RFmx Runtime (64-Bit) 21.5 Readme

January 2022

This file contains important information about the RFmx Runtime (64-Bit), including system requirements, and installation instructions.

System Requirements

Supported Operating Systems

Installation Instructions

Product Security and Critical Updates

Automating the Installation of NI Products

Using NI Software with Microsoft Windows 10

Legal Information

The following products are included in the RFmx Runtime (64-Bit) media. Refer to the readme of each product for information including installation, activation, new features, known issues, and bug fixes.

Application Software

  • RFmx SpecAn Runtime (64-Bit)
  • RFmx Demod Runtime (64-Bit)
  • RFmx WLAN Runtime (64-Bit)
  • RFmx for Bluetooth® Test Runtime (64-Bit)
  • RFmx NR Runtime (64-Bit)
  • RFmx LTE Runtime (64-Bit)
  • RFmx WCDMA Runtime (64-Bit)
  • RFmx TD-SCDMA Runtime (64-Bit)
  • RFmx EV-DO Runtime (64-Bit)
  • RFmx CDMA2k Runtime (64-Bit)
  • RFmx GSM Runtime (64-Bit)


  • NI-RFSG Playback Library Runtime

System Requirements

RFmx Runtime (64-Bit) has the following requirements:

  • Processor—1 GHz 64-bit (x64) processor
  • 4 GB RAM *
  • A screen resolution of 1,024 x 768
  • Windows 10, with all available critical updates and service packs

* Depending on the amount of data acquired and/or processed, a larger amount of memory may be required.

Supported Operating Systems

RFmx Runtime (64-Bit) 21.5 supports the following 64-bit operating systems:

  • Windows 10
  • Windows Server 2019
  • Windows Server 2016

Note RFmx Runtime (64-Bit) no longer supports Windows Vista/XP/7/8.1, Windows Server 2003/2008/2012, or any 32-bit Windows operating system. RFmx Runtime (64-Bit) 21.5 will not install or run on an unsupported OS. You cannot deploy or distribute applications that use RFmx Runtime (64-Bit) 21.5 to an unsupported OS. Additionally, after installing RFmx Runtime (64-Bit) 21.5, you cannot use any installers built on this computer with any version of LabVIEW, LabWindows™/CVI™, NI TestStand™, or Measurement Studio on an unsupported OS.

For more information about the changes to our OS support, visit https://www.ni.com/r/win32bitsupport.

Installation Instructions

Download the RFmx Runtime (64-Bit) installer from ni.com/downloads. NI software includes NI Package Manager to handle the installation. Refer to the NI Package Manager Manual for more information about installing, removing, and upgrading NI software using NI Package Manager.

Product Security and Critical Updates

Visit ni.com/security to view and subscribe to receive security notifications about NI products. For information about critical updates from NI, refer to Available Critical and Security Updates for NI Software.

Automating the Installation of NI Products

You can automate the installation of most NI products using command-line arguments to suppress some or all of the installer user interface and dialog boxes.

If the NI product you are installing uses Microsoft .NET 4.6.2, the .NET installer may run before any NI software installs and may require a reboot before the installation of NI software begins. To avoid a .NET reboot, install .NET 4.6.2 separately before you install NI software.

For more information about automating the installation of NI products, refer to Automating an Installer in the NI Package Manager manual.

Using NI Software with Microsoft Windows 10

Microsoft Windows 10 is the latest version of the Windows operating system and features significant changes compared to previous versions. Windows 10 introduces several new capabilities and also combines features from both Windows 7 and Windows 8. For more information about NI support for Windows 10, visit ni.com/windows10.

Legal Information


© 2019–2022 National Instruments Corporation. All rights reserved.

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

NI respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.

End-User License Agreements and Third-Party Legal Notices

You can find end-user license agreements (EULAs) and third-party legal notices in the following locations after installation:

  • Notices are located in the <National Instruments>\_Legal Information and <National Instruments> directories.
  • EULAs are located in the <National Instruments>\Shared\MDF\Legal\license directory.
  • Review <National Instruments>\_Legal Information.txt for information on including legal information in installers built with NI products.

U.S. Government Restricted Rights

If you are an agency, department, or other entity of the United States Government ("Government"), the use, duplication, reproduction, release, modification, disclosure or transfer of the technical data included in this manual is governed by the Restricted Rights provisions under Federal Acquisition Regulation 52.227-14 for civilian agencies and Defense Federal Acquisition Regulation Supplement Section 252.227-7014 and 252.227-7015 for military agencies.

IVI Foundation Copyright Notice

Content from the IVI specifications reproduced with permission from the IVI Foundation.

The IVI Foundation and its member companies make no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The IVI Foundation and its member companies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.


Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.


For patents covering the NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the NI Patent Notice at ni.com/patents.