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THE MINELAB ‘GP extreme’
40
DETECTING
6
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Some user tips:
• The battery should be worn in the backpack supplied. This
places the battery at the furthest practical distance from the coil.
• Ensure that you do not set the shaft length too short.
• If the coil is too close to your body it might detect your pick, the
battery or any other metal which you are carrying. If false
signals are occurring as you sweep the coil, check that they are
not produced by any metal that you are carrying.
• Move the coil closer, and then further away from your body, in
order to check if the signals are coming from items such as your
pick or battery. If they are, you must increase the distance
between the coil and these items.
Motion detection
The ‘GP extreme’ is a 'motion' detector. Therefore the
detector must be moving over a target to detect it.
Parallel Sweeping Procedure
Figure 6.1
• The coil should be swept over the ground in a side-to-side
sweeping motion.
• While sweeping the coil, it is important to keep it parallel to, and
at the same height from, the ground at all times. Lightly skidding
the coil across the ground can sometimes help in this, depending
on mineralisation.
• Do not raise the coil at the ends of each sweep as this will
reduce the detection depth and may cause false signals.
DETECTING TECHNIQUES
DETECTING TECHNIQUES
Figure 6.1 Parallel Sweeping
Check your footwear
Note: When detecting, do not wear
steel cap boots or shoes with
metal eyelets!
THE MINELAB ‘GP extreme’
41
DETECTING
6
DETECTING TECHNIQUES
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.
Overlap each sweep
• Each sweep of the coil should overlap the area covered by the
previous sweep to ensure a full coverage of the area being
searched.
• Be aware of the search pattern of the coil being used and
overlap sweeps to take this pattern into account.
• See also Pinpointing Technique, pages 43 and 44.
C
A
B
Figure 6.2 Search path
Figure 6.3 Search area from 3 directions
P0530-A
P0531-A
- Minelab USA Inc 1
- Minelab ‘GP extreme’ 2
- TABLE OF CONTENTS 3
- Introduction 4
- ABOUT THIS MANUAL 5
- Assembly 6
- UNPACKING YOUR ‘GP extreme’ 7
- Attaching the coil 8
- Adjust for your own comfort 9
- THE MINELAB ‘GP extreme’ 10
- ASSEMBLY 10
- BATTERY AND CHARGING 11
- Important 11
- Controls 12
- CONTROL FUNCTIONS 13
- Boost (Shallow/N/Deep) 14
- Threshold 14
- Front Panel 15
- Figure 4.17 Tune control 15
- Level Adjust 16
- Soil (Normal/Sensitive/Salt) 16
- Operation 17
- QUICK START INSTRUCTIONS 18
- IMPORTANT 19
- GROUND BALANCING 20
- IRON DISCRIMINATION 21
- Level Adjust Control 22
- Detecting Techniques 23
- DETECTING TECHNIQUES 24
- Check your footwear 24
- PROSPECTING TECHNIQUES 25
- For Maximum Gold Recovery 25
- IDENTIFYING TARGET SIGNALS 26
- Recovering Deep Targets 27
- User Info 28
- TECHNICAL SPECIFICATIONS 29
- SERVICE REPAIR FORM 30
- ACCESSORIES 31
- GLOSSARY OF COMMON TERMS 32
- DETECTOR CARE AND SAFETY 33
- USER INFO 34
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