Nexus Metal Detectors User Manual page 5

the sensitivity to avoid some false signals.
Discrimination This knob is located at the top right side on the front of the
Control box. It sets the level of the discrimination. Rotating the
Discrimination knob to the Accept position on the scale will result in
accepting any kind of Rotating to the Reject position on the scale will result
in discriminating almost all metal targets with few exceptions relative to
very large size or extreme electrical
conductivity. Generally, the discrimination level should be set as low as is
possible; to avoid masking the smallest and deepest desired targets.
Nexus Coronado can also be used as a BEACH DETECTOR. This function
is very easy to set by only adjusting the Discrimination level slightly higher
to the Reject side untill the salt water signals turn into clicking sounds. In
the same time the Mode Toggle Switch has to be pushed in the forward
position which is the Discrimination Mode described bellow.
Ground balance This knob is used to set the balance of the Nexus
Coronado to suit the soil conditions on any given site.
Mode Toggle Switch Located under the control box and accessible from the
hand-grip, this toggle switch is used to change modes. When pushed
forward, the Nexus Coronado operates in Discrimination Mode. In the
centre position, the Nexus Coronado operates in All-Metal Mode. The final
position is for Discrimination Mode again and is spring-loaded held towards
the user to give temporary access to the Discrimination Mode. On releasing
this last position, the switch will automatically revert to the centered
position, All-Metal Mode setting.
Voltage Controlled Oscillator (VCO) toggle switch. The VCO control toggle
switch is located on the back of the Control Box above the Mode Toggle
Switch. When turned on the VCO will produce high pitch sound for the Non-
ferrous targets and low pitch sound for the Ferrous targets. The use of
VCO allows better discrimination analyze and better pin pointing of the
detected targets.
Voltage Controlled Oscilator (VCO) rotary control knob For Nexus
Coronado SGE only. It is a control potentiometer combined with on / off
switch, which unlocks (on) when turned from position 0 to greater number
on the scale and locks (off ) when it is turned back to position 0 on the
scale. Turning the VCO knob to higher numbers on the scale will define
higher pitch for the signals from non ferrous targets.
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