I used NI-FGEN and NI-Scope in Bender element test and i used input in square wave.I want to know how to determine the time lag or travel time between input and output wave."
I don't think NI-FGEN and NI-Scope are currently supported in the LabVIEW Real-Time environment. You might have better luck posting this question in the regular LabVIEW discussion forum.