Search Modes
Discrimination Modes (DISC.1 and DISC.2)
Different than the All Metal mode, there is no threshold in these modes and the device emits a
warning tone only when a target is detected. If the sensitivity level is not set properly, you can
hear a crackling sound in these modes. Therefore, the sensitivity should be adjusted to a level
that the device is silent when there is no metal present.
Discrimination modes have some common features but they have slight behavioral differences.
ID Filter is a common feature, used frequently in these modes. ID Filter values are preset by the
factory for these modes. If you want, you can change these values based on field and ground
conditions.
DISC.1
It is the 2-tone discrimination mode designed for tough gold fields with high mineralization or
positive hot rocks. It offers slightly less depth but faster target detection and recovery speed in
highly mineralized soils compared to the other modes.
Although the settings for discrimination modes (Sensitivity, ID Filter and iMask) appear
underneath both modes, the changes made in one applies to that mode only and does not
affect the other discrimination mode.
DISC.2
It is the 2- tone discrimination mode designed for cleaner gold fields with milder mineralization.
It provides more depth compared to the DISC.1 mode.
In the DISC.1 and DISC.2 modes, the device will produce a low tone for iron and positive hot
rocks. For all other metals, it will produce a single tone just like in the All Metal Mode, which
increases in pitch as the coil approaches the target.
To get familiar with the warning audio tones, we recommend you to test the device with
different metals and hot rocks before you use it in the field.
When using the discrimination modes, if you record the IDs of the rocks in the field and then
filter them using the ID Filter feature, nugget detection will be more convenient. When filtering
IDs, you must use the ID value closest to the ID of the rocks. Otherwise, you may miss the
nuggets under the rocks. Consequently, you may need to change the default ID Filter value(10)
of these modes to another value based on the IDs of the rocks in the field. For more details on
eliminating hot rocks, please read the related sections (Target ID and ID Filtering, Rocks and
Searching in Rocky Terrains and Metals Under Rocks).
If you dig a target signal in a gold field and find rocks, be sure that there is no small gold nugget
underneath.
Settings for Discrimination Modes
Sensitivity
It is the depth setting of the All Metal mode. It is also used to eliminate the ambient
electromagnetic signals from the surrounding environment and noise signals transmitted from
ground.
NOTE:
In case of the coil overloading due to very high mineralization, decreasing the sensitivity
will overcome the situation.
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