Eugene101

Thank yo very much, this is what I was looking for.

Thank you for the reply! The connection is done through the special board that I've made. It's ok. The difference betwen channels is explainable. But I see on your screen the same curve that was exactly the subject of my question: why it has a form like this? Shouldn't it be flat? Or the level off this fluctuation is neglectable?

Hi, I'm trying to measure frequency response of an audio amp using AD2 and Audio Analyser Suite. In order to check the equipment I've measured FR diectly connecting W1 to Scope 1 & Scope 2. the picture I've receive is as follows: Looks like there's some slight non-linearity of the AD2 itself on frequencies above 3 KHz. Can it be so, or am I doing something wrong? Also, measuring a square wave at the 20KHz shows some imperfections. Is it the limitation of the scopes or the wavegen? Thank you!

Hi, in case you haven't found it yet: https://www.dropbox.com/sh/ecgo4oiw7u9o3e0/AADu20wAB4aP10wQsXyrwCpNa?dl=0 You can find link in the description to this video: