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Contact Details:
Minelab USA
Minelab Electronics Pty Ltd
871 Grier Drive, Suite B1
PO Box 537 Torrensville Plaza
Las Vegas, Nevada 89119
South Australia 5031
UNITED STATES OF AMERICA
AUSTRALIA
email: minelab@minelabusa.com
email: minelab@minelab.com.au
tel: +1-702-891 8809
tel: +61-8-8238 0888
www.minelab.com
Minelab International Limited
Laragh, Bandon
Co. Cork
IRELAND
email: minelab@minelab.ie
tel: +353-23 52101
MINELAB
MINELAB
GP 3500
User's Manual
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Table of Contents
Related Manuals for Minelab GP 3500
Summary of Contents for Minelab GP 3500
- Page 1 MINELAB GP 3500 Contact Details: Minelab USA Minelab Electronics Pty Ltd Minelab International Limited 871 Grier Drive, Suite B1 PO Box 537 Torrensville Plaza Laragh, Bandon Las Vegas, Nevada 89119 South Australia 5031 Co. Cork UNITED STATES OF AMERICA AUSTRALIA IRELAND email: minelab@minelabusa.com...
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Page 2: The Minelab Gp
Minelab wishes to thank you for purchasing our most advanced gold detector ever, and are confident the GP 3500 will lead you to success in your quest for gold and treasure. GP 3500... -
Page 3: Table Of Contents
Prospecting techniques Identifying target signals assembly Recovering the target List of pre-assembled sections and parts user information Complete assembly instructions Technical specifications for the Minelab GP 3500 batteries Troubleshooting Battery and charging Service repair form Warranty controls and operation Glossary of common terms... -
Page 4: Introduction
Minelab is always interested in your opinions so if you have any questions or comments regarding which assists accurate ground balance and increases sensitivity the GP 3500 or any other Minelab product, please feel free to contact us via your local Authorized by overcoming the potential problem of super-saturated Minelab dealer, or write to us: electro-magnetic fields in heavily mineralized ground. -
Page 5: Unpacking Your Gp 3500 [Easy Reference]
Armrest Parts (11) Nylon Nuts (13) 11 inch Double D Coil (1) & Skid Plate (3) Figure 1.1 – Contents of the GP 3500 pack. Figure 2.1 – Pre-assembled sections and parts list The GP 3500 as shipped A.Lower Shaft Assembly... -
Page 6: Complete Assembly Instructions
– continued complete assembly instructions Assembling the lower and upper shaft sections You will need to assemble the GP 3500 from all the various components, so we Refer Figure 2.2 have provided you with detailed assembly instructions. - Page 7 Wrist Strap (9) be uncomfortable. 6Volt Battery (17) Bungy Cord (21) Figure 2.5 The GP 3500 battery assembly Figure 2.4 – Handle and bungy cord Bow Knuckle (22) Backpack Pouch (18) Step 4. Ensure that the power switch on the control box is switched Off before plugging...
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Page 8: Batteries
The GP 3500 power supply is internally regulated and using an external regulated power supply is not necessary, and may damage your detector. If you wish to operate your detector at full power for longer, we would recommend that you own two batteries and swap halfway through the day. - Page 9 LED indicator will not light. If you need to replace the fuse located in the cigarette lighter plug, you will need to use a 3ag/10amp fuse. GP 3500 page 10 GP 3500...
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Page 10: Controls And Operation
Set the Coil switch to Double D. Step 2. Set Soil switch to N (Normal). Take the time to read this manual thoroughly. The GP 3500 introduces new functions and Step 3. Set Balance switch to Fixed. changes the way some others that you may have been familiar with, now work. However experienced you are at using a metal detector, it is important that you read this chapter to Step 4. - Page 11 Now test a very small target at this level. If the threshold level is set too low there is no audible background signal and small target signals will not go above the threshold of audibility. GP 3500 GP 3500 GP 3500...
- Page 12 At maximum position the high/low pitch variance of the target signal is increased.(see fig 4.13) So that there is a large variance between high and low pitch of the target signal. page 16 GP 3500 GP 3500 page 17 GP 3500...
- Page 13 External amplifiers may be used in addition to the Boost switch, provided that they have loudness limiters built in. This prevents loud signals becoming unpleasant or dangerous to the user's hearing. GP 3500 GP 3500 GP 3500 page 18 page 19 www.minelab.com...
