Where is this guy?(internal vi)

[Yukee]

Hi all,

          Today I opened a sample vi which is "Noise Waveforms and PS Density.vi" and I found an interesting nuggets, the "ADD" vi, it is LabVIEW internal vi(cannot be opened by double click), that vi is different from normal we use, it has "error in" and "error out" connectors, at beginning, I suppose, I can make that connectors out by right click menu, but fail, and I can not find it from anywhere of functions palette, and the context help seems not any help. see enclosed.

[Dennis_Knutson · Accepted solution]

It's just the regular Add function. You automatically get the error in/out when you wire in waveform data types. One cause of an error is if you attempt to add waveforms with a different dt.

[Yukee]

Oh, Yeah, it is automatically, thanks for your thread.