Limit testing on frequency/band power (octave analysis) data

[arnold_w]

In the following message I'm referring to the VI attached in Message 8. I have pretty much copied the VI into my LabVIEW 8.2 project and I have noticed that if I connect the error out pin from the Limit Testing VI I get the following error:

Error -20315 occurred at NI_MABase.lvlib:ma_Check Waveform Timing.vi

Possible reason(s):

Analysis: The waveform dt parameter is <= 0.

Why is that? Was a negative dt parameter allow in LabVIEW 7.0 but not in LabVIEW 8.2?

Also, I see some "floating" (or unconnected) numerical constants in the VI (see attached picture). Are these constants useful or should they be deleted?

Message Edited by arnold_w on 08-28-2008 08:08 AM

[unclebump]

I don't believe the contants are required. I think your error is coming from just above them with the -1,00 wired to the dt terminal. On my computer, that constant shows -1.00. Maybe you can't have the comma in the value wired to the dt terminal on the build waveform. I ran the vi in version 8.6 and it worked properly.

[arnold_w]

I think the -1,00 vs -1.00 difference is simply a matter of regional settings. In Denmark, where I'm located, we use commas instead of dots and, in fact, the numeric constant doesn't allow me to type a dot. I have attached a VI where the problem occurs. I simply took the VI in Message 8 and added an indicator to the error out pin on the Limit Test VI. Can you please test and see if you get the same result as I do?

[arnold_w]

Ok, thanks anyways. I wouldn't have succeeded with this project without your help so I am extremely grateful anyways.