Table of Contents
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Summary of Contents for Garrett AT Gold
- Page 1 Deep-seeking True All Metal Mode Performance for All Terrain Prospecting! 1881 W. State Street Garland, Texas 75042 Tel: 1.972.494.6151 Email: sales@garrett.com Fax: 1.972.494.1881 Owner’s Manual © 2011 Garrett Electronics, Inc. PN 1533500.A.0811...
- Page 2 10 feet (3 meters) for searching in freshwater lakes and streams. In addition to its True All Metal Mode, the AT Gold includes two Discrimination Modes, making it a versatile coin and relic hunting machine. When selecting either the DISC 1 or DISC...
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Page 3: Table Of Contents
In order to take full advantage of the special features and DISC 1 Mode (Zero Discrimination Pattern) ...........27 DISC 2 Mode (U.S. Coins Discrimination Pattern) ......... 28 functions of the AT Gold, you are urged to carefully read this IRON DISCRIMINATION................... 29 instruction manual in its entirety. -
Page 4: At Gold Control Panel
2. Power ON. discrimination selected. Depth Indicator GND-BAL mode.) indicates depth of a Press and release the ON / OFF Power button. The AT Gold coin-sized target Mode powers on in the last mode used and is ready to search. Indicator (Factory default mode is ALL METAL.) -
Page 5: At Gold Components
AT GOLD COMPONENTS LIST OF PARTS No tools are required to assemble the AT Gold. Four (4) AA Search batteries are included with the detector. The box for your coil Lower detector contains the following parts: Control Middle Stem Housing... -
Page 6: Assembly
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. 8 Garrett Metal Detectors AT Gold ™... -
Page 7: Powering On
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 seconds (until the detector produces a fast double beep). 10 Garrett Metal Detectors AT Gold ™... -
Page 8: Target Information
Scale, continually indicates the discrimination pattern. The without providing any Target ID). AT Gold will produce an audible target response for the pixels that are switched on, and no audible response for those that have been switched off. The Target ID Cursor will always indicate all targets. -
Page 9: Sensitivity
Therefore, small, thin gold—for example—will register lower on the Target ID scale than would The AT Gold has eight (8) settings for sensitivity. Use the a larger, thicker piece of gold, even if the two pieces have (+) or (-) SENSITIVITY buttons to step through the eight levels, identical purity. -
Page 10: Ground Balance
Balance mode) LCD. Low ground balance values indicate conductive soil; high ground balance values indicate ferrous soil. Note: If the AT Gold's Ground Balance setting does not change during the auto ground balancing process, the THRESHOLD GND BAL... -
Page 11: Manual Ground Balance
This is not a result of limited ground balance resolution; rather, Ground Balance this is due to localized variations in the ground minerals. Window For conventional detectors operating in All Metal Mode, Pushbutton these ground variations can produce subtle audio responses 18 Garrett Metal Detectors AT Gold ™... -
Page 12: Frequency Adjustment
This feature can even be used to reduce the response to some hot rocks and terra cotta. FREQ With the GB Window set to zero (0), the AT Gold will operate Adjust Pushbutton like a conventional All Metal detector. -
Page 13: Threshold Adjustment
THRESHOLD ADJUSTMENT SEARCH MODES OVERVIEW The AT Gold includes three detection modes: a true All Metal Mode and two Discrimination Modes. THRESHOLD Press the Mode button to scroll through the three modes: Setting ALL METAL, DISC 1 and DISC 2. -
Page 14: All Metal Mode
Target responses will normally be heard as a proportional Medium Tone. However, the AT Gold is a Designed to detect all types of metal. All 12 discrimination... -
Page 15: Discrimination Modes
DISCRIMINATION MODES The AT Gold provides more audio target information when it is operated in one of its Discrimination Modes, as compared to the ALL METAL Mode. The AT Gold includes two Discrimination Modes: DISC The additional audio features offered in either the DISC 1 or 1 and DISC 2. -
Page 16: Iron Discrimination
IRON DISCRIMINATION detection. Note: This notch discrimination pattern is preset; no other Iron Discrimination—The AT Gold features a high-resolution notches can be accepted or rejected, but Iron Discrimination iron discrimination adjustment. This additional resolution can be adjusted and will be retained in memory. - Page 17 In the illustration above, the AT Gold is operating in the DISC 1 Mode with "masking" problem. an IRON DISC setting of 20. The nail seen in Illustration 1 (on page 28) registers from 18 to 24 on the Digital Target ID scale.
