Minelab GP Extreme User manual

Minelab USA Inc
871 Grier Drive, Suite B1,
Las Vegas, Nevada, 89119
United States of America
Telephone: [phone]
Facsimile: [phone]
Email [email protected]

THE MINELAB ‘GP extreme’
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Minelab‘GPextreme’
4901-0036 Version 0.1

4901-0036-Revision 1.2

THE MINELAB ‘GP extreme’
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www.minelab.com
©Minelab Electronics Pty Ltd
Thisdocumentcontainsproprietaryinformationwhichisprotectedby
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.
WARNING. This document contains Minelab Electronics Pty Ltd
rights, technical data or restricted rights data, or both. Patents and
trademarksapply.
THE MINELAB ‘GP extreme’
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TABLE OF CONTENTS
INTRODUCTION ................................................................................................................... 1
Aboutthismanual ..................................................................................................................................... 2
IntroducingtheMinelab‘GPextreme’ ..................................................................................................... 3
ASSEMBLY............................................................................................................................ 5
Unpacking your ‘GP extreme’[easy reference] ..................................................................................... 6
List ofpre-assembledsectionsandparts................................................................................................. 7
Complete assembly instructions.............................................................................................................. 8
BATTERY ............................................................................................................................. 13
Batteryandcharging ..............................................................................................................................14
CONTROLS.......................................................................................................................... 17
Detectorsounds[easyreference]..........................................................................................................18
Controlfunctions:rearpanel .................................................................................................................. 19
Controlfunctions:frontpanel..................................................................................................................23
OPERATION......................................................................................................................... 27
Quickstart instructions[easyreference]...............................................................................................28
Detailedoperating instructions................................................................................................................ 29
Groundbalancing ...................................................................................................................................33
Irondiscrimination ..................................................................................................................................35
Level Ajust Control................................................................................................................................. 37
contents
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4
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TABLE OF CONTENTS
contents
6DETECTING TECHNIQUES ............................................................................................... 39
Detectingtechniques...............................................................................................................................40
Prospecting techniques .......................................................................................................................... 42
Identifying targetsignals ......................................................................................................................... 43
Recovering thetarget ............................................................................................................................. 45
USER INFORMATION ........................................................................................................ 49
Technical specifications forthe Minelab‘GP extreme’ .......................................................................... 50
Troubleshooting ....................................................................................................................................... 51
Service repair form.................................................................................................................................52
Warranty ................................................................................................................................................. 53
Accessories ............................................................................................................................................54
Glossary of common terms ................................................................................................................... 55
Detector careand safety ........................................................................................................................ 59
An important message from Minelab ..................................................................................................... 60
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THE MINELAB ‘GP extreme’
INTRODUCTION
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1
Introduction
The ‘GP extreme’ incorporates new
technological advances and control
functions which have resulted in a
detector that combines stable and
effective ground balancing with
‘extreme’ depth and ‘extreme’
sensitivity.

THE MINELAB ‘GP extreme’
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INTRODUCTION
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ABOUT THIS MANUAL
This manual is designed to introduce the detector’s features. It gives you step-by-step
directions for everything from assembling and adjusting your detector, to basic and
advanced detector use.
1. INTRODUCTION
Basic overview of the ‘GP extreme’
and this User’s Manual.
2. ASSEMBLY
This chapter provides details and
instructions on assembling and
adjusting the ‘GP extreme’.
3. BATTERY
The ‘GP extreme’ is powered by a
rechargeable battery pack. This
chapter provides details on battery
installation, use and performance.
4. CONTROLS
This chapter is designed to
familiarize you with the various
features of the ‘GPextreme’ control
panel. A few minutes spent reading
this chapter will be a worthwhile
preliminary to basic or advanced
detecting.
5. DETECTOR OPERATION
However experienced you are at
using a metal detector, it is important
that you read this.
6. DETECTOR TECHNIQUES
Once you are comfortable with the
basic detector use, there are a few
techniques you should be aware of.
7. USER INFORMATION
This chapter provides a glossary of
terminology, user guides, technical
specifications, warranty and repair
details and troubleshooting tips.
ABOUT THIS MANUAL

