sovereign gt - Great Lakes Metal Detecting
Contents
1. Check headphones and their connection Check for sand or grit between coil cover and coil No Target Response Ensure the detector is turned On Check battery charge and battery connections Check coil connection Check headphones and their connection Check Disc and Notch settings In the unfortunate circumstance that the detector needs to be returned to Minelab for service please fill out the Minelab Service Repair Form on page 33 or a photocopy of the same and enclose it with the detector Please supply as much detail about the fault as possible as this will assist our service engineers to rectify the problem quickly and efficiently p30 14 specifications AW 14 Specifications www minelab com SOVEREIGN These specifications are subject to change without notice Features Length Maximum 55in 1400mm Minimum 38in 965mm Weight Control Box 20 3oz 568gms Tornado 1000 coil 23oz 654gms Technology Broad Band Spectrum BBS Transmit Frequency 17 frequencies 1 5 25 5khz Ground Balance Automatic Ground Tracking Arm Rest Aluminium with Neoprene cover amp strap Battery System Alkaline 8 x 1 5V AA or NiMH battery pack 12V 1000mAH Mains Charger 110v USA 230V EU 240V AUS Vehicle Charger 12V Cigarette Lighter plug Target ID Meter Digital Audio Loudspeaker2. Volume 7 2 Volume Control and On Off Switch This control located at the bottom left of the control panel is used to adjust a target s signal volume in addition to switching the Sovereign GT On or Off When in the fully anti clockwise position the Sovereign GT is turned Off Turning the control clockwise will click the Sovereign GT On Continuing to turn this control in a clockwise direction will increase the volume of the target signals At the most clockwise position the volume will be set at the maximum position Minelab recommends this position for most circumstances However users should be aware that when using headphones if a large target is detected close to the surface the resulting loud signal may cause some hearing discomfort in areas like this a lower volume should be selected p13 MINELAB SOVEREIGN www minelab com 7 3 Sensitivity Control The Sensitivity control located at the bottom of the control panel allows the level of sensitivity to be adjusted to suit the conditions in which you are detecting It is often thought of in terms of a depth control and it is to a point but more Sensitivity importantly it also makes the unit more or less sensitive to interference caused by ground mineralisation and electromagnetic fields Auto At the most anti clockwise position this control clicks into the Auto position In this setting the Sovereign GT will automatically adjust the level
3. In summary for greatest detection depth Keep the coil sweep as parallel to the ground as possible Turn the sensitivity knob as anti clockwise as possible within the manual region so that minimal false signals occurs This setting will need to be altered depending on the mineralization or sand moisture level Advanced users operating inland can operate the unit in either Auto or in Manual In more mineralised soils a reduced Manual setting is recommended Note that hot rocks Roman Pennies or some ancient red orange brown pottery or tiles may cause the unit to respond as if the targets are ferrous This is not a false signal but the correct response and indicates that the unit is set at a relatively high sensitivity It is also highly recommended that a very slow sweep of the coil across the ground will reduce false signals If detecting non ferrous items in a high trash area a beginner may prefer to use Auto sensitivity and Disc Iron Mask Off see chapter 7 5 1 as this setting will provide a smoother operation and keep broken or chopped signals to a minimum Advanced users operating in non mineralised soils or areas of high trash concentration should set the sensitivity control out of Auto and into the variable Manual region The control should be set as anti clockwise as possible out of Auto and into the variable manual region so that minimal false signalling occurs This setting will depend on the degree o
4. shaft assembly 5 4 Shaft Mount the Control Box a Position the control box so that the recess in the control box 2 is aligned with the leading edge of the mounting clip 9 Push the forward section of the control box upwards until the trigger clicks indicating that the control box is secured Figure 5 Mounting the control box on the shaft b Firmly wind the cable around the shaft until it reaches the control box Note Leave enough slack at the bottom of the cable near the coil to adjust the coil position without straining the coil cable c Connect the coil connector 14 to the plug on the rear of the control box 2 d Use Velcro tabs 15 to secure the cable in the correct position on the shaft maintaining slack at coil and control box RO Note Weather Protection The hipmount bag available as an accessory item is designed so that it can be used to weatherproof your control box while you are detecting in inclement weather The hipmount bag is designed to protect the control box while still on the shaft as well as in the hipmount configuration The control box is positioned into the hipmount bag with the slot for the mounting bracket positioned at the back The velcroed panel is then wrapped across the top of the stem p8 MINELAB www minelab com SOVEREIGN 5 5 Hipmounting Chestmount Hipmounting is an alternative to mounting the detector on the shaft and sig
5. P Point pinpoint is a specialized position for pinpointing the location of a target once found Pinpoint gives a short signal as the coil passes over the target which can assist in knowing exactly where to dig your hole As you pass repeatedly across the target you will notice that the target signal becomes shorter and sometimes weaker with repeated passes This will help you locate the exact position of the target under the coil If you need to repeat the process switch out of Pinpoint into Tracking and then back to Pinpoint again Note You should not search in Pinpoint as the ground balance is disabled and the detector can become erratic TIP If you are searching in Disc and want to locate the position of the target you can switch into All Metal and use the Pinpoint mode When operating in Disc the Pinpoint is disabled until you switch into All Metal p21 MINELAB SOVEREIGN www minelab com Bad 7 9 Noise Cancel When detecting in some areas the threshold may become chattery or unstable This is often caused by electricity or radio transmission and did 2 most commonly of all other detectors The noise cancel switch on the sini Sovereign GT allows the operator to select a different search band ance which will often overcome this effect If detecting in pairs or a group or when you experience instability due to interference switch to the other band to see if this overcomes the problem The selection of
6. amp 1 4 inch headphone jack Controls On Off Volume 1 turn pot Sensitivity 1 turn pot Threshold 1 turn pot Discrimination level adjust 1 turn pot Notch filter 1 turn pot All Metal Disc with Iron Mask On Disc with Iron Mask Off 3 pos switch Threshold Silent Search 2 pos switch Ground Track Fixed Pin Point 3 pos switch Noise Cancel 2 pos switch Accessories Tornado 800 Slimline coil 8 inch Double D waterproof Tornado 1000 Slimline coil 10 inch Double D waterproof Alkaline Battery pack 8 x 1 5v AA NiMH Battery Pack 12V 1000mAH Car Charger 12V Cigarette Lighter Plug Hip Mount Bag with viewing window amp shoulder strap Rain Cover Meter Bag with viewing window Carry Bag Protective transport bag Headphones 32 ohms Warranty Control Box 2 years Coil 2 years Excluding batteries Optional accessories Note Minelab reserves the right to make changes without notice and offer different configurations in different countries p31 AM 15 warranty and service SOVEREIGN www minelab com Minelab Service Repair Form Today s Date Detector Model Serial No Purchased From Purchase Date Parts being returned Description of Fault Owner s Name Address Phone Day Home Fax Email p32 MINELAB SOVEREIGN GT D
