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How do I upgrade my N9933B/34B/35B/36B/37B/38B FieldFox Handheld Microwave Spectrum 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 options 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 N9933B/34B/35B/36B/37B/38B 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/Network Analysis
Reflection meas. (RL,VSWR and scalar meas.)
 
320N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-320 Trial
N9934B-320 Trial
N9935B-320 Trial
N9936B-320 Trial
N9937B-320 Trial
N9938B-320 Trial

N993xBU-320
 
Software, License key≥A.11.25None

Required option: 220

- N9938B specifically requires option 100

- Option 100 is only available on N9938B at time of purchase. It is not available as a trial/upgrade

NoneCustomer - 0.5 Hrs
Spectrum Analyzer
Extended Range Transmission Analysis (ERTA)209N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-209 Trial
N9934B-209 Trial
N9935B-209 Trial
N9936B-209 Trial
N9937B-209 Trial
N9938B-209 Trial
 

N993xBU-209Software, License key≥A.11.25None

Required option: 220

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
Tracking generator
 
220N9933B
N9934B
N9935B
N9936B
N9937B
N9938B 

N9933B-220 Trial
N9934B-220 Trial
N9935B-220 Trial
N9936B-220 Trial
N9937B-220 Trial
N9938B-220 Trial
 

N993xBU-220
 
Software, License key≥A.11.25None

None 

NoneCustomer - 0.5 Hrs
Pre-amplifier235N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-235 Trial
N9934B-235 Trial
N9935B-235 Trial
N9936B-235 Trial
N9937B-235 Trial
N9938B-235 Trial

N993xBU-235Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Interference analyzer and spectrogram236N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-236 Trial
N9934B-236 Trial
N9935B-236 Trial
N9936B-236 Trial
N9937B-236 Trial
N9938B-236 Trial

N993xBU-236Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Spectrum analyzer time gating238N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-238 Trial
N9934B-238 Trial
N9935B-238 Trial
N9936B-238 Trial
N9937B-238 Trial
N9938B-238 Trial

N993xBU-238Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Channel Scanner312N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-312 Trial
N9934B-312 Trial
N9935B-312 Trial
N9936B-312 Trial
N9937B-312 Trial
N9938B-312 Trial

N993xBU-312Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Real-time spectrum analyzer350N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-350 Trial
N9934B-350 Trial
N9935B-350 Trial
N9936B-350 Trial
N9937B-350 Trial
N9938B-350 Trial

 N993xBU-350Software, License key≥A.11.25 None NoneNone Customer - 0.5 Hrs
I/Q Analyzer
 
351N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-351 Trial
N9934B-351 Trial
N9935B-351 Trial
N9936B-351 Trial
N9937B-351 Trial
N9938B-351 Trial

N993xBU-351Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Indoor and outdoor mapping352N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-352 Trial
N9934B-352 Trial
N9935B-352 Trial
N9936B-352 Trial
N9937B-352 Trial
N9938B-352 Trial
N993xBU-352Software, License key≥A.11.50NoneNoneNoneCustomer - 0.5 Hrs
IQ Streaming353 N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-353 Trial
N9934B-353 Trial
N9935B-353 Trial
N9936B-353 Trial
N9937B-353 Trial
N9938B-353 Trial
N993xBU-353Software, License key≥A.12.31NoneRequired option: 351NoneCustomer - 0.5 Hrs
Analog Demodulation355N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-355 Trial
N9934B-355 Trial
N9935B-355 Trial
N9936B-355 Trial
N9937B-355 Trial
N9938B-355 Trial

N993xBU-355Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Noise Figure (NF)356N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-356 Trial
N9934B-356 Trial
N9935B-356 Trial
N9936B-356 Trial
N9937B-356 Trial
N9938B-356 Trial

N993xBU-356Software, License key≥A.11.25NoneRequired option: 235 and 309NoneCustomer - 0.5 Hrs
EMF measurements358N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-358 Trial
N9934B-358 Trial
N9935B-358 Trial
N9936B-358 Trial
N9937B-358 Trial
N9938B-358 Trial
 
