Garrett Infinium LS User manual

Owner’s
Manual
Owner’s
Manual
INFINIUM™
Land & Sea

2
TO THE OWNER
Congratulations on your selection of the Garrett
Infinium LS (land & sea) metal detector. This detector
has been specially designed for optimum performance
in any environment. You can be confident that your new
detector will provide years of treasure hunting pleasure.
We encourage you to read this Owner's Manual
carefully. The more metal detecting knowledge and
experience you gain, the more successful you will be
in finding treasure. This manual has been designed for
you to keep in your pocket while hunting. It describes
basic functions of the Infinium LS and explains how its
Advanced Pulse Induction (API) technology will assist
you in a variety of treasure-hunting applications.
Since 1964, Garrett Metal Detectors has been
the leader in metal detecting technology. Our highly
trained and knowledgeable service representatives
are available to assist you in any way with your
treasure hunting needs. Please feel free to contact us
directly or call your authorized Garrett dealer with any of
your concerns. We also invite you to visit our website at
www.garrett.com.
On behalf of the entire team at Garrett Metal
Detectors, we wish you the best of luck in your treasure
hunting experiences.

3
TABLE OF CONTENTS
ToTheOwner.........................................2
Assembly ............................................6
Searchcoils..........................................12
Control Functions.....................................13
Power On/Automatic Ground Track ..................13
(slow, lock or fast)
Audio Threshold Adjustment.........................13
Discrimination Adjustment...........................14
Basic Operating Instructions ............................14
Turn On/Battery Test ...............................14
Selecting Automatic Ground Track Setting .............14
Setting Threshold..................................16
Setting Discrimination ..............................16
Bench Testing and Understanding Audio Signals ........17
Searchcoil Scanning Technique ......................18
Reverse Discrimination Technique ....................19
Pinpointing Tips ...................................20
Adjusting Frequency ...............................21
Hunting Applications...................................22
Search and Recovery Tips .............................23
Underwater Searches ..............................24
Searching Shoreline and Shallow Surf.................25
Land Searches....................................26
Prospecting ......................................26
Detector Maintenance .................................28
Battery Replacement ..................................29
Recommended Accessories ............................30
Specifications........................................31
Repair Service .......................................32
Warning.............................................33
Detecting Code of Ethics...............................34

4

5

Remove all pieces from the Infinium LS box. All
assembly hardware is located in a clear plastic bag
inside the bag containing the control housing pouch.
1. The cuff on the end of the s-handle has been
factory installed. Test its placement by grasping the
black-rubbered s-handle (Figure 1). If the cuff does
not fit comfortably under your forearm, loosen the
nut, remove the nut, bolt and washers, and reposition
the cuff. Reinsert the bolt and washers, and tighten
the nut.
2. Remove the black stem piece that has been tele-
scoped into the silver stem (Figure 2). Insert the end
of the silver stem piece, with the hole 2" from the top,
over the bottom of the black stem at the end of the
s-handle. Significant pressure needs to be applied to
the silver stem in order to insert the bolt (Figure 3).
6
ASSEMBLY
Figure 1 Figure 2

Tighten with bolt, washers
and nut.
3. Insert spring clip into
the black stem piece
(Figure 4). Insert black
stem piece into bottom
of silver stem. (You may
need to adjust the length
of the stem after the
searchcoil is attached to
suit individual needs.)
4. Insert black rubber
washers into the recessed
grooves on the bottom
of the black stem (Figure
5). Insert bottom of black
stem between raised
mounting holes on top of
the Power DD searchcoil.
7
Figure 3
Figure 4
Figure 5

5. Insert black plastic bolt through the mounting holes
of the searchcoil and the stem (Figure 6). Attach black
cap to the threaded end of the screw and tighten
(Figure 7). DO NOT use tools.
6. Wrap cable around
the stem and secure it
according to your operat-
ing configuration. For hip-
mount or under the cuff
configurations, use the
adjustable velcro strap to
secure the cable to the upper stem (Figure 8).
7. Choose desired control housing configuration
(Figure 9). For ease of use, under the cuff or belt
mount configurations are recommended.
Under the cuff, above or under the stem (mounting
brackets located in clear plastic bag):
A. Holding the control housing with "instructions" side
8
Figure 6 Figure 7
Figure 8

