How do I get AC Voltage from a DC DAQ (USB-6212)

[diarmaede]

All,

I am trying to get DC voltage using a USB-6212.  I am currently using the "Basic Average DC-RMS" function, which is giving me an RMS reading of 18VAC on the 24V signal which is probably correct for an RMS measuremen.  My Fluke meter is reading it at 23VAC.  How do I condition the signal such that my LabVIEW VAC reading matches my Fluke reading?

Thanks!

[Dennis_Knutson]

What exactly do you mean by '24V signal'? Is that peak, peak to peak? How is the fluke set?

Run your VI so that a waveform is visible. Go to Edit>Make Current Values Default. Save the VI and attach it to a post?

[diarmaede]

Yup.  Peak to peak (I think).  I'm running a Fluke 179 True RMS DMM, and it shows 24VAC when the rotary switch is set to show VAC.

- Forbes

[Dennis_Knutson]

You think? You should know something so basic. We would all know if you had done like I requested.

By the way, your meter is reading rms.