N993xBU-358Software, License key≥A.11.50None

Required options: None
Optional options: 235


*Also requires triaxial antenna

NoneCustomer - 0.5 Hrs
EMI measurements361N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-361 Trial
N9934B-361 Trial
N9935B-361 Trial
N9936B-361 Trial
N9937B-361 Trial
N9938B-361 Trial
N993xBU-361Software, License key≥A.12.31None
NoneCustomer - 0.5 Hrs
Over-the-Air (OTA) LTE FDD370N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-370 Trial
N9934B-370 Trial
N9935B-370 Trial
N9936B-370 Trial
N9937B-370 Trial
N9938B-370 Trial

N993xBU-370Software, License key≥A.11.25NoneOption 233, 307. Recommend 235 NoneCustomer - 0.5 Hrs
Over-the-Air (OTA) LTE TDD371N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-371 Trial
N9934B-371 Trial
N9935B-371 Trial
N9936B-371 Trial
N9937B-371 Trial
N9938B-371 Trial
N993xBU-371Software, License key≥A.12.15NoneOption 307. Recommend 235NoneCustomer - 0.5 Hrs
Over-the-Air (OTA) 5GTF377N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-377 Trial
N9934B-377 Trial
N9935B-377 Trial
N9936B-377 Trial
N9937B-377 Trial
N9938B-377 Trial

N993xBU-377Software, License key≥A.11.25NoneOption 233, 307. Recommend 235 NoneCustomer - 0.5 Hrs
Over-the-Air (OTA) 5G NR378N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
N9933B-378 Trial
N9934B-378 Trial
N9935B-378 Trial
N9936B-378 Trial
N9937B-378 Trial
N9938B-378 Trial
 
N993xBU-378Software, License key≥A.11.50None

Required options: B10, 307
Optional options: 235


*FR2 frequencies above 26.5 GHz require an external mixer

NoneCustomer - 0.5 Hrs
Power Measurements
USB power sensor meas, versus frequency208N9933B
N9934B
N9935B
N9936B
N9937B
N9938B 

N9933B-208 Trial
N9934B-208 Trial
N9935B-208 Trial
N9936B-208 Trial
N9937B-208 Trial
N9938B-208 Trial

N993xBU-208Software, License key≥A.11.25NoneRequired option: 302NoneCustomer - 0.5 Hrs
USB power sensor support302N9933B
N9934B
N9935B
N9936B
N9937B
N9938B 

N9933B-302 Trial
N9934B-302 Trial
N9935B-302 Trial
N9936B-302 Trial
N9937B-302 Trial
N9938B-302 Trial

N993xBU-302Software, License key≥A.11.25NoneUse with power sensor. List of compatible sensors available from www.keysight.com/find/usbsensorsforfieldfox NoneCustomer - 0.5 Hrs
Built-in power meter310N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-310 Trial
N9934B-310 Trial
N9935B-310 Trial
N9936B-310 Trial
N9937B-310 Trial
N9938B-310 Trial

N993xBU-310Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs
Enable pulse measurement capability330N9933B
N9934B
N9935B
N9936B
N9937B
N9938B
 

N9933B-330 Trial
N9934B-330 Trial
N9935B-330 Trial
N9936B-330 Trial
N9937B-330 Trial
N9938B-330 Trial

 

N993xBU-330Software, License key≥A.11.25NoneUse with peak power sensor. List of compatible sensors available from www.keysight.com/find/usbsensorsforfieldfoxNoneCustomer - 0.5 Hrs
System Features
Remote control capability030N9933B
N9934B
N9935B
N9936B
N9937B
N9938B 

N9933B-030 Trial
N9934B-030 Trial
N9935B-030 Trial
N9936B-030 Trial
N9937B-030 Trial
N9938B-030 Trial
 

N993xBU-030Software, License key≥A.11.25NoneRequires an iOS deviceNoneCustomer - 0.5 Hrs
GPS receiver function307N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-307 Trial
N9934B-307 Trial
N9935B-307 Trial
N9936B-307 Trial
N9937B-307 Trial
N9938B-307 Trial

N993xBU-307Software, License key≥A.11.25NoneUse with external GPS antenna. Recommended GPS antenna such as N9910X-825NoneCustomer - 0.5 Hrs
DC bias variable-voltage source309N9933B
N9934B
N9935B
N9936B
N9937B
N9938B

N9933B-309 Trial
N9934B-309 Trial
N9935B-309 Trial
N9936B-309 Trial
N9937B-309 Trial
N9938B-309 Trial

 

N993xBU-309Software, License key≥A.11.25NoneNoneNoneCustomer - 0.5 Hrs

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

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