Garrett Metal Detector GTI 1500 Owner's Manual
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Garrett Metal Detector GTI 1500 Owner's Manual

Garrett metal detectors owner's manual
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Summary of Contents for Garrett Metal Detector GTI 1500

  • Page 3: Special Notice

    SPECIAL NOTICE The Garrett GTI 1500 metal detector with Treasure Imaging and Graphic Target Analyzer truly adds a new dimension to treasure hunting. A precision electronic instrument designed to utilize the miracles of high technology, especially to help find coins, the GTI 1500 will accomplish this task better than any other detector ever manufactured.
  • Page 4 Protect it from extreme heat and cold as well as mist, rain or blowing sand. Keep it as clean as possible.  - Garrett Metal Detectors...

  • Page 5: Table Of Contents

    CONTENTS To The Owner Assembly Touch pads Graphic Target Display Hunting Basics Operating Adjustments Control Settings Search Aids Operating Modes Setting Discrimination (Notches) Treasure Imaging Bench Testing Operating Recommendations Headphone Jack Searchcoils Batteries Recommended Accessories Maintenance Specialized Hunting Repair Service Recommended Reading RAM Book Order Form Specifications...

  • Page 6: To The Owner

    Use Treasure Imaging to identify the size of any target you locate: • Dig only "B-size" targets to avoid cans and similar trash while locating coins and most rings. • Set GTA discrimination so that you hunt only for specific targets. 6 - Garrett Metal Detectors...
  • Page 7 • Use the Target ID Guide to learn what you've found. • Pinpoint electronically to determine loca- tion of target and learn size and depth. • Find deeper treasures with computerized circuitry. Your GTI 1500, whose microprocessor- controlled circuitry has been acclaimed and proven through countless hours of field use, is unparalleled in the simplicity of its operation.
  • Page 8 Now, find your own coins and other treasures with the GTI 1500, one of the world’s most capable and universal metal detectors, yet one that is amazingly easy to operate. 8 - Garrett Metal Detectors...

  • Page 9: Assembly

    ASSEMBLY Your GTI 1500 is shipped complete in one carton: A. Control Housing B. Upper and Lower Stems C. Imaging Searchcoil D. Parts Envelope E. Training DVD & Owner’s Manual F. Warranty Registration Card Make certain all of these parts are included and are undamaged.
  • Page 10 Place the threaded bolt through the holes in the connector and hand-tighten using the remaining wing nut. Use no tools. (See image A on page 11.) 10 - Garrett Metal Detectors...
  • Page 11 Image A Image B 2. Depress buttons in the Control Housing stem and slide on the Upper Stem (see Image B above). . Depress the buttons in the Lower Stem and insert it into the Upper Stem. Buttons will pop into the holes, and you can achieve the desired stem length.
  • Page 12 (approximately four () turns). (See Image D above.) Hand tighten only. Your GTI 2500 is fully equipped with eight (8) AA batteries. 12 - Garrett Metal Detectors...

  • Page 13: Touch Pads

    GTI 1500 TOUCH PADS • Power/Hold to Reset Turns detector ON and OFF as well as returns it to factory settings when held. • Menu/Scroll Allows the Operator to scroll through the following settings to make adjustments or turn them ON or OFF. As you continue to push the Menu/Scroll button, you will see the following options: —Modes (5)
  • Page 14 Scale and size of the target indicated at the bottom of the Display Screen. • Operate Returns to operate (hunting) mode after any change or adjustment of controls. • Last Mode Returns detector to the mode (Coins, 1 - Garrett Metal Detectors...
  • Page 15 Jewelry, Relics, Zero, Custom) that was previously being used. - & + These touch pads permit precise regula- tion of the GTI 1500 . You will note that each press of a touch pad causes seg- ments on the Upper Scale to move either to the right (+) or to the left (-).

  • Page 16: Graphic Target Display

    Upper Scale Indicates target discovered; Indicates tar- get strength in Treasure Imaging mode; Indicates levels of Menu control settings. Lower Scale Discrimination segments (notches). Indicates depth of all targets in inches when in Treasure Imaging mode. 16 - Garrett Metal Detectors...
  • Page 17 Operating Status The complete operating status of your detector is shown on the screen at all times. When the TREASURE IMAGING (pinpointing) touch pad is pressed and held, size and depth of targets will also be shown. The mode in which you are searching will always be shown on the left side of the screen under the MODE heading.
  • Page 18 Size B - Oval extending to B grid lines (red): all U.S. coins, most rings and small metal trash such as pieces of pull tabs. 18 - Garrett Metal Detectors...
  • Page 19 Size C - Oval extending to C grid lines (purple): targets larger than coins and smaller than 12-oz. cans, such as large rings, small belt buckles, jewelry and such trash targets as screw tops, bottle caps and complete pull tabs. Size D - Oval extending to D grid lines (blue): larger belt buckles, large jew- elry items, 12-oz.
  • Page 20 Target ID Guide will most likely be a coin. Because continued practice in relating size and conductivity will help you identify targets before you dig them, you will dig more treasure and less trash. 20 - Garrett Metal Detectors...