7. anti clockwise position ensure the Notch control is also set to this position then ferrous metals will be ignored and the Sovereign GT will not produce a signal beep for them however large ferrous objects may produce short pops or clicks On the other hand non ferrous targets will be accepted and elicit a clear signal beep Typical ferrous objects encountered by treasure hunters are nails screws washers bits of wire etc These objects are generally not considered to be of value so it is a distinct advantage to be able to ignore them while detecting Objects that will cause the Sovereign GT to produce a signal beep will be non ferrous metals including such items as aluminium foil most jewellery pull tabs coins bottle tops gold silver brass etc Not all of these non ferrous objects are considered valuable Therefore by using the Disc control the Sovereign GT can be adjusted to ignore some of the less valuable non ferrous objects while still locating most valuable targets The Disc control is a one turn potentiometer continuously variable with numerous graduations as a guide for the setting of the control Turning the Disc control clockwise will increase the discrimination level and non ferrous objects of lower conductivity will be ignored pi7 MINELAB SOVEREIGN www minelab com 7 6 Discrimination Control Continued The Sovereign GT uses the electrical conductivity of the object to determine the
8. around the world identified a number of common problems facing detector operators including Loss of detection depth in mineralised ground Inaccurate target identification beyond 5 or 6 inches Inability to detect good targets in close proximity to iron trash Erratic operation when searching salt water beaches Most detectors on the market operate on a single or dual frequency Although this technology has served the industry well for years Minelab s scientists found that a frequency that worked well in one area would often offer only marginal performance when used in another location Ground mineralization trash content and target size all had an effect on how well a detector transmitting a single frequency would operate The BBS circuit automatically transmits a number of frequencies simultaneously a feature which is unique to Minelab metal detectors Ranging from 1 5 to 25 5 kHz in 1 5 kHz increments the signal received from the coil is analysed and information is relayed to the operator via the speaker headphone and meter if attached Through the use of so many frequencies the Sovereign GT is designed to locate and accurately identify valuable targets in variable ground and high trash areas Essentially when using a Sovereign GT with BBS technology it is like swinging a number of single frequency detectors at the same time Because BBS operates in a number of frequencies that no other detector does BBS detectors su
9. between the equipment and receiver Consult your local dealer or an experienced radio TV technician for help EC Conformity NOTE This product complies with the essential requirements of EMC Directive 89 336 EEC table of contents MINELAB www minelab com SOVEREIGN 1 INTRODUCTION 3 2 BBS TECHNOLOGY 4 3 LIST OF PARTS 6 4 ACCESSORIES 6 5 ASSEMBLING THE DETECTOR 7 5 1 Lower Shaft Assembly 7 5 2 Armrest Upper Shaft Assembly 7 5 3 Completing the Shaft Assembly 8 9 4 Shaft Mount the Control Box 8 5 5 Hipmounting Chest Mount 9 B BATTERIES 10 6 1 Installation of NiMH Battery Pack 10 6 2 Installation of Alkaline Batteries 10 6 3 Low Battery Warning and NiMH Recharging 11 6 4 Using your NiMH Chargers 11 p1 MINELAB table of contents SOVEREIGN www minelab com T CONTROL PANEL 12 7 1 Quickstart Operating Instructions 12 7 2 Volume Control and On Off Switch 13 7 3 Sensitivity Control 14 1 4 Threshold Control 15 7 5 Disct All Metal Switch 16 7 6 Discrimination Control 17 7 7 Notch Variable Control 19 7 8 Ground Balance Switch 20 7 9 Noise Cancel 22 7 10 Audio Output 22 8 DIGITAL TARGET IDENTIFICATION METER 23 9 PRACTISING THE CONTROLS 26 10 TREASURE HUNTING TIPS 27 11 ENVIRONMENTAL CONCERNS 28 12 DETECTOR CARE 29 13 TROUBLESHOOTING 30 13 SPECIFICATIONS 31 14 WARRANTY amp SE
10. full depth The Sovereign GT is simple to operate having very few controls that require adjustment after they have been set The extremely advanced yet simple to use discrimination features enable you to accurately select only the types of metal objects that you want to find and to ignore those that you consider junk The variable signal tone responses enable you to accurately identify the object found before you recover it If you have any questions or comments regarding the Sovereign GT or any other Minelab product then please feel free to contact us via your local Authorised Minelab Dealer or write to us direct Minelab Electronics wish you every success in your treasure hunting Please Note Since there may be a range of options available in this model of detector equipment may vary according to the product number or the country of purchase Certain descriptions and illustrations may differ in this manual from the exact model that you have purchased Minelab reserves the right to respond to ongoing technical progress by introducing changes in design equipment and technical features at any time p3 ANT 1 introducing the Sovereign GT SOVEREIGN www minelab com 2 BBS Technology When developing BBS technology Minelab s scientists first looked at technology that was already available in the market and identified its limitations in field use Discussions with seasoned treasure hunters from
11. in the ground and different ground conditions Target Recognition Table Object Type Reading Object Type Reading US quarter non ferrous 170 AUS 20c non ferrous 165 Contact Details Minelab USA Minelab Electronics Pty Ltd Minelab International Limited 871 Grier Drive Suite B1 PO Box 537 Torrensville Plaza Laragh Bandon Las Vegas Nevada 89119 South Australia 5031 Co Cork UNITED STATES OF AMERICA AUSTRALIA IRELAND email minelab minelabusa com email minelab minelab com au email minelab minelab ie tel 1 702 891 8809 tel 61 8 8238 0888 tel 4353 23 52101 N VA MINELAB SOVEREIGN da www minelab com X N
12. minimum which removes the risk of discriminating a valuable object CONDUCTIVITY LOW HIGH CONDUCTIVITY CONDUCTIVITY DISC NOTCH FOIL LOW COINS PULL TABS HIGH COINS COPPER SILVER AND RINGS AND RINGS BRASS and LEAD FERROUS NON FERROUS Figure 16 Ignoring targets using the Disc and Notch controls TIP It is very important that you recognize the conductivity level of common coins jewellery and trash targets so that you know what items will be accepted or rejected at various levels We recommend that you read and follow Chapter 9 Practising the Controls to be familiar with common targets in your area NOTE If operating with Threshold the operator will hear that a target has been discriminated or notched out by the threshold going null silent and can determine if it was discriminated or notched by the tone of the returning threshold ie if the threshold returns in a deep tone the object was discriminated and if the threshold returns in a higher pitch it was notched out p19 MINELAB SOVEREIGN www minelab com track 7 8 Ground Balance switch Track Fix Pinpoint mm F iU When operating in Disc mode the Sovereign GT uses digital filtering to compensate for ground effects and the Track Fix Pinpoint function is disabled P Point When operating in All Metals Minelab s world renowned Automatic ground balance is operating to overcome the effects of variable mineralized soils This au
13. of sensitivity to the most stable level under the prevailing conditions Beginners should operate the unit in Auto until they become more competent in its operation Turning the control clockwise will click the Sovereign GT out of the Auto setting into manual sensitivity As this control continues to be turned in a clockwise direction the level of sensitivity will be reduced At the most clockwise position the Sovereign GT is set at minimum sensitivity Experienced operators when detecting in wet sand at the beach should set the Sensitivity control out of Auto and slowly turn the control clockwise until minimal false signalling is experienced This will give the maximum sensitivity while maintaining a smooth threshold In general the more moist the beach sand the more clockwise the knob must be turned When operating the Sovereign GT in heavily mineralised ground the operator should again reduce the sensitivity until the ground balance is able to cope with the mineralisation NOTE Often a sensitivity setting that gives a smooth threshold is preferable to a high sensitivity that causes undue noise or instability that makes it difficult to hear subtle target signals Detecting with a smooth threshold will often mean that you are able to hear targets to a greater depth than with a noisy threshold The incidence of false signalling is minimized if the operator concentrates on sweeping the coil as parallel to the ground surface as possible
