Gamma Sports 6000 User's Manual
Contents
1. gamma 5000 METAL DETECTOR OWNER S MANUAL If you do not have prior experience with a metal detector we strongly recommend that you 1 Adjust the Sensitivity to a low setting in the event of false signals Always begin use at a reduced sensitivity level Expect chatter or internal noise at high sensitivity 2 Do not use indoors This detector is for outdoor use only Many household appliances emit electromagnetic energy which can interfere with the detector If conducting an indoor demonstration turn the sensitivity down and keep the search coil away from appliances such as computers televisions and microwave ovens If your detector beeps erratically turn off appliances and lights Also keep the search coil away from objects containing metal such as floors and walls Use a 9 volt ALKALINE battery only Do not use Heavy Duty Batteries 3 gt TABLE OF CONTENTS TELMO ao O at hee magne nee anne 3 ASSEM D lt 3 e I Sen ett o OR eee a ea 4 5 Batteries x iii A ee Wi dee ge 6 Quick Start Demo ar ike hee See hind het Ls 7 Basic Of Metal Detecting 0ooooooooo 8 9 Ground Minerals e ses dead ta beds da Rea dona oe 8 Trash is A do ais desc A ete de wee ned hs 8 Identifying Buried Objects o o o oooooo 8 Size and Depth of Buried Objects 9 EM sra it Ih Sele SS Ge 9 Using Headphones 002 2 eee ee eee 9 How To Work The Gonttols 3 3 0 0242. The nail will not be detected b The nail has been discriminated out VII Press b until 80 appears a The words FOIL NICKEL PULLTAB S CAP and ZINC disappear VIII Wave the nickel a The nickel will not be detected IX Press y twice to toggle down to NOTCH Then press three times a The word NICKEL reappears on the display X Wave the Nickel The nickel is now again detected The nickel has been notched in XI Press QJ once to toggle down to ALL METALS XII Pass the quarter over the searchcoil Move the quarter closer to and farther away from the searchcoil Notice the changing depth display values at the bottom of the screen XIII Press and hold Pass the quarter over the searchcoil Move the quarter closer to and farther away from the searchcoil Notice the changing 2 digit depth display values in the middle of the screen THE BASICS OF METAL DETECTING A hobby metal detector is intended for locating buried metal objects When searching for metals underground or on the surface you have the following challenges and objectives 1 Ignoring signals caused by ground minerals 2 Ignoring signals caused by metal objects that you do not want to find like pull tabs Identifying a buried metal object before you dig it up Estimating the size and depth of objects to facilitate digging them up Eliminating the effects of electromagnetic interference from other electronic devices of ow
3. The range of ground balance settings indicated on the display range from 0 to 99 however each displayed number spans about 10 pad presses of the and buttons The actual internal ground balance settings change with each step there are a total of 1000 different settings The Sie at the upper right of the screen indicates the AMOUNT of magnetic mineralization The searchcoil must be in motion to measure this The most accurate measurement is obtained by pumping the searchcoil as in the Ground Grab procedure The indicators are as follows VL Very Low Mineralization L Low Mineralization M Moderate Mineralization H High Mineralization The two digit GROUND setting number displayed at the center of the LCD indicates the TYPE of ground mineralization Some typical ground mineralization types are 0 10 Wet salt and alkalis 5 25 Metallic iron Very few soils in this range You are probably over metal 26 39 Very few soils in this range occasionally some saltwater beaches 40 75 Red yellow and brown iron bearing clay minerals 18 79 95 Magnetite and other black iron minerals OPERATION and CONTROLS conr GROUND BALANGING continued When operating in ALL METALS mode the goal is to eliminate the sound as the coil is being pumped over the ground In some soils the sound is not completely eliminated If the ground balance adjustment is incorrect there will be a difference in the sound as the searchcoil is either moving toward or away f
4. 1982 were minted from copper Dimes quarters half dollars silver dollars Susan B Anthony and Sacajawea dollar coins Flattened aluminum cans with a stronger signal than a coin BASS TONE LOW TONE MEDIUM TONE HIGH TONE Zinc Pennies Post 1982 Copper Silver amp Brass Nails Iron Objects Pull Tabs Nickels Larger Gold Objects Many Copper Pennies amp Smallest Gold Objects amp Smaller Gold Screw Caps Pre 1982 Audio Target Identification ATI classifies metals into four categories 20 TARGET IDENTIFICATION continued 2 Digit Target Identification The 2 digit value in the middle of the screen provides a specific target value to help identify buried targets more accurately With practice in the field you will learn to associate target values with specific objects Coins are more likely to yield the same value with each pass of the coil due to their concentric shape The presence of multiple targets will yield multiple tones Trash objects are more likely to yield a different number on each pass The angle of the coil relative to an object may also influence target identification If waving coins over the searchcoil for practice wave with the flat side parallel to the searchcoil this is the position you will most often find coins buried in the ground 2 Digit TARGET IDENTIFICATION Values Some Typical Values Numeric Common for Common Category Value Range Objects Objects Iron 10 39
