Garrett GTI 2500 User manual

SPECIAL NOTICE
The Garrett GTI™2500 metal detector
with TreasureVision® and Graphic Target
Analyzer™truly adds a new dimension to
treasure hunting. A precision electronic
instrument that utilizes the miracles of
high technology in its PowerMaster™DSP
circuitry to help locate coins, jewelry,
gold nuggets or any other kind of metallic
object, the GTI 2500 will accomplish more
than any other detector manufactured.
The patented Digital Signal Processing™
(DSP) technology provides extremely accu-
rate multiple channel filtering, continuous
adaptivity to hunting speeds and auto-
matic ground tracking to provide supe-
rior depth, discrimination and pinpointing
performance. Deepseeking sensitivity and
precise discrimination enable this marvel-
ous instrument to identify targets by size
as well as conductivity and to report depth
of targets of any size not just coins. In fact,
the detector's amazing TreasureVision on
the Display Screen will indicate both target
size and depth.
Graphic Target Imaging 2500 - 3

This exciting One-Touch™metal detector is
automatic and surprisingly easy to operate.
Yet those who have special demands will
find the GTI 2500 meticulously adaptable
to any personal style of treasure hunting.
Microprocessor-controlled circuitry truly
makes this the deepest-seeking detector
known to man.
Although the GTI 2500 is built to with-
stand rugged treatment outdoors while
giving years of trouble-free service, always
remember that this detector is a preci-
sion electronic instrument. Protect it from
extreme heat and cold as well as mist,
rain or blowing sand. Keep it as clean as
possible.
4 - Garrett Metal Detectors

CONTENTS
To The Owner ..............................7
Assembly .....................................9
Touchpads ......................................13
Display Screen ................................ 18
TreasureVision ................................20
Basic Hunting Instructions ................ 23
Discriminate Mode ...........................29
Setting Discrimination (Notches)....... 34
Operating Settings...........................39
Search Aids .................................... 45
Audio Choices ................................. 47
Battery Choices...............................48
All-Metal Mode ................................49
Other Special Features in
the All-Metal Mode ....................52
Treasure Imaging ........................... 57
Bench Testing .................................64
Field Operations .............................. 66
Headphone Jack ..............................75
Searchcoils .....................................76
Battery Information ......................... 77
Recommended Accessories ............... 81
Maintenance ...................................82
Specialized Hunting ......................... 83
Repair Service................................. 90
Recommended Reading....................... 93
Graphic Target Imaging 2500 - 5

Warning................................................. 95
RAM Book Order Form .................... 97
Specifications ................................ 99
Code of Ethics ............................... 101
Patents .......................................... 103
6 - Garrett Metal Detectors

TO THE OWNER
As the proud owner of a Garrett GTI 2500
with TreasureVision and Graphic Target
Analyzer, you join a worldwide fraternity
of treasure hunters who use Garrett detec-
tors to find coins, jewelry, relics and gold
nuggets worth millions of dollars.
This manual describes basic functions of
the GTI 2500 and explains how its target
identification and sizing, deepseeking and
discrimination capabilities can find trea-
sure. Your GTI 2500, whose microproces-
sor-controlled circuitry has been acclaimed
and proven through countless hours of
field use, is unparalleled in the simplicity
of its ability to locate coins, jewelry and
other metallic objects. You will be able to
identify the size and depth of any target
you locate.
The GTI 2500 offers dedicated metal
detector hobbyists added depth with a
true All-Metal (Deepseeking) mode and
the adjustment precision available only
with computerized controls. Just touch the
POWER touchpad and begin hunting imme-
Graphic Target Imaging 2500 - 7

diately without interference from ground
minerals. As the world's most intelligent
detector, the GTI 2500 is preset at the
factory to begin operations automatically
in a Coins detection mode. Of course, you
can easily adjust the instrument to oper-
ate in other Discriminate modes or in the
All-Metal mode.
When you find a target, Garrett's revolu-
tionary GTA display instantly directs you
to the range of targets on the Target ID
Guide. Press the TREASURE IMAGING pad
to discover its exact location, size, depth
and as well as clues to its identity. To pros-
pect for precious metals or hunt for deeply
buried caches switch to the All-Metal mode
and Fast Track™will ground balance the
circuitry of your detector precisely and
immediately.
Welcome again to the Garrett treasure
hunting fraternity. In becoming a part of
this great tradition, you follow the route of
multitudes of successful treasure hunting
hobbyists. Now, find your own treasures
with one of the world's most capable and
universal metal detectors, yet one that is
amazingly easy to operate!
8 - Garrett Metal Detectors

Graphic Target Imaging 2500 - 9
ASSEMBLY
Your GTI 2500 is shipped complete in one
carton:
A. Control Housing
B. Upper & Lower Stems
C. 9.5” PROformance Imaging Searchcoil
D. Parts Envelope
E. Owner’s Manual and DVD
F. Warranty Registration Card
Make certain all of these parts are included
and are undamaged. Report any short-
ages or damages to your dealer immedi-
ately. Follow these assembly instructions.
No tools are required. Hand pressure will
be satisfactory for all tightening. Inspect
contents of the clear plastic envelope.
A
B
C
DE
F

10 - Garrett Metal Detectors
A. One (1) nut
B. One (1) threaded bolt
C. Two (2) washers
1. Attach the lower stem to the 9.5” imag-
ing searchcoil. Make certain that the two
rubber washers are inserted onto the
lower stem (see below) before slipping the
searchcoil onto it.
AB
C