14. type of metal detected and based upon the Disc control setting will either ignore or accept the object The most effective way to demonstrate this is to consider a number of objects all of varying conductivity placed in order of conductivity on the ground see figure 12 CONDUCTIVITY LOW HIGH CONDUCTIVITY CONDUCTIVITY FOIL LOW COINS PULL TABS HIGH COINS COPPER SILVER AND RINGS AND RINGS BRASS and LEAD FERROUS NON FERROUS Figure 12 Target conductivity Turn the Disc control further clockwise and objects of greater conductivity will be ignored If the Disc control is set to ignore the pull tab this will mean that all objects having a similar or lower conductivity than the pull tab will be ignored while objects of higher conductivity will still be accepted see figure 13 CONDUCTIVITY LOW HIGH CONDUCTIVITY CONDUCTIVITY FOIL LOW COINS PULL TABS HIGH COINS COPPER SILVER AND RINGS AND RINGS BRASS and LEAD FERROUS NON FERROUS Figure 13 Discriminating targets based on conductivity Figure 13 shows some common objects and where the Disc control would have to be set to ignore them As a general rule the two objects treasure hunters most commonly wish to ignore are aluminium foil and pull tabs As can be seen in Figure 13 both of these objects cover a significant range on the Disc control The conductivities of objects that the user wishes to accept or ignore often overlap so setting the Disc control
15. 9 AM 6 batteries SOVEREIGN www minelab com 6 Batteries Your Sovereign GT can be powered by either Alkaline batteries 8 x AA or the Minelab rechargeable NiMH battery pack A mains charger and or 12 volt car charger are also available to recharge the NiMH batteries wherever you are These accessory items are available from your authorised Minelab Dealer 6 1 Installation of NiMH Battery Pack a Ensure your NiMH pack is fully charged b Place the base of the battery pack at the rear of the battery compartment A Push the front edge of the battery pack into position B The two battery clips will click into position to hold the battery pack in place see figure 9 Note The NiMH battery pack is Figure 8 Installing the factory sealed and does not open battery pack 6 2 Installation of Alkaline Batteries The 12 Volt Alkaline battery pack is made to hold 8 AA alkaline batteries These can be used as your day to day pack or as a back up if you are using NiMH batteries a Ensure the detector is switched Off before opening the battery compartment BATTERY ORIENTATION b Remove the battery pack housing from the control box by pushing down on the tabs c Slide open the lid on the battery pack d Place 8 AA alkaline batteries 17 into the base of the alkaline pack 16 Ensure they are aligned as shown in figure 10 and as indicated inside the compartment e Slide the battery lid cl
16. Band 1 or Band 2 doesn t affect the performance strength or sensitivity of the detector Its only purpose is to stabilise and lessen the effects of external interference Note If there is no interference in the area the operator is unlikely to notice any difference between Band 1 and Band 2 7 10 Audio Output The Sovereign GT has a built in speaker so that the operator can hear the threshold and target signals It is however recommended to use headphones as these will allow the operator to hear faint targets better and cut out environmental noise such as traffic others talking or the wind The audio output of the Sovereign GT is available through either the in built speaker or via a 1 4 stereo headphone jack When a pair of headphones is plugged in the loudspeaker is disconnected Headphones are recommended for serious treasure hunting for several reasons they are more sensitive to slight target signals than the loudspeaker and their use will increase battery life The socket will accept most stereo headphones with a 1 4 jack If your headphones have a Stereo Mono switch set it to Stereo Minelab recommends headphones to be between 32 and 100 Ohms p22 8 digital target indication meter A www minelab com SOVEREIGN 8 Digital Target Indication Meter available as accessory The Digital Target meter has been designed to aid in the identification of metal targets before their recovery It provides a digital display
17. Contact Details Minelab USA 871 Grier Drive Suite B1 Las Vegas Nevada 89119 UNITED STATES OF AMERICA email minelab minelabusa com tel 1 702 891 8809 e www minelab com Minelab Electronics Pty Ltd PO Box 537 Torrensville Plaza South Australia 5031 AUSTRALIA email minelab minelab com au tel 61 8 8238 0888 Minelab International Limited Laragh Bandon Co Cork IRELAND email minelab minelab ie tel 4353 23 52101 MINELAB MINELAB SOVEREIGN GT 2005 Minelab Electronics Pty Ltd This document contains proprietary information that is protected by copyright Apart from any use as permitted under the Copyright Act 1968 no part may be reproduced by any process without written permission from Minelab Electronics Pty Ltd 118 Hayward Avenue Torrensville SA 5031 Australia Notice The words Sovereign Broad Band Spectrum amp BBS are all trademarks of Minelab Pty Ltd WARNING This document contains Minelab Electronics Pty Ltd rights technical data or restricted rights data or both Patents and trademarks apply Disclaimer The Minelab metal detector discussed in this operating manual has been expressly designed and manufactured as a quality hobbyist metal detector and is recommended for use in coin treasure and general metal detection in non hazardous environments This metal detector has not been designed for use as a mine detector or as a live munitions detection tool Please rea
18. RVICE Service Repair Form 32 p2 1 Introducing the Sovereign GT AM www minelab com SOVEREIGN 1 Introduction Congratulations on purchasing Minelab s Sovereign GT detector The Sovereign GT metal detector has been designed for general purpose detecting with features to suit the coin and treasure hunter plus automatic ground balance for the gold fields The Sovereign GT detector uses Minelab s unique Broad Band Spectrum BBS technology which enables the Sovereign GT to automatically transmit simultaneously in multiple frequencies The benefits of multiple frequency technology are numerous and include increased depth greater sensitivity to non ferrous metal objects increased accuracy in discrimination and increased accuracy in target identification Add to this Minelab s automatic ground balance and the Sovereign GT becomes a very versatile all purpose detector The Sovereign GT is designed to locate valuable metal objects in high trash areas and in areas of extreme salt or mineralisation conditions commonly encountered by gold and treasure hunters around the world When using a single or dual frequency detector under these conditions a detectorist may experience a significant loss of detection depth and discrimination accuracy However the Sovereign GT with its BBS technology and automatic ground balance compensates for interference from these ground conditions and enables you to penetrate deeply and discriminate accurately at
