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Instruction Manual

Quick Start

Set the front panel switches to the following positions:

Threshold

Auto Tune

Ground

Balance

Tracking

Fixed

Threshold

Off

Hold for

Push and release the On/Off switch on the rear
control panel

(pg. 25)

Turn the Threshold

(pg. 34)

control clockwise until a hum

is audible through the headphones.

Raise the coil off the ground and Press the Auto Tune

(pg. 33)

button to reduce electrical interference. The

tuning process takes approximately 60 seconds. Do not
move the coil or pass metal objects near the coil during
the tuning process.

Whilst lowering and raising the coil between 25mm and
100mm (1" and 4") from the ground, change the Ground
Balance switch to Tracking

(pg. 40)

. Any variations in the

Threshold will smooth out within 3–5 seconds.

Adjust the Threshold

(pg. 34)

to a very faint but still

audible level. It should be smooth with only minor
fluctuations.

You are now ready to start searching!

Search

Mode

Soil /

Timings

Ground

Balance

Coil /

Cancel

Tracking

Special

Deep

Custom

Enhance

Fixed

Double D

Содержание GPX-4500

Страница 1: ...terference The tuning process takes approximately 60 seconds Do not move the coil or pass metal objects near the coil during the tuning process Whilst lowering and raising the coil between 25mm and 10...

Страница 2: ...marks apply The World Leader in Metal Sensing Technology From our origins in 1985 Minelab have specialised in advanced electronic technologies Our competitive advantage was created almost immediately...

Страница 3: ...Technology DVT Smart Electronic Timing Alignment SETA and the latest in high tech analogue components combined with advanced digital processing The GPX 4500 will locate gold in all types of ground es...

Страница 4: ...ce Procedure for Specific 60 Special Soil Timings 61 Manual Tune Reducing Electrical Interference 63 Changing Search Modes 64 Motion Adjusting Sweep Speed 66 Rx Gain Adjusting the Sensitivity of the D...

Страница 5: ...tector s immunity to highly magnetic rocks and soils Through a process of dynamic noise compensation SETA ensures that the threshold stability is improved and maintained allowing you to operate the GP...

Страница 6: ...6 7 List of Parts...

Страница 7: ...sure it is loosened 2 Compress the spring loaded pin of the lower shaft Slide the lower shaft into the upper shaft until the pin reaches an adjustment hole The pin will spring out and clip into place...

Страница 8: ...in the armrest cover and then slide the cover over the armrest Connecting the Control Box to the Upper Shaft 1 Place the detector on a flat surface with the handle facing upwards 2 Position the armre...

Страница 9: ...audio level when a correctly wired speaker is used The new Minelab Lithium Ion battery will automatically detect if headphones or a speaker is in use and adjust the audio level accordingly See wiring...

Страница 10: ...omfortable Detecting pg 16 Attaching the Bungy Cord 1 Create a loop in the bungy cord 2 Undo the plastic wingnut and remove the bolt from the clamp 3 Push the bolt back through the clamp and loop to s...

Страница 11: ...ough the armrest and strap Grasp the handle of the detector and rest your forearm in the armrest Adjusting the Position of the Handle Your elbow should sit just above the back of the armrest allowing...

Страница 12: ...socket 3 Switch the wall socket on Vehicle Charger Adaptor The vehicle charger adaptor will charge the battery from the accessories socket cigarette lighter of most motor vehicles The socket must be...

Страница 13: ...ruct the battery Do not incinerate the battery In the event of a fault you should return the battery to a Minelab authorised service centre for repair The use of non approved components will VOID YOUR...

Страница 14: ...th and target response to small objects A variation in coil height at the end of each swing may cause confusing sounds and reduce detection depth an even flat sweep is desirable Practise sweeping the...

Страница 15: ...automatically scans a range of frequency channels to help reduce electrical interference Coil Connector Connects the coil to the control box Smart Point is a connection point for the Quick Trak button...

Страница 16: ...ectronics of the detector The On Off switch is located on the rear control panel To turn the detector on or off Press and release the On Off toggle switch Many of the GPX 4500 functions are accessed t...

Страница 17: ...LCD menu These are Patch Factory Preset Selection Hi Mineral Hi Trash Test A This allows a total of six separate search modes which can be set up for different circumstances The Main Menu functions ar...

Страница 18: ...is mode will help to stabilise the detector in highly mineralised soils yet still remain sensitive to small and deep targets You may need to adjust the Rx Gain setting to suit your particular location...

Страница 19: ...ore performing the Auto Tune process When the process is complete simply return the Motion speed to its original setting The detector may be affected by electrical interference from powerlines radio t...

Страница 20: ...vel is set too high or too low these very small variations may be missed Listening for a target signal with a high Threshold would be like trying to hear a whisper within a crowded noisy room A high T...

Страница 21: ...desired target sizes Soil Timings can make a big improvement to your finds Certain Timings have a particular affinity to certain soil conditions magnetic alkaline neutral etc and on different target...

Страница 22: ...is changeable or when you want to cover a large area quickly and efficiently Fixed Fixed holds the last Ground Balance setting In ground where conditions allow Fixed will provide greater depth sensiti...

Страница 23: ...odically test that you are still in harmony with the ground by stopping then raising and lowering the coil If the Threshold remains stable then you are still Ground Balanced If there is a change in th...

Страница 24: ...the coil to test if you are still in harmony with the ground stop then raise and lower the coil If the Threshold remains stable then you are still ground balanced If there is a change in the Threshold...

Страница 25: ...ry close to the coil It is recommended you use the left edge of the coil to pinpoint shallow targets Cancel This setting provides a receive field that is particularly stable in areas of electrical int...