5. the target in inches as follows Segments Illuminated Top Segment 0 to 3 deep Top amp Middle Segment 3 to 6 deep All Segments _ Over 6 deep ome DEPTH kd DEPTH Large and irregularly shaped objects will yield less reliable depth readings When passing over an object the indicators will light up and stay illuminated for three seconds lf the depth indication varies with each sweep try sweeping at different angles there may be more than one target present With practice you will learn the difference between accurate readings multiple targets and highly erratic readings which evidence trash or irregularly shaped objects TROUBLE SHOOTING TROUBLE SHOOTING GUIDE SYMPTOM CAUSE SOLUTION Detector chatters e Using detector e Use detector or beeps erratically indoors outdoors only e Using detector near Move away power lines from power lines e Using 2 detectors in Keep 2 detectors close proximity at least 20 apart e Highly oxidized e Only dig up buried object repeatable signals Environmental e Reduce sensitivity electromagnetic until erratic interference signals cease Constant low tone Discharged battery e Replace battery or constant repeating tones e Wrong type of e Use only 9V battery alkaline battery or rechargeable LCD does not lock Multiple targets e Move coil slowly on to one target ID present at different angles or detector emits e Highly oxidized multiple to
6. u 5 lt 0s tes thee ed 10 MENU Selections Sensitivity er siei 2d be e a a 11 Disc bevel vaa sandra aaa KE 12 o A A Dada Soa Sen 13 HOM TONOS ura a da KORE 14 Volume soii rana das ts e 14 MODE Selections Discriminate 00000 cee ee 15 Al Metals aio a vals 15 PINO Ecco A Sard A 15 16 Ground Balancing 230400 hr ayes 17 19 Target Identification coca coi ee de ved Sen NG bea es 20 21 Depth And Target Display 0 cece eee eee 22 Trouble Shooting Acids Rt cakes A NA 23 Code of EMMCS iia iaa Back Cover Warranty ricardo teria ea Back Cover TERMINOLOGY The following terms are used throughout the manual and are standard terminology among detectorists ELIMINATION Reference to a metal being eliminated means that the detector will not emit a tone nor light up an indicator when a specified object passes through the coil s detection field DISCRIMINATION When the detector emits different tones for different types of metals and when the detector eliminates certain metals we refer to this as the detector discriminating among different types of metals Discrimination is an important feature of professional metal detectors Discrimination allows the user to ignore trash and otherwise undesirable objects RELIC A relic is an object of interest by reason of its age or its association with the past Many relics are made of iron but can also be made of bronze or precious metals IRON lron is acommon low gra
7. AB Sue DEPTH Dd 13 OPERATION and CONTROLS cont MENU SELECTIONS continued 4 OF TONES While the OF TONES line is highlighted use D and d to program the number of different audio tones Different target categories are identified by different audio tones in order to give you the fastest real time reference while searching Most experienced users become familiar with the tones and search without always looking at the display Use this selection to program the number of audible tones the detector will emit The default setting is 3 tones Depending on your number of tones selection audio target categories are Tones Iron Foil Nickel PullTab SCAP Zinc Dime Qtr 1 VCO VCO VCO VCO VCO VCO VCO VCO 2 Bass VCO VCO VCO VCO VCO VCO VCO 3 Bass Low Low Low Low Low High High 4 Bass Low Medium Low Low Low High High VCO originally referred to as Voltage Control Oscillator Pitch increases with increasing signal strength A given target will induce a HIGH PITCH when close to the coil but a LOWER PITCH when farther away The audio volume always varies in proportion to signal strength The closer a target gets to the coil the louder the volume o VOLUME While the VOLUME line is highlighted use D and d to change the speaker volume The default volume setting is 10 Maximum is 10 Minimum is 0 volume off At levels 1 2 and 3 high tones will be inaudible or barely audible The speaker volume will diminish as battery v
