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Summary of Contents for Garrett AT Pro
- Page 1 The powerful, all-terrain solution for locating deeply buried relics, coins and jewelry! 1881 W. State Street Garland, Texas 75042 Tel: 1.972.494.6151 Email: sales@garrett.com Fax: 1.972.494.1881 Owner’s Manual © 2012 Garrett Electronics, Inc. PN 1533200.C.0212...
- Page 2 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. AT Pro™...
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Page 3: Table Of Contents
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 .......... -
Page 4: At Pro Control Panel
Indicator indicates level of iron GND-BAL mode.) Press and release the ON / OFF Power button. The AT Pro indicates depth of discrimination selected. coin-sized target. powers on in the last mode used and is ready to search. -
Page 5: At Pro Components
AT Pro COMPONENTS LIST OF PARTS No tools are required to assemble the AT Pro. Four (4) AA Search batteries are included with the detector. The box for your coil detector contains the following parts: Lower Control One (1) control housing with ... -
Page 6: Assembly
O-ring is felt to be fully inserted. Note: If the O-ring is properly seated, the connector's collar can be easily tightened; if the collar is difficult to turn, the O-ring may not be seated properly. Garrett Metal Detectors AT Pro™... -
Page 7: Powering On
(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). 10 Garrett Metal Detectors AT Pro™... -
Page 8: Search Modes
Standard or Pro modes. • ZERO 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. -
Page 9: Pro Detection Modes
• COINS Mode 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. - Page 10 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. 16 Garrett Metal Detectors AT Pro™...
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Page 11: Tone Roll Audio (Pro Mode)
As shown, the bottle cap will The discrimination pattern can be adjusted (as described produce a distinctive response of Low-High-Low as compared to the coin’s response of only High tone. in the "Discrimination" section). 18 Garrett Metal Detectors AT Pro™... -
Page 12: Digital Target Id
Digital Cursor Target The AT Pro’s Digital Target ID system provides a specific Note: Target values can vary based on the orientation of the target in the ground, amount of ground mineralization, etc. It is important to practice in target value to help identify targets more precisely. Targets the field to learn how these factors can affect Target ID. -
Page 13: Discrimination
For example, if an earring has been pushbuttons (seen above) to manually modify the Lower lost, scan the matching earring with the AT Pro while in the Scale's Notch Discrimination pattern. ZERO mode. Note where the Target ID cursor appears when Use the (+) or (-) NOTCH DISC pushbuttons to move the the earring is scanned. -
Page 14: Iron Discrimination
The examples shown below illustrate how an iron object on either side. The AT Pro is now programmed to find the can often "mask" out the signal of an adjacent good missing earring based on the conductivity of its matching target when too much iron discrimination has been applied. -
Page 15: Iron Audio
IRON AUDIO Iron Audio In the illustration above, the AT Pro is operating with an IRON DISC setting of 20. The nail seen in Illustration 1 (on page 25) registers from 10 to 25 on the Digital Target ID scale. To eliminate the nail from detection, increase the iron discrimination level to 25 using the IRON DISC (+) pushbutton. - Page 16 IRON AUDIO OFF: Normal division of low, mid and high tones. the Iron Audio feature, conduct the following experiment. Start with the AT Pro in Standard (STD) Zero Mode and pass the searchcoil over a bottle cap which is lying flat on the ground.
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Page 17: Sensitivity
Indicator NOTCH DISC GND BAL Pushbutton The AT Pro has eight (8) settings for sensitivity. Use the (+) Pushbutton (use with GND BAL) or (-) SENSITIVITy buttons to step through the eight levels, which are continuously shown on the LCD. -
Page 18: Frequency Adjustment
(+) or (-) SENSITIVITy pushbuttons to adjust frequency. Manual Ground Balance mode. The Ground Balance setting The AT Pro is capable of operating at four slightly different will be retained when the detector is switched OFF. frequencies in order to minimize the interference caused by electrical sources (e.g. -
Page 19: Pinpointing
Note: For best pinpointing results, maintain a constant height 8.5" x 11" your reference point searchcoil. above the ground (e.g. 1 inch) and ensure that the detector is for pinpointing. properly ground balanced. 34 Garrett Metal Detectors AT Pro™... - Page 20 (see Image B). Deep targets will be under or just inside your searchcoil's tip. This is because the conical shape of the searchcoil's detection field begins bending in slightly as the depth increases. 36 Garrett Metal Detectors AT Pro™...
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Page 21: Hunting Tips
Tip: Practice any or all of these various pinpointing options in your test plot. Choose the technique that works best for you. CORRECT As you improve your pinpointing accuracy, you will dig smaller SWING holes and increase your productive hunting time. INCORRECT SWING 38 Garrett Metal Detectors AT Pro™... - Page 22 Continous Wave (VLF) metal detector. Saltwater is conductive and produces signals similar to foil. Although the AT Pro is not specifically designed for saltwater use, it can be used in this environment. Proper ground balance is the most important step for stable saltwater operation.
- Page 23 In order to detect a good produce abrupt changes in ground response that can reduce target, first ground balance the AT Pro to the terra cotta or hot the detector's performance. rocks that are present. Be aware, however, that the combined Target ID might be very low (e.g.
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Page 24: Bench Tests
The proportional audio characteristics of the PRO Mode with the AT Pro’s operation in both Standard and PRO modes. can be easily understood using such bench testing. Pass In addition, the use of the Iron Audio feature should be tested the coins across the searchcoil at distances that vary from 2 in both Standard and PRO modes. -
Page 25: Underwater Operation
Digital Target ID reading in the 75–85 range and produces the high tone of a "good" target. The AT Pro can be immersed in water to a 10-foot depth Next, switch to PRO Mode and pass the bottle cap across (maximum) to search in and along shorelines, rivers, piers, the coil again and notice the different audio. -
Page 26: Care And Maintenance
Pull and remove the cap to slide battery holder out. Remove batteries when the AT Pro will be stored for longer than 30 days. The AT Pro is a rugged machine, designed for outdoor Battery Level use in all environments. -
Page 27: Troubleshooting Guide
Target ID Cursor movement. Use Iron Audio feature to help identify iron targets. add to the stature and public image of all people engaged in the field of metal detection. 50 Garrett Metal Detectors AT Pro™... -
Page 28: Cautions
Use of the AT Pro at submerged depths exceeding 10 feet will void • Never trespass or hunt on private property without this warranty. -
Page 29: Accessories
5" x 8" DD Coil Cover Part No. 1607400 Part No. 2222600 6.5" x 9" Coil Cover Part No. 1605700 Smaller and lighter than the AT Pro's 9" x 12" Coil Cover Part No. 1612600 standard DD coil, this waterproof searchcoil offers excellent depth in 4.5"... -
Page 30: Suggested Reading
Keep the facts handy: pocket size Please note that RAM Books, the publishing divi- treasure-hunting field guides written by sion of Garrett Metal Detectors, continues to release Charles Garrett. Collect them all! new titles each year related to treasure hunting, gold prospecting, coin hunting and relic recovery. - Page 31 1881 W. State Street Garland, Texas 75042 Toll Free: 800.527.4011 Tel: 972.494.6151 Fax: 972.494.1881 Email: sales@garrett.com © 2012 Garrett Electronics, Inc. PN 1533200.C.0112 58 Garrett Metal Detectors...
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