Hi I seem to be having problems up loading Waveform files, I posted a reply in the Switching cylinder thread in Diagnostic Discussion, I can put first File attached, When I go back to add another The Tabs have dropped behind & can't see them, I just put an explanation of a 4 channel test I ran today, I tried (& thought I succeeded) But the post is not in that discussion thread? IIs that the correct way, Can I add more than one file to a reply, How do I add Just a Waveform to the thread? Thanks Terry