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FieldFox Handheld Microwave Analyzer Firmware Archive (N995xA and N996xA models)

FieldFox N995xA and N996xA firmware revisions are listed below. 


Version Release Date Notes
A.10.17 Feb 13, 2018
  • Forward Response and Reverse Response cals broken in IQA release
  • Power Sensors: newest power sensor firmware incompatible with FieldFox firmware A.10.0x and A.10.1x

Fixed with A.10.16:

  • Customer reports disconnect-reconnect failure on thermocouple power sensors
  • ERTA: Input (SrcSide) cable corr is applied to B; should be applied to R
  • DTF -- recalling .csv file that has units set to "feet" causes incorrect x axis values both on the unit and via Datalink
  • Japanese, Chinese, and Korean fonts are missing
  • System, System Configuration, Options, Show Options -- displayed options columns are mis-sorted
A.10.15 Jan 29, 2018
  • Frequency domain and time domain measurements up to 10 MHz of analysis bandwidth
  • Customize display with up to 4 simultaneous and multi-domain measurement views
  • Requires spectrum analyzer mode (not supported on model N9912A)
A.10.01 Sep 12, 2017
  • VSA Support
  • No Support for DataLink at this time. Use the A.09.64 version for DataLink Support.
A.09.64 Aug 3, 2017 Print, Select Files for Printing, can't edit the row and column fields
A.09.62 Jun 5, 2017
  • Power meter mode with peak sensor
  • Print doesn't work with CPU2 units
  • GPS C/No Averaging Feature
  • GPS 1/sec update rate
  • Add cable FSJ4-50B
  • Power Sensor U2022XA H50 and U8489A support
  • Additional calkits
  • Various Power Meter fixes, including "device clear"
A.09.60 Mar. 20, 2017 No info at this time.
A.09.57 January 27, 2017

Installer on OF SD card does not run after programing QSPI with model/serial clear

Enhanced Response calibration not working with ECal unit

FieldFox with CPU2 self-assigns IP address (169.x.x.x) when connected to network with DHCP server

Wrong data in cable file DTF cable



Release Date Version Version Description
2017-09-12 A.10.01 N9912A only

How to Download

  • Click the download button, select file and save.

How to Install

  • NOTE! Please backup all user state files to computer or USB flash drive before updating to latest firmware revision.
  • See firmware update supporting documentation for installation process.


  • Does Not Require a License

Supporting Documentation


Installs on:



  • Information Not Available

Supported Instruments

  • N991xA, N992xA, N993xA, N995xA, N996xA analyzers with CPU2