All about TDMS_INDEX Files

The TDMS_INDEX file type is primarily associated with DIAdem.

TDMS_INDEX	File extension: TDMS_INDEX
	File type:	Index file

What is a TDMS_INDEX file?

TDMS_INDEX files mostly belong to DIAdem. TDMS_INDEX files hold the Technical Data Management Streaming index used by National Instruments software.
This file stores detailed pointers and metadata for the main TDMS files. It is designed to help DIAdem and similar applications quickly locate data segments and retrieve measurement details. For example:

Indexing: Contains location pointers for data blocks.

Optimization: Speeds up navigation in large TDMS files.

Integration: Works with DIAdem and LabVIEW environments.

FilExt.com note: These files are automatically generated to support efficient data management. For more detailed technical information, visit the National Instruments website.

How to open a TDMS_INDEX file

You need a suitable software like DIAdem to open a TDMS_INDEX file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your TDMS_INDEX file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a TDMS_INDEX file directly in the browser:. Just drag the file onto this browser window and drop it.

Online TDMS_INDEX Text Viewer

Choose your .tdms_index file to analyze

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Online File Viewer

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Programs that open and convert TDMS_INDEX files:

DIAdem
See the previous paragraphs to learn more about the main application. TDMS_INDEX files are often referred to as DIAdem data files because this type of file is primarily created or used by this software.
DIAdem
A *.TDMS_INDEX file is an index file created by National Instruments' DIAdem software. It is used to improve the performance of loading and accessing data from very large *.TDMS files (Technical Data Management Streaming). The *.TDMS_INDEX file contains information about the structure and contents of the associated *.TDMS file, allowing DIAdem (and other compatible software like LabVIEW) to quickly locate specific data within the *.TDMS file without having to read the entire file. This is particularly useful when working with extremely large datasets common in data acquisition and analysis applications. This file format is classified as Index File.

TDMS_INDEX file format:

If you know the file format, you can also find out how to open or edit the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. File extension, signature and file format must match; otherwise errors will occur when the file is opened. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the TDMS_INDEX files looks like this:

The TDMS_INDEX file extension is rarely used and mainly uses a defined TDMS_INDEX format.

100% of all TDMS_INDEX files start with the bytes TDSh crucial for this file format. These files contain neither text nor words, but only data. A typical file size is 6 KB. The file type was created 10 years ago, but is still used today. The files contain the following words: TDSh and name. These files can be linked to data, tdms and signal.

Just click the "Choose your .tdms_index file to analyze" button on this page to find out what your TDMS_INDEX file is.

Technical Data for TDMS_INDEX File Extension

File classification:

Data

Related files:

tdms, lvm, daq, tdx, tdm, csv, xml

a tdms_index Index file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with TDMS_INDEX files

Associate the TDMS_INDEX file extension with the correct application.
Update your software that should actually open index files. Because only the current version supports the latest TDMS_INDEX file format. Search, therefore, e.g. on the manufacturer website after an available DIAdem update.
To make sure that your TDMS_INDEX file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .TDMS_INDEX file online - secure, fast, and no downloads needed.