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THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com Minelab ‘GP 3000’ AN IMPORTANT MESSAGE FROM MINELAB We ask YOU, as a responsible detector operator, to take all due care regarding the environment. Minelab cannot stress enough the importance of being responsible when recovering targets.
INTRODUCTION ........................1 About this manual ............................. 2 Introducing the Minelab ‘GP 3000’ ......................3 ASSEMBLY ..........................5 Unpacking your ‘GP 3000’ [easy reference] ..................6 List of pre-assembled sections and parts ....................7 Complete assembly instructions ......................8 BATTERY ..........................13 Battery and charging ..........................
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Target Signal The audio signal (or change in threshold) caused by the presence of a metal target as the coil passes across it. Tracking The function of Automatic Ground Balance where the ‘GP 3000’ makes continuous adjustments to the ground balance to compensate for changes in the mineralisation of the ground.
Mineralised Ground Most ground contains certain minerals which can cause false signals to be given by a detector. Heavily mineralised ground requires The ‘GP 3000’ incorporates new different ground processing than does neutral or lightly mineralised technological advances and control ground (see Ground Balance).
Ground Balance The ability of the metal detector to compensate for the effects of this chapter will be a worthwhile ground mineralisation. The ‘GP 3000’ has "automatic ground balance". preliminary to basic or advanced When it is used in Tracking mode it continually compensates for detecting.
Minelab wished to thank you for purchasing our most advanced Corporate clothing gold detector ever, and are confident the ‘GP 3000’ will lead you to Minelab also has a range of good quality clothing, e.g. caps, shirts success in your quest for gold and treasure.
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Minelab is always interested in your opinions so if you have any questions or comments labour. Refer to your warranty card for details. regarding the ‘GP 3000’ or any other Minelab product, please feel free to contact us via your local The ‘GP 3000’ 1100 and 1800 coils have a warranty for one year...
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com SERVICE REPAIR FORM Today’s Date ___________________________________________________________________________ ______________________________________________________________________________________ Detector Model _______________________ Serial No. ________________________________________ Purchased From ________________________________________________________________________ Purchase Date __________________________________________________________________________ Assembly Faulty Part(s): __________________________________________________________________________ ______________________________________________________________________________________ Description of Fault: _____________________________________________________________________ This chapter provides details and...
Battery will not charge using vehicle Check for power to cigarette lighter socket in vehicle. P0611-A charger. Check 10 amp fuse in charger plug. Figure 2.1 Contents of the ‘GP 3000’ pack. The ‘GP 3000’ as shipped Battery not holding charge. Try alternative charger.
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com TECHNICAL SPECIFICATIONS ASSEMBLY AND LIST OF PARTS The ‘GP extreme’ Table 7.1 Technical specifications Length Maximum 1300mm Headphones (16) Arm Strap (14) Minimum 1100mm Armrest Cover (15) Weight Complete with 11” coil 2400g Battery (17) &...
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com COMPLETE ASSEMBLY INSTRUCTIONS You will need to assemble the ‘GP 3000’ from all the various components, here are detailed assembly instructions. Assembling and fitting the armrest User Info Figure 2.3, refer also Figure 2.2...
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THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com Attaching the handle and bungy cord Bungy Knuckle (22) Figure 2.4, refer also Figure 2.2 Slide the handle (9) onto the other end of the upper shaft (8) STEP 1 and set it to a comfortable position. Tighten the two screws in...
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Attaching the lower fibreglass shaft Salty Environments Figure 2.2 The ‘GP 3000’ will find objects at greater depth in salty environments. Slide the lower fibreglass shaft (4) into the intermediate shaft (7). However, the interfering signals caused by highly concentrated salt...
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This cable object; it is there and may be connects the battery and headphones to the detector. The ‘GP 3000’ has depth capabilities that will surprise both new and valuable experienced prospectors. If the target appears to be buried deeply, it...