8. Arm Rest Strap optional accessory The strap is available for purchase as a separate accessory Some users prefer to use the strap when swing the detector vigorously in order to hold the detector secure against the arm Strap Silver Button The detector can also be used without the strap with no compromise to detector balance and stability under most conditions Coil Middle Stem Locking knurled G o knob E Searchoil BATTERIES The detector requires a single 9 volt ALKALINE battery battery not included Do not use ordinary zinc carbon batteries Rechargeable batteries can also be used If you wish to use rechargeable batteries we recommend using a Nickel Metal Hydride rechargeable battery The battery compartment is located on the back side of the housing Slide the battery door to the side and remove it to expose the battery compartment BATTERY LIFE Expect 20 to 25 hours of life from a 9 volt alkaline battery Rechargeable batteries provide about 8 hours of usage per charge SPEAKER VOLUME AND BATTERY CHARGE You may notice the speaker volume drop while one battery segment is illuminated With one segment flashing low speaker volume will be very apparent For loudest speaker volume select 1 or 2 tones under the OF TONES menu selection BATTERY INDICATOR The 2 segment battery indicator has 3 stages of indication These indications are accurate for a 9 volt alkaline battery Se
9. Foil 40 54 Nickel 55 59 US Nickel 57 PullTab 60 64 S Cap 65 74 Zinc 75 79 US Zinc Penny 77 after 1982 Dime 80 84 US Dime 83 US Copper Penny 82 83 pre 1982 Quarter 85 99 US Quarter 88 89 US Half Dollar 91 93 US Silver Dollar 96 98 21 DEPTH AND TARGET DISPLAY READING THE DISPLAY The Liquid Crystal Display LCD shows the PROBABLE identification of the targeted metal as well as the PROBABLE depth of the target The detector will register a consistent target identification upon each sweep of the coil when a buried target has been located and identified If upon repeated passes over the same spot the target identification reads inconsistently the target is probably a trash item or oxidized metal With practice you will learn to unearth only the repeatable signals The segment identifications are highly accurate when detecting the objects described on the label However if an object registers in a given category for an unknown buried object you could be detecting a metallic object other than the object described on the label but with the same metallic signature Also the greater the distance between the target and the coil the less accurate the target identification GOLD TARGETS Gold objects will register on the left side of the LCD scale Gold flakes will register under iron Small gold items will register under foil or Nickel Medium sized gold items will register between nickel an
10. Your Gamma 6000 metal detector is designed with these things in mind 1 Ground Minerals All soils contain minerals Signals from ground minerals can interfere with the signals from metal objects you want to find All soils differ and can differ greatly in the type and amount of ground minerals present You therefore want to calibrate the detector to the specific ground conditions where you are hunting The detector incorporates a semi automated ground balancing feature which will eliminate false signals from most types of soils But if you want to maximize the detector s target identification accuracy and depth of detection use the GROUND GRAB function to calibrate the detector to the ground where you are searching See the section on GROUND GRAB for details 2 Trash If searching for coins which will induce higher tone sounds you want to ignore items like aluminum foil nails and pull tabs These undesirable items induce lower tones You can listen to the sounds of all objects detected and decide on what you want to dig up Or you can eliminate unwanted metals from detection by using the DISCRIMINATION feature 3 Identifying Buried Objects When searching in the DISCRIMINATION mode different objects induce different tones high medium low and are classified on the display screen in different categories from left to right A 2 digit numerical reading is also provided in the middle of the display for more precise target identifi
11. all categories sequentially from detection the NOTCH control allows you to selectively include or exclude target categories from detection With each press of or the notched category moves across the display screen As you move the position of the notched category you are changing the detection status of the selected category e fa target category was previously eliminated word not visible then notching that category will return it to detection e If a target category was previously retained word is visible then notching that category will remove it from detection Only one target category at a time can be selected for notching To notch multiple categories in or out press P again while NOTCH is highlighted Each subsequent press of P allows you to set an additional notch Each time you press PP followed by the notch program will begin by changing the status of the IRON segment 12 OPERATION and CONTROLS conr MENU SELECTIONS continued NOTCH continued At any time the display screen indicates the current category notches or discrimination settings Any category whose description is not visible will not be detected For example the following settings tell us that e The nickel dime and quarter categories will be detected All other categories of targets iron foil pulltab s cap and zinc will not be detected MENU SENSITIVITY DISCRIMINATE DISC LEVEL PINPOINT NOTCH ALL METALS OF TONES GROUND GR
