Like any scope, they measure voltage over time. The object is to make the traces stay steady, ie look smooth, and you know your joystick is constantly sending out the same signal for a given amount of deflection.
Start with the stick centered, and adjust the deadbands to keep all the axis' from jumping around at center, do this for each axis seperately. The better your stick is the less deadband you should need. Now hold your stick at different points and watch the line move. It should move off center and keep drawing a straight line. If it draws a jagged line your controller is sending out different voltages for the same stick deflection, not a good thing. You can increase the dampner to smooth this out a little, but then your just sacrificing the sharpness of your control movement to make up for a bad/worn joystick. You probably need to do some maintainence on your stick or potentiometers to get it better.
If you see any large sweeps in the scope pattern, this is what the game thinks you doing with the stick, so if your holding the stick steady and it is sweeping from top to bottom of the scope it is probably time to replace the stick. If your having problems controlling that plane on the edge of a stall, try to remember exactly where your holding the stick and use the scope while giving it all the same controll inputs and watch what happens, when your flying on the knife edge a stick spike can easily knock you right off of it. Stick spiking may also go a long way in explaining why the other guys plane is always faster then yours, as a bad case of stick spiking can also eat away at your E state.
------------------
Lake City
-lakc-