White’s Electronics MXT Pro - Manual (Page 26)

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Chapter MXT Pro Controls
(Dual Control) in Coin & Jewelry or
Relic - While operating in the Coin & Jewelry or Relic
MODES the Dual control operates as a DISC (discrimina-
tion) control. DISC (Discrimination) is used to adjust the level
of audio rejection against trash metals.
The “Triangle” just below NICKEL is recommended for most
general purpose searching. In this position, the detector
will provide a reject response to most iron and light foil and
respond to most valuables including jewelry.
Positions lower than “triangle” (counterclockwise) will provide
less trash metal rejection, to the point of detecting virtually
all types of common metals.
Positions higher than the “triangle” (clockwise) will reject
more trash metals including aluminum pull-tabs. The display
will continue to indicate I.D. even though the audio discrimi-
nator will signal with a reject (suppressed or broken) sound.
Nickels and some jewelry will also be rejected with DISC
settings much greater than the “triangle”.
The “triangle” position is recommended for most MODES.
If when searching at the “triangle” position you feel you are
digging too much trash, adjust DISC slightly clockwise and
try again. Using the lowest (furthest counterclockwise) posi-
tion that is practical considering the common trash metals
in your area is important in order to find items of jewelry.
Settings that suppress the USA nickel, and/or a medium 14K
gold ring, will also suppress most other gold jewelry. For
jewelry, it is best to keep the Discrimination at or near the
“triangle” and rely on the display and depth indication to sort
out aluminum.
Dual Control in Prospecting -
When in the Prospecting MODE, the DUAL CONTROL is
used to adjust the level or speed of SAT (Self Adjusting
Threshold).
The Threshold or continuous faint hum heard during opera-
tion of the MXT Pro can increase or fade due to environmen-
DUAL CONTROL
DISC- DISCRIMINATION (outer ring)
When in COIN & JEWELRY and RELIC MODE
VARIABLE SELF ADJUSTING THRESHOLD SPEED (SAT)
When in Prospecting MODE