Due to the fact that the timestamp t(0) reference points are different in CVI and DIAdem, there is no easy way to generate a DIAdem timestamp from CVI.
I would recommend using the ANSI C date and time library functions to create a string representing the timestamp. Then you can port this string to DIAdem using the DDC library in CVI. The TTR function in DIAdem can then be used to turn this string value into a DIAdem timestamp.
Evan Prothro
RF Systems Engineer | NI