Страница 26: ...tings from accidentally being erased whilst allowing the LCD menu Deep Mode and General Mode settings to be quickly restored to factory settings Function Select Setting On Off Hold for FP On Off Hold...

Страница 27: ...t Slow Medium Off All Metal Off All Metal 7 Off All Metal Main Menu Range Universal Functions Factory Preset Special Salt Coarse Sens Extra Sharp Sens Smooth Sens Extra Manual Tune 0 255 128 Search Mo...

Страница 28: ...etting control accesses a settings adjustment screen The Function Select control scrolls through a list of functions Navigation Arrows Indicates which way the menu can scroll Title Indicates what type...

Страница 29: ...odes can be saved with different settings AutoTune Search Mode Soil Timings Ground Balance Coil Rx Cancel Tracking Special Deep Custom Enhance Fixed Double D M N G Threshold Coil Smart Point AutoTune...

Страница 30: ...e the advantage of holding power through most of the life of the charge before going into a rapid shutdown LCD Backlight In low lighting conditions the LCD can be backlit You can select how long the b...

Страница 31: ...ly be very limited A low volume will be more comfortable on your hearing but will increase the risk of missing small targets Try using a large and small target to adjust the Volume Limit to a comforta...

Страница 32: ...evious Minelab models In Tracking General Ground Balance GB samples variations in the ground mineralisation and sets a continuously changing average of the Ground Balance level General GB is ideal for...

Страница 33: ...e Factory Preset Salt Coarse Sens Extra Sharp Sens Smooth Sens Extra You can select which timings will be activated by the Special switch on the control panel Salt Coarse The effect of alkaline salt m...

Страница 34: ...ough the channels This is normal and will not be present when the control is turned slowly Manual Tune Reducing Electrical Interference Auto Tune pg 33 Range 0 255 100mm 4 Note A slower Motion speed p...

Страница 35: ...or your Custom Search mode then while detecting in General or Deep you can quickly change to Custom to pinpoint a target Tip If you wish to quickly compare settings you can change the search mode swit...

Страница 36: ...ou are using a Fast Motion and the Threshold is too unstable you can either select Quiet Audio Type pg 68 or reduce Rx Gain pg 67 Range Very Slow Slow Medium Fast Rx Gain Adjusting the Sensitivity of...

Страница 37: ...erference are somewhat filtered out Boost This is a more aggressive Audio Type Boost will provide very sharp target signals but will also increase any signal caused by ground noises or electrical inte...

Страница 38: ...he optimal position of the stabilizer is one number below the point where the threshold begins to chatter The effect of the Stabilizer could be seen as having a similar effect to that of the Rx Gain c...

Страница 39: ...are using the Target Volume to control ground signals and adjustments to the Rx Gain are required due to a change of coil or location make sure the Target Volume is returned to the Factory Preset set...

Страница 40: ...arge deep targets use the Response function to invert the pitch Normal When Normal is selected and a small target is detected the pitch normally rises to a higher pitch and then falls to a lower pitch...

Страница 41: ...nce pg 41 whenever necessary Ground Balance Tracking Fixed Medium In ground conditions which make operating in Fixed impractical the factory preset Medium setting provides a good compromise between ef...

Страница 42: ...l give a non ferrous response until the signal becomes stronger i e due to a hole being dug and the coil getting closer to the target The Iron Reject function is designed this way to allow maximum acc...

Страница 43: ...could be mistaken as a ferrous target This setting should only be used in very high trash areas or when using the detector in lower mineralisation when searching for coins and relics Range Off All Met...

Страница 44: ...alance Coil Rx Cancel Tracking Special Deep Custom Enhance Fixed Double D M N G Threshold Coil Smart Point Function Select Setting On Off Hold for FP Function Select Setting On Off Hold for FP 1 3 4 3...

Страница 45: ...noloop M Setting with DD coil Strongest Signal To pinpoint a detected target sweep the general area with the coil taking note of where the strongest signal is received By shortening the length of the...

Страница 46: ...our pick to dig to a depth of approximately 50mm 2 4 Sweep the coil over the hole to determine if the target has been dug If the target signal is not heard then the target should be in the pile just d...

Страница 47: ...a signal from one direction and no signal on the return sweep If you are not sure if the sound is ground noise or a target signal you should always investigate Scrape a shallow hole about 30mm 1 deep...

Страница 48: ...eady become a favourite for many operators 18 Round Monoloop Superb depth and good sensitivity in low to medium mineralisation This coil will find targets in heavily worked areas where other operators...

Страница 49: ...s necessary for Iron Reject to work In high trash concentrations a smaller coil is preferable Search Pattern A Double D coil will typically provide a blade like detection pattern from the toe to the h...

Страница 50: ...shape of two D s one reversed The characteristics of a Double D coil are stability especially in heavily mineralised ground good depth and sensitivity and a very thorough search pattern Electromagneti...

Страница 51: ...rch coil windings to determine the exact position of the detected target Rx Receive Refers to the response or electromagnetic field which is received back by the coil and is used by the control box ci...

Страница 52: ...ape may result in some loss of sensitivity Do not expose the detector to high temperatures or leave it in the sun for longer than is necessary Shading will help protect it Do not leave the detector in...

Страница 53: ...t Volume 1 20 Response Normal Inverted Tracking Slow Medium Fast Iron Reject Off All Metal 1 10 User Preferences Main Menu Range User Preferences Backlight Off 1 8 Volume Limit 1 20 GB Type General Sp...

Страница 54: ...Ltd regional distributor within 14 days of the original purchase date If you need to return your detector to Minelab for service please fill out the Minelab Service Repair Form Please supply your name...

Страница 55: ...cut out or photocopy Please explain how we can replicate the problem in order to repair your detector Today s Date Detector Model Serial Number Purchased From Purchase Date Part s Sent Owner s Name Ad...

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