I'm not sure where to put this so mods feel free to move it as needed. I'm working on this oscilloscope trying to measure two signals from the detectors. To extract the signficiant signals, I need to use the trigger mechanism. However, the oscilloscope is not letting me (or I don't know how) apply the trigger to two channels at the same time. It has only been working with one trigger at a time. The oscilloscope type that I am using is Tektronix DPO4104. Help would be very appreciated because I've spent many hours not being able to get this to work.