User's Manual

17
The LORENZ DEEPMAX Z2 should now be almost
silent even if the coil is raised in the air or lowered
to the ground again. If still indications occur it may
be possible that the Detector has been tuned to
a piece of metal in the ground. In this case simply
repeat the same procedure at a metal free place. In
some cases it might be necessary to keep a small
distance between the coil and the ground when
pressing
ZERO for the second time in the automatic
two step ground balancing procedure.
In selected GND 3 or GND 5 modes the Detector
will distinguish automatically between the two
signals and will select the stronger signal of two
GND modes. In most cases however the GND 2 or 4
function will be sucient. It is only necessary to run
through the whole tuning process when changing
the coil or turning o and on again the Z2. When
Double D coils are in use, the GND 6 function will
be also selectable but works dierently compared
to the previous explained. The detection depth to
many non- ferrous metal objects will increase when
GND 6 is in use with that coil. In some cases howe-
ver higher iron oxide contents of the ground makes
the Z2 unstable in GND 6 position and therefore
should not be used.
In the case that very high mineralization is expected
GND 1 will be a good choice with some expense of
sensitivity to small metal objects.
With turned on GND function the LORENZ DEEP-
MAX Z2 works with either reduced or higher
sensitivity compared to DEL Delay modes. Some
iron objects and very few non-ferrous metals with
a similar signal response as iron will be indicated
less sensitive. It is even possible to eliminate large
or small iron objects when selecting a special GND
setting. Signals will still occur when the distance
between the coil and the metal is too small because
of signal overload. However most metal objects will
be detected with almost the same or even higher
sensitivity as without ground balancing modes.
An increase in interferences with turned on GND
function due to power lines and radio transmitters
will be realized. The amount of interference could
only be reduced by the way of changing to smaller
or dierential coils, setting the FREQ Frequency
control to a dierent position, reducing the AUDIO
threshold to -1, -2… or adding a higher FILTER set-
ting with some expense of response speed.
When a GND function is active, it is possible to alter
the GND settings manually by pressing the
MENU/
GADJ = GROUND ADJUST push button for a longer
duration. As long as G1 and G2 icons are active in
the display simply alter the settings with the upper
or lower push button in single or tenner steps while
pressing the same buttons for a longer duration
(
ZERO and OFF). Please note that only GND 1,2,4
and 6 can be altered! To leave the same function
simply press the same
MENU/ GADJ button shortly.