THE MINELAB ‘GP extreme’
INTRODUCTION
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Minelab ‘GP extreme’ is the first detector to use ‘Dual Voltage
Technology’ (DVT).
Minelab have developed this new Dual Voltage Technology
(DVT) based on the Bi-Polar technology used in our military
detector range.
The New Features
The new features of the ‘GP extreme’ are
• new DVT technology giving greater depth than ever before
• selectable Tx (transmit) modes for different Soil conditions
• selectable Rx (receive) modes for increased sensitivity and
less susceptibility to interference
• adjustable Signal response for target tone variation
• volume limiting for users own preference
• and new ‘GP extreme’ 1100 and ‘GP extreme’ 1800 coils
which have been specially designed to take advantage of the
new DVT.
Minelab are confident that you will find the ‘GP extreme’ to be the
ultimate detector for finding metallic objects in highly mineralised
and/ or salty environments. Simple operation means that both the
beginner and professional will find this detector very easy to use.
Old gold fields, where mineralised ground and too much rubbish
have shielded many nuggets from the ‘prying eyes’ of other
detector operators, will likely yield new finds.
Minelab thanks you for purchasing this ‘GP extreme’
detector and wish you every success in your quest for gold
and treasure.
INTRODUCING THE MINELAB ‘GP extreme’
INTRODUCING THE MINELAB ‘GP EXTREME’
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ASSEMBLY
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Assembly
This chapter provides details and
instructions on assembling and
adjusting the ‘GP extreme’.
THE MINELAB ‘GP extreme’
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INTRODUCTION
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Minelab is always interested in your opinions so if you have any questions or comments
regarding the ‘GPextreme’ or any other Minelab product, please feel free to contact us via your
local Authorized Minelab dealer, or write to us:
Minelab International Limited
Laragh, Bandon
Co. Cork
IRELAND
email: [email protected]
tel: + 353 (23) 52101
Contact Minelab
Minelab Electronics Pty Ltd
PO Box 537 Torrensville Plaza
South Australia 5031
AUSTRALIA
email: [email protected]
tel: + 61 (8) 8238 0888
Visit our site on the World Wide Web: http://www.minelab.com for the latest information
on Minelab products and services.
Minelab USA
2700 E Patrick Lane, Suite 11
Las Vegas, Nevada 89120
UNITED STATES OF AMERICA
email: [e-mail]
tel: + 1 [phone]

Minelab USA Inc
871 Grier Drive, Suite B1,
Las Vegas, Nevada, 89119
UNITED STATES OF AMERICA
email: [email protected]
tel: [phone]

