What do those settings do? 

In this video I talk about the settings on detectors, aiming mainly at the Minelab GPX, SDC and GPZ series.
My aim is not to tell you what settings to run, but rather give you the knowledge to make informed decisions on settings out in the goldfields.
Now I am no Einstein so I do stumble and fluster in a few spots but I have edited in some text to make things clearer (hopefully).