User's Manual
29
The LORENZ DEEPMAX Z2 was developed to ignore
most electromagnetic interference EMI received
by the search coil. In some cases however there
are very strong interferences produced by power
lines, railroad tracks or transmitters which are very
dicult to suppress with electronic circuitry as they
are many times more intense than a signal recei-
ved from a metal object for example. Several lter
circuits have been added to the LORENZ DEEPMAX
Z2 to suppress most low frequency interference.
Especially in the near of power lines interference
can be noticed with false signals or rhythmic signals
which cause indications on the screen or an audio
response.
Near transmitters or when other metal detectors
are working close to the DEEPMAX Z2 interferences
could also be expected. In general interference will
increase with the size of the search coil. Interference
received with large coils is often accepted in re-
spect of the high sensitivity still oered with those
particular coils. In some cases interference can be
so intense that it is simply impossible to work with
the DEEPMAX Z2. Therefore it will be sometimes ne-
cessary to change the frequency FREQ to suppress
some interference. The FREQ Frequency function
can be turned to a lower or higher setting, until
the audio sound is clear and without any rhythmic
pulses. The sensitivity or the metal classication will
not be aected when doing this.
13. INTERFERENCE