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is identified the RT threshold tone is replaced by the ST tone of an appropriate frequency. The
duration of the tone can be changed using the Duration ST.
RTL-ST [Real time before the threshold - Short tone]. Along with RT-ST this is the other main type of
sound indication. Different from the RT-ST this setting is characterized by the fact that when the ST
tone is generated the RT tone drops out. This setting will help with audio overload to the user when
detecting in trash or in areas with many targets.
ST-P {Short Tone Polyphonic} Ability to give both a low tone and high tones at the same time. For
example, when giving a signal from the small flat iron targets (beer bottle caps, small pieces of sheet
metal, etc.).
Num. of tones [2, 3, 4, 5]. Sets the number of tones for audio identification.
LT Boundary (The boundary for the low tone (iron)) This option allows the user to set the boundary
for the low tone. In areas of mineralized soil as well as areas with small iron nails, targets such as
small shallow gold and other low VDI targets will indicate a negative VDI. Usually these give a signal
between the medium-large iron VDI range and foil VDI range. These will not fall completely within
the range of iron but also not quite at the range of foil. For example medium wrought iron targets
such as wrought iron nails will have a VDI vector of -45 to -40. Foil will have a VDI vector of 0 or close
to this. Therefore those targets with a VDI from 0 to -35 are considered “suspicious” and subject to
research when looking for small gold jewelry, small medieval daggers or coins within debris. When
setting the boundary of the LT remember these facts in order to not miss valuable targets when
searching under these conditions. So, if we receive a good tone, even if the hodograph indicates a
loop, with 95% confidence we can say that this is possibly a good non ferrous target. Together with
the separation rate of the MM search mode this setting will increase your chances of not missing a
non ferrous target mixed in the iron. Try to set the border for these lower tones appropriately. If you
perform a search in places where the medium/large iron can be interesting (Arrowheads, knives,
medieval items etc.) you can move the non-ferrous tone to the sector border where the majority of
large iron indicates at -45 (-50 possible maximum).
Volume WS [Volume of weak signals 1-9] Adjusting this parameter allows you to change the volume
of the ST from weak signals from small or deep targets. Smaller values of this parameter can control
the level of the volume signal for a wider range of target depths. However, at very low settings
signals from small or extremely deep objects can be too quiet. Very high settings will reduce the
differential volume level between deep and shallow targets. Therefore, the value of this parameter is
selected experimentally, to individual user preferences.
Volume LT [1..9]. Parameter adjusts the volume of targets within the setting of the LT border (iron).
Sometimes it is useful to reduce the volume or even mute the sound from iron in order to make the
search more comfortable. This parameter value is selected based on the personal preference of the
user. The value of Fe-9 Volume adjusts the volume levels of iron and non-ferrous objects.
In the case of overloading the electronic circuit due to large or shallow targets under the coil the
device will issue an audible and visual alarm overload.
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