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Summary of Contents for Minelab GP Extreme
- Page 1 Minelab USA Inc 871 Grier Drive, Suite B1, Las Vegas, Nevada, 89119 United States of America Telephone: +1 (702) 891 8809 Facsimile: +1 (702) 891 8810 Email info@minelabusa.com...
- Page 2 THE MINELAB ‘GP extreme’ Minelab ‘GP extreme’ 4901-0036-Revision 1.2 4901-0036 Version 0.1...
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Page 3: Table Of Contents
Apart from any use as permitted under the Copyright Act Introducing the Minelab ‘GP extreme’ ..................... 3 1968, no part may be reproduced by any process without written permission from Minelab Electronics Pty Ltd, 118 Hayward Avenue, Torrensville, SA 5031, Australia. ASSEMBLY..........................5 Unpacking your ‘GP extreme’... -
Page 4: Introduction
Identifying target signals ......................... 43 Recovering the target ..........................45 Introduction USER INFORMATION ......................49 Technical specifications for the Minelab ‘GP extreme’ ................50 Troubleshooting ............................51 The ‘GP extreme’ incorporates new Service repair form ..........................52 Warranty ..............................53 technological advances and control Accessories ............................ -
Page 5: About This Manual
DVT. The ‘GP extreme’ is powered by a 7. USER INFORMATION Minelab are confident that you will find the ‘GP extreme’ to be the rechargeable battery pack. This This chapter provides a glossary of ultimate detector for finding metallic objects in highly mineralised... -
Page 6: Assembly
Minelab is always interested in your opinions so if you have any questions or comments regarding the ‘GP extreme’ or any other Minelab product, please feel free to contact us via your local Authorized Minelab dealer, or write to us:... -
Page 7: List Of Pre-Assembled Sections And Parts
P0501-A The ‘GP extreme’ as shipped Figure 2.1 Contents of the ‘GP extreme’ pack P0502-B A. ‘GP extreme’ 1100 Coil with Skid Plate and G. Battery Cable. D. Headphones A. Lower Shaft Assembly C. Upper Shaft Assembly Fibreglass Lower Shaft attached. -
Page 8: Complete Assembly Instructions
Tighten the two screws in Inventory the base of the handle with a small flat tipped screwdriver to When unpacking your ‘GP extreme’, you will find that a number of hold the handle in position. the components have been pre-assembled for your convenience. - Page 9 STEP 2 Adjust shaft length and coil angle for a comfortable position. Minelab recommends that the shaft length be set to give a comfortable sweep length of approximately 2 meters. The lower fibreglass shaft can be set into position by locating the...
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Page 10: Battery
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Battery The ‘GP extreme’ is supplied with a 6v DC rechargable battery pack plus both mains and vehicle chargers. This chapter provides details on battery installation, use and performance. -
Page 11: Battery And Charging
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Mains Battery Charger BATTERY AND CHARGING The mains battery charger will charge the battery from local mains (AC) power outlets. The Battery STEP 1 Connect the mains charger to a mains outlet. -
Page 12: Controls
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Controls It is important to familiarise yourself with the features of the ‘GP extreme’ control panel. A few minutes spent reading this chapter will be a worthwhile preliminary to detecting. -
Page 13: Detector Sounds [Easy Reference]
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com DETECTOR SOUNDS CONTROL FUNCTIONS There are two control panels: the rear panel and the front panel. easy reference Rear Panel Threshold and Tone Figure 4.1 This is the background sound produced by the detector. The level is set using the Threshold control. - Page 14 THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Boost (Shallow/N/Deep) If the threshold level is set too low there is no audible background signal and small target signals will not go above the threshold of Figure 4.3 audibility (Figure 4.6).
- Page 15 THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Signal Pitch Front Panel Figure 4.12 Figure 4.16 Adjusts the pitch response of the target signal. In Figures 4.13 and 4.14 the curving line represents the high/low P0522-A Audio pitch response to a target. The dotted line represents the threshold tone.
- Page 16 Changes the sensitivity and search pattern of the coil to allow the Level adjust gives the user the ability to select the sensitivity ‘GP extreme’ range of coils to become multi-versatile coils with P0528-A and likelihood of a target being ferrous or non-ferrous.
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Page 17: Operation
Coils not specifically designed for the ‘GP extreme’ may behave erratically or be ineffective in either E (Enhance) or Cancel modes. Balance (Fixed/Tracking) Figure 4.21 The ‘GP extreme’ may be operated with fixed ground balance or Operation automatic ground balance. P0529-A Balance •... -
Page 18: Quick Start Instructions [Easy Reference]
STEP 1 Turn Power switch On. Take time to read this manual NOTE When the ‘GP extreme’ is turned Off, important thoroughly to obtain the best Set Boost to N (Normal) for general detecting. STEP 2 information (e.g. tuning frequency and ground balance) is... - Page 19 THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Set the Tone control E (Enhance) changes the way the coil transmits and receives its signals. Operating in enhanced, the coil has some of the • Adjust the Tone control until the threshold is at a comfortable tone characteristics of a Monoloop coil.
