18 19DiscriminateControls which type oftargets (metal objects)the detector will reject.(pg. 28)SensitivityIncreases/decreases thedetectors response toits environment and totargets. (pg. 25)VolumeControls the maximumlevel of sound emitted bythe detector when a targetis detected. (pg. 24)ThresholdIncreases/decreases theconstant backgroundaudio produced by thedetector. (pg. 22)This control is also used toturn the detector on/off.Disc/PinpointThe Excalibur II canoperate in two differentmodes. This control allowsyou to switch betweenDisc mode and Pinpointmode. (pg. 27)It is best to only turn the detector onwhen outdoors and away from sourcesof electromagnetic interference such aspower lines, transmitters, electric fencesand phone towers. These sources maycause the detector to perform erratically,giving numerous false signals.If the detector emits an overload sound,move the coil away from any large metalobjects. Overloading is not harmful to theelectronics of the detector.Turning theDetector OnThe Threshold control is also used to turn thedetector on.Turn the control clockwise until it clicks 'on'Control PanelThe Discriminatefunction becomesactive when Discmode is selected.