Missing functionality if storing TDSM from LabVIEW

In DIAdem File Browser window is selected a file from DIAdem 11.0 Examples directory. File FFT_Expl_1 has icon with „tree pictogram“ and „tree pictogram“ can be expanded to see content of file (Time, Oscillation), bellow of File Browser is displayed many file properties. Anyway these properties are not displayed in DataPortal area?!? See picture 1.
Pict. 1
If I click on the file content in tree hiearchy channel Oscillation I can see properties for this channel and small graph with the signal preview. See picture 2.
Pict. 2
To make my own data I have used examples from LabVIEW 8.6. One of these is on the picture 3 TDMS - Express write data (time and frequency domain).vi.
Pict. 3
Every time I create TDMS data from LabVIEW 8.6 (it doesn’t matter which example I use) I see in DIAdem File Browser instead of tree icon the question mark icon?!? The question mark icon cannot be expanded by clicking on it?!? Also the amount of Shown properties is significantly lower in comparison with DIADem example files. Also no signal preview is displayed?!? How to proceed with LabVIEW and TDMS function to have possibilities of DIAdem example files?
Screenshots are in attached DOC file.
Please help
Bilik
Solved!
Go to Solution.
Attachments:
TDMS problems 2.doc ‏289 KB

Hello bilik,
Thank you for the great description of your problem, the Word document with the screen shots really helps with the troubleshooting.
It looks to me as if you haven't indexed the directory where your TDMS files are stored. The "?" icon indicates that the file is not indexed. If a file is not indexed, only a subset of the properties are shown in the dialogs.
The easiest way to solve this issue is to index the directory that contains you data files (your directory icons are grey, they should be yellow). This can be done by going to the directory (or subdirectory) in the DIAdem NAVIGATOR window, and right clocking on the directory name. From the context menu, select the function "Add Search Area ..." - your directory will then be transferred to the Search Areas part of the NAVIGATOR and all the TDMS files will be indexed. At the point the files will show all the properties and the "?" will disappear.
Let me know if that helped,
Otmar
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

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Thanks

If you're trying to access information that's being displayed in the window of another application and that application has no ActiveX interface, then yes, Windows calls can be used. There's a very good example on calling DLLs that ship with LabVIEW. Open the Example Finder (Help->Find Examples) and switch to the Search tab. Enter "Call" in the search box and open the VI "Call DLL". Run the VI, select any of the examples, and click the "Open Example VI..." button. That shows you how to call a DLL.
Now, given that you have no experience in calling DLLs, have only an "understanding" of C (which to me means you have never written something like a DLL), and don't seem to know that much about what Windows functions you may need, you're going to find this route pretty difficult, especially since you have to deal with Windows API calls, which are not always that easy to do from LabVIEW.
Let me propose an alternate solution. Go over to http://www.autoitscript.com/autoit3/ and download AutoIt. This is an automation tool that allows you to automate just about anything you want. It has an ActiveX interface that you can call from LabVIEW. I've attached an example VI that shows you how to use it to get the value of a text box from one of the tabs in the computer "System Properties" control panel applet.
Attachments:
AutoIt Example (v7).vi ‏25 KB

Missing functionality if storing TDSM from LabVIEW

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