Thanks Carlos The latter method I did not think of but will try it.
Cheers Wayne "JuanCarlos" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Wayne, > > Looks like a sweep sine analysis should give you a good idea about the > frequency response. Make sure that you measure the input and output > signals of the circuit; this way you can just compeir RMS values and > get the frequency response. > > Another method that you may want to look into is a broad band > frequency response. Basically you send white noise to the circuit; > then you acquire the input noise and the output noise; the you > calculate the FFTs of this data and compair it; after some averaging > you get the frequency response graph of your device. LabVIEW has a VI > called Frequency Response Function that does a large part of the job; > together with the "Frequency Analysis of a Filted Design.vi" example > you can get a good idea on how to perform this test. > > I hope this helps. > > Regards, > > Juan Carlos > N.I.
