White’s Electronics MXT Pro - Manual (Page 35)

adjustments. If you are unsure if a response is a
real target, and/or wish to sweep over any target
repeatedly, if is best to do so either holding in the
Trigger on the handgrip, or holding the GROUND
GRAB button. Squeezing and holding the trigger
on the grip or squeezing and holding the GROUND
GRAB button, temporarily disables tracking.
The 1st option a user should consider is the selec-
tion of an appropriate TRAC toggle setting for the
area. The Ground setting and Salt settings should
be almost self-explanatory. If you are searching in
typical ground, use the TRAC Ground setting.
If you are in a salt water or desert alkali ground
condition, use the TRAC Salt setting. When to use
the Lock setting can be less obvious. If it seems
like something is wrong with the detector, wildly
fluctuating Threshold hum (only during search coil
passes), try the Lock setting. Before switching to
the Lock setting, be sure to pump the search coil up
and down over the ground a few times in the TRAC
Ground or Salt setting to insure that you have
achieved proper ground balance for that area. If
the detector smooths out and starts operating more
predictably in Lock, you made the correct choice.
If there isn’t any change, you may need to return
to the Ground or Salt setting and either reduce the
Gain control counterclockwise and/or increase the
Dual control (SAT) clockwise and try again. An
area littered with man-made iron would dictate the
Lock setting. On the other hand an area with very
inconsistent ground would not, such an area would
dictate Reduced Gain and/or higher SAT settings.
The 2nd option is Gain. Some areas require, and
some operators just prefer, the more predictable
operation normal “P” or reduced Gain settings
provide. Others prefer to push Gain to the limits of
their patience to find the deepest targets. There is a
point of diminishing returns either indicated by the
OVERLOAD display telling you to lift the loop due
to a Gain setting to high for the ground, or a user
missing targets because they can not sort them
from sporadic noise experienced at high Gain.
The 3rd option goes hand in hand with the Gain
setting and the SAT speed or level controlled by
the DUAL CONTROL. Higher (faster) SAT speeds
are more user friendly, however, may compromise
some sensitivity particularly to small nuggets
as well as adding additional search coil sweep
requirements. On the other hand faster SAT will
allow for higher Gain settings and more incon-
sistent ground conditions. A balancing act must
be achieved between the Gain control and SAT
speed that provides both good performance and
enough stability to recognize nuggets from ground
or external noise. A new SAT feature “Hyper SAT”,
provides for the most extreme conditions with very
unique characteristics.
The 4th option is Threshold level. It is best to
search with a continuous hum or threshold (edge
of sound). You can hear smaller and/or deeper
nuggets and be made aware when the SAT speed
is doing its job maintaining the Threshold hum. It,
however, also requires more patience and con-
centration. Finding the Threshold, and then setting
the Threshold just counterclockwise of it, provides
good performance for those who cannot tolerate
the continuous Threshold hum.
The 5th option is if you prefer the distinctive grunt
on iron, or the same VCO audio tone for all targets.
Pressing “Music Notes” Tone ID, the Iron Grunt
feature can be turned on/off. When on, targets
certain to be iron will produce a unique grunt audio.
When off, all targets sound with the standard VCO
audio.
Chapter MXT Pro Searching