Hi Richard,
Thanks for your example. It's really what I'm looking for. I'd tried your examples (with minor modification) on it's own and it works as it should be, where, the files are saved on the time intervals specified. However, when I combined your vi with my data acquisition vi the file saving will not works until I stop the data acquisition. I think it has something to do with the different loops but I'm not sure how to correct it.
Could you or anyone please help me to solve this problem.
I attached both vis for you to look at.
TQ