  • Page 21: Hunting Basics

    HUNTING BASICS This OneTouch detector is today's most advanced; yet, its basic automatic opera- tion makes it as simple to operate as any detector ever manufactured. You can begin hunting with it immediately. No spe- cial instructions are needed beyond what's included in the next few pages.
  • Page 22 Keep the searchcoil moving at a rate of about one to three feet per second. Maintain your coil at a height of one to two inches. The coil should be kept level at all times. 22 - Garrett Metal Detectors...
  • Page 23 Discovery Detection of all metal targets will be indicated by the appearance of a Target Cursor on the Upper Scale. A cursor will appear, as shown below, to indicate every detected target and will remain for  seconds or until a new target is detected (whichever comes first).
  • Page 24 To turn OFF your detector: Simply press and release the POWER touch pad. Charles Garrett recommends that you first become familiar with your new detector by hunting for at least 10 hours in the factory preset 2 - Garrett Metal Detectors...
  • Page 25 Coins mode and that you read carefully the Warning section in this manual. By now you are also certainly impressed with the super sensitivity, depth capabili- ties and the target analysis of this detector which utilizes patented DSP (Digital Signal Processing) methods to give it advanced detection capabilities that can be matched by those of only one other detector, the...
  • Page 26 You will quickly master these techniques and learn why the GTI 1500 with DSP, Treasure Imaging and controls based on patented microprocessor technology has more accurate discrimination and better sensitivity and effectiveness than other detectors. 26 - Garrett Metal Detectors...

  • Page 27: Operating Adjustments

    OPERATING ADJUSTMENTS Status of each of the control selections will be shown on the LCD Graphic Display above the control panel touch pads. When you touch the POWER touch pad, your GTI 1500 is ready to hunt in a Coins operating mode with threshold, sensitivity (depth), tone and other controls preset at the fac- tory, as shown above.
  • Page 28 Scale. When the name of the particular mode you select is constant, while the other four are blinking, either press the OPERATE touch pad to begin hunting or the MENU touch pad to move to another control selection. 28 - Garrett Metal Detectors...

  • Page 29: Control Settings

    CONTROL SETTINGS Sensitivity (Depth) Press the MENU touch pad to display SENSITIVITY on the screen (shown with factory setting at approximately 75% as indicated on the Upper Scale), and you can use the + and - touch pads to adjust the sensitivity at which your detector will oper- ate most effectively.
  • Page 30 You can search silently or at any level of constant sound. Charles Garrett and veter- an hobbyists usually prefer to operate the instrument at a minimum level of audible sound but this is no longer necessary. 0 - Garrett Metal Detectors...
  • Page 31 The audio will increase sharply when- ever a desirable target is encountered. (Remember, a cursor will indicate every target.) When headphones are used, it will usually be necessary to decrease the threshold level since sound is more audible through headphones. Frequency This detector is capable of operating at four different detection frequencies or...
  • Page 32 (as shown above). Use the + and - touch pads to adjust audio to the volume that you prefer. Touching the + pad will make the sound louder, while touching the - will lower the volume. Since this adjustment 2 - Garrett Metal Detectors...
  • Page 33 controls the maximum volume of sound produced by the GTI 1500 only when a target is encountered, it will not affect the threshold level you have already selected as the primary audio function of your detector. When headphones are used, it will usually be necessary to decrease volume since detections sounds are louder over head- phones.
  • Page 34 (carbon or alka- line) or rechargeable batteries. To turn on the rechargeable option, press the MENU touch pad until RECHARGE is displayed. Press the (+) or (-) touch pad to activate.  - Garrett Metal Detectors...

