you put your analog video into the AJA I/O. You launch the AJA I/O Pro Control Panel, and select your input (composite or component via the INPUT tab). Now, take one BNC cable, and come out of the SDI output of the AJA I/O, and go into the HD Input 1 of your Kona 3. Make sure that Input 1 is selected in your Kona Control Panel. That's it. You are now using the I/O to convert your analog source to SDI, and the SDI source now goes into your Kona 3. I do this all day long. You can use this method to UPCONVERT to HD as well.