There have been numerous posts on the 82350 and other Agilent controllers that you can look at if you do a search of the forums. One can be found at http://forums.ni.com/ni/board/message?board.id=140&message.id=23403&query.id=53997#M23403. With MAX set up correctly (i.e. tulip support enabled) and the correct drivers installed, your code does not have to change if you are using VISA.