how do i create a limit mask from an existing waveform?

[stew j]

I want to create a limit mask by capturing a "good" waveform and setting limits around that waveform. is there a way to do this automatically? I have looked at the examples, but individually entering the limits manually would be impractical.

[vijayasiva]

Using clip function in function/Analyze/signal processing/time domain/Y[i]=Clip{X[i]}.vi you can create limit mask around your waveform.

[stew j]

not quite what i was looking for, i need to set a limit around every point of a waveform so i can compare other waveforms to the one the limits were set around. simply adding and subtracting a tolerance from the y-vales to produce a max and min waveform dosen't work as i need to have a tolerance in phase aswell. so basically i need to produce a "pass band" around a waveform.