19. arklands or properties where the grassland or lawn is sensitive to disturbance always use special tools to enable the recovery of targets without digging large holes This retains the surface plug of grass and soil to be returned undisturbed All holes that have been dug must be properly refilled Not only is it environmentally unacceptable to not fill in holes it is also dangerous The use of headphones when detecting will also reduce external noise sometimes an annoyance for other operators in the area Take away and properly dispose of any junk that is found or produced such as nails tin cans or flat batteries Leaving an area scarred can result in action being taken to prevent the use of metal detectors which will spoil this fascinating hobby p28 12 detector care M www minelab com SOVEREIGN 12 Detector Care The Sovereign GT is a high quality electronic instrument finely engineered and packaged in a durable housing Taking proper care of the detector is mostly common sense Do not leave alkaline batteries in the control box when the detector is not in use for any period exceeding two weeks Damage caused by leaking batteries can be severe and will void the warranty through negligence f temperatures are very high do not leave the detector in the sun for longer than necessary Covering it when not in use will help protect it Try to avoid leaving it in a closed trunk or in a car sitting in sunlight Whi
20. can be used in a variety of ground conditions The bottom line is that when using a Minelab detector such as the Sovereign GT with its BBS technology you will find good targets more often p5 ANT 2 list of parts SOVEREIGN www minelab com 3 List of Parts The box in which the Sovereign GT is shipped should contain the following items Please check that all of these items are in the box See note e Control Box e 10 or 8 Round Tornado coil inc skid plate attached e 2 Piece Shaft Assembly inc Fiberglass lower shaft Black Aluminium Armrest inc nuts amp bolts 2 part Arm Rest Neoprene Cover Arm Rest Strap 2 part Rear Control Box Bracket Battery Pack Velcro Straps 2 pair Teardrop Washers 2 Nylon Nuts and Bolts Warranty Card e Instruction Manual Note There may be variations to the items included in different countries so if you believe there may be something missing check with your dealer supplier that it is standard issue 4 Accessories The following accessories are available to further improve your machine Digital Target Identification Meter Alkaline Battery Holder holds 8 x AA Batteries NiMH rechargeable battery Mains Charger 240v 230v or 110v 12V NiMH Vehicle Charger Headphones Hipmount Bag with Raincoat Protective Cover for Control Box Meter Protective Cover amp hipmount Bag Padded Detector Transport Bag Minelab Padded S
21. ch as the Sovereign GT can find a broad range of objects that no other individual detector has the ability to find p4 MINELAB www minelab com SOVEREIGN The Sovereign GT combines Minelab s unique multiple frequency BBS technology with automatic ground balance and improved signal processing to give Greater detecting depth Consistent sensitivity over a wide range of targets Good target identification amp discrimination of trash e e e e Operation in mineralised ground Therefore the treasure hunter is more likely to detect targets normally missed by other detectors One of the major overall benefits of BBS technology is that although it automatically operates at so many frequencies all at the same time it is actually easier to use than most of its competitors Because it is microprocessor controlled all you need do is set the threshold discrimination and volume and the rest is done for you automatically Most coin detectors do not work well on saltwater beaches and Pulse Induction detectors designed for beach use have very little or no Discrimination ability The Sovereign GT not only performs flawlessly on a saltwater beach whilst discriminating targets with amazing accuracy it also has a true ground balancing all metal mode that allows operators to find very low conductive items such as gold nuggets and ferrous based relics in mineralised soils A BBS detector will penetrate deeply discriminate accurately and
22. d the operating manual prior to using your new detector Warranty and Service There is a two year parts and labour warranty for the electronic control box of the Sovereign GT Conditions apply Please refer to the Warranty Card for further details Note Please return the enclosed warranty card correctly filled out to your dealer or direct to Minelab Electronics This will assist Minelab to service your needs promptly The Minelab warranty does not cover damage caused by accident misuse neglect alteration modifications or unauthorised service FCC Compliance NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re orient or relocate the receiving antenna of the radio or television Increase the separation
23. e detector in a stationary position with the coil flat on the ground c Set the Sensitivity control on the Control box to Auto extreme anti clockwise d If the threshold is varying because of electrical interference adjust Sensitivity clockwise towards minimum until a constant threshold is present e Slowly pass a common coin across the coil and finely adjust the Calibration control to the nearest number divisible by 5 e g US quarter set to 170 AUS 20c set to 165 f Slowly pass additional coins and other common targets across the coil and record the results on the target recognition table shown on page 25 This table will become an excellent guide when used in conjunction with the Digital Target Indicator until the various target responses become familiar This meter should not be solely relied upon for discrimination It is important to use the other features of the Sovereign GT to aid in the process of discrimination Be aware that some similar objects may vary in Target Indication readings because of changes in composition For example gold rings will produce different readings depending upon the purity of the gold and the size of the band Coins minted in different years may have different alloy combinations and so the reading will differ The Target Indication readings will also be influenced by an object s orientation the length of time it has been buried in the ground and different ground conditions p24 MINELAB
24. ed to the rear of the meter to the center position of its range b Place the detector in a stationary position with the coil flat on the ground c Set the Sensitivity control on the Control box to Auto extreme anti clockwise d If the threshold is varying because of electrical interference adjust Sensitivity clockwise towards minimum until a constant threshold is present Slowly pass a common coin across the coil and finely adjust the Calibration control to the nearest number divisible by 5 e g US quarter set to 170 AUS 20c set to 165 f Slowly pass additional coins and other common targets across the coil and record the results on the target recognition table shown below This table will become an excellent guide when used in conjunction with the Digital Target Indicator until the various target responses become familiar This meter should not be solely relied upon for discrimination It is important to use the other features of the Sovereign GT to aid in the process of discrimination Be aware that some similar objects may vary in Target Indication readings because of changes in composition For example gold rings will produce different readings depending upon the purity of the gold and the size of the band Coins minted in different years may have different alloy combinations and so the reading will differ The Target Indication readings will also be influenced by an object s orientation the length of time it has been buried
25. f soil mineralisation and metal junk concentration and may need to be altered as the environment changes p14 7 control panel AN www minelab com SOVEREIGN 7 4 Threshold Control Located at the bottom right of the control panel the Threshold control allows for adjustment of the background hum This background threshold or num aids in the x location of targets Threshold Small targets or large deep targets may not produce a distinct target signal but rather cause only a slight change in the threshold tone Ideally this control should be set to a position where the threshold tone is just audible At this level the presence of small or deep targets will be more easily recognised Turning the Threshold control in a clockwise direction will increase the threshold level At the most clockwise setting the threshold is at its maximum A threshold level that is too high will mask out the small or deep targets while a silent or non audible threshold may not allow the small change in threshold tone created by small or deep targets to be heard Threshold 7 4 1 Silent Search Threshold When in the discriminate mode the Sovereign GT will vary the tone of an audio signal 7 depending on the conductivity of the target ie a highly conductive target will produce a high Silent pitched tone while a less conductive item such as foil will produce a lower pitched tone Search The advantage of the Sovereign GT over other detecto
26. ger voltage Only use the appropriate mains charger for the country you are in 6 4 Using your NiMH Chargers Plug the charger into the socket on the rechargeable NiMH battery pack and plug the charger into the power source and then switch the power source on The car charger has a red light that indicates that it has power A green light will appear on the battery pack during charging A completely flat battery will take approximately 12 14 hours to fully charge The green light on the battery pack will fade dim once it is charged fully A fully charged NiMH pack will give between 15 and 20 hours detecting time depending on the number of targets found and the level of threshold used 12V CAR MAINS yo SR CHARGER Figure 10 Car and mains battery chargers p11 ANT 7 control panel SOVEREIGN www minelab com 7 Control Panel This section gives detailed descriptions of the Sovereign GT s controls and functionality It is important that this section is read carefully as it will provide all the information required to set and adjust these controls It may be beneficial to refer back to this section in the future Band 1 Bafta 2 Search Noise Cancel lala On Figure 11 The Sovereign GT Control Panel e Volume CI Threshold iz i K on gt 5 n j Uu 7 1 Quickstart Operating Instructions To start detecting as soon as possible here are some Quicksta
27. igital Target Identification Meter The Digital Target meter has been designed to aid in the identification of metal targets before their recovery It provides a digital display of the target ID tones produced by the Sovereign GT detector and connects between the search coil and the control box without requiring any modification to the detector s electronics Note The meter has no negative effect upon the operation or overall performance of the detector it simply provides easier target recognition It is also very useful for people with poor hearing Installation of Meter a Plug the coil connector 14 into the socket 19 on rear of the meter box 19 winding the excess cable around the shaft as close to the meter and away from the coil as possible b Plug the meter cable connector 20 into the control box 2 plug winding the excess cable around the upper shaft 4 see below c If hipmounting the control box secure the meter cable to the shaft of the detector using the Velcro straps provided d Loop the meter cable twice through the belt loop of the hipmount bag before connecting it to the control box This reduces any stresses placed on the meter cable caused by hipmounting and reduces the possibility of failure of the cable The meter requires no batteries www minelab com Calibration of Meter Before using the Digital Target Meter it is necessary to calibrate it as follows a Set the Calibration control knob situat
28. isation of the soil this may take a number of pumps of the coil It is important that during ground balancing your coil is positioned parallel to the ground and that there is no metal in the ground or close to the coil If you cannot achieve a ground balance try again a few feet away in case there is a metal target under your first location or reduce the sensitivity Once you have achieved ground balance switch into Fixed and start detecting If the area you are searching is variable mineralisation you will need to periodically switch back to Track to reground balance In areas of highly variable ground you can stay in Track mode to search Note Be aware that if searching in Track it is possible with repeated sweeps across a target to track out a weak signal therefore always switch to Pinpoint or Fixed to recover the target 7 8 2 To ground balance in non mineralized soils If you wish to search in the All Metal mode on a saltwater beach a better method to ground balance is to start with the sensitivity in Auto and select the Track position Begin detecting as per normal and after you have covered about 10m of ground switch into the Fixed position If the detector remains stable you can switch out of Auto sensitivity and select a manual setting This method will ensure maximum stability and depth on most beaches If the All Metal mode is too erratic then switch to Disc with Iron Mask On and the Disc amp Notch both on minimum 7 8 3
29. ity to the pull tab will be ignored Pass the coil over the aluminium foil and the Sovereign GT will produce a signal This would not be possible using the Disc control n Turn the Disc control to ignore the aluminium foil The Sovereign GT is now set to ignore the types of objects most commonly unwanted by treasure hunters p26 10 treasure hunting tips 4M 10 Treasure Hunting Tips The Sovereign GT will perform at its best when its Tornado coil is kept in close proximity to the ground Inexperienced operators should practice maintaining a constant coil height at the extremity of each swing maintaining contact with the ground will make this easier This is important as variation in coil height at the end of each swing can cause confusing sounds and will reduce detection depth NOTE Each sweep of the coil should overlap the last one This will ensure good ground coverage Keeping the Tornado coil in contact with the ground will increase detection depth and improve the audio response to small objects www minelab com SOVEREIGN CORRECT ni gt Zt A INCORRECT P0265 A Figure 18 Sweeping the coil 10 1 Pinpointing the Target When the approximate location of the target has been determined move the coil slowly over the target The audio signal will increase in volume while moving towards the target and decrease in vol
30. l produce different signal tones Objects with high conductivity such as those of silver or copper will produce a high pitched signal tone while objects with lower conductivity such as aluminium foil will produce a low pitched signal tone With experience it will be possible to use the signal pitch from an object to accurately determine the type of object discovered before recovering it from the ground i Turn the Disc control progressively clockwise in small steps and pass the coil over the objects Take note of when certain objects are rejected this will enable more accurate discrimination of these objects in the field j Turn the Disc control to the position where it ignores the pull tab Passing the coil over objects with lower conductivity such as the aluminium foil will not produce a signal Take note of the threshold tone as it disappears then returns again It should return at a slightly different pitch than normal This indicates that the Sovereign GT ignored a non ferrous object k Turn the Disc control back to the most anti clockwise position I Progressively turn the Notch control in a clockwise direction again passing the coil over the test objects The Notch control enables the detector to ignore a small number of objects with similar conductivity while still detecting other valuable non ferrous objects even if they are of lower conductivity m Turn the Notch control to ignore the pull tab Objects with similar conductiv
