How can I use the RMS.vi over more than one period?

Hi everyone,
I am using the Cycle average and RMS.VI to get the RMS value of a alternative voltage (2kHz). To acquire this signal I am using a differentiel AI of a 6225 card (at 250kS/s) and the RMS value is correct, it works fine. However from what I have understood, this VI calculates the RMS value according to only one period no matter how many samples I have acquired (2000 samples in the VI I have attached). Is this correct? If so, is ithere a way to use it over all of the 2000 samples to get a more averaged value? Or does another VI exist?
I could repeat several time an acquisition of a short number of samples (a period) and make an average but it would take some time and I have to do this with 39 other Inputs on the same card one after the other...
Thank you for your help,
User
Attachments:
Forum.vi ‏76 KB

User_1979 wrote:
....could you tell me if this VI sends a rms value of X compleat periods (even if I have send X periods and a half for example)?
It gives the RMS value of only the newest set of data.
The RMS and RMS Pt. By Pt. work for me, but it depends on how you break out that Dynamic Data from the Express VI, which was why I suggested you didn't use it - mainly because you can't tell what happens to that data when you wire it to a function and it coerces. Actually, I should say, I can't tell what happens to it. You may know, but I don't.  
In the attached screenshot, I have "made" a 2k sine wave with an amplitude of 5. The indicators show RMS value.
Richard
Attachments:
rms.gif ‏14 KB

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