Nokta detectors Fors Tech - Manual (Page 17)

GENERAL SEARCH MODE (GEN):
Sometimes referred to as the ''All Metal'' mode, this is the deepest mode of the device.
Different than the other modes, this mode has a constant threshold sound in the
background that enables the user to use his/her own judgment.
In the General Search mode, the device will detect all targets (metal, high mineralized
rocks etc.) without discrimination. The ID of the detected target will be displayed on the
screen (except for negative rocks) and the device will emit the same tone for all targets. The
audio warning tone will increase in pitch as the coil approaches the target.
In this mode, the sensitivity and threshold settings are preset by the factory for best
performance on most soil types. If you want, you can change these settings based on
ground conditions in your search field.
ID Masking is not available in this mode so it is disabled in the menu.
We recommend using the General Search mode when discrimination is not necessary and
not using it in heavy trash areas or areas containing many hot rocks.
DISCRIMINATION MODES (DI2, DI3 and COG):
Different than the General Search 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 Masking is a common feature, used frequently in these modes. ID Masking
values are preset by the factory for these 3 modes. If you want, you can change these
values based on field and ground conditions.
DISCRIMINATION 2 (DI2):
It is the 2-tone and the deepest one among discrimination modes. It provides good
results especially in clean fields without much trash metals. In rocky or trashy fields,
however, you can perform deeper searches by using the ID masking feature and
sweeping the search coil more slowly (about one full right & left pass in 1 second). ID
Masking factory setting is 10. You can change this value according to the ID of the
target.
In the DI2 mode, the device will produce a low tone for iron and for all other metals,
it will produce a single tone just like in the General Search 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 rocks before you use it in the field.
DISCRIMINATION 3 (DI3):
This is the 3-tone discrimination mode. The device will emit a low grunt tone for iron,
a low tone for gold and foil, and a high tone for non-ferrous metals such as silver,
brass and copper. This mode is ideal to use in fields with different types of metals
enabling you to search faster with audio discrimination. Provides good results in
trashy fields.
FORS / Page 15
www.noktadetectors.com
NOKTA DETECTORS
SEARCH MODES