Thank you for the quick reply. Changing the Source control to Ch 2 on the Getting Started vi does not work. I believe the reason is easily seen by looking at the block diagram of the tktds1k2k Example vi. It is seen that the source input goes to the Config Edge Trig vi and the Rd wvfrm to array vi. Note that it does not go to the Vertical vi, so this vi only sets Ch 1 by default. I want the trigger selection to be separate from the channel selection. So I created another control for both the vertical vi and the rd wvfrm to array vi, and the original source control now only goes to the config edge trig vi. In order to do this I opened the Vertical vi and wired its source control to an unused terminal. Thus in the example vi the same control goes t
o this new input terminal on the vertical vi and to the source input on the rd wvfrm to array vi. It seems this should let me display either channel. But it doesn�t work when I try to display ch 2. I hope I am missing something easy.
