RFmx Waveform Creator 21.3 Readme

October 2021

This file contains important information about the RFmx Waveform Creator, including system requirements, and installation instructions.


New Features

Supported Hardware

System Requirements

Supported Operating Systems

Installation Instructions


Accessing the Help

Finding Examples

Product Security and Critical Updates

Behavior Changes

Automating the Installation of NI Products

Using NI Software with Microsoft Windows 10

Legal Information


RFmx Waveform Creator provides a unified interface for creating and generating waveforms for multiple wireless standards. You can create unencrypted, unlocked IQ waveform files for playback on NI PXI RF instrumentation. Supported standards include 5G NR, LTE/LTE-Advanced, W-CDMA/HSPA+, GSM/EDGE+, TD-SCDMA, and more.

New Features

RFmx Waveform Creator 21.3 includes the following new features:

  • Support for LabVIEW 2021 (32-bit and 64-bit)
  • WLAN
    • Support for 802.11be Standard IEEE P802.11be/D1.1 compliant waveform creation
  • NR
    • Support for SSB periodicity 5, 10, 20, 40, 80, and 160 milliseconds
    • Support for xOverhead configuration as per 3GPP 38.214 specification

RFmx Waveform Creator 20.7 includes the following new features:

  • Added support to load and store signal configurations in TDMS waveform files
  • Bluetooth
    • Added waveform parameters for burst start and burst stop locations
  • LTE
    • Support for Carrier Power Spectral Density (PSD) Equalization for multicarrier signals
  • WLAN
    • Support for MIMO waveform creation for 802.11n/ac/ax/be standards on PXIe-5830/5831/5832/5840/5841.
    • Support for 802.11be Standard IEEE P802.11be/D0.3 compliant waveform creation
    • Support for sample clock rate factor
    • Support for fractional resampling
    • Support for spectrum preview display
    • Support for 2.0 waveform file format
  • 5G NR Plugin
    • Added User Configurable Resource Grid Size
    • Added Carrier Power Spectral Density (PSD) Equalization for multicarrier signals
    • Support of empty carriers in multi-carrier configurations
    • Support for non-standard modulation scheme 8-PSK in PDSCH
    • Updated 5G NR plugin to reflect the 3GPP specification updates up to December 2020
      • Added configurable modulation scheme for downlink testmodels in NR-FR2-TM2 and NR-FR2-TM 3.1
      • Added common uplink configurations for 70 MHz channel bandwidth in UL FR1
  • Added support for Carrier Allocated, Grid Size Mode, Reference Grid Size, BandwidthPart Grid Size, SSB Grid Start, SSB Grid Start, DL Test Model Modulation Type, and Carrier PSD Equalization in Batch Waveform Creation Utility of NR

RFmx Waveform Creator 20.6 includes the following new features:

  • Support for PXIe-5832
  • Support in NR for short frame duration of less than 0.5ms

Supported Hardware

The following hardware products are supported in all operating systems listed in the Supported Operating Systems section.

Vector Signal Generators

  • PXIe-5673
  • PXIe-5673E

Device-specific information about these modules is included in the NI RF Vector Signal Generators Help.

Vector Signal Transceivers

  • PXIe-5644
  • PXIe-5645
  • PXIe-5646
  • PXIe-5820
  • PXIe-5830
  • PXIe-5831
  • PXIe-5832
  • PXIe-5840
  • PXIe-5841
  • PXIe-5841 with PXIe-5655

Device-specific information about these modules is included in the NI RF Vector Signal Transceivers Help.

System Requirements

RFmx Waveform Creator 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 Waveform Creator 21.3 supports the following 64-bit operating systems:

  • Windows 10
  • Windows Server 2019
  • Windows Server 2016

Note    RFmx Waveform Creator no longer supports Windows Vista/XP/7/8.1, Windows Server 2003/2008/2012, or any 32-bit Windows operating system. RFmx Waveform Creator 21.3 will not install or run on an unsupported OS. You cannot deploy or distribute applications that use RFmx Waveform Creator 21.3 to an unsupported OS. Additionally, after installing RFmx Waveform Creator 21.3, 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 detailed information about NI operating system support, visit http://www.ni.com/r/win32bitsupport.

RFmx Waveform Creator supports the following application software versions, including service packs. You should install application software, such as LabVIEW or Microsoft Visual Studio®, before installing RFmx Waveform Creator. If you are not using NI application software, refer to Microsoft Visual Studio Support.

Application Software Versions Supported by RFmx Waveform Creator
LabVIEW 2018 SP1 f4 patch, 2019 SP1, 2020 SP1, 2021

Required Software

  • NI-RFSG 14.5 or later
  • NI-RFSG 20.7 or later (for MIMO configurations with PXIe-5830/5831/5832 in RFmx Waveform Creator for WLAN)

Microsoft Visual Studio Support

If you are using the RFmx Waveform Creator .NET Class Library, .NET Framework 4.0 (minimum) is required. The RFmx Waveform Creator .NET Class Library can be used with Visual C# or Visual Basic .NET in any Visual Studio version that can target .NET Framework 4.0 or .NET Framework 4.5.

Installation Instructions

Download the RFmx Waveform Creator 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.


  • If Windows Update is enabled, the installation process might hang if Windows Update interferes with the installation of Microsoft Visual C++ 2015 Run-Time. Visit ni.com/r/exjq43 for more information and steps to resolve this issue.
  • If you purchased this product with an NI Software Suite or NI Product Bundle, use the installation media that shipped with your purchase to install this product.
  • Use the serial number that is included with your software to activate RFmx Waveform Creator. For more information on RFmx Waveform Creator activation, refer to National Instruments Software Activation.


Select Start » National Instruments» RFmx Waveform Creator to launch the RFmx Waveform Creator.

Accessing the Help

Documentation for RFmx Waveform Creator is located at Start » National Instruments » RFmx Waveform Creator » RFmx Waveform Creator Documentation. The documentation set is composed of the following documents.

Document Format Description
RFmx Waveform Creator Help HTML/Windows Help Contains primary help content for RFmx Waveform Creator. This help file is an HTML version of a traditional user manual that includes the following information:
  • An introduction to RFmx Waveform Creator
  • How to get started with application development
  • A complete reference for all RFmx Waveform Creator programming functions and VIs
RFmx Waveform Creator 21.3 Readme HTML (this document) Contains information about supported hardware and operating systems, new features, fixed issues, and legal notices.

Finding Examples

You can access all the installed RFmx Waveform Creator examples at Start » National Instruments » RFmx Waveform Creator » RFmx Waveform Creator Examples.

For the most recent revisions of documentation and for newly released documentation, visit ni.com/manuals.

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.

Behavior Changes

The following items are the behavior changes in RFmx Waveform Creator 21.3 from RFmx Waveform Creator 20.7/20.7.1.

  • Loading IQ waveform files is no longer supported in RFmx Waveform Creator for WLAN

The following items are the behavior changes in RFmx Waveform Creator 20.0 from RFmx Waveform Creator 19.1.

  • Changed the data content of downlink NR test models from all-zero to PN23 sequence with respect to the changes in 3GPP TS 38.141v specification
  • Changed modulation scheme for downlink NR test model 3.3 to QPSK with respect to the changes in 3GPP TS 38.141-1 v16.3.0 specification
  • Changed the NR grid size for 100 MHz channel bandwidth and 240 kHz subcarrier spacing to 33.
  • Changed the NR SS/PBCH block parameters CRB Offset and Subcarrier Offset to be 3GPP specification compliant.
  • Changed the NR grid alignment for SS/PBCH block.

The following items are the behavior changes in RFmx Waveform Creator 19.1 from RFmx Waveform Creator 19.0.

  • Following configurations require recreation of waveforms in 5G new radio (NR) modulation scheme
    • Carrier aggregation due to 3GPP NR specification updates to nominal spacing
    • Downlink test models due to 3GPP NR specification updates to definitions of downlink test models
    • ACP optimized filter bandwidth is updated to avoid corrupting edge sub-carriers

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


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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

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