Minelab 4901 - 0059 quick start Preset Discrimination Patterns, All Metal Pattern, Iron Mask

22PRESET DISCRIMINATION PATTERNS

23

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)

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.

It is recommended that Iron Mask levels be kept low to avoid missing valuable targets.

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.

			Example targets only
Iron Mask level = 5	Iron Mask Level = 20	Iron Mask Level =5
	Ferrous		Gold
	0	5	20

The Iron Mask only uses 20 segments of the Discrimination scale.