White's MX Sport User Manual page 7

Features (Detailed)
Navigation
During normal searching there are two live controls that add
convenience for the two most common adjustments; Sensitivity
and Threshold.
SENSITIVITY: During searching (in all search modes) pressing
the + & - buttons adjusts the sensitivity, or responsiveness, of
the MX Sport. If the sensitivity is set too high, excessive noise will
make it difficult to locate targets due to the noise from either
the ground or external electric interference. Too-high sensitiv-
ity is noted by false signals. Lowering the sensitivity will improve
performance. Increase sensitivity for increased depth when the
ground and external conditions allow. Note: Few areas will allow
maximum sensitivity.
THRESHOLD: The MX Sport can be efficiently used with or
without a threshold hum. Threshold can be defined as a steady
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continuous background hum. In all search modes, the up & down
arrows control the Threshold. The lowest setting of 0 is Silent
Search. Use of a threshold provides more information regard-
ing what the metal detector sees. Rejected targets or ground
peculiarities often cause the threshold to fade to silent. Changing
the search orientation can correct this anomaly. Searching in
silence (no threshold) has the advantage of better focus on the
desired target responses. Unlike older metal detectors, there is
no difference in detection depth using either threshold or silent
search. However, those who search with a threshold tend to
find more artifacts as the threshold alerts the user to spots that
have something unusual about them—perhaps two targets near
each other—and thus more attention is paid checking for pos-
sible worthwhile targets.
Options- Pressing the Options button, the up and down arrows
are used to select the specific option to adjust. The + & - buttons
make adjustments to the selected option.
Summary:
Press Option button and use arrows to view all the options; press
+ & - to adjust a specific option. Go to the next option or exit to
search. Exit from Options is automatic after 10–15 seconds.
Simply press Option again if you desire further adjustment.
Detection (Search mode) will continue while in the Options mode.
Once options have been adjusted, pressing Option button again
will exit options.
Options will be slightly different depending on the search pro-
gram. For example All Metal, Prospecting, and Relic have the
features that are specific to All Metal-type programs. Features
such as Self-Adjusting Threshold (SAT) and Voltage Controlled
Oscillation (VCO) only appear when one of the All Metal modes
are in use. These features have no influence over the Discrimina-
tion programs and they will not appear as options.
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