DIAdem 9.0 and tdms

[OHC]

Hi there,

Does someone know, if DIAdem 9.0 can open the tdms format?

If not: Who knows a good way to migrate the *.tdms- to *.dat-format?

thanks for the help

Chris

[Brad_Turpin]

Hi Chris,

DIAdem 9.0 can not open the TDMS file format, since TDMS was invented several years later and in fact DIAdem 9.0 didn't support DataPlugins either.  Your two choices for converting frorm TDMS to DAT are to run a LabVIEW VI or a later version of DIAdem.  It would also be an option to convert to TDM, and in that case your options also include MeasurementStudio and CVI and even the free downloadable TDM DLL.

The easiest solution would be to download an evaluation version of DIAdem 2011, which can still save DAT files and whose saved TDM files should still load in DIAdem 2009.

Why are you stuck with DIAdem 9.0?  That was something like 7 years ago.

Brad Turpin

DIAdem Product Support Engineer

National Instruments

[OHC]

Hi Brad,

thanks for your fast answer:

Question: Do you know how to migrate TDMS to .dat in LabVIEW? I wrote a VI, which is working, but maybe i can relize it with DataPlugin? Is it posible to use DataPlugin for this migration?

Yes its not me who is using Diadem 9.0. I need it for a project at my workingplace at the university... At home I have the actual student edition...

thanks a lot

Yours

Chris

[Brad_Turpin]

Hi Chris,

Yes, you can use the DAT DataPlugin and the Storage VIs in LabVIEW to convert the TDMS data file, but another probably easier option would be to use an older version of the LabVIEW DIAdem Connectivity VIs that still had the DAT File I/O palette in it.  In fact, I think those VIs actually shipped on the DIAdem 9.0 CD, I'm sure they shipped on the DIAdem 8.1 CD.

Brad Turpin

DIAdem Product Support Engineer

National Instruments

[OHC]

Hi Brad,

Thanks again 😃 I donwnoaded the latest LabVIEW DIAdem Connectivity VIs 3.0.2

http://digital.ni.com/public.nsf/allkb/8F62D3BA9DDB9E838625777D0072E06A

It says its not working for LV-2010 and later, but its still possibly to open the llbs and to use the VIs. I played a little bit with it and I think this will work for me 😃

If not I will try your second suggested way with the dat-dataplugin...

Thanks alot Brad

Chris

[OHC]

Hi Brad,

maybe you can help me again...

If I open a *.DDF file with open data storage, followed by Get Properties [File], followed by Get Properties [Channel Group] up to Get Properties [Channel].

Now If I want to read the properties maximum and minimum of each channel in each channel group of a file, then I can read only the Values of maximum and minimum of the first channel. The others are always zero.

If I open with diadem it is not zero...

I puted a minimal example jpg in the attachment.

Thanks

Chris 

[Brad_Turpin]

Hi Chris,

DIAdem calculate the Minimum and Maximum property of each channel it loads, so there's a good chance that those other Minimum and Maximum properties really are 0 in the data file.  That's confusing for your purposes but quite useful for data inside DIAdem.  You can check this in two ways

1) Index the file with the DataFinder and look at the channel properties in the NAVIGATOR property table (not the DataPlugin property table)

2) Load the file with the LabVIEW example that uses the Storage VIs to open the file in a Tree view and look at the channel property table

Brad Turpin

DIAdem Product Support Engineer

National Instruments