This seems like it should be such a simple measurement. I attempted to use :MEAS:TVAL? 1.5,1,CHANNEL2 in order to measure the time it takes from the scope trigger (chan1) to when chan2 wave exceeds 1.5V for the first time. This gives me an error -1073807339 (timeout).
How can I read the time that chan2 goes high vs. the trigger on chan1?