12. cation The DISCRIMINATION mode requires motion sweep the coil over the metal object THE BASICS continued 4 Size and Depth of Buried Objects When using the detector in the motion DISCRIMINATION or ALL METALS modes the relative depth of an object is displayed at the bottom of the display in a 3 segment format shallow medium or deep A more accurate depth reading is available in no motion mode using PINPOINT This mode displays target depth in inches This no motion mode does not require the coil to be in motion to detect metals The ability to hold the searchcoil motionless over the target also aids in tracing an outline of the buried object or in pinpointing the exact location of the object using techniques described in the pinpointing section Electromagnetic Interference EMI The searchcoil produces a magnetic field and then detects changes in that magnetic field caused by the presence of metal objects This magnetic field that the detector creates is also susceptible to the electromagnetic energy produced by other electronic devices Power lines microwave ovens lighting fixtures TVs computers motors etc all produce EMI which can interfere with the detector and cause it to beep when no metal is present and sometimes to beep erratically The SENSITIVITY control lets you reduce the strength of this magnetic field and therefore lessen its susceptibility to EMI You may want to operate at maximum strength but the prese
13. d or s cap Large gold items will register under Zinc SILVER TARGETS Silver objects will register to the right of the scale under DIME or QTR IRON All sizes of iron objects will register on the far left side of the scale This could indicate a worthless item such as a nail or a more valuable historic iron relic FOIL Aluminum foil such as a gum wrapper will register as foil A small broken piece of pull tab may also register here NICKEL Most newer pull tabs from beverage cans the type intended to stay attached to the can will register here Many gold rings will also register here PULL TAB Older pull tabs which always detached completely from the can register here 22 Many medium size gold ring also register here ZINC Newer US pennies post 1982 and Canadian 1 and 2 coins register here Many non US coins of recent vintage will also register here DIME Dimes and older copper pennies pre 1982 register here QTR Silver Dollars Half Dollars and Quarters very large iron objects like a sewer lid will register here Caution The target indications are visual references Many other types of metal can fall under any one of these categories While the detector will eliminate or indicate the presence of most common trash items it is impossible to accurately classify ALL buried objects 3 SEGMENT DEPTH INDICATOR The Depth Indicator is accurate for coin sized objects lt indicates the depth of
14. de metal that is an undesirable target in certain metal detecting applications Examples of undesirable iron objects are old cans pipes bolts and nails Sometimes the desired target is made of iron Property markers for instance contain iron Valuable relics can also be composed of iron cannon balls old armaments and parts of old structures and vehicles can also be composed of iron FERROUS Metals which are made of or contain iron PINPOINTING Pinpointing is the process of finding the exact location of a buried object Long buried metals can appear exactly like the surrounding soil and can therefore be very hard to isolate from the soil PULL TABS Discarded pull tabs from beverage containers are the most bothersome trash items for treasure hunters They come in many different shapes and sizes Pull tabs can be eliminated from detection but some other valuable objects can have a magnetic signature similar to pull tabs and will also be eliminated when discriminating out pull tabs GROUND BALANCE Ground Balancing is the ability of the detector to ignore or see through the earth s naturally occurring minerals and only sound a tone when a metal object is detected This Detector incorporates proprietary circuitry to eliminate false signals from severe ground conditions ASSEMBLY Assembly is easy and requires no tools O Loosen both Locking Collars by rotating 100 counterclockwise Insert the Upper Stem into th
