This file contains important information about NI-VISA, including supported platforms, new features, information about bug fixes, and known issues for NI-VISA 19.5.
Note: The Measurement Studio VisaNS .NET class library is being deprecated and superseded by an IVI-compliant NI-VISA .NET API. Refer to the New Features section for more information.
If you plan to use LabVIEW NXG, refer to LabVIEW NXG Support and Considerations.
NI-VISA is the NI implementation of the Virtual Instrument Software Architecture (VISA), a standard for configuring, programming, and troubleshooting instrumentation systems comprising GPIB, VXI, PXI, Serial, Ethernet, and/or USB interfaces.
NI-VISA 19.5 for Windows supports the following platforms:
While this distribution targets all of these platforms, you can run setup.exe only on the Windows variants.
1 NI software installs VC2015 Runtime and .NET 4.6.2. Windows 8.1 and Windows Server 2012 R2 require Microsoft updates to support these items. Refer to Microsoft KB2919442 and KB2919355 for more information about how to install these updates.
2 NI software is signed with a SHA-256 certificate. Windows 7 SP1, Windows Embedded Standard 7 SP1, and Windows Server 2008 R2 SP1 require Microsoft updates to support SHA-256. Refer to Microsoft KB3033929 for more information about how to install this security update.
3 NI-VISA does not support the Windows Server non-R2 editions.
Note Refer to NI-VISA Drops Support for Windows 7 (32- and 64-Bit), Windows Server 2008 R2, and All 32-Bit Windows Operating Systems in 2021 for information about future OS support.
Note In 2016, NI-VISA dropped support for Windows Vista, Windows XP, Windows Server 2003, and installations of Windows 7 without any service packs. NI-VISA 19.5 will not install or run on an unsupported OS. You cannot deploy or distribute applications that use NI-VISA 19.5 to an unsupported OS. Additionally, after installing NI-VISA 19.5, 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 for 2016, refer to Why Does My NI ADE Installer Fail on Windows XP/Vista and Windows Server 2003?.
Note Support for Windows 32-bit operating systems may require disabling physical address extension (PAE). To learn how this might affect your system and what actions you might need to take, visit ni.com/info and enter the Info Code PAESupport.
NI-VISA 19.5 supports the following application software versions, including service packs. If you are not using NI application software, refer to Microsoft Visual Studio Support.
|Application Software||Versions Supported by NI-VISA|
|LabVIEW||2016, 2017, 2018, 2019|
|LabVIEW NXG||2.0, 2.1, 3.0, 3.1, 4.0|
|LabWindows/CVI||2015 and later|
|Measurement Studio||2019 and later|
If you are using the IVI-compliant NI-VISA .NET Class Library, the .NET 4.6.2 Framework (minimum) is required. You can use the NI-VISA .NET Class Library with the Visual C# or Visual Basic .NET programming languages in any Visual Studio version that can target the .NET 4.0 Framework or later. You can use the NI-VISA .NET Class Library in 32-bit or 64-bit applications.
Note: The Measurement Studio VisaNS .NET Class Library is being deprecated and superseded by an IVI-compliant NI-VISA .NET Class Library. Refer to the New Features section for more information.
The following table lists the programming languages and Microsoft Visual Studio versions supported by this version of the VisaNS .NET Class Library. Earlier versions of NI-VISA support other application software and language versions. For more information on Visual Studio compatibility with earlier versions of VISA, refer to ni.com/info and enter the info code NETlegacydrivers. To find and download an earlier version of a driver, refer to ni.com/downloads.
|Programming Language||Visual Studio Versions Supported by VisaNS|
|.NET Framework 4.0 Languages |
(Visual C# and Visual Basic .NET)
|.NET Framework 4.5 Languages |
(Visual C# and Visual Basic .NET)
|.NET Framework 4.5.1 Languages |
(Visual C# and Visual Basic .NET)
You can install all of your LabVIEW products—including NI-VISA—using the LabVIEW 2019 Platform media.
To request additional LabVIEW Platform media, refer to the NI website.
Before you install NI-VISA 19.5, NI recommends that you uninstall any versions of VISA prior to NI-VISA 2.0.1.
After uninstalling NI-VISA, some DLLs and executables may remain in the NI-VISA directories. To complete the uninstall process, you must restart your machine.
Note: The uninstaller application does not notify you when rebooting is necessary. If you plan to reinstall NI-VISA, you always should reboot the machine after running the uninstaller.
NI automates LabVIEW NXG installation using NI Package Manager. Visit ni.com/info and enter the Info Code NIPMDownload to download NI Package Manager. Refer to the NI Package Manager Manual for more information about installing, removing, and upgrading NI software using NI Package Manager.
