Whites DXF Manuel d'utilisateur télécharger pdf (Page 57)

Glossary

All-Metal:

Any mode or control setting allowing total acceptance of all metal types, iron, aluminum, tin,

nickel, gold, brass, lead, copper, silver etc.

Audio ID:

Circuitry which produces different audio tones (pitch) for different target's conductivity.

Black Sand:

One of the most extreme components of non-conductive, negative ground minerals. Mag-

netic. Also called Magnetite (Fe304) or magnetic iron oxide.

Cache:

Any intentionally buried or secreted hoard of valuables.

Conductive Salts:

One of the major mineral types which make up the positive ground minerals. Wet

ocean salt/sand will produce a positive response due to its similar conductivity to metal.

Conductivity:

The measure of a metal target's ability to allow eddy currents on its surface.

Depth:

The greatest measure of a metal detectors ability to transmit an electromagnetic ﬁ eld into the

ground.

De-tuning:

Method of manually or automatically desensitizing a metal detector so that it may locate the

center of a target.

Discrimination:

Circuitry which ignores or otherwise indicates, a speciﬁ c target based on its conductiv-

ity/phase.

Drift:

A loss or increase in threshold caused by temperature, time, or battery condition.

Eddy Currents:

Small circulating currents of electricity.

Ferrous:

Descriptive of any iron or iron bearing material.

Frequency:

The number of complete alternating current cycles produced by the transmit oscillator per

second.

Ground Balance:

A state of operation in which specialized circuitry can ignore the masking effect ground

minerals have over metal targets.

Hot Rock:

A rock which contains a higher concentration of mineralization than the surrounding ground.

Matrix:

Refers to the total volume (average) of ground penetrated by a metal detector.

Menu:

Series of listings and prompts on a visual display designed to aid the operator in feature selection.

Metal:

Metallic substances: iron, foil nickel, aluminum, gold, brass, copper, silver, etc.

Microprocessor:

An electronic component that can be programed to perform certain electronic functions.

Mineralized Ground:

Any soil containing conductive or magnetic components.

Mode:

A condition of operation selected by the operator for speciﬁ c functions.

Motion Mode:

Any mode that requires loop movement to respond to metals.

Non-ferrous:

Not of iron, any metal that is not iron.

Non-Motion Mode:

Any mode of operation that doesn't require movement of the loop to respond to metal

targets.

Phase:

The length of time between eddy current generation sustained on a metals surface and the resulting

secondary electromagnetic ﬁ eld effect on the loops receive winding.

Pinpointing:

Finding the exact center of a metal target.

Reject:

An indication of a target non-acceptance by silence or a broken sound.

Sensitivity:

The measure or capacity of a metal detector to perceive changes in conductivity within the

loops detection pattern.

Signal:

An audio or display response alerting the operator that a target has been detected.

Stability:

The ability of a metal detector to maintain smooth predictable performance.

Target:

Refers to any object that causes an audio or display indication.

Glossary

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Whites DXF Manuel d'utilisateur Page 57

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