OKM Future Series - Analyzing a Pin Pointer Scan; Figure 7.6: Signature of a Ferromagnetic Metal Target; Figure 7.7: Signature of a Non-Ferromagnetic Metal Target; Figure 7.8: Signature of a Non-Metallic Target

Operating modes 49
7.2.3 Analyzing a Pin Pointer scan
While scanning in Pin Pointer mode you might see one or more different signatures, from which you can
recognize a specific characteristic of any target.
The figure 7.6 shows a typical signature of a ferromagnetic metal like e.g. iron. The signature includes a
positive (red) and a negative (blue) amplitude. When looking closely you can see even 2 ferromagnetic
signatures. The first signature starts with a positive amplitude and the second signature starts with a
negative amplitude. The order is not important, it depends on the direction of movement of the Super
Sensor. If you keep moving the probe from one side to another, these 2 signatures will change
continuously.
Take care to move the Super Sensor slowly and equal above the ground and above a detected object to
get a clear signature.
The figure 7.7 represents a signature of a non-ferrous target. You can recognize that there is only a
positive amplitude (red). Additionally to the main amplitude there is another small peak, which is
typically for precious metals. Also here the order of amplitude and the small peak is not important and
depends on the scan direction.
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www.okmmetaldetectors.com
Figure 7.6: Signature of a ferromagnetic metal target
Ferromagnetic metals
Ferromagnetic targets have a positive-
negative-signature.
Figure 7.7: Signature of a non-ferromagnetic metal target
Figure 7.8: Signature of a non-metallic target
Non-ferromagnetic metals
Non-ferrous targets have a pure positive
signature.
Non-metallic targets
All non-metallic items have a pure
negative signature.