battery check has been done, turn the toggle switch back down to
allow the RGB to indicate metal targets.
* Keeping the RGB in battery check mode for a long time will
drain the batteries.
Holding the Nexus Standard MP V3 with the coil well above
ground level, adjust the Threshold knob to obtain a faint audible
tone setting. Adjust the Volume knob to set a comfortable level
(remembering to set any adjustable headphone volume control to
MAXIMUM).
Lower the coil to the ground and sweep side to side slowly to
ensure that there are no metal targets in the place you are tuning
the detector. When you are satisfied, proceed as follows. Position
the coil about 3” (subject to coil size) above and parallel to the
ground surface. Raise the coil gently above the ground to 25 cm
(10", subject to coil size) and lower back to 3” (75 mm) above
ground several times. Note whether the threshold tone remains
the same or if it increases or decreases in intensity while raising
and lowering the coil. There should be no residual tone change
left after the GB is done.
* IF THE GROUND BALANCE IS INCORRECTLY SET THE RGB
METER WILL INDICATE STRONG FALSE SIGNALS FROM THE
GROUND MINERALS.
How to set the Ground Balance of MP V3.
At the start turn both GB controls to 0 (fully anti clockwise).
While moving the coil up and down as described above, begin
turning slowly the Coarse GB knob clockwise. Do so until the
detector produces very soft sound downwards. After this fine
adjustment the GB from the Fine GB control until there is no
residual ground signal left or very soft signal in both up and down
directions of coil movement.
8.