The decisive TDMS file size when running.

I have a request where the .tdms file can grow very quickly, due to the amount of stored data - 7 channels of data acquisition in 50 000 samples dry.

I want to determine when the file has reached about 2 GB and close the .tdms file and create a new one with a different/timestamp name.  I want to break these files due to portability problems.

It is, how to determine the size of the .tdms file?  When I try to give the Sub - VI "to get the size of the file" the .tdms, a GPIB controller file path must be in error of the charge occurs.  Also, the refnum of the tdms file is not the same as the file refnums, so the Subvi "get file pointer" will not accept the PDM refnums.

I could probably calculate somehow what is happening in the PDM file, but that seems to be a workaround and will not exact due to the header information.

You can't get the size directly from the refnum file, but you can probably still get the size another way. Use the file/directory information of the pallet of Advanced File i/o. It takes a path as input, not a refnum. This should give a specific semi file size value, although it will be possible that there is data to cache that has not yet been emptied to the file. Yet, when you talk about the file sizes in the range of 2 GB, it should be close.

It is roughly the same thing that I look in Windows Explorer as the TDMS file size expands as it is written.

Tags: NI Software

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