Garrett AT PRO INTERNATIONAL User guide

Owner´s Manual AT PRO International

AT PRO INTERNATIONAL Owner´s Manual

DTI Detector Trade International GmbH & Co. KG

AT Pro International™

THANK YOU FOR CHOOSING

GARRETT METAL DETECTORS!

Congratulations on the purchase of your new Garrett AT Pro™ metal detector. This enhanced metal detector has

been specifically designed for use in Europe's challenging environments. The AT Pro includes Garrett's exclusive Target ID technology and patented discrimination features. Two indicator scales allow you to see the detector’s discrimination setting (Lower Scale) as well as the analysis of each target (Upper Scale). In addition, a Digital Target ID scale provides a more specific target value. The AT Pro also features High Resolution Iron Discrimination (40 points) for separating desirable targets from iron junk in cluttered areas, several advanced audio features and a standard 28x22cm elliptical Double-D searchcoil engineered for optimum performance in Europe's more challenging mineralised soils. In addition, the AT Pro can be operated in a very user-friendly Standard (STD) Mode or in a more advanced PRO Mode for experienced hunters. Backed by more than 45 years of extensive research and development, your Garrett AT Pro metal detector is the most advanced of its kind in the industry. Whether you are experienced or a beginner, this machine is well suited for a wide variety of detecting environments. The AT Pro's advanced features are designed for the expert treasure hunter but its Standard Mode can be easily operated by the beginner. In order to take full advantage of the special features and functions of the AT Pro, you are urged to carefully read this instruction manual in its entirety.

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TABLE OF CONTENTS

AT PRO CONTROL PANEL ................................................................... 4

QUICK START GUIDE ........................................................................... 5

AT PRO COMPONENTS ....................................................................... 6

LIST OF PARTS .................................................................................... 7

ASSEMBLY .......................................................................................... 8

POWERING ON .................................................................................. 11

SEARCH MODES ............................................................................... 12

Overview of STD Mode vs PRO Mode ........................................ 12

Standard (STD) Detection Modes ..............................................13

PRO Detection Modes ................................................................ 15

Proportional Audio (PRO Mode) ................................................. 15

Tone Roll Audio (PRO Mode) ...................................................... 18

TARGET ID INFORMATION ................................................................19

DIGITAL TARGET ID ........................................................................... 20

TONE ID ............................................................................................. 21

DISCRIMINATION ..............................................................................22

Notch Discrimination..................................................................22

Iron Discrimination ..................................................................... 24

IRON AUDIO ...................................................................................... 27

SENSITIVITY ...................................................................................... 30

GROUND BALANCE ........................................................................... 31

Automatic Ground Balance ........................................................ 31

Manual Ground Balance ............................................................ 32

FREQUENCY ADJUSTMENT ..............................................................33

PINPOINTING .................................................................................... 34

Narrowing the Detection Area ...................................................36

Coin Depth Indicator ..................................................................36

Alternative Pinpointing Methods ............................................... 37

HUNTING TIPS .................................................................................. 39

BENCH TESTS ................................................................................... 44

UNDERWATER OPERATION .............................................................. 47

CARE AND MAINTENANCE ............................................................... 48

Battery Replacement .................................................................48

TROUBLESHOOTING GUIDE ............................................................. 50

METAL DETECTING CODE OF ETHICS ............................................. 51

CAUTIONS .........................................................................................52

WARRANTY / SERVICE ..................................................................... 53

ACCESSORIES ................................................................................... 54

SUGGESTED READING ..................................................................... 56

AT Pro International™

High Resolution

Iron Discrimination

indicates level of iron

discrimination selected.

Mode

Indicator

Sensitivity Setting

AT Pro CONTROL PANEL

Target ID Legend

indicates metal types.

Digital Target ID

(also shows ground balance settings while in GND-BAL mode.)

Target ID Cursor

indicates probable target identity.

Lower Scale

indicates notch discrimination pattern.

Coin Depth

Indicator

indicates depth of coin-sized target.