15. e S Rod and click Silver Button into hole Position the lower stem with the silver Locking button toward the back Colan Using the bolt and knurled knob attach A the search coil to the lower stem Sil O Press the button on the upper end of ns the lower stem and slide the lower stem into the upper stem Adjust the stem to a length that lets you maintain a comfortable upright posture with your arm relaxed at your side and the search coil parallel to the ground in front of you Wind the cable securely around the stems Insert the plug into the matching connector on the back of the detector body Be sure that the key way and pins Knurled line up correctly Knob Silver Button Tighten both locking collars Secure the cable with the 2 velcro straps provided one on the lower stem close to the coil one on the upper stem close to the housing Coil Caution Do not force the plug in Excess force will cause damage To disconnect the cable pull on the plug Do not pull on the cable ASSEMBLY Adjusting the Arm Rest The arm rest may be moved forward or backwards by removing the single screw and nut and then repositioning the 2 piece arm rest Users with shorter arms may find the arm rest more comfortable in Screw the forward position In order to move the arm rest backwards the plastic plug must be removed from the aluminum tube Battery Compartment back side Hand grip
16. egative When the searchcoil is lowered to the ground in PinPoint or All Metals mode the machine will be silent The machine will sound off as the searchcoil is lifted away from the ground What if anything you hear in discrimination mode depends on the discrimination setting When searching in All Metals mode a negative hot rock will produce a boing sound after passing over it making it difficult to know where it is located It will not have the sound and feel of a metal object 19 TARGET IDENTIFICATION In DISCRIMINATION mode targets are identified both audibly and visually as follows 1 Different pitch tones for different types of metals 2 A 2 digit target I D 3 An illuminated icon within the target category best describing it The detector must be in DISCRIMINATION mode to identify targets The ALL METALS mode does not provide target identification AUDIO TARGET IDENTIFICATION When in the 4 tone mode tones identify targets as follows BASS TONE Ferrous objects such as iron and steel like nails and tin cans Smallest sized gold objects and steel bottle caps LOW TONE Foil pull tabs some new style nickels steel bottle caps MEDIUM TONE Newer pennies post 1982 are minted from zinc Larger gold pieces small brass objects and most bottle screw caps Most recent vintage non US coins Pull tabs old style some new style HIGH TONE Silver and copper coins large brass objects Older pennies pre
17. gments Illuminated Battery Voltage 2 segments more than 7 6 volts 1 segment more than 6 2 volts 1 segment flashing less than 6 2 volts After the battery indicator begins flashing expect the detector to shut off within 10 minutes A rechargeable battery will usually illuminate both segments throughout most of its useful charge But as soon as it drains to the 1 segment level it will then discharge very rapidly QUICK START DEMONSTRATION I Supplies Needed ea Nail a Zinc Penny dated after 1982 a Nickel e a Quarter ll Position the Detector a Place the detector on a table with the searchcoil hanging over the edge Or better have a friend hold the detector with the searchcoil off the ground b Keep the searchcoil away from walls floors and metal objects c Remove watches rings and jewelry A d Turn off lights or appliances whose electromagnetic emissions may cause interference e Pivot the searchcoil back Ill Power Up Press IV Wave each object over the searchcoil a Notice a different tone for each object Nail Low Tone Coins Sound varies in pitch and volume depending on distance from coil b Motion is required Objects must be in motion over the searchcoil to be detected in this mode V Press y twice to enter the DISC LEVEL program Then press dD until 40 appears in the center of the screen a The word IRON disappears from the display VI Wave the nail over the searchcoil a