31. le the coil of the detector is designed to be waterproof the control box is quite susceptible to water intrusion Always protect it when using the detector in rain or on the beach where salt spray is prevalent Using the accessory hipmount bag to protect the control box will assist this in most weather Never allow the box to come into contact with gasoline or other oil based liquids Keep the detector clean and dry and avoid getting sand and grit into the shafts or the tightening nuts Do not use solvents to clean the detector use a damp cloth with mild soap detergent Flat or faulty batteries cause many problems with detectors Ensure that only quality alkaline batteries are used and that they are replaced when the low battery warning signal is heard through the headphones or speaker Ensure that the coil cable is in good condition and not subject to undue stress Do not undo or loosen the coil connector at the base of the cable where it enters the coil This should always be firmly tight p29 MINELAB SOVEREIGN Fault 13 troubleshooting www minelab com Solution No Sound Check batteries and battery connections Check headphones and their connection Erratic Noises Check battery charge and battery connections Ensure coil connector is tightened firmly Reduce the Sensitivity by turning clockwise or return to the Auto position Switch Noise Cancel switch to other Band
32. leeveless Jacket Blue Minelab Polo Shirt Blue Minelab Cap For further information on these and other Minelab products call your nearest Authorised Minelab dealer p6 5 assembling the detector AM www minelab com SOVEREIGN 5 Assembling the Detector Please follow these instructions to assemble the Sovereign GT Refer to the drawings to identify parts and how they are positioned Please contact your Minelab dealer for further instructions should any difficulties arise 5 1 Lower Shaft Assembly a Remove the tape on the lower fiberglass tube 3 that is holding the black teardrop washers 12 in place Note Ensure the washers do not fall out after removing the tape b Remove the black nylon wing nut 11 and bolt 10 from the coil 1 c With the teardrop washers in place push the lower tube 3 into the coil bracket so that the holes line up Note Ensure that the black nylon spring clip near the top of the fibreglass tube is pointing toward the rear of the coil d Push the black nylon bolt 10 through the holes in the bracket on the coil from the cable entry side and tighten Figure 1 The coil and the wing nut 11 by hand lower shaft assembly 5 2 Armrest Upper Straight Shaft Assembly Note In some countries the Sovereign GT is issued with an S bend upper shaft and in other countries it will have a straight shaft a Slide the handle 5 onto the upper end of the upper shaft 4 and push i
33. nificantly reduces physical strain enabling longer search time without undue fatigue A hipmount bag is available as an accessory item for this purpose a Check that there are charged batteries in the control box b Place the control box into the hipmount bag with its control panel facing outwards see figure 6 c Place the hipmount bag in your preferred working configuration The hipmount bag can be worn on a waist belt or over the shoulder Note If mounting the hipmount bag on the chest a belt can be threaded through the belt loop and around your chest to hold the bag in position d Wind enough cable from around the shaft so that it reaches across to the control box and allows enough freedom for a full sweep of the coil Note Leave enough slack at the bottom of the cable near the coil to adjust the coil position without straining the coil cable e Use Velcro tabs to secure the cable in position at the base of the shaft and where the cable leaves the shaft f Take the excess loose coil cable and wind it through the belt bracket of the hipmount bag prior to connecting onto the control box see figure 7 Figure 6 Hipmounting the control box Figure 7 Hipmounting the control box HIPMOUNT BAG TO COIL WRAP CABLE AROUND BELT LOOP CONNECTOR g Connect the coil connector 14 to the socket on the rear of the control box and tighten the locking nut p
34. of the target ID tones produced by the Sovereign GT detector and connects between the search coil and the control box without requiring any modification to the detector s electronics Note The meter has no negative effect upon the operation or overall performance of the detector it simply provides easier target recognition It is also very useful for people with poor hearing 8 1 Installation of Meter a Plug the coil connector 14 into the socket 19 on rear of the meter box 19 winding the excess cable around the shaft as close to the meter and away from the coil as possible b Plug the meter cable connector 20 into the control box 2 plug winding the excess cable around the upper shaft 4 see figure 17 c If hipmounting the control box secure the meter cable to the shaft of the detector using the Velcro straps provided d Loop the meter cable twice through the belt loop of the hipmount bag before connecting it to the control box This reduces any stresses placed on the meter cable caused by hipmounting and reduces the possibility of failure of the cable The meter requires no batteries Figure 17 Installing the meter p23 MINELAB SOVEREIGN www minelab com 8 2 Calibration of Meter Before using the Digital Target Meter it is necessary to calibrate it as follows a Set the Calibration control knob situated to the rear of the meter to the center position of its range b Place th
35. osed f Place the base of the battery pack at the rear of the battery compartment A Push the front edge of the battery pack firmly into position B The two battery clips will click into position to securely hold your battery Figure 9 Installing pack in place see figure 8 Alkaline Batteries Caution Good quality alkaline batteries will power the Sovereign GT for about 10 to 15 hours Using headphones will extend battery life further Good quality alkaline batteries should always be used instead of standard carbon batteries Alkaline batteries should be removed from the detector if it is to be stored for extended periods to avoid damage caused by leaking batteries p10 MINELAB www minelab com SOVEREIGN 6 3 Low Battery Warning and NiMH Recharging When the batteries are reaching the point at which they will no longer power the detector properly the Sovereign GT will emit a distinct sharp pip from the speaker approximately every 30 seconds Shortly after this the threshold will increase to a loud continuous signal that cannot be reduced by the threshold control When this tone is heard it is recommended that the NiMH battery pack be recharged or alkaline batteries be replaced The NiMH battery pack can be recharged using either the mains powered charger or a 12V charger that can be plugged into the cigarette lighter of your vehicle both available as accessories Caution Check the mains char
36. robe can assist in locating the find exactly and minimize soil disturbance If you cannot see the target but are confident it is still in the hole remove some soil and place it on a plastic sheet next to the hole This will enable you to pour back the dirt and leave the surrounding area clean after taking out your find Place the coil flat on the ground next to you and gradually remove handfuls of soil from the plastic sheet and pass these over the coil Keep repeating this procedure until you hear and recover your target Be sure to recheck the hole and surrounding soil as several coins can sometimes be found in one hole Pour back the loose soil and carefully tread the sod down to its original appearance This will maintain the pristine nature of your site and help to ensure future access for everyone enjoying this great pastime Please note Dig carefully so as not to gouge or scratch the target which may be valuable or unique Be sure to remove any rings or watches from your hands before passing soil across the coil You may get conflicting signal responses from metal items on or close to you Once again always remember to refill holes 11 Environmental Concerns Firstly it should be pointed out that treasure hunting with a metal detector is the most environmentally friendly way to recover coins rings and other treasure items However it is important to leave an area searched in the same condition you found it When searching p