Iron Disc Pushbutton

Use (+) or (-) to change iron discrimination level.

ON / OFF Power:

to turn power on/off.

MODE:

push quickly to toggle

between detection modes.

RESET:

hold 5 seconds to restore

factory settings.

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Iron Audio

Use to hear discriminated iron.

hold 1 second

PINPOINT / Frequency Adjust Pushbutton

Press and hold to pinpoint or use with SENSITIVITY (+) or (-) to change frequency.

SENSITIVITY

Pushbutton

increases or decreases sensitivity.

Battery Level

Indicator

GROUND BALANCE Pushbutton

Press and hold for fast auto ground balance or use with NOTCH DISC (+) or (-) for manual ground balance.

ELIM and NOTCH DISC

Pushbuttons

Use NOTCH DISC (+) or (-) to select a cursor. Then use ELIM button to set its discrimination on or off.

QUICK START GUIDE

1. Install batteries.

The AT Pro operates with four (4) AA batteries which are already installed by Garrett.

2. Power ON.

Press and release the ON / OFF Power button. The AT Pro powers on in the last mode used and is ready to search. (Factory default mode is Coins.)

3. Select Mode.

Use the Mode Pushbutton to select a different detection mode, when desired.

4. Adjust settings.

Adjust Sensitivity or Discrimination settings, if desired.

5. Begin scanning.

Lower the searchcoil to 2 to 3 cm above the ground and scan the coil left and right at approximately 1m/second.

AT Pro International™

AT Pro COMPONENTS

coil

Lower

Stem

Spring

Clip

S-shaped

Stem

Handle

Grip

Upper

Stem

Detector

Stand

Control

Housing

LCD

Screen

Pushbutton

Controls

Arm strap

Padded

Arm Cuff

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LIST OF PARTS

No tools are required to assemble the AT Pro. Four (4) AA batteries are included with the detector. The box for your detector contains the following parts:

 One (1) control housing with S-shaped stem  One (1) upper stem and one (1) lower stem connected  One (1) wing nut, two (2) mounting washers and one (1) threaded bolt

If any part is missing, please contact your local dealer.

 One (1) 28x22 cm DD searchcoil

 Owner's manual  Warranty Card  Headphones













AT Pro International™



ASSEMBLY

1. Align the holes in the mounting washers with the small posts on the lower stem and press firmly into place.

1. 2.

2. Slide the searchcoil onto the stem.

3. Insert the threaded bolt through the holes of the lower stem and searchcoil. Hand-tighten the searchcoil assembly with the wing nut.

3. 4.

4. Depress the spring clip in the S-stem and insert the control housing into the upper stem.

Garrett Metal Detectors

5. Depress the spring clip in the lower stem and adjust to the most comfortable operating length.

6. Wrap the cable snugly about the stem with the first turn of the cable over the stem.

7. Insert the coil connector into the 4-pin connector of the control housing and hand-tighten.

8. If needed, adjust the arm cuff by removing the screw on the bottom and moving it to the other hole.

AT Pro International™

9. If desired, attach headphones to the 2-pin connector of the Control Housing.

Note: Headphones are not required but are desired by many hunters to hear faint targets. Connecting the headphones will silence the detector's speaker.

Note: The provided headphones are for dry use only; see page 54 for optional waterproof headphones.

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POWERING ON

ON/OFF Power

and MODE

Pushbutton

Switch the detector on with the power button.

Press and release to switch the unit ON and resume hunting with the same settings used prior to switching the unit OFF.

To turn off the detector, press and hold this pushbutton for one (1) second (until the detector produces a second beep).

To restore the factory settings, press and hold the power button for 5 to 10 seconds (until the detector produces a fast double beep).

AT Pro International™

SEARCH MODES

The AT Pro includes six detection modes: three Standard (STD) Modes and three Professional (PRO) Modes. It is recommended to begin searching with one of the Standard Modes to become familiar with the AT Pro before switching to the more advanced audio features provided by the Pro Modes. Tap the Mode button to scroll through the six modes: the modes are Custom, Coins or Zero in the STD Mode and Custom, Coins or Zero in the PRO Mode.

