This is completely wrong. Basic tools that solve basic tasks are easy to learn and understand. I use spectrum analyzers to identify partial discharges in high

This is completely wrong. Basic tools that solve basic tasks are easy to learn and understand. I use spectrum analyzers to identify partial discharges in high voltage equipment. Sometimes I use a hammer. One of them require deep knowledge, with the other one I just give the equipment a whack with to see where the fault lies.