9
Figure 9
Figure 10 Figure 11
Under Cuff Under Stem
Above Stem Belt Mount
facing you (instructions should be upside down, bat-
tery compartment side up, control buttons down), slip
the left bracket lip under the slot on the left hand side
of the control housing (Figure 10). Do the same with
the right bracket on the right side of the control hous-
ing (Figure 11).
B. Hold the brackets firmly in place and slide them
over the stem, lining up the holes in the stem. Insert
the remaining bolts, washers and nuts through the

left bracket, stem and
right bracket (Figure
12). Tighten both nuts.
NOTE: keep pouch and
belt in a safe place in
case you decide to use
the pouch configuration
at a later date.
Belt Mount:
A. Unfasten velcro strap on pouch. Slide
control housing, control buttons up, into the pouch.
Refasten velcro strip.
B. Unwind belt strap and adjust to fit around your
waist. Slip one side of the strap through the loop
in the back of the pouch (Figure 13) and snap belt
together around your waist (Figure 14). NOTE: keep
control housing brackets and extra hardware in a safe
place in case you decide to use a mounted configura-
tion at a later date.
8. Ensure the searchcoil connector at the rear of the
control housing is clean and the o-ring at the end of
the cable is well lubricated; add a little silicon grease
or petroleum jelly if necessary. DO NOT coat connec-
tor pins with lubricant. Insert searchcoil cable connec-
tor and gently tighten by hand; DO NOT over tighten.
10
Figure 12

9. Repeat Step 8 when
inserting the head-
phone connector at
the front of the control
housing.
10. Perform a battery
test by switching the
detector on. Note the
number of beeps that
occur. Four beeps
indicate the batteries
are full. One beep
indicates they need to
be replaced/recharged.
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Figure 13
Figure 14

12
SEARCHCOILS
The Infinium LS comes standard with a 10" x
14" Power DD searchcoil. The DD coil configuration
couples with the API technology of the Infinium LS
make it the most powerful detector in mineralized soil.
In areas where the ground is low in mineraliza-
tion, the optional 10" x 14" mono searchcoil is recom-
mended. In these ground conditions, the mono coil
will outperform the Power DD.
For smaller targets in low mineralized soil,
choose the optional 8" mono searchcoil. It provides
easier maneuverability than the 10" x 14" mono.
For underwater hunting, choose your searchcoil
using the same criteria as land hunting. Consider the
level or mineralization of the water and/or the soil
at the bottom of the body of water. For example, in
saltwater, the Power DD is the best choice. In fresh-
water, however, the mono searchcoils will perform
better. Another criteria would be the size of the target.
Generally speaking, the smaller the target, the smaller
the searchcoil should be.

13
Figure 15
CONTROL FUNCTIONS
Power
Used to turn on the detector and to choose slow,
lock or fast Automatic Ground Track. A battery check
occurs automatically each time the power is switched
on. (Figure 15.)
Audio Threshold Adjustment
Used to set the base audio level according to an
individual's hearing requirements. The Threshold
Adjustment may also be used to help mask outside
noise. Typically, the sound is set no louder than
necessary; just above silent is recommended. (Figure
15.)

14
BASIC OPERATING INSTRUCTIONS
Discrimination Adjustment
Used to set the desired level of discrimination.
(Figure 15.)
The following procedure shows how easy it is to
operate the Infinium LS.
1. Turn On/Battery Test:
Turn the detector on and note the results of the
battery test represented by a range of one to four
beeps. Four beeps indicate the batteries are full. One
beep indicates they need to be replaced within one to
two hours. However, because of internal voltage regu-
lation circuitry, the detector will maintain total operat-
ing power and performance until the batteries are fully
depleted.
Scan a metal object to confirm detection. If the
detector fails to operate, verify that the battery pack
and batteries are aligned properly.
2. Selecting Automatic Ground Track Setting:
Knowing the conditions of your search area will
help you choose the Automatic Ground Track setting
that will best suit your needs.
Initially select the Lock position using the rotary
power switch. Operating in the Lock position is

15
recommended for maximum detection depth unless:
A. The detector is not properly ground balanced, or
B. You are hunting in changing ground mineralization
conditions that require continuous ground tracking.
Improper ground balance or changing ground
mineralization are identified by erratic audio signals
caused by the ground. If you experience these sig-
nals, you will need to switch the rotary dial to fast or
slow. It is recommended that you ground balance the
machine before continuing.
To ground balance the detector, turn the Automatic
Ground Track switch to either fast or slow, and bob
the coil up and down approximately one to six inches
above the ground. When the detector's audio signal
smooths out, move the Automatic Ground Track rotary
switch to lock and the unit will lock the ground track
setting at that value.
If erratic audio signals continue, you may need to
turn the Automatic Ground Track to slow or fast and
hunt in one of those modes.
Use Slow when:
A. Operating over slowly changing ground
mineralization, or
B. When small ground balancing adjustments are
needed.