18. in either the DISCRIMINATION or ALL METAL mode Press and hold to activate pinpoint This mode is momentary pinpoint detection is only active for as long as you keep depressed Metal targets are detected with the searchcoil motionless over the target Target identification is not possible in this mode All metal objects will induce a single monotone hum The 2 digit value in the middle of the screen represents the approximate target depth in inches Pinpoint is used to find the exact location of a target which was previously located and identified using the discrimination mode As this mode does not require motion over the target the user can move the coil more slowly and then narrow the detection field when near the target 15 OPERATION and CONTROLS cont MODE SELECTIONS continued How to Pinpoint Position the searchcoil an inch or two 2 5 5cm above the ground and to the side of the target Then press and hold Now move the searchcoil slowly across the target and the sound will communicate the target s location As you sweep from side to side and hear no sound at the ends of the sweep the target is located in the middle of that zone where the sound is loudest If the sound is loud over a wide area the buried object is large Use Pinpoint to trace an outline of such large objects Narrow It Down To further narrow the field of detection position the searchcoil near the center of the response pattern but not at the e
19. nce of EMI may make this impossible so if you experience erratic behavior or false signals reduce the sensitivity Using Headphones Using headphones not supplied improves battery life and prevents the sounds from annoying bystanders It also allows you to hear subtle changes in the sound more clearly particularly if searching in a noisy location For safety reasons do not use headphones near traffic or where other dangers are present This device is to be used with interconnecting cables neadphone cables shorter than three meters OPERATION and CONTROLS POWERING UP Press e The detector always starts in the DISCRIMINATION mode Motion is required Sensitivity is at about 70 of maximum value reads 80 All target categories are illuminated meaning that all metal objects will be detected HOW TO WORK THE CONTROLS POWER Baal ONO pone MODE button to TOGGLE between the Discrimination pp All Metals and Press MENU on to select the menu item you want to adjust Press 4 or Db Buttons Ground Grab modes Press 4 or Buttons to CHANGE THE SETTING of the active menu item to CHANGE THE SETTING of the active menu item The active menu item is The active menu item is the Highlited line on the the Highlited line on the left side of the display left side of the display PY While in DISCRIMINATE While in GROUND GRAB or ALL METALS mode mode press and hold press and hold the Pinpoin
20. nes target e Sensitivity set e Reduce sensitivity too high No power no Dead battery e Replace battery sounds e Cord not connected securely e Check connections 23 TREASURE HUNTER S CODE OF ETHICS e Always check Federal State County and local laws before searching e Respect private property and do not enter private property without the owner s permission e Take care to refill all holes and try not to leave any damage e Remove and dispose of any and all trash and litter found e Appreciate and protect our inheritance of natural resources wildlife and private property e Act as an ambassador for the hobby use thoughtfulness consideration and courtesy at all times e Never destroy historical or archaeological treasures e All treasure hunters may be judged by the example you set always conduct yourself with courtesy and consideration of others 5 YEAR LIMITED WARRANTY The Gamma 6000 metal detector is warranted against defects in materials and work manship under normal use for five years from the date of purchase to the original owner Damage due to neglect accidental damage or misuse of this product is not cov ered under this warranty Decisions regarding abuse or misuse of the detector are made solely at the discretion of the manufacturer Proof of Purchase is required to make a claim under this warranty Liability under this Warranty is limited to replacing or repairing at our option the metal detecto
21. oltage drops For maximum speaker volume use 1 or 2 tones as the low and bass tones generate the loudest sounds Volume can be set while in either the DISCRIMINATION or ALL METALS modes but only one setting applies to both modes Volume in the two modes cannot be set independently 14 OPERATION and CONTROLS conr MODE SELECTIONS There are four selections under the MODE section of the display Press W to toggle between DISCRIMINATION ALL METALS and GROUND GRAB e While operating in the DISCRIMINATION or ALL METALS mode press to activate PINPOINT mode e While operating in the GROUND GRAB mode press to automatically ground balance the detector 1 DISCRIMINATE Mode This mode is the default mode and requires the searchcoil to be in motion in order to detect and identify targets This is the mode most commonly used for continuous searching In this mode targets are identified with distinct tones and are classified in categories at the top of the display A two digit numerical value on a scale of 10 to 99 is displayed in the middle of the screen The depth range of the target is also displayed at the bottom of the display All menu items can be selected and customized in this mode 2 ALL METALS Mode This mode is similar to the Fast Autotune or SAT mode found in other detectors Only the SENSITIVITY and VOLUME menu items are adjustable in this mode 3 PINPOINT To activate this mode you must first_be
