Minelab GP 3500 Service Manual Page 1

Minelab USA Inc871 Grier Drive, Suite B1, Las Vegas, Nevada, 89119United States of AmericaTelephone: +1 (702) 891 8809Facsimile: +1 (702) 891 8810Emai

THE MINELAB ‘GP extreme’12ASSEMBLY2www.minelab.comTHE MINELAB ‘GP extreme’13BATTERIES33BatteryThe ‘GP extreme’ is supplied with a 6vDC rechargab

THE MINELAB ‘GP extreme’14BATTERIES3www.minelab.comThe BatteryThe 6v DC rechargeable battery should provide enough power tooperate the detector for

THE MINELAB ‘GP extreme’16BATTERIES3www.minelab.comTHE MINELAB ‘GP extreme’174CONTROLS4ControlsIt is important to familiarise yourself withthe feat

THE MINELAB ‘GP extreme’18CONTROLS4www.minelab.comeasy referenceDETECTOR SOUNDSDETECTOR SOUNDSThreshold and ToneThis is the background sound produced

THE MINELAB ‘GP extreme’20CONTROLS4www.minelab.comCONTROL FUNCTIONSBoost (Shallow/N/Deep)Figure 4.3Enhances the signals produced by different types of

THE MINELAB ‘GP extreme’22CONTROLS4www.minelab.comToneFigure 4.15Adjusts the tone of the threshold. The user may set this to thepreferred tone, e.g. t

THE MINELAB ‘GP extreme’24CONTROLS4www.minelab.comCONTROL FUNCTIONSIron Discriminate (All Metal/Disc)Figure 4.18Selects between discrimination or to t

THE MINELAB ‘GP extreme’26CONTROLS4www.minelab.comCancel will again be to one side of centre and signals maybe complex if target is close to the coil.

THE MINELAB ‘GP extreme’29OPERATION5DETAILED OPERATING INSTRUCTIONSTurn the ‘GP extreme’ On• Hold the coil away from the ground and metal objects a

THE MINELAB ‘GP extreme’30OPERATION5www.minelab.comDETAILED OPERATING INSTRUCTIONSSet the Tone control• Adjust the Tone control until the thresho

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

THE MINELAB ‘GP extreme’32OPERATION5www.minelab.comSometimes it may not be possible to remove the effects ofinterference completely by using the Tu

THE MINELAB ‘GP extreme’34OPERATION5www.minelab.comGROUND BALANCINGGround Balancing ProcedureFigure 5.2• Move the coil up and down between 20mm an

THE MINELAB ‘GP extreme’36OPERATION5www.minelab.comIRON DISCRIMINATIONIron DiscriminateFigures 5.4, 5.5Iron discrimination with the ‘GP extreme’ i

THE MINELAB ‘GP extreme’38OPERATION5www.minelab.comIRON DISCRIMINATIONeasy referenceDISCRIMINATION CONTROL USING LEVEL ADJUSTMIN (FULLY ANTI-CLOCK

THE MINELAB ‘GP extreme’40DETECTING6www.minelab.comSome user tips:• The battery should be worn in the backpack supplied. Thisplaces the battery at

THE MINELAB ‘GP extreme’42DETECTING6www.minelab.comPROSPECTING TECHNIQUESThe ‘GP extreme’ has superior ground balancing and it is possible to find

THE MINELAB ‘GP extreme’44DETECTING6www.minelab.comIDENTIFYING TARGET SIGNALSPinpointingTo find an object, and reduce the size of the hole requir

THE MINELAB ‘GP extreme’46DETECTING6www.minelab.comRECOVERING THE TARGETSTEP 9 Keep halving the pile which has the target.STEP 10 If it is still

THE MINELAB ‘GP extreme’48DETECTING6www.minelab.comTHE MINELAB ‘GP extreme’49USER INFO77User InfoThis chapter provides a glossary ofterminology,

THE MINELAB ‘GP extreme’50USER INFO7www.minelab.comTECHNICAL SPECIFICATIONSLength Maximum 1300mmMinimum 1100mmWeight Complete with 11” coil 2400g(

THE MINELAB ‘GP extreme’IIwww.minelab.com© Minelab Electronics Pty LtdThis document contains proprietary information which is protected bycopyright

THE MINELAB ‘GP extreme’52USER INFO7www.minelab.comToday’s Date ___________________________________________________________________________________

THE MINELAB ‘GP extreme’54USER INFO7www.minelab.comACCESSORIESACCESSORIESSearch coilsThe ‘GP extreme’ is supplied with the ‘GP extreme’ 1100 and‘GP

THE MINELAB ‘GP extreme’56USER INFO7www.minelab.comHalo Effect After a metal object has remained undisturbed in the soil for aconsiderable amount o

THE MINELAB ‘GP extreme’58USER INFO7www.minelab.comTHE MINELAB ‘GP extreme’59USER INFO7take careThe ‘GP extreme’ is a high quality electronic in

THE MINELAB ‘GP extreme’60USER INFO7www.minelab.comAN IMPORTANT MESSAGE FROM MINELABWe ask YOU, as a responsible detector operator, to take all due

THE MINELAB ‘GP extreme’IVwww.minelab.comTABLE OF CONTENTScontents6DETECTING TECHNIQUES ...

THE MINELAB ‘GP extreme’2INTRODUCTION1www.minelab.comABOUT THIS MANUALThis manual is designed to introduce the detector’s features. It gives you step-

THE MINELAB ‘GP extreme’5ASSEMBLY22AssemblyThis chapter provides details andinstructions on assembling andadjusting the ‘GP extreme’.THE MINELAB ‘G

THE MINELAB ‘GP extreme’6ASSEMBLY2www.minelab.comUNPACKING YOUR ‘GP Extreme’A. ‘GP extreme’ 1100 Coil with Skid Plate andFibreglass Lower Shaft

THE MINELAB ‘GP extreme’8ASSEMBLY2www.minelab.comInventoryWhen unpacking your ‘GP extreme’, you will find that a number ofthe components have been

THE MINELAB ‘GP extreme’10ASSEMBLY2www.minelab.comCOMPLETE ASSEMBLY INSTRUCTIONSSecuring and connecting the coil cableNOTE Always ensure that t