4
SETTING THE MODE
The metal detector distinguishes between ferrous and non-ferrous
metals. Ferrous metals contain iron, while non-ferrous metals (such as
gold, silver, copper, platinum, aluminum, lead, and zinc) do not.
You can set the metal detector to discriminate between a variety of
precious and non-precious metals, then follow the instructions in “Out-
door Testing and Use” on Page 3 to use the metal detector.
To select the desired mode, press
ALL METAL
,
DISC
,
NOTCH
, or
AUTO
NOTCH
while the power is on.
Note: The metal detector is preset to begin in the
ALL METAL
mode.
Using the ALL METAL Mode
Set the metal detector to
ALL METAL
to detect all types of metal with-
out discrimination.
Note:
DISC/NOTCH
does not affect operation in this mode.
1. See “Adjusting GROUND BALANCE” on Page 5 to set
GROUND
BALANCE
properly, ensuring proper mineral elimination.
2. Push
GROUND TRAC
after adjusting
GROUND BALANCE
to lock in
the setting.
Each time you adjust
GROUND BALANCE
, press
GROUND TRAC
.
The metal detector sounds a medium tone for all targets.
Using the DISC Mode
Set the metal detector to
DISC
(motion discriminate) mode to detect
valuable metal objects while rejecting most junk targets.
1. Press
DISC
to select that mode.
2. Adjust
DISC/NOTCH
to differentiate between various types of met-
als. Rotate
DISC/NOTCH
:
• fully counterclockwise to detect all metals (including iron, nick-
els, and gold rings, along with pull-tabs and copper or silver
coins).
• slightly clockwise to eliminate small iron objects, then medium
iron objects.
• more clockwise to eliminate larger iron objects, followed by
items such as foil and aluminum, while still detecting silver and
copper (depending on how high
DISC/NOTCH
is set).
• fully clockwise to eliminate most gold and nickels.
Three distinct tones sound when the metal detector targets an item.
See “Understanding Three-Tone Audio Target Identification (ATI)”.
Using NOTCH Mode
Set the metal detector to
NOTCH
to create a variable rejection thresh-
old that detects nickels, gold rings, and silver or copper coins while
eliminating most iron targets, pull-tabs, and foil.
Note: Some pull-tabs or tab pieces have nearly the same detection
properties as nickels and some gold rings. These items cannot be sep-
arated.
1. Press
NOTCH
to select that mode.
2. Place the rejection target on the ground and pass the metal detec-
tor over it.
3. As you pass the metal detector over the rejection item, adjust
DISC/NOTCH
to the point at which the tab (or any other desired
object) is rejected so the metal detector does not sound a tone.
4. To test the
NOTCH
setting, set a nickel on the ground and pass the
metal detector over it to make sure it is still accepted.
Three distinct tones sound when the metal detector targets an item.
(See “Understanding Three-Tone Audio Target Identification (ATI)”.)
Using AUTO NOTCH Mode
Set the metal detector to
AUTO NOTCH
to have the metal detector au-
tomatically discriminate target items, rejecting most iron junk targets
while detecting nickels and small gold items. You can also adjust the
discrimination threshold to be wider (eliminating more junk targets),
but the starting position remains the same.
Note: You cannot detect some gold rings while in
AUTO NOTCH
mode.
You may also detect a small percentage of pull-tabs, especially those
that are broken in half.
1. Press
AUTO NOTCH
to select that mode.
2. Rotate
DISC/NOTCH
toward
HIGH
to increase the
NOTCH
width to
reject screw caps and zinc pennies, while still detecting nickels
and gold rings.
3. Adjust
DISC/NOTCH
to widen the discrimination window.
For example, you can eliminate zinc pennies and screw caps by
turning
DISC/NOTCH
clockwise.
Three distinct tones sound when the metal detector targets an item.
(See “Understanding Three-Tone Audio Target Identification (ATI)”.)
UNDERSTANDING THREE-TONE AUDIO
TARGET IDENTIFICATION (ATI)
When the metal detector is in
DISC
,
NOTCH
, or
AUTO-NOTCH
modes,
its Audio Target Identification (ATI) system automatically classifies
metal objects into three categories, to make it easier to identify the
type of target being detected. The detector sounds three distinct tones
to distinguish between categories of detected items.
Note: When operating in the
ALL METAL
mode, ATI shuts down, and
the metal detector emits only one constant tone (medium) when it de-
tects a target.
Target Object
Sounding Tone
Low
Medium
High
small gold and nickel items
X
larger gold* items (still reading in the GOLD
RANGE of the PROBABLE TARGET ID)
X
old/new pull-tabs
†
, some gold and zinc pennies
(dated after 1982), quarters and dimes
X
silver, brass, and copper — including pennies,
dated prior to 1982 — in any mode, except ALL
METAL
X
iron
‡
or steel — in DISC mode
X