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Page 18: Iron Audio
"IRON AUDIO" appear on the LCD (as shown in the illustration above). The Iron Audio feature can be used in any of the AT Gold's three modes. Its functionality in either of the two Discrimination Modes or while in the All Metal Mode will be discussed separately. -
Page 19: Tip For Using Iron Audio
Iron Audio feature, conduct the following experiment All Metal Mode metal detector is a using a bottle cap and a coin. Start with the AT Gold in DISC The Iron Audio feature should be used in the All Metal 1 Mode, with Iron Disc set to 35 and Iron Audio off. -
Page 20: Audio Characteristics
Example A: Adjacent targets can often produce a single strong signal with many metal detectors. The fast recovery of the AT Gold, however, will provide two peaks of audio response to these adjacent nuggets. These multiple audio responses provide the experienced user with more target information. -
Page 21: Bench Tests
You should conduct bench tests to become more familiar and Tone ID responses sound similar in either the ALL METAL with the AT Gold’s operation in both ALL METAL and or Discrimination Modes. Use both large and small test pieces Discrimination Modes. -
Page 22: Sweeping The Searchcoil
Knowledge of the audio 3ft (1m) characteristics and the Iron Audio feature of the AT Gold can reduce the amount of trash targets that are dug. In order to fully search an area, overlap the swings of your searchcoil by half the length of the coil (about 4 inches). -
Page 23: Pinpointing
Indicates mount. The opening to side pinpointing just ahead of the stem approx. center of the 3 ft. (1m) mount can serve as 5"x8" DD per second. your reference point searchcoil. for pinpointing. 42 Garrett Metal Detectors AT Gold ™... -
Page 24: Tip For Narrowing The Detection Area
(Press and hold to pinpoint) Traditional pinpointing technique using Pinpoint pushbutton. Note: For best pinpointing results, maintain a constant height above the ground (e.g. 1" or 2cm) and ensure that the detector is properly ground balanced. 44 Garrett Metal Detectors AT Gold ™... - Page 25 (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. 46 Garrett Metal Detectors AT Gold ™...
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Page 26: Advanced Tips And Techniques
In lightly mineralized ground, it is possible to ground understand the soil conditions of your hunting environment. balance the AT Gold to the hot rocks or terra cotta since To determine how mineralized the soil is, begin by ground ground balance is less critical in areas of light mineralization. - Page 27 Isolating adjacent targets. The narrow detection field of the AT Gold's DD searchcoil allows better separation of adjacent targets versus a similar size concentric searchcoil. Use narrow swings of the searchcoil in trashy areas to isolate good targets amongst the trash.
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Page 28: Prospecting Tips
Gold and other precious metals can be found in various tiny pieces of gold can sometimes read like iron in highly forms with an AT Gold. You will most likely be searching for mineralized ground. The AT Gold's Iron Audio feature can nuggets, but gold can also be found as lode or hard rock help to distinguish true iron targets in many cases. -
Page 29: Underwater Operation
The AT The AT Gold can be immersed in water to a maximum Gold will, however, perform well for hunting coins and jewelry on depth of 10 feet (3 meters) to search in and along freshwater dry sand beach areas. -
Page 30: Care And Maintenance
Access and replace the batteries by rotating the battery cover housing one-quarter turn counterclockwise. Pull and remove the cap to slide the battery holder out. Remove batteries when the AT Gold will be stored for longer than 30 days. Battery Level... -
Page 31: Troubleshooting Guide
58 Garrett Metal Detectors AT Gold ™... -
Page 32: Cautions
Use of the AT Gold at submerged depths exceeding 10 feet (3 Never trespass or hunt on private property without meters) will void this warranty. -
Page 33: Accessories
DD Searchcoil—Part No. 2222700 Allows use of standard headphones with a 1/4" male phone plug with This larger size DD searchcoil is the Garrett AT Gold. (Not intended waterproof, offers maximum depth for submerged use.) for larger targets in more mineralized soils, and offers excellent separation for adjacent targets. -
Page 34: Suggested Reading
SUGGESTED READING RAM Books, a division of Garrett Metal Detectors, publishes new titles each year related to treasure hunting, gold pros- pecting, coin hunting and relic recovery. TO VIEW OTHER RAM BOOKS: Go to www.garrett.com and visit the Hobby Division. An order form is available on our site which can be printed and mailed with your requested titles and payment.
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