Hi Boris,
When you double click on the "Write to LabVIEW Measurement File.vi" a
configuration window appears. In this window one of the options you can
select is "Save to series of files (multiple files)". Once this option
is selected, you can click the "Settings..." button and another window
appears. Under the "File Termination" area you can specify when the VI
ends one measurement file and starts another. One of the ways to
determine when this should happen is based on file size in kiloBytes.
Once this file size has been reached, the VI will stop the current file
and create a new file with the name parameters you specify.
Thanks Boris, hope this helps.
DWeiland
Applications Engineer
National Instruments
www.ni.com/support
Dan Weiland