Discrepancy in wf_start_time Property Display Across Different Software

Updated Dec 9, 2024

Reported In

Software

  • LabVIEW
  • DIAdem

Issue Details

The wf_start_time property in a TDMS file shows different values when viewed in LabVIEW TDMS File Viewer compared to DIAdem Data Portal or Excel. Channel data is saved in a TDMS file using LabVIEW waveform type, with the start time displayed in the wf_start_time property. LabVIEW TDMS File Viewer shows 10:00:00.290, while MATLAB and Excel Plugin show 10:00:00.291.

 

fig1.png

Solution

LabVIEW TDMS File Viewer limits the number of displayed digits to 3, showing only the first 3 digits without rounding, which results in a different value compared to other software. To change the number of displayed digits, you need to modify the relevant part of the TDMS File Viewer.vi. In DIAdem Data Portal, you can increase the number of displayed digits by selecting the wf_start_time property value.

 

Fig2.png

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