4
TERMINOLOGY
The following terms are used throughout this manual and are standard
terminology among detectorists.
RELIC
A relic is an object of interest by reason of its age or its association with the past.
Many relics are made of iron, but can also be made of bronze or precious
metals.
IRON (Fe)
Iron is a common low-grade metal that is an
undesirable target in certain metal detecting applications.
Examples of undesirable iron objects include old cans,
pipes, bolts and nails. Sometimes, the desired target
is made of iron. Property markers for instance,
contain iron. Valuable relics can also be composed of
iron; cannon balls, old armaments and parts of old
structures and vehicles can also be composed of iron.
“Fe” is the symbol for the chemical element iron and is one of the
target identifications on the Mach1 display screen.
FERROUS
Metals which are made of, or contain, iron.
ELIMINATION
Reference to a metal being "eliminated" means that the detector will not emit a
tone, nor display a Target-ID icon when a metal object passes through the
searchcoil's detection field.
DISCRIMINATION
When the detector emits different tones for different
types of metals, and when the detector "eliminates"
certain metals, we refer to this as the detector
"discriminating" among different types of metals.
Discrimination is an important feature of professional
metal detectors. Discrimination allows the user to
ignore trash and otherwise undesirable objects.
PINPOINTING
Pinpointing is the process of finding the exact location of a buried object. Long-
buried metals can appear exactly like the surrounding soil, and can therefore be
very hard to isolate from the soil.
GROUND CANCELATION
Ground Cancelation is the ability of the detector to ignore, or "see through," the
earth's naturally occurring minerals, and only sound a tone when a metal object
is detected. This detector incorporates proprietary circuitry to eliminate false
signals from many mineralized soils.
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When pin point ing a tar get, try draw ing an imaginary “X”, as il lus trat ed,
over where the tone is induced.
Pinpointing
Accurate pinpointing takes practice and is best ac com plished by “X-ing” the
sus pect ed target area. A good way to practice this to lay a coin on the ground
(make sure there are no other metal targets nearby) and practice “X-ing” it
while listening to the audio. Note, the loudest signal response occurs when
the center of the searchcoil is directly over the coin.
1
.
Once a buried target is identified by a good tone re sponse, continue
sweep ing the searchcoil over the target in a narrowing side to side pattern.
2
.
Take visual note of the place on the ground where the “beep” occurs
as you move the searchcoil slowly from side to side.
3.
Stop the searchcoil directly over this spot on the ground.
4
.
Now move the searchcoil straight for ward and straight back towards
you in a similar fashion.
5
.
Again make visual note of the spot on the ground at which the “beep”
occurs.
6
.
This allows you to “zero in” on the exact spot on the ground at which
the “beep” occurs.
REMEMBER:
The detector will beep just as the searchcoil passes over the
buried object.
If you have difficulty pinpointing very strong sig nals, try lifting the searchcoil
higher off the ground until a weaker, but more concise, signal is heard. For
very weak signals, try moving the searchcoil in short quick sweeps, closer to
the ground.
