A method for controlling an electromechanical transmission mechanically coupled to first and second electric machines to transmit power to an output member includes determining motor torque constraints and battery power constraints. In one embodiment, the electric field causes an electron emission that is substantially straight from the cathode sub-pixel portion of the emitter line. A method of locating an underground object using the described system is also disclosed, as well as methods of measuring a flux field and translating a flux field signal of an underground object into a visual representation of the underground object on the display screen of the locating receiver. A first lower limiting value for limiting the output quantity toward the lower end is predefined as long as the actual velocity exceeds the setpoint velocity by less than a first predefined threshold value. The reflecting protrusions are respectively disposed on the top surface of the plate.