22. om ground minerals However for gold prospecting searching on a wet saltwater beach or searching in an area with so much metal trash that there is no clean ground for the detector s internal computer to sample we recommended that you manually ground balance Manual ground balancing requires a bit of skill acquired with some practice 17 OPERATION and CONTROLS conr GROUND BALANCING continued When manually ground balancing try to feel out a spot on the ground to make sure there is no metal present In order to avoid locking onto metal the detector will not ground grab where the GROUND setting is less than 40 Where the ground reads less than 40 the ground value is displayed as and manual ground balancing is required To perform the Manual Ground Balancing operation do the following 1 Select the GROUND GRAB mode The legend GROUND appears near the top of the screen The present ground balance setting is displayed 0 99 2 Physically pump the searchcoil and detector up and down over the ground Lift it about 6 inches above the ground and lower it to within 1 inch of the ground about once or twice a second You are trying to balance the sound as described on the top of page 19 a If the detector balances use this setting as a starting point for manual balancing b If is displayed press S until you find the desired setting 3 While pumping the coil press D or to change the ground balance setting
23. r returned shipping cost prepaid to First Texas Products Shipping cost to First Texas Products is the responsibility of the consumer To return your detector for service please first contact First Texas for a Return Authorization RA Number Reference the RA number on your package and return the detector within 15 days of calling to First Texas Products L L C 1465 H Henry Brennan Dr El Paso TX 79936 Phone 915 225 0333 NOTE TO FOREIGN COUNTRY CUSTOMERS This warranty may vary in other countries check with your distributor for details Factory warranty follows the channel of distribution Warranty does not cover shipping costs Copyright 2009 by First Texas Products L L C All rights reserved including the right to reproduce this book or parts thereof in any form except for the inclusion of brief quotations in a review Published by First Texas Products L LC Warranty coverage does not include the cost of transporting the detector back to an owner who is located outside of the United States of America Copyright 2009 All rights reserved including the right to reproduce this book or parts thereof in any form TEKNETICS MGAMMA 1465 H Henry Brennan El Paso TX 79936 915 225 0333 042409
24. racy of target identification is also related to distance from the coil Beyond a distance of 8 the accuracy of target identification begins to diminish All modes share the same sensitivity setting If sensitivity is adjusted in any mode the change is also effective for the other modes 11 OPERATION and CONTROLS cont MENU SELECTIONS continued 2 DISC LEVEL Use gt and d to increase or decrease DISCRIMINATION level Each time you press g more types of metals are eliminated from detection Elimination occurs from left to right When a category description for example IRON disappears from the display then all targets classified in that category will not be detected Pressing 4 reverses the discrimination process With each press of more types of metals will be included and therefore detected Discrimination is a cumulative elimination system Targets can be eliminated from left to right on the scale with each additional press of D resulting in more objects being eliminated from detection 3 NOTCH The category icon will remain illuminated until the number printed to the right of the icon is reached The number remaining illuminated in the middle of the display is the lowest target value included and therefore detected All lower value targets are eliminated from detection Use D and d to notch target categories IN or OUT while the NOTCH line is highlighted Whereas the discrimination feature eliminates
25. rching We therefore recommend that you use GROUND GRAB to most accurately calibrate the detector to the specific ground conditions where you are hunting It is a quick and automated process and will instantly grab the ground reading of any patch of ground you are standing over This process will maximize the detector s target identification accuracy and depth detection capability MTMA GROUND BALANCING PROCEDURE USING GROUND GRAB Find a spot of ground where there is no metal present a Hold the detector with the searchcoil about one foot above the ground 3 Enter the GROUND GRAB mode 3 Push and hold 4 Physically pump the searchcoil and detector up and down over the ground Lift it about 6 inches above the ground and lower it to within 1 inch of the ground about once or twice a second 5 A 2 digit ground value will appear on the display This is the Ground Balance setting 6 When the 2 digit ground value stabilizes release the button Note GROUND GRAB will not automatically balance over highly conduc tive soils such as a wet salt water beach Automatic balancing is not possi ble in soils with gound values less than 40 The screen will display and an alarm will sound if over metal or in ground with a value less than 40 MANUAL GROUND BALANCING In most situations it is preferable to use GROUND GRAB to automatically ground balance Generally it is best to first let the detector automatically cancel interference fr
