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Why do I Get the Error "Incorrect File Type" when I Open a LVM File?

Primary Software: LabVIEW Development Systems>>LabVIEW Base Package
Primary Software Version: N/A
Primary Software Fixed Version: N/A
Secondary Software: LabVIEW Signal Express>>Development System

Problem:
I have created a LabVIEW Measurment (LVM) file with the Save to ASCII/LVM (LabVIEW SignalExpress) Express VI in LabVIEW 8.6 and now I cannot load the saved file. 

When I try to load the LVM file using the Load from ASCII/LVM (LabVIEW SignalExpress) Express VI  I get error "Incorrect file type"



When I try to read the file using the Read From Merasurment File.vi i get "Error 100 occurred at Read From Measurement File".

Why can't I load the LVM file that I saved?

Solution:
There is a problem with the Save to ASCII/LVM (LabVIEW SignalExpress) Express VI in LabVIEW 8.6 that causes the LVM file to be unrecognized when loaded using Load/Read LVM VIs.

This is a known issue, and the workaround is to write to ASCII file rather than LVM when using the Save to ASCII/LVM (LabVIEW SignalExpress) Express VI in LabVIEW 8.6  Another option is to use the LabVIEW SignalExpress data logging features to create logs of your signals in the .tdms file format. The logged data can then be viewed in SignalExpress, LabVIEW, Excel (using the TDM Excel Add-In) etc.

Related Links:
AE KB 49884D84: LabVIEW SignalExpresss Save to ASCII/LVM Express VI Always Appends to File in While Loop
Developer Zone Tutorial: NI TDM Data Model
Developer Zone Tutorial: TDM Excel Add-In for Microsoft Excel Download

Attachments:

RD LVM.jpg
SE LOAD LVM.jpg




Report Date: 08/26/2008
Last Updated: 10/22/2008
Document ID: 4OPAQ29K

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