GLOSSARY OF COMMON TERMS
Control Box The control box encloses the electronic circuitry of the detector. The
control box originates the TX (transmit) signals sent by the coil and
interprets the RX (receive)
signals detected by the coil. All user
selectable functions (knobs & switches) are located on the
front and
rear panels of the control box.
Discrimination The ability of a metal detector to estimate if a located target is made
from ferrous metal (iron or steel) or non-ferrous metal (non-magnetic).
Double D Coils Double D coils are coils that have two windings of wire that overlap
in the shape of two D's (one reversed). The characteristics of a
Double D coil are stability, especially in heavily mineralised ground,
good depth and sensitivity and a very thorough search pattern.
Electromagnetic Field Commonly called the 'signal from the coil'. An electromagnetic field is
generated within the wire windings of the search coil and this field is
pulsed or sent into the ground. The presence of a metal target in the
ground will disturb the pattern of this field and this disturbance is
registered by the receive system of the detector and indicated to the
operator by an audible target signal "beep".
False Signal False signals are signals, which sound similar to target signals but are
caused by other factors. Common causes for false signals are incorrect
ground balance, hot rocks, signals caused by knocking the coil on
obstacles, etc. With experience, the operator will learn methods to
minimise false signals and to hear subtle differences between target
signals and false signals.
Ferrous Metals Metals composed of or containing iron. A ferrous item is one which is
attracted to a magnet and is predominantly or completely made of iron or
steel.
Ground Balance The ability of the metal detector to compensate for the effects of ground
mineralisation. The GP 3000 has "automatic ground balance". When it is
used in Tracking mode it continually compensates for changes in the
ground mineralization.
GLOSSARY OF COMMON TERMS
55
USER INFO
7
Содержание GP 3000
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