"0" is placed in the desired operating level) and then performed the described above choice of
zone.
For soils containing large amounts of salts, in moist and wet soils, in clay soils, when searching
on the beach and searching in salt water, if the signal from the ground can not be ignored
entirely, look for the setting in which in the horizontal (left-right) movement of the search coil
of about 2-5 cm above the ground, have not drastic false signals, ie the metal detector does
not sound like from a detected metal object in the absence of a real one. In such situations, it
is usually necessary potentiometers THRESHOLD and GAIN to be set at lower levels, as instead
of drastically reducing of the GAIN potentiometer is recommended reduction of the
THRESHOLD potentiometer.
Described above, vertical movement of the search coil, to the choice of most appropriate auto
ground zone, should be carried at a place, with no metal objects near to the search coil, ie the piece
of land on which moves the search coil should not contain metal objects.
Otherwise, they would interfere the selection process of zone, therefore can not be selected
most appropriate auto ground zone. Whether the terrain is clean, is easily established, when
the search coil is moved horizontally above the terrain, ie without changing its distance
towards the ground. When there are no metal objects, the predefined from the THRESHOLD
potentiometer sound would not be changed.
After the choosing of auto ground zone has been finished, the GROUND MODE switch remains
in "AUTO" position (auto ground balance), while the DISCR LEVEL and THRESHOLD
potentiometers are turned to the desired from the user levels.
When changing the terrain with another, significantly different from the previous (changing the soil
characteristics), to the metal detector remain stable, necessary as described above, again to assess
which is most suitable in the case auto ground zone.
9.5. GROUND COARSE potentiometer
The GROUND COARSE potentiometer (old name: GROUND RUDELY) serves
as a coarse (base, fast) setting of the ground balance in a manual ground
balance working mode, ie for a base eliminate of the ground effect at work in a
manual ground balance working mode.
The GROUND COARSE potentiometer is used in combination with GROUND
FINELY potentiometer.
The recommended level for GROUND COARSE potentiometer is level "5" to
about level "8".
Most often works at level around "5".
For manual adjustment of the ground balance is needed:
- to be chosen the manual ground balance mode (GROUND MODE switch turned to MAN"
position);
- the DISCR LEVEL potentiometer to be set at a level "0";
- the THRESHOLD potentiometer to be turned at a level, just before the level where the metal
detector starts slightly zoom sound made (issued torn sound, buzzing, whiz) or one or two
levels before the level of zoom (recommended for beginners searchers);
- the GROUND FINELY potentiometer, to be set at a middle position, ie at a level "5".
Then is done vertical (up-down) movement of the search coil ranging from 2-3 cm to 20-25 cm
above the terrain, simultaneously with turning the GROUND COARSE potentiometer. At some
levels of the GROUND COARSE potentiometer, the sound is louder when the search coil is near
the ground, while at others the sound is louder when the search coil is high above the ground.
The balancing is actually finding the level (position) of the GROUND COARSE potentiometer, in
which in the described manner of movement of the search coil, the metal detector does not beeps or
issue possible weak sound, or at least the pre-set audio threshold level did not change significantly.
After the base balancing by GROUND COARSE potentiometer, if necessary, the metal detector can
be further fine balancing by GROUND FINELY potentiometer and described above vertically (up and
down) movement of the search coil.
BLISSTOOL LTC64X
- User Guide (version EN201405101504)
Page 20 of 42