37. rous and non ferrous objects In this mode the Disc and Notch controls will have no effect and the Sovereign GT will respond in the same way to all types of metal All Metal mode should be used in conjunction with Fixed amp Tracking ground balance especially when searching for gold nuggets or other targets in mineralised soils It is also the required setting when searching for ferrous targets such as relics In Disc mode the Disc and Notch controls become active and can be used in combination to ignore various unwanted metal objects Metal objects fall into two broad categories ferrous and non ferrous A magnet can be used to determine if an object is a ferrous or non ferrous metal ferrous metals are attracted to a magnet while non ferrous are not Note All Metal mode is also the pinpointing mode To pinpoint if you have been detecting in Disc switch up to All Metal and have the ground balance switch in Pinpoint see 7 8 3 pinpointing In Disc mode the detector will null or cancel target signals made from unwanted metals The degree of discrimination is set by using the Disc and Notch control knobs When the Disc All Metal Switch is in Disc position and with Disc and Notch control at minimum the Sovereign GT will cancel all ferrous metals and signal on all non ferrous targets As the Disc control is increased turned clockwise some non ferrous metals will be cancelled and as the control is increased further more non ferrous metals
38. rs is that the tone of the threshold will also change After the target signal is heard the threshold hum will return in a pitch similar to the pitch of the signal When the target signal is nulled due to discrimination or notching the threshold will again return in the higher or lower pitch of the target conductivity For example if you are searching in the Discriminate mode and you have just detected a coin the threshold will remain at the tone of the coin signal but when you pass over a junk target such as a nail the Audio will NULL go silent over the nail and the threshold when it returns will drop to a lower tone This can be a useful feature as unlike other detectors using Silent Search discrimination modes you still ignore the junk targets but you know when you have passed over them and can estimate the conductivity that they have see 7 6 Discrimination amp Notch descriptions The other advantage of the threshold based Discriminate mode is that on occasions the only thing that may alert you to the presence of a very deep target is a change in threshold pitch This is a common occurrence in very junky sites or if you are sweeping faster than normal However for new users of BBS technology this may initially be a little confusing so to simplify things a little Minelab have added a Silent Search discriminate mode option to the Sovereign GT In this mode targets will still produce different tones based on conductivity b
39. rt settings that you can use Quick Operating Instructions Disc Mode a Install charged batteries b Set the Mode switch to Disc Iron Mask OFF c Set the Ground Balance switch to Pinpoint d Turn the Sovereign GT On by turning the Volume control to approximately 3 o clock e Set the Threshold Silent search switch to Threshold f Turn the Threshold control in a clockwise direction until the tone becomes just audible g Set the Sensitivity control to Auto h Set the Disc control to the 3rd dot i Set the Notch control to zero until you better understand its appropriate settings j You can now start searching p12 7 contro panel AN www minelab com SOVEREIGN All Metals Mode a Install charged battery pack b Set the Mode switch to All Metals c Turn the Sovereign GT On by turning the Volume control to about 3 o clock d Turn the Threshold control in a clockwise direction until the tone becomes just audible e Set the Sensitivity control to Auto f Put the Ground Balance switch into Track and ground balance the detector by raising and lowering the coil from 2 15cm above the ground until the threshold becomes stable Note Disc and Notch controls are disabled when the detector is in the All Metal mode Once you are familiar with all of the controls you will gain greater performance and versatility by setting the controls to suit the needs of the area being detected Off
40. sn t changed to a different tone assuming the threshold switch is selected it may in fact be a very deep target on the edge of the detection depth Digging down an inch or two will get the coil closer and will enable it to be identified p16 MINELAB www minelab com SOVEREIGN 7 5 1 Iron Mask On Off A fundamental problem for most conventional detectors is the inability to recognize a valuable target when it is located near a ferrous item This is a particular problem in areas heavily littered with trash which is common on old relic sites The Sovereign GT using Iron Mask On is particularly good at making the distinction between a non ferrous target and iron trash recognizing the non ferrous target and providing an audio signal With Iron Mask On the search depth is also a little greater and non ferrous targets may be located more reliably amongst ferrous trash However with Iron Mask On the detector may give the occasional beep on large ferrous targets and the threshold may not be quite as stable For this reason beginners may prefer to detect with Iron Mask Off Also when discriminating in mineralised soil Iron Mask Off may be the preferred mode n Disc T 6 Discrimination Control The Disc Discriminate control is located at the top left hand side of the control panel and is used when in Disc Mode to discriminate or ignore unwanted non ferrous metal targets If the Disc control is set to the most
41. t on about a foot b Place the two arm rest halves 6 on either side of the upper Figure 2 Armrest upper shaft 4 and ensure that the bolt holes are aligned shaft assembly c Slide the nylon bolts 10 through the bolt holes and screw the nylon wing nuts 11 onto the bolts 8 with a couple of turns do not tighten d Slide the plastic control box bracket 9 into the runners of the arm rest 6 amp tighten the v i wing nuts by hand e Attach the arm rest straps 8 using the press studs on both sides of the arm rest f Push the arm rest straps through the slots in the arm rest cover 7 and push the cover over the arm rest g Position your arm into the arm rest and slide the handle 5 along the shaft into a comfortable position Tighten the two screws in the base of the handle with a small screwdriver If your detector is supplied with the S bend shaft assembly will be identical except that you will not have to assemble the separate handle p7 MINELAB SOVEREIGN www minelab com 5 3 Completing the Shaft Assembly a Slide the lower shaft assembly 3 into the Aluminium upper shaft 4 Note The black plastic locking nut 13 may need to be loosened to position the lower shaft assembly correctly b Set the length of the shaft by locking the black nylon spring clip into one of the holes provided then tighten the plastic locking nut by hand Figure 4 Completing the
42. to ignore both foil and pull tabs will also ignore a large amount of valuable non ferrous objects including some coins rings and other jewellery which have conductivity levels between these junk items Example If hunting for thin rings of white gold with the Disc control set to position 4 see figure 14 some types of aluminium foil will also be detected To avoid old pull tabs but detect brass buttons and copper coins the Disc control would need be set higher approximately at number 13 At this setting most fine white gold rings foil and some yellow gold rings will also be ignored With experience setting the Disc control to ignore most unwanted targets in combination with the Notch control will become second nature and you will develop a preferred setting for different sites Small iron bolts Silver copper Figure 14 Disc control nails etc brass lead REJECTED ACCEPTED p18 MINELAB www minelab com SOVEREIGN 7 7 Notch Variable Control e x w Located on the centre left of the control panel the Notch control is used in combination with the Disc control to discriminate against or ignore certain metal objects As with the Disc E m Control this is continuously variable and features numerous graduations as a guide to Notch setting the control The main difference between the Notch and Discrimination controls is that Discrimination sets a continuous band of discrimination
