TDM File Having All Channels As "Noname"

Updated Jan 4, 2019

Reported In


  • DIAdem

Issue Details

I have opened/imported an TDM file into the data portal in my DIAdem but all the channels are named "Noname" and no data is present in them.


The NI Datafinder indexes only the .TDM files present in the search area of the Navigator window. This indexing process requires both the .TDM file and its corresponding .tdx file to be present in the same folder which is added as a search area. To understand the significance of these files refer to TDM file format.

Adding Folder as a search area

Follow the below steps to add the folder containing the .TDM and .tdx file to the search area :

 1. Navigate to your folder under the Navigator window, right click on the folder and select Add Search Area.

2. Click OK in the following dialog boxes to complete the indexing process.

3. Once the folder has been indexed, it will be available in the navigator window with a blue icon.

4. Drag and drop the .TDM file into the dataportal to view the data.

Note: While copy pasting the .TDM file, make sure that the corresponding .tdx is also copy pasted to the destination. In case the .tdx file is missing the .TDM file will not be properly indexed which again lead to all channels being named "Noname". A orange coloured icon of .TDM file indicates that it is correctly indexed, while a blue icon implies incorrectly indexed.

Additional Information

The TDM file format is the National Instruments file format for saving measurement data. The TDM file format saves the signals that the measurement hardware acquires the bulk data and the meta data the descriptive data, in separate files. Meta data could be the name and unit of a measurement channel and the name of the test engineer. The meta data is saved in the XML format (Extensible Markup Language) in a file with the .tdm extension. The bulk data are saved in a compact binary form in a file with the extension .tdx.


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