  • Page 35: Salt Elimination

    SEARCH AIDS Salt Elimination When hunting on an ocean beach, or over any ground with high salt content, you may want to use this Search Aid to elimi- nate interference caused by wetted salt. If you wish to turn on the Salt Elimination aid, use the MENU to display Salt Elim and press + when the word is blinking to turn it on.
  • Page 36 To maximize battery life it is recommended that you make certain that the Backlight is turned off whenever it is not needed. Additional Settings Information All of the personal preference adjust- ments you have just set in the GTI 1500 6 - Garrett Metal Detectors...
  • Page 37 with the various operating functions will be retained by the detector when you press POWER to turn the detector OFF. These personal alterations are held in a non-volatile memory circuit and retained even when the batteries are removed. The detector must be turned off when batteries are being replaced.

  • Page 38: Operating Modes 8

    Some bent pull tabs and pieces of tabs may not be eliminated from detection. Successful 8 - Garrett Metal Detectors...
  • Page 39 treasure hunters, however, all understand that they must dig some junk occasionally. Correct operation of the GTI 1500 should reduce this wasted effort. Jewelry This detection mode, specifically designed to aid in hunting for jewelry, with discrimination in the detector's circuitry set to eliminate such trash targets as lower conductivity items and bottle caps.
  • Page 40 When the detector leaves the factory, Custom has been set to the Coins mode. Through use of the ACCEPT/ REJECT touch pad, a hobbyist can modify this mode's discrimination to individual specifications. And modifications will be 0 - Garrett Metal Detectors...
  • Page 41 retained by the detector's memory when it is switched OFF. Many GTI 1500 owners may rarely use the Custom mode, and will hunt only in the preset Coins, Jewelry, Relics or Zero Discrimination modes. Complete instruc- tions for setting discrimination notches for any of these modes can be found on the following four pages of this manual.

  • Page 42: Setting Discrimination (Notches) 2

    ACCEPT/REJECT touch pads, specific "notches" can be created by turning dis- crimination segments ON and OFF in any of the five operating modes. There are two methods of setting discrimi- nation in any mode. 2 - Garrett Metal Detectors...
  • Page 43 First Method: While in the OPERATE mode press the + and - touch pads to position the blinking cursor above the Discrimination Segment corresponding to the particular target to be detected or ignored. If the segment is turned on (showing), that target will be signaled audibly.
  • Page 44 OFF ACCEPT/REJECT selections will be retained only in the Custom mode. Any ACCEPT / REJECT modifications you have made in the preset Coins, Jewelry, Relics and Zero modes will be lost, since these four  - Garrett Metal Detectors...
  • Page 45 modes return to factory-set detection settings each time the detector is turned OFF and turned back ON. Custom mode discrimination changes will be lost only when POWER is held for five (5) seconds for return of factory settings. Why Use Notches? There are numerous reasons why you would want to accept or reject specific targets:...
  • Page 46 Return to factory settings by pressing and holding the POWER touch pad for 5 seconds. 6 - Garrett Metal Detectors...

  • Page 47: Treasure Imaging 7

    TREASURE IMAGING Sizing and pinpointing targets precisely are important capabilities of your GTI 1500. Furthermore, when you press and hold the TREASURE IMAGING pad, the searchcoil can remain stationary over your target. Move the coil around slightly to try to center it directly over the target. Targets must pass beneath the searchcoil, not above it.
  • Page 48 IMAGING touch pad, check the Lower Scale to determine target depth in one- inch increments. Size Imaging When press hold TREASURE IMAGING touch pad, you can observe your target’s size as shown on the Display Screen. 8 - Garrett Metal Detectors...
  • Page 49 Four typical examples: Graphic Target Imaging 1500 - 9...
  • Page 50 The Array may also appear when the target is significantly off-center from the coil. Always remember that your searchcoil must be centered directly over the target to produce correct size and depth information. 50 - Garrett Metal Detectors...

  • Page 51: Bench Testing

    BENCH TESTING This will enable you to test typical targets and to learn about the discriminating capabilities of the GTI before taking it into the field or trying to set discrimination. The following tests should be performed, as shown above with the searchcoil per- pendicular to a bench, floor or other non- metallic surface and several feet away from any metallic object:...
  • Page 52 . Begin to experiment with the ACCEPT and REJECT touch pads. Notice carefully which of the segments are illuminated as you identify various targets. 5. Be methodical. Keep written records of results and use them when hunting. 52 - Garrett Metal Detectors...

