Fitting with Sine function

[GraceSun]

Hello

I've tried to fit the data which is supposed to be a Sine function with LabVIEW 7e. I found "Tone Measurements" in the analysis which tells the amplitude, phase, frequency.
The problem occurs when the data is expected to be the sine function with "offset". Actually, I have to find the way to deal with the offset. Does LabVIEW support that kind of routine?

Thanks, GraceSun

[Ankita A.]

Hi,

Can you elaborate more on the problem that occurs when the data is a sine wave with offset.

Also, you might want to try playing with "Express Filter VI" example. It can be found at the following location.
labview\examples\general\templates\Generate and Display
You can change the offset of the simulated sine wave in this example and you will notice that the tone measurements.vi still gives good results.

Regards,
Ankita A.