Ground Balance Value
Important Details Concerning Ground Balance
Ground balance value provides information about the ground you are searching on. 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
1) Upon start up, the ground balance value is set as 90. The device can perform ground balance
automatically within the range of 40-90 in all modes and 0-90 in the Beach mode.
2) If the ground mineralization is too low, automatic ground balance may fail to work in other
modes except for the Beach mode. Try manual ground balance in such a case.
3) You can test the accuracy of the ground balance with the pinpoint mode. After ground
balancing, if you receive no sound or a weak one when you move the search coil closer to the
ground in the pinpoint mode, then the ground balance is successful. If the sound gets louder
when you move the search coil closer to the ground, then the ground balance is not successful.
In this case, simply change your location. If ground balance is not possible despite these efforts,
you should continue your search without performing ground balance.
In order to search without ground balancing, restart the device . If you hear a sound when you
swing the search coil over the ground, switch the device to Three Tone or Two Tone mode (also
adjust the gain) or if you are on a beach, switch to Beach mode. Continue searching after
increasing the ID FILTER value as much as required to eliminate the sound. Since the ID FILTER is
not active in the All Metal mode, you cannot perform a search if you can’t reduce the sound.
4) Once the ground balance is set, it will remain satisfactory for a long time in most areas..
However, if you encounter an excavated, backfilled or geologically composite soil structure, a
ground balance should be performed again to adapt to the varying soil structure.
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Ground Balance