  • Page 53: Target Identification

    OPERATING RECOMMENDATIONS As you walk, scan the searchcoil from side to side in a straight line or slight arc. Keep the coil level and at a constant height of one or two inches above the ground while you move it at a rate of about one to three feet per second.
  • Page 54 Digging Since the final step in recovery usually entails digging, always make as small a hole as possible. It is quicker, requires less work and makes refilling easier. You should always fill your holes. 5 - Garrett Metal Detectors...
  • Page 55 Last Mode Use of this touch pad can be particularly helpful while scanning because it effec- tively converts your GTI 1500 into an instantaneous dual, or triple-mode detec- tor. Pressing and releasing this touch pad returns detector operations to the mode that has just previously been used.
  • Page 56 Outside electromagnetic interference and irregular ground mineralization may some- times require that you search at reduced sensitivity. Don't worry about losing "deep targets!" You won't ever be losing anything because you'll always be able to search as deeply 56 - Garrett Metal Detectors...

  • Page 57: Test Plot Construction

    as ground and atmospheric conditions permit. Attempting to operate at sensitivi- ties above a level that permits a quiet and stable operation may actually cause you to miss deep targets that you would have found had you not "pushed" the detector. Another point to remember is that when you are searching with SENSITIVITY set below the maximum under "less-than-...
  • Page 58 Coins detection mode for at least 10 hours during your “learning” phase. Remember, the more you use your detec- tor in the correct manner, the more trea- sure you will discover. 58 - Garrett Metal Detectors...

  • Page 59: Headphone Jack

    HEADPHONE JACK The headphone jack is located at the rear of the battery pack under the armrest. Headphones are a valuable accessory for any metal detector to mask interfer- ence from outside noise. Headphones are particularly essential when hunting where noise (running water, people, surf, traffic, etc.) is excessive.

  • Page 60: Searchcoils

    All Garrett searchcoils are fully submersible. 60 - Garrett Metal Detectors...

  • Page 61: Batteries

    BATTERIES The GTI 1500 is equipped with two bat- tery packs, each holding four () standard AA batteries. (It is recommended that top quality heavy duty or alkaline batteries be used. The detector is also designed to utilize nickel metal hydride (NiMH) rechargeable batteries.) It is advisable to...
  • Page 62 1. Turn OFF the GTI 1500 by pressing the POWER touch pad. 2. It is not necessary to remove the bat- tery case. Just slide it back slightly from its normal position beneath the armrest. 62 - Garrett Metal Detectors...
  • Page 63 . Slip up the two covers on the battery panel and remove them completely. . Take out the two battery holders (which are not connected by wire) by tilting the pack. (See image above.) 5. Remove the old batteries. 6. Install new batteries. Carefully observe polarity of the batteries and make certain the new batteries are aligned properly.
  • Page 64 8. Press down firmly and slide each cover back in place. Remember: The detector must be turned off when batteries are being changed. Caution: Use only high quality NiMH, car- bon, alkaline or heavy duty batteries. 6 - Garrett Metal Detectors...

  • Page 65: Recommended Accessories

    RECOMMENDED ACCESSORIES Your Garrett GTI 1500 represents the highest quality in metal detector manufac- turing. Complement it with quality acces- sories such as these from Garrett: • Headphones that will enable you to hear signals from the GTI more distinctly because they will mask other conflicting sounds from the environment.

  • Page 66: Maintenance

    • Your searchcoil is submersible. The con- trol housing is not! Never submerge the control housing, and always protect it from heavy mist, rain or blowing surf. • Disassemble the stem and wipe it clean after use in sandy areas. 66 - Garrett Metal Detectors...
  • Page 67 • When storing for a month or longer, remove batteries from the detector and from their holders as well. Graphic Target Imaging 1500 - 67...

  • Page 68: Specialized Hunting

    A-size. Whether you choose to hunt for them in a park or on a beach, Garrett's factory- set Coins mode offers discrimination that responds ideally to conditions normally encountered. You may occasionally dis- 68 - Garrett Metal Detectors...
  • Page 69 cover quantities of specific trash targets that are not being eliminated from detec- tion by factory-set discrimination. You can then use the ACCEPT/REJECT touch pad to eliminate these pesky pieces of junk, no matter which mode you are using. Just move your searchcoil across one of them, watch your Upper Scale for its response and push the ACCEPT/REJECT touch pad.
  • Page 70 Since the GTI 1500 is a motion detector, it is capable of finding only somewhat larger nuggets (the size of a BB-pellet and larger). To locate even smaller nuggets (pinhead- size and slightly larger) Garrett's Scorpion 70 - Garrett Metal Detectors...
  • Page 71 Gold Stinger is recommended. It must be emphasized, however, that prospectors, when using the GTI 1500 or any other quality detector usually prefer to operate in the Zero Discrimination detec- tion mode. When prospecting, discrimi- nation may reduce the amount of small nuggets found, but some areas contain so much iron trash that a small amount of discrimination becomes highly desirable,...

