34
12. Coarse G.E.B.
(Manual Ground Balance) Allows viewing the
current automatic Ground Balance setting (Air/
Ground Balance) and/or manual overriding of the
automatic Ground Balance.
COARSE & FINE G.E.B. (Ground Exclusion
Balance, or ground rejection) allows manual
override of the automatic balancing features to
select a specific Ground Balance setting.
COARSE allows major adjustments. FINE allows
minor adjustments near the COARSE setting.
Before attempting manual Ground Balance adjust-
ments, turn off AUTO TRAC™ since it will alter any
manual changes you make. Manual Ground Balance
will begin at the setting selected by the automatic
(Air/Ground Balance) sequence. An Automatic Air/
Ground Balance performed after manual adjustment
will cancel the manual setting. To maintain a manual
setting, the Automatic Air/ Ground sequence must be
avoided by squeezing and releasing the TRIGGER
when, and if, the Air Balance instruction appears. Air
Balance instructions may appear during Basic Adjust-
ment or Pro Options selections following the manual
adjustment.
When manually adjusting the Ground Balance, it is
necessary to make an adjustment in COARSE and/
or FINE, then squeeze and release the TRIGGER.
The TRIGGER can be held in, and the loop low-
ered and lifted over the ground to check for a
change in sound which would indicate imperfect
Ground Balance. To return to the Ground Balance
display for further adjustment, press either of the
ARROW controls. When perfectly Ground Bal-
anced in a search mode, the TRIGGER can be
squeezed and held, and the loop lowered and lifted
with very little change in the threshold hum.
50
COARSE G.E.B.
MIN MAX
Tips - Use for controlled
reactions to specific
minerals or hot rocks.
(G.E.B./Trac section)
Chapter 5 XLT
®
Pro Options
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