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THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com RECOVERING THE TARGET When you are sure of the location of the target, it is necessary to dig a small hole to recover it. In order to preserve the environment, the hole should be as small as possible.
By shortening the length of the sweep it should be possible to draw The ‘GP 3000’ is supplied with a 6v DC an imaginary line in the ground where the strongest signal is located.
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com BATTERY AND CHARGING IDENTIFYING TARGET SIGNALS Metallic targets will usually give a 'solid' sounding signal when the coil is swept across The Battery the object from any direction. Ground noises usually give a broad uneven signal when the The 6v DC rechargeable battery should provide enough power to coil is swept from different directions.
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PROSPECTING TECHNIQUES The mains battery charger will charge the battery from local mains (AC) The ‘GP 3000’ has superior ground balancing and it is possible to find quite large power outlets. objects near the surface in well-worked areas where other detectors have been unable to Connect the mains charger to a mains outlet.
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THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com Covering the search area Figure 6.2 and Figure 6.3 • As the user moves forward slowly, the search pattern should resemble a snaking path. • To ensure that the ground is thoroughly searched, approach the area from 3 different directions.
‘GP 3000’ control Motion detection panel. A few minutes spent reading this The ‘GP 3000’ is a 'motion' detector. Therefore the chapter will be a worthwhile preliminary detector must be moving over a target to detect it.
• If the tone rises first and then falls, as the coil is passed to utilise the power of your ‘GP 3000’ over a target, this generally indicates a large target. with DVT.
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com DISCRIMINATION CONTROL USING LEVEL ADJUST easy reference CONTROL FUNCTIONS There are two control panels: the rear panel and the front panel. Rear Panel Figure 4.1 G P 3 0 0 0...
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THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com Boost (Shallow/N/Deep) Level Adjust Control Shallow Level Adjust gives the user the ability to select the sensitivity and Figure 4.3 likelihood of a target being discriminated as ferrous when used in Enhances the signals produced by different types of targets.
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Target Target Audible Signal audibility (Figure 4.6). Iron discrimination with the ‘GP 3000’ is the silencing or ‘blanking’ of the No Sound HINT A soft audible headphone signal which is comfortable to threshold which occurs when the detector determines a target is...
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Figure 4.12 Signal control The ‘GP 3000’ is capable of rejecting many iron objects while still detecting • At minimum position the high/low pitch variance to a target is non-ferrous metals. The ability of the detector to discriminate ferrous targets reduced.
THE MINELAB ‘GP 3000’ THE MINELAB ‘GP 3000’ www.minelab.com Ground Balancing Procedure Front Panel Figure 5.2 Figure 4.16 • Move the coil up and down between 20mm and 100mm above the ground and, while moving the coil, change G P 3 0 0 0 Balance from Fixed to Tracking.
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In Disc, a strong response from a ferrous (iron) object will cause If ‘Balance’ is changed to ‘Fixed’, The ‘GP 3000’ has the ability to cancel out the effects of ground the threshold to be 'blanked' or silenced. the detector will no longer adjust mineralisation.
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Changes the sensitivity and search pattern of the coil to allow the also boost any ground noise, therefore Shallow is well suited Cancel ‘GP 3000’ range of coils to become multi-versatile coils with different P0528-A for 'quiet' ground conditions. characteristics to suit different environments. This is achieved by altering the pattern of transmit (TX) and receive (RX) fields of the coil •...
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Cancel changes the electromagnetic field of the coil so that it is particularly stable in areas of electrical interference. This position is Minlab Monoloop coils can be used on the GP 3000 with excellent ideal in areas where the operator wants to detect close to suburbia results.
‘GP 3000’ to its full capacity. Soil switch Use this switch to optimise the detector's ability to detect in different ground conditions (see page 24 for full description).
Take time to read this manual Set Soil switch to N (Normal). STEP 2 NOTE When the ‘GP 3000’ is turned Off, important thoroughly to obtain the best Set Balance switch to Fixed. information (e.g. tuning frequency and ground balance) is...
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