Nokta-detectors Fors Tech Manuel d'utilisateur télécharger pdf (Page 22)

GROUND BALANCE VALUE:

The ground balance value indicates the type of ground. Some typical ground types are as

follows:

0-25 Wet salt water or wet alkali soils

25-50 Wet salt water and wet alkali soils covered with dry layers

50-70 Regular, low-quality soils

70-90 Highly magnetic soils, magnetite or maghemite and similar highly mineralized

soils, black sand

IMPORTANT DETAILS ABOUT GROUND BALANCE:

When the device is turned on, the ground balance value is preset to 90. Automatic ground

balancing value ranges from 40-90 in all modes and from 0-90 in COG mode. If the ground

mineralization is too low, the automatic ground balance may not work except for the COG

mode.

You can test the accuracy of the ground balance setting in the pinpointing mode as well.

Once the ground balance is done, lower the search coil to the ground. If the device receives

no signal or a very weak one as the search coil approaches the ground, it means that the

ground balancing was successful. On the contrary, if the device receives noise as the search

coil approaches the ground, it means that the ground balance has failed. In this case,

change your location and try re-ground balancing. If you still cannot ground balance, you

need to continue searching without ground balance. Turn o and on the device again and

start searching without ground balancing. If you receive noise when you sweep the coil

over the ground, set the search mode to DI3 or DI2 (adjust sensitivity accordingly) or to

COG mode if you are on the beach and increase the ID Masking to a level where the noise

is eliminated. On the other hand, because the ID Masking is not active in the General

Search, if you cannot reduce the noise, you cannot continue searching either.

Once the ground balance is set, it will remain satisfactory for a long time in most areas.

However, in areas where the soil has been disturbed by digging or filling up, or in

geologically complex areas, you may have to ground balance frequently to accommodate

changing ground conditions.

FORS / Page 20www.noktadetectors.comNOKTA DETECTORS

GROUND BALANCE

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Nokta-detectors Fors Tech Manuel d'utilisateur Page 22