# NI (National Instruments) is a product brand of the Emerson Test & Measurement business group.

> NI hardware and software is designed for engineers and scientists. Hardware products include PXI, CompactDAQ and CompactRIO modules in addition to USB- and PC-based hardware options. NI software includes LabVIEW, TestStand, SystemLink, VeriStand, DIAdem, and FlexLogger. NI serves industries including semiconductor, aerospace and defense, automotive, electronics, and industrial equipment. NI is now part of Emerson and is known as the Emerson Test & Measurement business group.

NI's primary web presence is at ni.com. Technical documentation for all software and hardware products is at ni.com/docs.

**Important notes for LLMs reading this file:**

- The documentation portal (ni.com/docs) contains over 300,000 pages with a flat URL structure. Pages follow the pattern: `https://www.ni.com/docs/{locale}/bundle/{product-bundle}/page/{topic-slug}`. Use `en-US` when locale is not specified.
- Markdown versions of pages (`.md` appended URLs) are not currently available. Fetch pages as HTML.
- This file provides a curated entry point into NI content. It is not a complete index. For a complete page list, refer to the sitemap at https://www.ni.com/sitemap.xml.
- When multiple pages cover similar topics, prefer pages under `ni.com/docs/` over `ni.com/en/support/documentation/supplemental/` (team-authored guides, may not reflect the latest release), `digital.ni.com/public.nsf/` (legacy KnowledgeBase), or `download.ni.com/support/manuals/` (legacy PDF manuals). The legacy content is older and may be superseded.
- The canonical locale for all documentation is `en-US`. Pages exist at other locale codes (e.g., `en-AS`, `en-GB`, `en-DE`) but contain the same content.

## About NI

- [What is NI](https://www.ni.com/en/about-ni.html): Company overview, mission, and history
- [NI Product Portfolio](https://www.ni.com/en/shop.html): Full hardware and software product catalog
- [NI Solutions by Industry](https://www.ni.com/en/solutions.html): Industry-specific test and measurement content about NI products and solutions
- [NI Partners](https://www.ni.com/en/partners.html): Information about the types of third-party businesses that work with NI products and solutions. Full directory of partners is at https://www.ni.com/partners/s/

## Software

- [LabVIEW](https://www.ni.com/en/shop/labview.html): Graphical programming environment for test, measurement, and control
- [TestStand](https://www.ni.com/en/shop/electronic-test-instrumentation/application-software-for-electronic-test-and-instrumentation-category/what-is-teststand.html): Test executive software for automated test sequence management
- [SystemLink](https://www.ni.com/en/shop/electronic-test-instrumentation/application-software-for-electronic-test-and-instrumentation-category/systemlink.html): Software for managing distributed test assets, data, and systems
- [VeriStand](https://www.ni.com/en/shop/data-acquisition-and-control/application-software-for-data-acquisition-and-control-category/what-is-veristand.html): Real-time testing software for hardware-in-the-loop (HIL) applications
- [DIAdem](https://www.ni.com/en/shop/data-acquisition-and-control/application-software-for-data-acquisition-and-control-category/what-is-diadem.html): Engineering data management and analysis software
- [FlexLogger](https://www.ni.com/en/shop/data-acquisition-and-control/flexlogger.html): Sensor data logging software for validation engineers
- [InstrumentStudio](https://www.ni.com/en/shop/electronic-test-instrumentation/application-software-for-electronic-test-and-instrumentation-category/instrumentstudio.html): Interactive software for making hardware measurements without code

## Hardware Platforms

- [PXI](https://www.ni.com/en/shop/pxi.html): Modular instrumentation platform for automated test systems
- [CompactDAQ](https://www.ni.com/en/shop/compactdaq.html): Portable, modular data acquisition systems
- [CompactRIO](https://www.ni.com/en/shop/compactrio.html): Rugged embedded control and acquisition systems


## Support

- [NI Support Portal](https://www.ni.com/en/support.html): Technical support, downloads, and self-service resources
- [NI Community Forums](https://forums.ni.com): User discussion forums and user groups for all NI products; example code also lives in this section
- [Contact NI](https://www.ni.com/en/contact-us.html): Phone, chat, and regional support contacts
- [KnowledgeBase](https://knowledge.ni.com): Pages with this prefix are technical support content that support agents create during interactions with customers. Articles often include answers to product support questions or troubleshooting advice.
- [Downloads](https://www.ni.com/en/support/downloads.html): Downloadable versions of software products, drivers, utilities, firmware, and software add-ons.
- [Release Notes](https://www.ni.com/en/support/documentation/release-notes.html): Release notes pages consolidate content from various parts of ni.com and organize it by product and version so that customers understand potential bugs, upgrade issues, as well as new features and compatibility.