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Page 20: Ground Balancing
'ground noise'. If ‘Balance’ is changed to ‘Fixed’, The ‘GP extreme’ has the ability to cancel out the effects of ground Boost (Shallow/N/Deep) the detector will no longer adjust mineralisation. This minimises ground noise and retains maximum sensitivity to metal targets. -
Page 21: Iron Discrimination
The fast ground balance takes only 5 sec. after switching to Tracking. Therefore, it is important to be moving the coil as the The ‘GP extreme’ is capable of rejecting many iron objects while still detecting non- ferrous metals. The ability of the detector to discriminate ferrous targets means switch is changed. -
Page 22: Level Ajust Control
Level Adjust gives the user the ability to select the sensitivity and likelihood of a target being discriminated as ferrous when used in Iron discrimination with the ‘GP extreme’ is the silencing or ‘blanking’ the Disc mode. of the threshold which occurs when the detector determines a target is comprised of ferrous metal. -
Page 23: Detecting Techniques
Detect less rubbish, but may mistake a and happy prospecting that will help you cancel a gold nugget. nugget for ferrous rubbish to utilise the power of your ‘GP extreme’ Suggested for areas with large amounts of Suggested for areas with small amounts of ferrous rubbish. -
Page 24: Detecting Techniques
• See also Pinpointing Technique, pages 43 and 44. Motion detection The ‘GP extreme’ is a 'motion' detector. Therefore the detector must be moving over a target to detect it. P0531-A Figure 6.3 Search area from 3 directions Parallel Sweeping Procedure Figure 6.1... -
Page 25: Prospecting Techniques
PROSPECTING TECHNIQUES IDENTIFYING TARGET SIGNALS The ‘GP extreme’ has superior ground balancing and it is possible to find quite large Metallic targets will usually give a 'solid' sounding signal when the coil is swept across objects near the surface in well-worked areas where other detectors have been unable to the object from any direction. -
Page 26: Recovering The Target
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com Pinpointing RECOVERING THE TARGET To find an object, and reduce the size of the hole required to remove it from the ground, it is necessary to pinpoint the exact location of the object. - Page 27 If it is still difficult to find the target, place the detector on the STEP 10 The ‘GP extreme’ will find objects at greater depth in salty ground with the coil horizontal. environments. However, the interfering signals caused by highly...
- Page 28 THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com User Info This chapter provides a glossary of terminology, user guides, technical specifications, warranty and repair details and troubleshooting tips.
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Page 29: Troubleshooting
Set Rx to Cancel. Audiotelex headphones 600 ohm If you need to return your detector to Minelab for service, please supply as many details as possible about Coil (standard) Extreme 1100 (Double D) the fault. This will enable our service engineers to rectify the fault quickly and efficiently. -
Page 30: Service Repair Form
THE MINELAB ‘GP extreme’ THE MINELAB ‘GP extreme’ www.minelab.com WARRANTY SERVICE REPAIR FORM The ‘GP extreme’ control box has a 2 year warranty covering parts Repairs Today’s Date ___________________________________________________________________________ and labour. Refer to your warranty card for details. ______________________________________________________________________________________ In the unfortunate circumstance The ‘GP extreme’... -
Page 31: Accessories
Search coils control box originates the TX (transmit) signals sent by the coil and The ‘GP extreme’ is supplied with the ‘GP extreme’ 1100 and interprets the RX (receive) signals detected by the coil. All user ‘GP extreme’ 1800 coils. These coils have been specially designed selectable functions (knobs &... - Page 32 Non - Ferrous Metals Metals not containing significant levels of iron. Non-ferrous metals are non-magnetic such as Gold, Silver, Copper, Brass, Lead or Tracking The function of Automatic Ground Balance where the ‘GP extreme’ makes continuous adjustments to the ground balance to compensate Aluminium.
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Page 33: Detector Care And Safety
DETECTOR CARE AND SAFETY take care The ‘GP extreme’ is a high quality electronic instrument. It has been designed for professional gold prospecting use and the electronics circuitry is housed in a rugged case. Take care of your detector in the following way: Keep the detector clean and dry. -
Page 34: An Important Message From Minelab
Every prospector and treasure hunter around the world and the staff of Minelab thank you for your continued efforts towards protecting the environment. IMPORTANT MESSAGE FROM MINELAB...
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