Hi odiaz,
My Spanish is even worse than my French, but I'll give this a try. It looks like you have multiple LVM files, each stored over a certain time interval, perhaps every 10 minutes. I believe you're asking why the "Date" and "Time" fields so obviously present in the LVM header seem to disappear in DIAdem. If you clear the Data Portal and load only 1 LVM file, you will see the global "Date" and "Time" values from the top section of the LVM header show up in the "Storage Date" and "Storage Time" properties on the File/Root level in the Data Portal. Furthermore, the "Date" and "Time" values for each individual channel in the lower channel header section are in fact loaded into DIAdem, they're just invisible, and DIAdem doesn't use them to plot the data in VIEW or REPORT. But you can programmatically recall that information with the following code in a VBScript:
MsgBox ChnPropValGet(1, "wf_start_time")
or with the following expression in a text box in REPORT:
@@ChnPropValGet(1,"wf_start_time")@@
Let us know if that helped any,
Brad Turpin
DIAdem Product Support Engineer
National Instruments
