDD370N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-370 Trial
N9914A-370 Trial
N9915A-370 Trial
N9916A-370 Trial
N9917A-370 Trial
N9918A-370 Trial
N9950A-370 Trial
N9951A-370 Trial
N9952A-370 Trial
N991x/5xAU-370Software, License key≥A.11.00NoneOption 233, 307. Recommend 235Old CPU, must have new CPU2Customer - 0.5 Hrs
Over-the-Air (OTA) 5GTF377N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-377 Trial
N9914A-377 Trial
N9915A-377 Trial
N9916A-377 Trial
N9917A-377 Trial
N9918A-377 Trial
N9950A-377 Trial
N9951A-377 Trial
N9952A-377 Trial
N991x/5xAU-377Software, License key≥A.11.00NoneOption 233, 307. Recommend 235Old CPU, must have new CPU2Customer - 0.5 Hrs
Power Measurements
USB power sensor meas, versus frequency208N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-208 Trial
N9914A-208 Trial
N9915A-208 Trial
N9916A-208 Trial
N9917A-208 Trial
N9918A-208 Trial
N9950A-208 Trial
N9951A-208 Trial
N9952A-208 Trial
N991x/5xAU-208Software, License key≥A.07.50NoneRequired option: 302NoneCustomer - 0.5 Hrs
External USB power sensor support302N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-302 Trial
N9914A-302 Trial
N9915A-302 Trial
N9916A-302 Trial
N9917A-302 Trial
N9918A-302 Trial
N9950A-302 Trial
N9951A-302 Trial
N9952A-302 Trial
N991x/5xAU-302Software, License key≥A.06.00NoneUse with power sensor. List of compatible sensors available from www.keysight.com/find/usbsensorsforfieldfoxNoneCustomer - 0.5 Hrs
Built-in power meter function310N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-310 Trial
N9914A-310 Trial
N9915A-310 Trial
N9916A-310 Trial
N9917A-310 Trial
N9918A-310 Trial
N9950A-310 Trial
N9951A-310 Trial
N9952A-310 Trial
N991x/5xAU-310Software, License key≥A.06.00NoneNoneNoneCustomer - 0.5 Hrs
Enable pulse measurement capability330N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-330 Trial
N9914A-330 Trial
N9915A-330 Trial
N9916A-330 Trial
N9917A-330 Trial
N9918A-330 Trial
N9950A-330 Trial
N9951A-330 Trial
N9952A-330 Trial
N991x/5xAU-330Software, License key≥A.07.26NoneUse with peak power sensor. List of compatible sensors available from www.keysight.com/find/usbsensorsforfieldfoxNoneCustomer - 0.5 Hrs
System Features
Remote control capability030N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-030 Trial
N9914A-030 Trial
N9915A-030 Trial
N9916A-030 Trial
N9917A-030 Trial
N9918A-030 Trial
N9950A-030 Trial
N9951A-030 Trial
N9952A-030 Trial
N991x/5xAU-030Software, License key≥A.06.00NoneRequires an iOS deviceNoneCustomer - 0.5 Hrs
GPS receiver function307N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-307 Trial
N9914A-307 Trial
N9915A-307 Trial
N9916A-307 Trial
N9917A-307 Trial
N9918A-307 Trial
N9950A-307 Trial
N9951A-307 Trial
N9952A-307 Trial
N991x/5xAU-307Software, License key≥A.06.00NoneUse with external GPS antenna. Recommended GPS antenna such as N9910X-825NoneCustomer - 0.5 Hrs
DC bias variable-voltage source function309N9913A
N9914A
N9915A
N9916A
N9917A
N9918A
N9950A
N9951A
N9952A
N9913A-309 Trial
N9914A-309 Trial
N9915A-309 Trial
N9916A-309 Trial
N9917A-309 Trial
N9918A-309 Trial
N9950A-309 Trial
N9951A-309 Trial
N9952A-309 Trial
N991x/5xAU-309Software, License key≥A.06.00NoneNoneNoneCustomer - 0.5 Hrs

For more information about Keysight Fieldfox series, please visit FieldFox Handheld RF and Microwave Analyzers.


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