•OverviewofSTDModevsPROMode

In its Standard (STD) Mode, the AT Pro provides a full- strength audio response regardless of a target’s amplitude. Many detectorists prefer this consistent, unambiguous, binary (either on or off) target response. The AT Pro's Standard Mode operates in this clean, binary response format in which the target's dominant conductivity is reported by a single tone. This mode offers "quieter" or more stable operation and is preferred by many beginners. For those who want to hear more target information, Garrett offers a Pro Mode. The benefits of operating in Pro Mode include the ability to hear a target's size and depth via the Proportional Audio and conductivity changes via Tone Roll Audio. Pro Mode also offers faster recovery speed for separating adjacent targets. The advanced audio features of Pro Mode are intended for more skilled users who wish to hear the true signature of targets versus the simpler target response provided in STD Mode.

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STANDARD (STD) DETECTION MODES

In the STD modes, the AT Pro produces a full-strength binary audio beep to indicate a detected target. Standard detection mode operation is ideal for learning the AT Pro because of its consistent audio signals. Detected targets are heard at the same full-strength beep regardless of their size or depth. Three discrimination patterns are available in the Standard Mode: Zero, Coins or Custom. Note: These three discrimination patterns are the same in either Standard or Pro modes.

• ZERO Mode

Designed to detect every type of metal; use ZERO mode to find all metal items or when the material of the desired object is unknown. All 12 discrimination pixels are switched on and High-Res Iron Discrimination is set to 0 (zero)—indicating that no metal targets have been eliminated. Switch to the ZERO Mode to aid in locating a target when its signal is inconsistent. Such signals could mean the target is made of iron or a trash target is close to a good target.

AT Pro International™

•COINS Mode

Designed to find most types of coins, jewelry, etc., while eliminating trash items such as iron and foil. High-Res Iron Discrimination level has been preset to 35 to exclude most iron targets. In addition, one pixel of foil has been excluded. Be aware that most pulltabs and pieces of tabs have not be eliminated from detection as these trash items have conductivities similar to small coins and jewelry.

•CUSTOMMode

This mode can be customized by the operator and the AT Pro will retain the changes when the detector is switched off. The factory preset for the CUSTOM Mode is the same as the ZERO Mode (see previous page). Begin with this discrimination pattern and then use IRON DISC and NOTCH DISC pushbuttons to customize the discrimination settings.

Note: Changes made to the ZERO or COINS modes will not be retained after the detector is switched off. (For information on the use of IRON DISC and NOTCH

DISC, see pages 22–26.)

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PRO DETECTION MODES

Zero, Coins or Custom have the same discrimination patterns as in STD Mode. In PRO Mode, however, the AT Pro utilizes its Pro Audio functions—including Proportional Audio and Tone Roll Audio—to offer more target information. The Pro Mode audio provides more target information and faster recovery speed for separating adjacent targets. This is especially important in areas where good targets may be scattered amongst iron trash. Pro Mode audio by its nature creates more audible chatter than Standard Mode. This is normal because of the additional sensitivity of Pro Mode. The audio depth can exceed Target ID depth in Pro Mode so it is possible to hear deep targets that do not register a Target ID.

Proportional Audio (Pro Mode)

Proportional audio response means that the loudness of the target's response is proportional to a target's signal strength. This allows the user to hear subtle changes in a target’s response. Proportional audio response also allows the user to better judge a target’s size, shape and depth and has the additional benefit of faster recovery time for separating adjacent targets.

AT Pro International™

Audio Target Response Comparison: Standard vs Pro Mode

Shallow coin

Deep coin

Notice the differences in Standard binary audio versus PRO audio in the two target scenarios above. The binary audio gives a solid, consistent beep for both the shallow and the deep coin. In contrast, PRO Mode's proportional audio provides a stronger signal for the shallow coin and a softer signal for the deeper coin. The actual profile, or signature, of the target’s response is heard, thereby providing more information.

Garrett Metal Detectors

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