Getting Started This section shows you how to quickly set up your detector to begin detecting with minimal adjustment, and describes how to identify and adjust key detector functions� Factory Default Settings Quick Start The factory default settings are optimised for detecting in almost all conditions�...
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Controls 1. Bluetooth® Control Enables Bluetooth® for connection of wireless headphones (page 7)� Initiates Bluetooth® pairing mode for connecting Bluetooth® headphones (long press for at least 2�5 s) (page 7)� 2. Backlight Adjust Cycles through the backlight brightness settings — high, medium, low and off�...
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Display 1. Bluetooth® Indicator Indicates that Bluetooth® wireless audio is on (page 7)� Bluetooth® Qualcomm® Standard Bluetooth® aptX™ Low Latency 2. Double‑D Mode Only available when using a Double‑D coil (page 21)� Indicator Electromagnetic Interference Conductive (EMI) Cancel (default) Ground Cancel 3.
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The GPX 6000™ is supplied with a lithium‑ion rechargeable battery� Beginning each detecting session with a fully charged battery is recommended� The GPX 6000™ battery can be charged using the supplied charging methods: ` The supplied AC plug pack (100 to 240 V AC) ` Typical 12 V DC car or truck systems using the supplied direct battery connection clips�...
ML 100 wireless headphones are best used with GPX 6000™ for best performance� Standard Bluetooth® headphones are also compatible� Minelab ML 100 headphones use aptX™ Low Latency technology, which delivers faster, higher quality audio than standard Bluetooth®, so it will give more precise and faster detection responses�...
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Long press for at least 7 s Press and hold the Bluetooth® button on the side of the GPX 6000™ control panel until the Bluetooth® indicator begins 3. Enable Bluetooth® on the detector to flash rapidly� and enter pairing mode.
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Understanding when to use each coil will increase the productivity of your detecting sessions� The GPX 6000™ is supplied with two coils — a GPX 11™, plus either a GPX 14™ or GPX 17™ coil depending on your region� GPX 11™ Mono The 11‑inch round monoloop coil is a great general‑purpose coil that is recommended for most detecting conditions�...
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The procedure below is a fail‑safe way to begin detecting in a high‑sensitivity automatic mode� Once complete, the GPX 6000™ will automatically maximise sensitivity while minimising noise, so you can concentrate on finding gold� Note that this procedure is the same as the Quick Start procedure (page 3) however a Factory Reset step has been included�...
Automatic Sensitivity There are two Automatic sensitivity modes, Auto and Auto+� Both modes automatically maximise sensitivity and track and remove ground noise, however Auto+ can be deeper in low‑noise conditions� Auto+ generally has slightly higher sensitivity allowing weaker targets to be heard, however some responses may be noise rather than weak targets� The sensitivity adjustment buttons are used to select Auto and Auto+�...
Manual Procedures and Settings Go beyond the factory default Automatic settings to gain even greater control of your GPX 6000™� This section describes how and why you should adjust key detector settings to optimise your detector for specific detecting scenarios�...
Noise Cancel If audio responses become erratic due to EMI, initiate the Noise Cancel process to automatically select a quieter detecting channel� Noise Cancel Procedure START ` 1. Hold the coil 100 mm (4 in) Hold the coil still and 100 mm (4 in) above, and parallel to the above the ground.
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Double‑D Coil Noise Cancel Procedure The GPX 6000™ Double‑D coil excels in locations that have very high levels of interference� They are less noisy than mono coils, but also provide less depth� Generally, a Double‑D coil should only be used if noise cannot be managed by using a Mono coil with the...
Ground Balance control� The GPX 6000™ is constantly monitoring and tracking the ground as well as the operators’ input in order to track and remove ground noise� The in‑built automatic tracking is a reliable choice for most detecting conditions, however this section will guide you through the additional ground balancing options and when to use them�...
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GPX 6000™ tracks automatically to changing ground conditions during normal use� It is effective for typical detecting in most grounds� There will be times when the automatic ground tracking will not be able to track fast enough, such as when moving to a different type of ground�...
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Ground Balance Procedure A complete Ground Balance procedure is recommended below� This guides you through the ideal steps to deal with a number of different ground conditions� The procedure is a sequence of steps that will help you to identify the type of ground you are detecting, and then provides the best steps to manage that noise�...
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Ground Balance Procedure (Continued) Conductive (Salty) Ground ` Turn off the detector and change to a Double‑D coil 7. Change to a Double‑D coil. (see "Changing the Coil" page 9)� 8. Turn the detector on. Turn the detector back on� 9.
Advanced Concepts Identifying the Source of Detector Noise When detecting, there are generally three types of noise that can be heard depending on the detector settings, detecting location, or other factors� Accurately identifying the type of noise you are experiencing will help you to apply the correct solution� Metal detectors experience background noise that can usually be attributed to one or more of three external sources�...
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To Manage Ground Noise: Perform a Ground Balance� To achieve the most thorough Ground Balance, follow the full‑length Ground Balance Procedure (page 17)� To rapidly balance to the ground, follow the Quick‑Trak Ground Balance Procedure (page 16)� In variable ground, use the Difficult Ground Type setting (page 15)�...
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'D' shaped copper wire windings that overlap in the centre of the coil� The GPX 6000™ can sense targets in each of these two windings� EMI, conductive (salt) signals, and targets all produce a different response in each winding that can then be compared� EMI signals produce mostly identical responses in each winding because they are from distant sources�...
Threshold Tone The optional Threshold Tone is a constant background tone that can help to make tiny signals more apparent� It can also help you to set the optimum sensitivity level� "Manual Sensitivity" (page 12) for more information on using the Threshold Tone when adjusting the manual sensitivity to maximise the depth of your detector�...
Troubleshooting If you experience any of the problems listed in this section, follow the recommended steps, in order, before contacting an authorised Minelab service centre� Errors Coil Error System Error If there is a coil error, the error icon and the coil icon is...
General Troubleshooting Detector does not turn on, or turns off by itself Charge the battery� No sound — ML 100 Headphones, wired operation Check that the detector is on, and start‑up has completed� Check that the headphones are plugged in� Check that volume is set to an audible level�...
Do not submerge the detector body in water — it is rain‑proof only� All GPX 6000™ coils are waterproof to 1 metre (3�3 feet), however care must be taken to ensure the coil connector is not submerged�...
Specifications Equipment may vary according to the model Difficult (default) Search Modes or items ordered with your detector� Minelab (Ground Type) Normal reserves the right to respond to ongoing EMI Cancel (default) technical progress by introducing changes in Double-D Modes...
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