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Use Fast when:
A. Hunting over extreme or quickly changing ground
mineralization, or
B. When large ground balancing adjustments are
needed.
Improper ground balance will degrade detection
depth and audio stability. It should not be necessary
to reground-balance every time you turn the machine
on. It will continue to operate with the same ground-
balance level before the machine was turned off.
In the rare event that extreme ground conditions
continue to produce audio signals, increase discrimi-
nation in small increments until the detector becomes
stable. To ensure maximum possible detection depth,
only increase discrimination enough to achieve detec-
tor stability (this should never exceed the 3 setting on
the dial).
3. Setting Threshold:
Set the base audio level according to your individ-
ual hearing requirements. The Threshold Adjustment
may also be used to help mask outside noise.
Typically, the sound is set no louder than necessary;
just above silent is recommended.
4. Setting Discrimination:
Set the Discrimination control to zero or a low
level until you are familiar with the conditions of

17
your search area and determine the kinds of metal
items you want eliminated from detection. With zero
discrimination, you will achieve maximum detection
depth and will detect all metals including foil and pull-
tabs, but you won't miss any desirable targets. Once
you are familiar with the hunting area, then re-adjust
the discrimination setting to a level that will eliminate
unwanted items.
Be aware that high concentrations of saltwater may
require increasing the Discrimination up to a value of
three or less (see tips on Searching Shorelines and
Shallow Surf on page 25).
5. Bench Testing and Understanding
Audio Signals:
Bench testing is recommended to familiarize your-
self with the detection capabilities and audio respons-
es of the detector. This will help you determine if
a target is treasure or trash. Since Pulse Induction
machines only give audible clues to the identity of
detected targets, it's important to learn these different
signals.
Tests should be performed (Figure 16) with the
searchcoil perpendicular to a bench, floor or other
non-metallic surface and several feet away from any
large metallic object. Pass various metallic targets
from side-to-side across the bottom of the searchcoil
at a distance of about three inches. Listen carefully

to the audio tones,
noting which targets
produce high and low
tones and how the tar-
get response changes
with discrimination.
As a general rule,
poor conductors
(small nuggets, most
rings, pull-tabs, nick-
els, etc.) should pro-
duce a high tone followed by a low-tone echo. Good
conductors such as large nuggets, pennies, dimes,
quarters, etc. should produce a low tone followed by
a high-tone echo. In addition, most iron will produce a
low tone followed by a high-tone echo, since to a PI
machine, iron behaves like a good conductor.
6. Searchcoil Scanning Technique:
Methodically sweep the searchcoil from side to side
keeping it at a constant height of one to two inches
above the ground. Restrict your sweeping speed
to about 1/2 to two feet per second. Overlap each
sweep by about 1/4 the diameter of the searchcoil.
Try to scan in a straight line (not a wide arc); it helps
keep the searchcoil level, reduces the likelihood of
lifting the searchcoil at the end of each sweep and
ensures the overlap sweeps remain uniform.
18
Figure 16

19
7. Reverse Discrimination Technique:
When a target has been discovered while operating
at minimum discrimination, you may use the reverse
discrimination technique to help determine possible
target identification.
A. Once a target is found, increase discrimination to
maximum level (Iron Check).
B. If the target still produces a substantial signal
there is a good chance it is iron. If the target has
disappeared or produces only a faint signal then it's
probably a desirable target and not iron. Be aware,
however, that some small iron may behave like a
desirable target, and some desirable targets such as
large nuggets and coins may behave like iron.
C.As with all PI detectors, eliminating the detection of
iron is difficult if not impossible; however, the reverse
discrimination technique is effective at identifying
most iron. In addition, attaching a magnet to the
inside of your digging tool can help separate bits of
iron and other debris from your treasure finds.
D.Finally, it is important to remember that any detec-
tion signal, no matter how loud or faint,
represents the sound of metal and its source should
always be determined.

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8. Pinpointing Tips
Whenever your detector locates a target, locating
it precisely will enable you to recover it by digging
the smallest hole possible. This is accomplished by
pinpointing. Note that pinpointing with a DD searchcoil
is somewhat different than pinpointing with a mono
searchcoil. The instructions for each are below.
Pinpointing with Power DD Searchcoil
The Power DD coil has a narrow detection field
pattern that runs front-to-back underneath the center
section of the coil, so always detect by sweeping the
coil in a side-to-side motion.
First, slowly scan the searchcoil from side-to-side
over the target area, noting the location where the
loudest signal occurs. Once the area with the loudest
signal has been identified, position yourself 90° from
the target area and again scan side-to-side to pinpoint
the target's exact location.
For targets on or close to the surface, start behind
the target's suspected location and scan the area
using short side-to-side sweeps while moving forward
until the target is exactly pinpointed underneath the
tip of the coil.