User manual MINELAB SOVEREIGN GT

[. . . ] MINELAB S O V E R E I G N GT 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 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: +353-23 52101 www. minelab. com MINELAB User Manual © 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' & `BBS' are all trademarks of Minelab Pty Ltd. [. . . ] In All Metal mode the Sovereign GT will detect both ferrous 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 & 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. 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. 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). 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 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. [. . . ] 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. [. . . ]