Minelab X-Terra 505 Manuel d'instructions télécharger pdf (Page 15)

target id

how deteCtors worK

The X-Terra has a number of dierent icons

that have been designed to best represent and

identify the metal objects in the ground.

Target ID

Buried metal objects are referred to as targets.

As the coil is passed over a target, it detects

its conductivity and displays this as a number.

Target Identication (ID) is used to distinguish

one type of metal target from another.

Target ID numbers range from –4 to 44 on

the X-Terra 305 and –9 to 48 on the X-Terra

505. Negative numbers represent ferrous

targets and positive numbers represent

nonferrous targets.

The last detected target ID stays on the

display until another target is detected. If the

detector passes over a target that it rejects, the

display will return to a blank detection screen

represented by 2 dashes.

Discrimination segment

Another identifier of metal objects, each segment

refers to a certain type of metal signal. Segments

can be turned off (to accept targets) or turned on

(to reject targets) which in turn accepts or rejects

signals from the corresponding metal objects.

(A grey icon on the diagrams in this manual

represents a flashing icon on the detector.)

Target ID

The numeric identifier of

a particular metal object

underneath the ground.

Depth indicator

A guide to how deep a

metal object is under the

ground. The more arrows

displayed, the deeper the

object is likely to be from

the coil.

Metal detectors work due to the fact that

metal is conductive. Metal detectors create

an electromagnetic eld, which penetrates

the ground.

When the coil senses a change in this eld

(caused by a metal object) it sends a signal

back to the control box which then alerts the

operator. Metal detectors react to the size,

shape and composition of objects.

Typically, the larger the object, the deeper it

can be detected.

The X-Terra uses a single frequency (7.5kHz)

as the standard operating frequency. This

frequency has the ability to penetrate deep

into the ground.

The frequency of a detector is the number

of times a signal is transmitted into the

ground and received back, per second

(measured in Hertz - Hz).

“BEEP!”

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 40 41

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Minelab X-Terra 505 Manuel d'instructions Page 15

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