John: Check the Agilent web site at http://www.home.agilent.com/agilent/techSupport.jspx?pid=1000001384%3Aepsg%3Apro&pageMode=MN&cc=US&lc=eng for a pdf of the 5087A manual. Colin ____________________________________________________________________________________ TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV. http://tv.yahoo.com/