26. rom the ground It may sound like you are either pulling the sound out of the ground or pushing the sound into the ground If the sound is louder as you raise the searchcoil increase the ground balance setting e If the sound is louder as you lower the searchcoil reduce the ground balance setting NOTE Experienced users often prefer to adjust the ground balance to get a weak but audible response when lowering the searchcoil This is called adjusting for positive response Positive and Negative Response The purpose of ground balancing is to adjust the metal detector to ignore ground minerals If the setting is incorrect ground minerals will give either a positive or a negative response depending on which direction the adjustment is off POSITIVE RESPONSE If the G B setting is too high a number the response of minerals will be positive This means that when the searchcoil is lowered to the ground in PinPoint or All Metals mode the sound will get louder as the searchcoil approaches the ground The sound will grow quieter as the searchcoil is raised What if anything you will hear in discrimination mode depends on the discrimination setting When searching in All Metals mode if ground balance is properly set to cancel the ground and you sweep over a positive hot rock the rock will give a zip sound similar to that of a metal object NEGATIVE RESPONSE If the G B setting is too low a number the response of minerals will be n
27. t button to the Pinpoint button to actuate GROUND GRAB actuate PINPOINT 10 OPERATION and CONTROLS cont MENU SELECTIONS 1 SENSITIVITY Use and to increase or decrease sensitivity while the SENSITIVITY line is highlighted Maximum sensitivity setting is 99 Minimum sensitivity setting is 05 If the detector beeps erratically or beeps when there are no metal objects being detected reduce the sensitivity The searchcoil produces a magnetic field and then detects changes in that magnetic field caused by the presence of metal objects This magnetic field that the detector creates is also susceptible to the electromagnetic energy produced by other electronic devices Power lines microwave ovens lighting fixtures TVs computers motors etc all produce EMI which can interfere with the detector and cause it to beep when no metal is present and sometimes to beep erratically Notice that the sensitivity settings behave differently above 90 From 05 to 90 gain is changing Above 90 the threshold level changes Setting above 94 will be noisy or sound erratic HOW DEEP WILL IT GO The Gamma 6000 Metal Detector will detect a coin sized object like a quarter to a distance of about 11 28cm from the searchcoil at maximum sensitivity Large metal objects can be detected to a depth of several feet Detectability is directly related to the size of the metal object the larger the object the deeper it can be detected Accu
28. xact center release O and then quickly press and hold it again Now you will only hear a response when the searchcoil is right over the top of the target Repeat this procedure to narrow the zone even further Each time you repeat the procedure the field of detection will narrow further Consider Purchasing a Pinpointer When you kneel down to unearth an object you may find it frustrating as the object can appear exactly like the surrounding soil You may hold the object in your hand and find it necessary to pass a handful of dirt over the searchcoil to see if it contains metal An easier way is to use a handheld pinpointer It is a probe like device which is poked into the ground making close up pinpointing a snap reducing digging time and minimizing the size of the holes you will dig TEKNETICS offers a robust and inexpensive pinpointer designed for this purpose 16 OPERATION and CONTROLS cont GROUND BALANCING 4 GROUND GRAB All soils contain minerals Signals from ground minerals interfere with the signals from metal objects All soils differ and can differ greatly in the type and amount of ground minerals present This detector incorporates ground balancing algorithms which eliminate interference caused by the ground minerals found in most soils The GROUND GRAB and MANUAL GROUND balancing feature allows the user to more precisely calibrate the detector s internal circuitry to the specific ground you are sea
Download Pdf Manuals
Related Search