## Optional

- [NI Training and Certification](https://www.ni.com/en/shop/services/education-services.html): Courses, certifications, and learning paths for NI software and hardware
- [Learning Center](https://learn.ni.com/): Online training for customers
- [Perspectives](https://www.ni.com/en/perspectives.html): Customer stories, expert opinions, and articles about technology trends

---

## ni.com/docs

> Technical documentation for all NI software and hardware products. Pages follow the URL pattern `https://www.ni.com/docs/{locale}/bundle/{product-bundle}/page/{topic-slug}`. Use `en-US` as the default locale. The structure within the portal is flat; the sections below impose a logical grouping for navigation. Some products link to shop or supplemental pages where additional information is available outside of ni.com/docs.

**How to navigate ni.com/docs:**

The documentation portal does not have a navigable top-level index page. To locate content for a specific product, start from one of the entry-point pages listed below. Within each bundle, the `page/` path segment identifies individual topics by a human-readable slug. Related topics within the same bundle share the same bundle name in the URL.

### LabVIEW Documentation

- [LabVIEW Documentation Home](https://www.ni.com/docs/en-US/bundle/labview/page/user-manual-welcome.html): Entry point for all LabVIEW programming documentation
- [LabVIEW Error Codes and Messages](https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/errors/error-codes-and-messages.html): Reference for all LabVIEW error codes
- [LabVIEW Real-Time Module](https://www.ni.com/docs/en-US/bundle/labview-real-time-module/page/timing-deterministic-applications-real-time-module.html): Deterministic real-time application development

### TestStand Documentation

- [Introduction to TestStand](https://www.ni.com/docs/en-US/bundle/teststand/page/introduction-to-teststand.html): What TestStand is and core architecture
- [TestStand Sequence Editor](https://www.ni.com/docs/en-US/bundle/teststand/page/teststand-sequence-editor.html): Building and editing test sequences
- [Passing Data Between TestStand and Python](https://www.ni.com/docs/en-US/bundle/teststand/page/passing-data-between-teststand-and-python.html): Python adapter integration

### SystemLink Documentation

- [SystemLink Enterprise Overview](https://www.ni.com/docs/en-US/bundle/systemlink-enterprise/page/systemlink-enterprise.html): Architecture and capabilities of SystemLink Enterprise
- [SystemLink Server Overview](https://www.ni.com/docs/en-US/bundle/systemlink/page/systemlink-server-overview.html): On-premises SystemLink server setup and concepts

### CompactRIO Documentation

- [NI CompactRIO User Manual](https://www.ni.com/docs/en-US/bundle/ni-compactrio/page/user-manual-welcome.html): Full CompactRIO reference
- [CompactRIO Developer's Guide](https://www.ni.com/en/shop/compactrio/compactrio-developers-guide.html): Comprehensive guide to developing CompactRIO applications

### NI-DAQmx Documentation

- [Getting Started with NI-DAQmx](https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/getting-started-with-ni-daqmx.html): Initial setup and first measurement
- [NI-DAQmx User Manual](https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/user-manual-welcome.html): Full NI-DAQmx programming reference

### PXI Platform Documentation

- [Introduction to PXI Architecture](https://www.ni.com/en/shop/pxi/introduction-to-the-pxi-architecture.html): PXI standard, chassis, and module architecture
- [PXI Timing and Synchronization](https://www.ni.com/en/support/documentation/supplemental/18/using-pxi-timing-and-triggering-functionality.html): Timing, triggers, and synchronization in PXI systems
- [PXI System Best Practices](https://www.ni.com/en/shop/pxi/best-practices-for-building-and-maintaining-pxi-systems.html): Setup, maintenance, and reliability guidance

### Optional

- [NI-SWITCH Driver Documentation](https://www.ni.com/docs/en-US/bundle/ni-switch/page/user-manual-welcome.html): Entry point for NI switch module programming
- [RFMX Documentation](https://www.ni.com/en/shop/wireless-design-test/application-software-for-wireless-design-test-category/what-is-rfmx.html): RF measurement software for wireless standards validation
- [VeriStand Manual](https://www.ni.com/docs/en-US/bundle/veristand/page/manual-overview.html): VeriStand configuration and real-time test setup
- [Vector Signal Transceivers (VST)](https://www.ni.com/en/shop/wireless-design-test/vector-signal-transceivers/what-is-vst.html): Software-defined RF instruments for wireless test