OKM Rover UC, Руководство пользователя

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5.4.2 Performing a Ground Balance
You may perform a Ground Balance if:
• you get any target indications right at the start even though you do not move the probe or
• your signal becomes unstable while scanning.
Press to perform a Ground Balance. Please note that the Pinpointer can also react on metallic
trash or contamination laying on the surface or near to the surface. Make sure the probe is not
above such an interference during ground balancing. Moreover, hold the probe vertically to the
ground and do not move it.
Once the detector has re-balanced, you can continue with your scan.
The Ground Balance can be performed as often as you like.
5.4.3 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.
Ferromagnetic metals
Ferromagnetic targets have a
positive-negative-signature.
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 ampli-
tude. The order is not important, it depends on the direction of movement of the probe. If you keep
moving the probe from one side to another, these 2 signatures will change continuously.
Move the probe slowly and at the same height above the ground to get clear signatures.
Non-ferromagnetic metals
Non-ferrous targets have a pure
positive signature.
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.
Non-metallic targets
All non-metallic items have a pure
negative signature.
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.
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