Instruction manual
19
The theory behind manually ground balancing your detector is the
same, regardless of model. Your objective is to “tune the ground phase”
of your detector to a setting that compensates for the mineralization at
a particular site. In other words, you are trying to neutralize the eects of
mineralization. This is accomplished by pressing the Ground Balance pad
and “bobbing” the coil a few inches o the ground.
I like to set my Ground Balance with my X-TERRA in All Metal so I know
that I am not setting the GB over anything metal. You can set up in a
Discrimination Pattern. But if you happen to have the coil over a target
that is set to reject, you’ll get an incorrect GB setting. Regardless, make
sure you don’t actually touch the ground on the down stroke. As the
coil is lowered to the ground you will hear a change of tone. If that tone
has a low pitch, the current GB setting is numerically lower than the site
requires.
Another way of looking at it is that you are setting the ground phase too
low, over-compensating for that particular site’s “mineralization”. When
this happens, increase the ground phase setting by pressing the + pad. If,
on the other hand, the tone is high, the ground is more mineralized than
your detector is currently set for. Thus, you’ll need to decrease the ground
phase setting by pressing the - pad. Continue bobbing the coil and make
the appropriate adjustments.
Your objective is to nd a setting that allows for the least pitch variation
when lowering the coil. Once you have a proper setting, press the
Pinpoint/Detect pad (or press the GB pad again) and you’re ready to hunt.
4” (10 cm)
Understanding your X-TERRA - Ground Balance