THE MINELAB ‘GP extreme’
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ASSEMBLY
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UNPACKING YOUR ‘GP Extreme’
A. ‘GPextreme’1100 Coil with Skid Plateand
FibreglassLowerShaftattached.
B. IntermediateShaft.
C. ‘GP extreme’ControlBoxwithUpper
Shaft,Handle,ArmRest,ArmStrapsand
NeopreneArmrestCoverattached.
D. Headphones.
E. BatteryandBatteryPack.
F. Velcro Straps, Knuckle and Bungy Cord.
G. Battery Cable.
H. Vehicle Charger.
I. MainsCharger.
J. Backpack Strap.
K. Instruction Manual, Field Guide and RubbishBag.
L. Hard Carry Case.
M. ‘GPextreme’ 1800 coilwithskidplate (in separate
carton).
The ‘GP extreme’ as shipped Figure 2.1 Contents of the ‘GP extreme’ pack
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easy reference
UNPACKINGYOUR‘GP extreme’
THE MINELAB ‘GP extreme’
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LIST OF PRE-ASSEMBLED SECTIONS AND PARTS
PRE-ASSEMBLED SECTIONS
Figure 2.2 Pre-assembled sections and parts list
A. Lower Shaft Assembly
1. Extreme 1100Coil
2. CoilCable
3. SkidPlate
4. FibreglassLowerShaft
5. Nylon Nut & Bolt
6. Teardrop Washers
B. Intermediate Shaft Assembly
7. IntermediateShaft
C. Upper Shaft Assembly
8. UpperShaft
9. HandlewithWristStrap
10. Control Box
11. ArmrestParts(2)
12. Nylon Bolt (2)
13. Nylon Nut (2)
14. Arm Straps(2)
15. Armrest Cover
D. Headphones
16. Headphones
E. Battery and Battery Pack
17.Battery
18. BatteryPack
19.Battery PowerCable
F. Extras
20. Velcro Cable Straps (3)
21.Bungy Cord
22. Bungy Knuckle
A.
B
C
D
E
F
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Inventory
Whenunpacking your ‘GP extreme’, you will find that a number of
thecomponentshavebeenpre-assembledforyourconvenience.
Figure 2.1 (page 6) shows a list of the parts as they are packed.
Figure 2.2 (page 7) shows the pre-assembled sections and a list
ofparts.
Should you need to assemble the ‘GP extreme’ from
all the various components, here are detailed
assembly instructions.
Assembling and fitting the armrest
Figure 2.3, refer also Figure 2.2
STEP 1 Place the two armrest halves (11) on either side of the upper
shaft(8)andensurethattheboltholesarealigned.
STEP 2 Slidethetwonylonbolts(12)throughthe boltholesand
screw the nylon wing nuts (13) onto the bolts by a couple of
turns.
STEP 3 Slidethe ‘T’ section on top of thecontrol box (10) into the
armrestwiththebatteryplugattherear. Tightenthenylon
wingnutsbyhand.
STEP 4 Attachthearmreststraps(14)usingthepressstudsonboth
sidesof thearmrest.
STEP 5 Push the arm rest straps(14) through the slots in the
neoprene arm rest cover (15) and then push the cover over
the arm rest (11).
COMPLETEASSEMBLYINSTRUCTIONS
COMPLETE ASSEMBLY INSTRUCTIONS
Figure 2.3 Armrest assembly
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COMPLETE ASSEMBLY INSTRUCTIONS
Attaching the handle and bungy cord
Figure 2.4, refer also Figure 2.2
STEP 1 Slidethehandle(9)ontotheotherendoftheuppershaft(8)
and set it to a comfortableposition. Tightenthetwo screwsin
the baseof the handle witha small flattipped screwdriver to
holdthe handle in position.
STEP 2 Slide the bungy cord knuckle (22) of the bungy cord onto the
uppershaft(8).
Assembling the Intermediate and Upper shaft sections
Figure 2.5, refer also Figure 2.2
STEP 1 Slidetheintermediateshaft(7)intotheendoftheupper shaft
(8) and snap into place.
STEP 2 Checkthat the coil (1) has a skid plate (3)attached.
STEP 3 Check thatthecoilpivot end of the lower fibreglassshaft (4)
hastwoteardropwashers(5)installed.
NOTE The washers should always be full thickness
and should be replaced regularly as they wear out and
allow the coil to become loose.
STEP 4 Pushthelowerfibreglassshaft(4)intothemountingbrackets
on the coil and ensure that the spring clip at the rear of the
fibreglassshaftfacesthe rear of the coil.
Attaching the coil
Figure 2.5
STEP 1 Line up theholes in the coil with thepivot endof the
fibreglassshaft(4).
STEP 2 Push thenylon boltthrough the holes and fitthenylon wing
nutthentightenbyhand.
NOTE Do not over tighten the nut as the coil housing
may be crushed or damaged.
Figure 2.4 Handle and bungy cord
Figure 2.5 The coil pivot end of the lower
fibreglass shaft
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COMPLETE ASSEMBLY INSTRUCTIONS
Securing and connecting the coil cable
NOTE Always ensure that the control box is turned off
completely before connecting or disconnecting the coil.
STEP 1 Wind the coil cable around the shaftandplugthecoil
connector into thecoilsocket on thecontrolbox.Check that
thecableiswoundfirmlyaroundtheshaftwithoutstrain,
leave enoughslack atthe bottom of thecable near the coilto
allowfor adjusting the angle ofthe coil withoutplacing strain
on the coilcable.
STEP 2 Fasten the cable into positionusing theVelcro straps
provided (20).
Fitting and connecting the battery pack
Figure 2.6
STEP 1 Fitthebattery(17)intothebackpackpouch(18).
STEP 2 Connecttheheadphones(16)and the powercable(19)to
theappropriatesocketsinthecapofthebattery.
STEP 3 Put on the back pack (18).
If the coil cable is able to move
around, especially near the coil, it
will be ‘seen’ by the detector and
cause random noises which may be
confusing.
HINT
Use only the 6v DC battery supplied
CAUTION
Attaching the lower fibreglass shaft
Figure 2.2
STEP 1 Slidethelowerfibreglassshaft(4)intotheintermediateshaft(7).
STEP 2 Adjust shaftlengthand coilangleforacomfortableposition.
Minelab recommends that the shaft lengthbe setto give a
comfortablesweeplengthofapproximately2meters. The
lowerfibreglass shaft can beset into position bylocatingthe
spring clip into the holes provided in theintermediate shaft
and handtightening the locking nut at the endof the
intermediateshaft.
THE MINELAB ‘GP extreme’
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COMPLETE ASSEMBLY INSTRUCTIONS
STEP 4 Ensure that the power switch onthecontrol box is switched
offandplugtheconnectoronthepowercable(19)intothe
batteryconnectorplugonthecontrolbox.Thiscable
connectsthebatteryandheadphonestothedetector.
Adjust for your own comfort
STEP 1 Adjust the bungy cord (21) from the knuckle (22) on the shaft
to correctlength to take some of theweightwhen
prospecting.
STEP 2 Adjustthe handstraponthehandle(9)foryourowncomfort.
Figure 2.6 The ‘GP extreme’ battery assembly
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THE MINELAB ‘GP extreme’
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BATTERIES
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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.