>Alan, I've seen you write this several times. My TDS 3034B has >an external trigger - it just happens to be on the back. >I can't believe you haven't looked ;-) Oh, I have looked. I have the original TDS3034, so this an improvement they have made on the B series. they must have had a few complaints about it. Thanks for straightening me out on that. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu