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The X-Terra 70 has an All Metal Pattern,
three preset Discrimination Patterns and
Iron Mask.
The combinations of accepted and
rejected segments are referred to as
Discrimination Patterns. The X-Terra
70 has preset Discrimination Patterns
that have been customised to detect
general desired targets, such as coins
and jewellery.
Patterns 1, 2 and 3 can be edited
by you, to create your own custom
Discrimination Patterns. Edited patterns
are automatically saved, when switching
patterns and when the detector is
turned off.
(Editing Discrimination Patterns, pg. 25)
(Erasing Patterns, pg. 44)
(User Preferences, pg. 54)
Example targets only
PRESET DISCRIMINATION PATTERNS
All Metal Pattern
Accepts signals from all types of
metals, everything from jewellery
to rusty nails
(all target IDs)
. No target
signals are rejected.
Pattern 1
Accepts signals from non-ferrous
targets, e.g. gold jewellery and silver
coins
(target IDs: 2, 4, 6, 8, 10, 12, 14, 16, 18,
20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42,
44, 46).
Rejects ferrous objects and hot
rocks
(target IDs: -8, -6, -4, -2, 48).
Pattern 2
Accepts signals from most non-
ferrous targets
(target IDs 8, 10, 12, 28,
30, 32, 34, 36, 38, 40, 42, 44, 46)
. Rejects
those from ferrous objects, hot rocks
and some non-ferrous targets, e.g.
aluminium foil and pull tabs
(target IDs
-8, -6, -4, -2, 2, 4, 6, 14, 16, 18, 20, 22, 24, 26,
48)
.
Pattern 3
Accepts signals from some ferrous
(relics) and most non-ferrous targets
(target IDs -6, -4, 6, 8, 10, 12, 14, 16, 18,
20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42,
44, 46)
. Rejects those from ferrous
objects, hot rocks and some non-
ferrous targets, e.g. aluminium foil
(target IDs -8, -2, 2, 4, 48)
.
Iron Mask
Accepts or rejects signals from ferrous
and non-ferrous targets, e.g. gold
nuggets.
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In Prospecting Mode, the objective is
to find targets in mineralised ‘difficult’
ground, where target signals overlap
each other.
The Discrimination Scale becomes an
expanded Ferrous Discrimination Scale
(Iron Mask Discrimination Scale).
If the Iron Mask setting is adjusted
towards 0, most gold nuggets will be
accepted, but some ferrous junk may
also be accepted.
If the Iron Mask setting is adjusted
towards 20, more ferrous junk will be
rejected but some gold nuggets may
also be rejected.
The Iron Mask only uses 20 segments
of the Discrimination scale.
Ferrous
Gold
0
20
5
Iron Mask level = 5
Iron Mask Level =5
It is recommended that Iron Mask
levels be kept low to avoid missing
valuable targets.
Iron Mask Level = 20
Summary of Contents for Minelab X-Terra 70
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