White’s Electronics MXT Pro - Manual (Page 31)

1
Chapter MXT Pro Searching
Field Use & Tuning Tips-
1. MODE to Coin & Jewelry
2. Trigger (on handgrip) center “primary Searching” posi-
tion.
3. TRAC to Ground position.
4. GAIN to “Triangle” position.
5. Threshold, adjust for slight hum (edge of sound).
6. DUAL CONTROL to DISC “Triangle”.
7. Pump the search coil on the ground to be searched until
ground ceases to respond.
8. Move the coil just over the ground and listen for the dis-
tinct repeatable beep produced by a good metal target. It is
wise to plant metals just under the soil to practice on in order
to learn to recognize what it will sound like. Planting a metal
target disturbs the ground mineral, which usually reduces
the depth it would have been found in undisturbed ground. It
will take practice to determine the proper search speed and
technique. Do not go too fast, about 2 seconds from right-to-
left and two seconds returning from left-to-right. Overlap your
sweep path 50% so that you won’t miss the small and/or
deeper metal targets.
9. Once a solid repeatable beep is located: Consult the
display information. If the target indicates in the mid scale
aluminum Pull Tab range, squeeze and hold the Trigger on
the handgrip “+” the search coil over the area and check the
depth. If it is shallow (0 - 2 inches) depending on the hard-
ness of the ground, it is most likely a Pull Tab and should be
ignored. If it is deeper (beyond 2 inches) depending upon
the hardness of the ground, it is likely heavier gold jewelry
and should be dug.
10. Heavy Pull Tab. In areas littered with hundreds of
aluminum scraps or Pull Tabs it may be necessary to search
full time with the Discrimination control set high enough to
reject their audio response and save your time and efforts
Coin & Jewelry MODE
for digging coins and jewelry that indicate outside the pull
tab range. However, note; when aluminum is rejected the
probability of digging jewelry substantially diminishes. The
highest (furthest clockwise) discrimination setting than still
responds to the USA nickel, or a medium sized 14K gold
ring, is the highest trash rejection level that still responds to
most jewelry.
11. Ground Mineralization:
A. For Salt/Alkali environments proceed exactly as
above only with the TRAC toggle in the Salt position.
B. For areas with an abundance of decomposed man
made iron (which may make the MXT Pro appear un-
stable only during search coil sweeps), proceed exactly
as above only once you pump the loop over the ground,
then set the TRAC control to Lock.
The Coin & Jewelry MODE provides good general
purpose searching for a wide variety of targets and
environments. From residential yards, parks and school
grounds, farm fields, to beaches (for beaches use TRAC
Salt), the Coin & Jewelry MODE should be used if there
is any doubt at all regarding which of the three available
MODES is most practical for your current search.
As the name implies, Coins & Jewelry are the primary
goals of this mode, however, these settings and features
will also respond to any better alloy including common
relics and any other item made of a valued metal alloy.
The 1st option a user should consider is the selection 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 set-
ting. 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 while sweep-
ing the search coil), try the Lock setting. If the detector
smooths out and starts operating more predictably, you
made the correct choice. If there isn’t any change, you
may need to reduce the Gain control counterclockwise