  • Page 72: Repair Service

     p.m., Central time. Before you return your detector to the Garrett factory, make certain: • You have carefully inspected batteries and their alignment. (Check batteries especially closely. They are the most com- mon cause of detector “failure.") 72 - Garrett Metal Detectors...
  • Page 73 Return any coil that you believe may be causing a problem. • Ship to Garrett Metal Detectors, 1881 West State Street, Garland, TX 7502. Foreign shipments must be authorized by a local agent or representative.
  • Page 74 UPS Blue (air) or air freight. 7 - Garrett Metal Detectors...

  • Page 75: Recommended Reading

    RECOMMENDED READING Since your Garrett GTI 1500 is a truly universal detector, all of the RAM books will be pertinent to its use. Of particular interest, however, will be the revised ver- sion of Garrett's popular Modern Metal Detectors, a basic text that will help you to understand all types of metal detection equipment and how to use them.
  • Page 76 You Can Find Gold with a Metal Detector. All hob- byists are urged to familiarize themselves with this most interesting and exciting aspect of metal detecting. 76 - Garrett Metal Detectors...

  • Page 77: Ram Book Order Form

    RAM BOOKS ORDER FORM Please send me the following RAM books: (Please indicate number of copies desired.) ___ New Successful Coin Hunting ...$9.95 ___ Treasure Hunting for Fun and Profit ...$9.95 ___ Treasure Caches Can Be Found...$9.95 ___ Ghost Town Treasures ...$9.95 ...$9.95 You Can Find Gold with a Metal Detector ___ Buried Treasures You Can Find ...$14.95...
  • Page 78 ___ Visa Card Number: ____________________________ Expiration Date of Card: ___________________ Phone Number: __________________________ Signature: ________________________________ Required on credit card purchases Name: ___________________________________ Address: _________________________________ _________________________________ City/State/Zip: ____________________________ 78 - Garrett Metal Detectors $______________ $______________ $______________ $______________ ___ MasterCard ___ Discover...

  • Page 79: Specifications

    SPECIFICATIONS Detector Type: Very low Frequency, trans- mitter/receiver, Treasure Imaging and Graphic Target Analyzer for precise target identification, multiple notch discrimina- tion. Controls: Easy access touch pads Display: High visibility LCD adjacent to touch pads; data accessible at any angle; backlight.
  • Page 80 Humidity: 0 to 95% Non-condensing Temperatures: Operating: 0 ˚ to 10 ˚ F. Storage: -20 ˚ to 150 ˚ F. Construction: High strength glass-filled nylon with han- dle-mounted control/display panel. Weight: (With 9 1/2-inch searchcoil)  lbs., 2 ozs. 80 - Garrett Metal Detectors...

  • Page 81: Mind Your Manners

    MIND YOUR MANNERS Filling holes and obeying no trespassing signs are but two requirements of a dedi- cated metal detector hobbyist. A sincere request that Charles Garrett makes to every user of one of his detectors is that each place searched be left in a better condition than it was found.
  • Page 82 • I will observe the Golden Rule, using good outdoor manners and conducting myself at all times in a manner which will add to the stature and public image of all people engaged in the field of metal detection. 82 - Garrett Metal Detectors...

  • Page 83: Trademarks/Patents

    TRADEMARKS / PATENTS GTI 1500, TreasureVision, Graphic Target Analyzer and OneTouch are TM of Garrett Electronics, Inc. Patent Protection: Garrett's high tech instruments are pro- tected by one or more of the following U.S. Patents and other Patents Pending: 5,18,151, ,98,10, ,,191, ,,192,...

  • Page 84: Warning

    • Do not disturb any pipeline, particularly if it could be carrying flammable gas or liquid. • Use reasonable caution in digging toward target, particularly in areas where you are uncertain of underground condi- tions. 8 - Garrett Metal Detectors...
  • Page 85 Graphic Target Imaging 1500 - 85...
  • Page 86 Garrett Metal Detectors 1881 W. State Street Garland, Texas 7502 T: (972) 9-6151 F: (972) 9-1881 1.800.527.011 (U.S.) sales@garrett.com www.garrett.com 86 - Garrett Metal Detectors...
  • Page 88 Garrett Metal Detectors. Copyright 2008 All Rights Reserved. 1524900.D.0408...

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