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Downloadable Vector Network Analyzer Uncertainty Calculator

Read the license agreement before downloading the Uncertainty Calculator program.
To do so, scroll down to Supporting Documentation and click License Agreement. By downloading this Uncertainty Calculator program, you agree to be bound by the terms of this license agreement. If you do not agree to all of these terms, do not download the program.

Downloading Instructions

1. Click the blue DOWNLOAD button below, then click “Vector Network Analyzer Uncertainty Calculator ( - file version x.x.x.xx)” to download the file to your computer. Save it to a directory of your preference.
2. Browse to the directory you just selected on your computer, and unzip the file. If necessary, download the free ZIP reader at:
Unzipping the file extracts three files: “VNAUncertainty.msi”, “setup.exe”, and “UncertTest.xls”.
“VNAUncertainty.msi” contains the .dll file that calculates the measurement uncertainty data. “Setup.exe” installs the .dll file, and “UncertTest.xls” displays the data.

User Instructions

1. Use your computer's Control Panel to delete the previous version of “VNAUncertainty.msi”.
2. Run “setup.exe” and follow the instructions in the setup wizard.
3. Run “UncertTest.xls” in Microsoft Excel. If necessary, follow the Excel prompts to override security blocks and enable content and macros. For example, if Excel opens the program in Protected View, click the hyperlink, "Office has detected a problem with this file ... Click for more details" and make the appropriate selections to override security blocks.
4. Activate the Uncertainty Calculator program by clicking the [Select Network Analyzer] button.
5. Follow the instructions provided in the program to display the measurement uncertainty data.

Release Date Version Version Description
2014-08-11 The Uncertainty Calculator helps you determine measurement uncertainty due to your vector network analyzer and calibration kit.

How to Download

  • See Above

How to Install

  • See Above


  • Does Not Require a License

Supporting Documentation


Installs on:


Operating System

  • Windows 8
  • Windows 7
  • Windows XP SP3
  • Windows XP SP2
  • Windows XP


  • Zip reader
  • Microsoft Excel