This file contains important information about NI-VISA 20.0 for macOS, including supported platforms, known issues, new features, and a partial list of bugs fixed for NI-VISA 20.0.
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 20.0 for macOS supports the following platforms:
NI-VISA for macOS currently supports the following resource types and utilities:
Note NI-VISA for macOS supports only 64-bit applications.
The following table lists the NI application software versions supported by NI-VISA:
|NI Application Software||Versions Supported by NI-VISA|
|NI LabVIEW||2017, 2018, 2019, 2020|
You can install all of your LabVIEW products—including NI-VISA—using the LabVIEW 2020 Platform media. Refer to the LabVIEW Installation Guide on the LabVIEW Platform media for installation instructions and system requirements.
To request additional LabVIEW Platform media, visit ni.com/r/media.
Note 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.
There are three main locations where NI-VISA installs files.
NI-VISA dropped support for 32-bit applications starting in 2019. Versions of this product that ship after May 1, 2019 (including NI-VISA 19.0) will not support 32-bit applications. For detailed information about 32-bit application support, visit ni.com/r/32bitsupport.
Added support for NI MAX.
Added support for 64-bit versions of LabVIEW.
Added support for the System Configuration API.
Added support for viGpibControlREN on TCPIP resources that use the VXI-11 protocol.
Improved performance of viRead for a HiSLIP resource.
Improved performance of viWrite for a HiSLIP resource.
Added support for 64-bit kernel for OS X.
Added OS X 10.7 support.
Added support for HiSLIP.
Added the VISA Interactive Control (VISAIC) stand-alone application. Refer to the NI-VISA Help for more information on the updates to VISAIC.
Added OS X 10.6 support.
Added support for 64-bit formatted I/O.
Dropped GPIB-VXI support.
Added automatic detection of LXI (TCP/IP) devices that support the mDNS and DNS-SD technologies.
Added support for the PXI/PCI Passport on the x86 architecture.
Added native support for the NI-VISA Configuration Utility on the x86 architecture.
Added support for OS X on the x86 architecture, aka Mactel.
Added support for 64-bit data transfers in register-based operations, to support the VISA 4.0 specification.
Added support for DTR/DSR flow control. The Agilent 34401A requires DTR/DSR flow control when used via Serial. Note that not all Serial port drivers on OS X support DTR/DSR. We have tested the Agilent 34401A with NI-VISA 4.0 using the Keyspan USA-19HS and verified that it works properly.
You can access the software and documentation known issues list online. For a list of known issues with NI-VISA 20.0, visit the ni.com/r/visaknownissues list on ni.com
For a list of bug fixes for NI-VISA, visit ni.com/info and enter the Info Code ni.com/r/nivisafixlist.
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