Analyzing A Pinpointer Scan - OKM ROVER C4 Manual

5.2.3 Analyzing a Pinpointer Scan

While scanning in Pinpointer mode you might see one or more different signatures, from which
you can recognize a specific characteristic of any target.
The typical signature of a ferromagnetic metal like iron 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 am-
plitude. 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 continu-
ously.
Take care to move the Super Sensor slowly and equal above the ground and above a detected
object to get a clear signature.
Ferromagnetic metals
Ferromagnetic targets have a
positive-negative-signature.
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In a signature of a non-ferrous target you can recognize that there is only a positive amplitude
(red). In addition to the main amplitude there is another small peak, which is typical for precious
metals. Also, here the order of amplitude and the small peak is not important and depends on
the scan direction.
The signature of all non-metallic targets and structures such as voids, tunnels or buried plastic
pipes or boxes are represented as negative amplitude (blue) only.
Non-ferromagnetic metals
Non-ferrous targets have a pure
positive signature.
Non-metallic targets
All non-metallic items have a pure
negative signature.