User's Manual

30
For further reduction of any pulsed interferences
put FILTER to a higher setting but this will also
result in a slower response speed which makes only
sense with frame coils but not with smaller coils.
If it is not possible to reduce interference by chan-
ging the frequency and lter of the LORENZ DEEP-
MAX Z2 it is either possible to put the AUDIO or
SENS Sensitivity to a lower setting until the noise
disappears. When setting the AUDIO setting to -
the sensitivity of the LORENZ DEEPMAX Z2 will be
slightly reduced, but the amount of false signals will
also be reduced. When connecting a smaller search
coil the amount of interference can also be reduced.
The compensated 1m x 2m frame mounted search
coil the 1m x 1m double frame coil or other dieren-
tial coil designs do not suer from interferences and
therefore should be in use when strong Electroma-
gnetic interferences EMI are expected.
This will always guarantee a very stable operation
of the LORENZ DEEPMAX Z2. For the detection of
smaller objects the available 1m x 1m double frame
coil should be rather used than the compensated
2m x 1m (eight 8 shaped) coil. This specially desig-
ned frame coil is capable to eliminate interference
while oering detection depths similar to a single
loop 1m x 1m frame coil. Especially when working
in the GND mode this coil is the best choice, as the
electronics need a signal free of interference to be
able to cancel out the ground and to distinguish
between dierent metals.
Note: Low interference with clear audio response
and correctly tuned (zeroed) electronics is absolute-
ly necessary to make exact metal classications and
ground excluding functions possible. When interfe-
rences are expected the LORENZ DEEPMAX Z2 has to
be tuned with FREQUENCY, FILTER rst.
The electronics unit of the LORENZ DEEPMAX Z2
does not suer from any drift in general. That me-
ans only in case of extreme temperature changes
the electronics have to be retuned with the
ZERO
button shortly. The same should be done after the
very rst ve minutes of operation since many com-
ponents inside the LORENZ DEEPMAX Z2 control
box need to warm up to their working temperature.
When working with small search coils the AUTO
function can also be used to make the detector
work more stable.