Ok, I have to admit that I don't know it all, a recent reading of Socarates has convinced me of my lack of knowledge. My question to you all is....what EXACTLY does response window do? I understand "correlation time" but "response window" is hard for me to grab. I have been unsuccessful at finding decent documentation on its description in terms that I can understand. I know that it must be greater than or equal to the correlation time most of the time.....help anyone? Please.....