NI-VISA now works with Agilent/HP GPIB and VXI controller cards. To use this feature, go into MAX, select Tools»NI-VISA»VISA Options, choose the Passports tab, and enable the NiVisaTulip.dll Passport. NI-VISA automatically finds and accesses any GPIB or VXI devices. However, NI-VISA does not configure the Agilent/HP hardware; you still must do that with the Agilent/HP I/O Config utility.
If you have both NI and Agilent/HP controllers in the same system, you must configure the cards at different system addresses, such as GPIB0 and GPIB1. If both vendors try to use the same interface address, NI-VISA reports an error from viFindRsrc or VISA Find Resources.
(Windows 8.1, Windows 10) If you generate an INF file using the NI-VISA Driver Wizard, you must create and digitally sign a Windows Catalog (.cat) file before you can install the INF file on a Windows 8.1 or Windows 10 machine. For more information about digitally signing a .cat file for Windows 8.1 or later, visit ni.com/info and enter the Info Code INFWin8.
For more information about creating and signing catalog files, Microsoft has a Kernel-Mode Code Signing Walkthrough whitepaper that describes the details of this process. The generated catalog file should reference only the INF file.
Added support for LabVIEW NXG 4.0
Added support for LabVIEW NXG 3.0.
Added support for LabVIEW NXG 2.0.
Dropped support for GPIB-VXI controllers.
Updated documentation for NI-VISA .NET API, available in your Users/Public/Documents/National Instruments/NI-VISA/Documentation directory.
Improved performance of viInXX and viOutXX functions.
Added support for the industry standard API for VISA .NET as specified by the IVI Foundation in VPP 4.3.6. NI recommends this API for developing new .NET applications using NI-VISA. Support for the legacy VisaNS API will be removed in a future release. For more information about upgrading from VisaNS to the new VISA .NET API, visit ni.com/info and enter the Info Code VISANETUpgrade.
Added support for NI Linux Real-Time x64.
Added support for viMapTrigger and viAssertTrigger on PXI resources to use PXI-9 compliant trigger managers if available.
Added support for viGpibControlREN on TCPIP resources that use the VXI-11 protocol.
You can access the software and documentation known issues list online. For a list of known issues with NI-VISA 19.5, refer to the VISA Known Issues page on ni.com.
For a list of bug fixes for NI-VISA, visit ni.com/info and enter the Info Code NIVISAFixList.
Refer to the NI-VISA Help, accessible from LabVIEW by selecting Help>>LabVIEW Help, for information about NI-VISA.
Select Help>>Find Examples from LabVIEW to launch the NI Example Finder. LabVIEW examples for NI-VISA are located in the labview\examples\Instrument IO\VISA directory. You can modify an example VI to fit an application, or you can copy and paste from one or more examples into a VI that you create.
The following sections detail considerations for using LabVIEW NXG with NI-VISA.
Software support for LabVIEW NXG differs in the following ways:
NI automates LabVIEW NXG installation using a package manager. Complete the following steps to install NI-VISA for LabVIEW NXG.
View context help in LabVIEW by pressing <Ctrl-H> and hovering over an object.
Search for items using the search bar in the upper right corner of the LabVIEW window. You can also view context help for the search results.
Additional documentation is available online at ni.com/manuals.
Launch LabVIEW and click the Learning tab.
LabVIEW lessons are located in the Lessons tab, and LabVIEW Examples are located in the Examples tab. Follow the instructions in the lessons and examples.
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. However, starting with the August 2012 releases (products using NI Installers version 3.1 or later), you may need to perform additional steps before or during a silent installation of NI software.
If the NI product you are installing uses Microsoft .NET 4.0, 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 4.0 separately before you install NI software.
For more information about automating the installation of NI products, refer to the following KnowledgeBase articles:
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.
When you install NI software on Microsoft Windows 8.1, you will notice a few additional tiles in the Apps view, including shortcuts to NI application software products such as NI LabVIEW, Measurement & Automation Explorer (NI MAX), and NI Launcher. For more information about NI support for Windows 8.1, visit ni.com/windows8.
NI-VISA will drop support for Windows 7 (32- and 64-bit), Windows Server 2008 R2, and all 32-bit Windows operating systems starting in 2021. Versions of this product that ship after May 1, 2021, will not install or run on these operating systems. For detailed information about NI operating system support, visit ni.com/r/win32bitsupport.
For detailed information about NI application software product life cycles, visit ni.com/info and enter one of the following Info Codes:
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