RMS

[Spring]

Dear ALL
 
H R U?
 
I'm Reading from this Link <a href="http://forums.ni.com/ni/board/message?board.id=170&amp;message.id=330761&amp;requireLogin=False" target="_blank">http://forums.ni.com/ni/board/message?board.id=170&amp;message.id=330761&amp;requireLogin=False</a>
How to calculate the RMS using the basic formulas But the RMS in my VI not same value by using this formula and RMS.VI , please look at the VI in the attachment VI.
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Thanks All


Building%20the%20RMS%20of%20the%20input%20voltage-1[1].vi:
http://forums.ni.com/attachments/ni/170/348091/1/Building%20the%20RMS%20of%20the%20input%20voltage-1[1].vi

[Pnt]

There must be a different way at math calculations.
I don't know which is more precise, but do you really need so much precision?

[Spring]

Dear All
Thank you for send to me
I need to know how the RMS.VI calculate the RMS to Calculate RMS for Half Cycle.
Thank you

[Pnt]

Do you mean <a href="http://en.wikipedia.org/wiki/Root_mean_square" target="_blank">this</a>&nbsp;?

[Kevin_S]

Hi Spring,
You're welcome to look at the implementation.&nbsp; Just double click on the Basic Averaged DC-RMS.vi and open its block diagram.
Also, you can take a look at the advanced help on the VI you're using in order to use more of the inputs for increased functionality (<a href="http://zone.ni.com/reference/en-XX/help/371361D-01/lvwave/basic_averaged_dc_rms/" target="_blank">Basic Averaged DC-RMS</a>).
I hope this helps,Kevin S.Applications EngineerNational Instruments