- Page 14 – continued Smart Point - A quality initiative from Minelab Electronics The Smart Point is an intuitive new feature of the GP 3500. It serves two functions It is the connection point for the Quick-Trak push button to connect with the control box circuitry;...
- Page 15 – Discrimination levels As the control is turned further clockwise, the operator it able to Iron discrimination with the GP 3500 is the silencing or ‘blanking’ of the threshold and target influence the recognition of a target being ferrous or non-ferrous metal.
- Page 16 TIP: If you are on a known gold producing site or successful patch, it is best to dig up all targets. In this position some small non-ferrous targets eg: coated in ironstone, could be mistaken for ferrous. Figure 4.21 Discrimination target signal on a ferrous target GP 3500 GP 3500 page 24 GP 3500 page 25 www.minelab.com...
- Page 17 (TX) and receive (RX) fields of the coil and how the Minelab Monoloop coils can be used on the GP 3500 with excellent results and we recommend their control box interprets the response. Selection of different positions of this use in conjunction with the coil switch in the M (mono) mode.
- Page 18 When the button is depressed, the Tracking program initiates its automatic ground The GP 3500 has the ability to cancel out the effects of ground balance. This begins with a 5 second very fast ground balance, therefore it is important mineralization automatically.
- Page 19 Operating the GP 3500 in Fixed mode Operating the GP 3500 in Tracking mode In medium to quiet ground you will achieve better depth by operating your GP 3500 in the If the ground is highly mineralized or variable, search in Tracking mode.
- Page 20 Tracking Speed Quick-Trak push button Located in the handle of the GP 3500 is a push button which allows easy operation of If searching in Tracking position, the operator can choose the speed that is best suited to the area. In effect, this gives the operator 4 options to ground balancing.
- Page 21 The detector will then scan through the available range of transmission frequencies and Figure 4.27 three sharp ‘beeps’. Once pressed, the GP 3500 scans through a wide Tune control & button automatically select the frequency that results in the greatest reduction of noise from range of search bands, testing each one for it’s susceptibility to outside...
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Page 22: Detecting
Important: The manual control will signal when you have moved to the end of the The GP 3500 is a 'motion' detector. Therefore the detector must be moving range of frequency bands. When you arrive at the counter clockwise starting point over a target to detect it. -
Page 23: Prospecting Techniques
39 detecting techniques – continued prospecting techniques The GP 3500 has superior ground balancing and it is possible to find quite large Covering the search area objects near the surface in well-worked areas where other detectors have been unable to cope with the high degree of mineralization and/or salt. -
Page 24: Identifying Target Signals
Target could be Sweep anywhere in Direction this Area Exact Location of Target Imaginary Line of Strongest Signal Sweep Coil 90 degrees Figure 5.4 Pinpointing technique to Previous Sweep GP 3500 GP 3500 page 41 GP 3500 page 40 www.minelab.com... -
Page 25: Recovering The Target
When you are sure of the location of the target, it is necessary to dig it out. In order to preserve the environment, the hole should be as small as possible. Afterwards, The GP 3500 has depth capabilities that will surprise both new and experienced prospectors. always replace the soil and grass which is removed. -
Page 26: Troubleshooting
Balance (Fixed/Tracking) 2 pos. switch Audio Output 6.35mm (1/4") headphone socket If you need to return your detector to Minelab for service, please Headphones Supplied supply as many details as possible about the fault. This will enable our Coil (standard) 11"... -
Page 27: Service Repair Form
Today’s date: The GP 3500 control box has a 2 year warranty covering parts and labour. Refer to your warranty card for details. The GP series coils have a warranty for one year against Detector Model: Serial No. -
Page 28: Glossary Of Common Terms
Lead or Aluminium. Ground Balance The ability of the metal detector to compensate for the effects of ground mineralization. The GP 3500 has "automatic ground balance". When it is Pinpoint The method of locating the precise location of a target prior to used in Tracking mode it continually compensates for changes in the digging. -
Page 29: Detector Care And Safety
Salt content causes a negative (-) response rather than the The GP 3500 is a high quality electronic instrument. It has been designed for positive (+) response of laterite soils. The detector needs to professional gold prospecting use and the electronics circuitry is encased in a rugged therefore use different filtering techniques to overcome this effect. -
Page 30: Accessories
Search coils The GP 3500 is supplied with the 11" Double D coil. This coil has been specially designed to take advantage of the new technology and features of this detector. In addition to this there are also a number of other size coils now available to give improved performance to your detector.