43. tomatic ground balance means that the Sovereign GT can be used for gold prospecting or relic hunting in mineralised soils as well as coin amp treasure hunting in parks fields or the beach Track position continuously analyses the ground and resets the ground balance to compensate for changes in the mineral content This position is ideal for areas where the ground mineralization is changing rapidly Fixed position holds the ground balance at the last setting found while in Tracking and is suited to areas where the ground mineralisation is more constant Fixed position will often give slightly more depth than Track Tip If the Track Mode is unsuccessful at ground balancing in heavily mineralized ground the operator should reduce the sensitivity setting and slow down the sweep speed Note In most ground the Sovereign GT will ground balance to a slightly positive level audio level rises when the coil is lowered to the ground This is to ensure maximum depth and will help to reduce signals from large hotrocks close to the surface p20 MINELAB www minelab com SOVEREIGN 7 8 1 To ground balance in mineralized soils When in the All Metal mode place the switch into Track and raise and lower the coil between 2 15cm above the ground As the detector compensates for the ground minerals that are present the threshold will begin to stabilize producing the same steady tone as you raise and lower the coil Depending on the mineral
44. ume as the coil is passed away from it The signal will be loudest when the coil is directly over the target Quite often the detector will be producing its maximum volume for a broad area over the target This generally indicates that the target is near the surface or is quite large To receive a sharper more precise signal over the target it may also be beneficial to switch to the All Metals and Pinpoint modes as this will produce a narrow response to the target see p 21 The open design of the Tornado coil makes it easy to mark the ground directly above the target to aid recovery TARGET COULD BE ANYWHERE IN THIS AREA SWEEP DIRECTION 9 Figure 19 i a Pnponting the target a LOCATION OF TARGET EXACT ds A vi SWEEP COIL AT 90 DEG TO PREVIOUS SWEEP p27 AW 10 treasure hunting tips SOVEREIGN www minelab com 11 2 Recovering the Object Once the target has been pinpointed clear the surface of loose material twigs leaves etc and check again for the signal If there is no signal then the target is amongst the surface material In this case search the surface material until the target is located If the target is still in the ground recheck using the pinpoint mode For lawned areas cut a grass plug in a horse shoe shape leaving one corner attached then bend the sod back If you have pinpointed properly your find should be in the middle of the exposed hole If not the use of a p
45. ut you will not hear the changes in threshold tone or the Nulling of discriminated objects A slightly faster sweep speed is also possible which makes the Silent Search mode ideal in areas of low target concentrations such as the beach where ground coverage is just as important as recovering the really deep targets If a rich pocket or area is located the operator can select the Threshold mode and slow down their sweep to ensure all targets are recovered To operate in Silent Search mode you need to start with the switch in Threshold position and using the Threshold control lower the level until it is just audible as you would if you were searching with Threshold Once you have this level of threshold flick the switch to Silent Search The threshold will now disappear but a faint target signal will still sound NOTE If you were to have the threshold level set too low before going into Silent Search you could find that the very soft target signals may not be audible If your threshold level is too loud before switching into silent search the threshold will become softer but still audible p15 MINELAB SOVEREIGN www minelab com All Metal 7 5 Disc All Metal Switch x Disc yon This switch is located in the top centre of the control panel and is used to Y or select All Metal or Disc Discriminate with Iron Mask or Disc without Iron Mask mode v I Mask bilis In All Metal mode the Sovereign GT will detect both fer
46. whereas the Notch selects a short segment of discrimination which can be moved up or down the scale of conductivity Note The Notch control will only be active if set to a higher or more clockwise level than the Disc control As the Notch control is turned further clockwise objects with a conductivity within the width of its band will be ignored Turning the Notch control to ignore the pull tab will mean that only non ferrous objects having a similar conductivity to the pull tab will be ignored while all other non ferrous objects of different conductivity are still accepted Note in Figure 15 the ferrous objects are being ignored due to the Disc setting on zero CONDUCTIVITY LOW HIGH CONDUCTIVITY CONDUCTIVITY DISC NOTCH FOIL LOW COINS PULL TABS HIGH COINS COPPER SILVER AND RINGS AND RINGS BRASS and LEAD FERROUS NON FERROUS Figure 15 Ignoring targets using the Notch control When using the Notch and Disc controls in combination most unwanted objects can be successfully ignored see Figure 15 Turning the Notch control to ignore the pull tab and the Disc control to ignore the aluminium foil will set up the Sovereign GT to ignore most pull tabs and aluminium foil while still detecting most valuable non ferrous objects see figure 16 Note Different pull tabs may require a slight movement of the Notch setting Obviously if the amount of pull tabs is not numerous then you may decide to leave the notch at
47. will be cancelled In addition when in Disc mode the target signals from non ferrous objects will vary in tone depending upon their level of conductivity Effectively this allows general identification of the type of object detected before recovering it from the ground For example a US quarter or Australian 1 coin will produce a high pitch signal whereas aluminium foil will produce a low pitched signal Pull tabs rings and other coins will produce various intermediate tones depending upon the object s conductivity The higher an object s conductivity the higher the signal tone will be Also provided the Threshold Silent search switch is in the Threshold position when the Sovereign GT rejects a ferrous or a non ferrous object the background threshold tone will momentarily disappear then return again at a pitch similar to the ignored signal A ferrous object will cause the returning threshold pitch to be much lower than normal while a pull tab that is being ignored will cause it to be higher than normal If the Sovereign GT produces a high pitched rapidly pulsing sound the detector is being overloaded by a substantially large piece of metal close to the coil Raise the coil a few inches above the ground and pass it over the area again to check the target By lifting the coil away from the ground it enables the Sovereign GT to accurately analyse the object detected Note If a target signal seems to have blanked but the threshold ha
48. www minelab com SOVEREIGN Target Recognition Table Object Type Reading US quarter non ferrous 170 AUS 20c non ferrous 165 4NF 9 practising the controls 9 Practising the Controls Take some time to become familiar with how the Sovereign GT responds to various metal objects a Gather a collection of different metal objects such as a rusted nail pull tab brass button aluminium foil various coins and some gold and silver jewellery b Take the detector outside away from known electromagnetic devices or metal objects Lay the various objects out on an area of ground known to be void of other metal objects c Switch the Sovereign GT On and select Disc Mode d Turn the Disc and Notch controls to their most anti clockwise positions e Turn the Sensitivity control to maximum the most anti clockwise position without clicking into Auto If excessive interference is heard turn the Sensitivity control clockwise until the threshold tone is stable f Pass the coil across the test objects one at a time The Sovereign GT should beep on the non ferrous objects and ignore the ferrous objects g Take note that as the coil passes over the ferrous nail the threshold tone disappears As the threshold returns it will have a lower than normal pitch indicating that the object ignored was ferrous h Passing the coil over different non ferrous objects wil
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