OKM eXp 4500 User manual

eXp 4500
Version 2.0
User's Manual

Any information contained in these operating instructions may be changed without prior notice.
OKM does not provide any warranty for this document. This also applies without limitation to implied assurances of merchantability for a
specific purpose. OKM does not assume any responsability for errors in this manual or for any incidental or consequential damage or
loss associated with the delivery, exploitation or usage of this material.
This documentation is available as presented and without any kind of warranty. In no circumstances OKM takes responsibility for lost
profits, usage or data losts, interruption of business activities or all kind of other indirectly damages, which developed because of errors
in this documentation. This instruction manual and all other stored media, which are delivered with this package should only be used for
this product. Program copies are allowed only for security- and savety purposes. The resale of these programs, in original or changed
form, is absolutely forbitten.
This manual may not be copied, duplicated or translated into another language, neither in part nor completely, over the copyright
matters without the prior written consent of OKM.
Copyright © 2020 OKM GmbH. All rights reserved.

3
Table of Contents
1 Introduction ............................................................................................................................................................................. 9
1.1 Preface ......................................................................................................................................................................... 10
1.2 Important Notes ........................................................................................................................................................... 11
1.2.1 General Notes ..................................................................................................................................................... 11
1.2.2 Possible Health Hazards .................................................................................................................................... 11
1.2.3 Surrounding Area ................................................................................................................................................ 11
1.2.4 Voltage ................................................................................................................................................................. 11
1.2.5 Data safety .......................................................................................................................................................... 12
1.3 Maintenance and Services ........................................................................................................................................... 12
1.4 Danger of Explosion during Excavation ...................................................................................................................... 12
2 Install/Uninstall USB drivers on Windows ........................................................................................................................... 15
2.1 Windows XP .................................................................................................................................................................. 16
2.1.1 Install USB drivers on Windows XP .................................................................................................................... 16
2.1.2 Uninstall USB drivers on Windows XP ............................................................................................................... 19
2.2 Windows Vista .............................................................................................................................................................. 22
2.2.1 Install USB drivers on Windows Vista ................................................................................................................ 22
2.2.2 Update USB drivers on Windows Vista ............................................................................................................... 24
2.2.3 Uninstall USB drivers on Windows Vista ............................................................................................................ 28
2.3 Windows 7 .................................................................................................................................................................... 29
2.3.1 Install USB drivers on Windows 7 ...................................................................................................................... 29
2.3.2 Uninstall USB drivers on Windows 7 .................................................................................................................. 34
3 Technical Specifications ....................................................................................................................................................... 35
3.1 eXp 4500 Control Unit .................................................................................................................................................. 36
3.2 Computer, Minimum Requirements (not included) .................................................................................................... 36
3.3 Super Sensor ............................................................................................................................................................... 36
3.4 GPR 25 cm .................................................................................................................................................................... 37
3.5 GPR 50 cm .................................................................................................................................................................... 37
3.6 GPR 75 cm .................................................................................................................................................................... 37
3.7 GPR 100 cm .................................................................................................................................................................. 37
3.8 Tunnel Sensor .............................................................................................................................................................. 37
4 Scope of Delivery .................................................................................................................................................................. 39
5 Control Elements .................................................................................................................................................................. 41
5.1 Overview of the eXp 4500 ............................................................................................................................................. 42
5.2 Control Unit .................................................................................................................................................................. 43
5.2.1 Front View ........................................................................................................................................................... 43
5.2.2 Rear View ............................................................................................................................................................ 44
5.2.3 Side View ............................................................................................................................................................. 44
6 Assembly ............................................................................................................................................................................... 45
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7 Operating Modes .................................................................................................................................................................. 47
7.1 Ground Scan ................................................................................................................................................................. 49
7.1.1 New Ground Scan ............................................................................................................................................... 49
7.2 Pinpointer ..................................................................................................................................................................... 52
7.3 Magnetometer ............................................................................................................................................................. 54
7.4 Tunnel Scan .................................................................................................................................................................. 55
7.4.1 New Tunnel Scan ................................................................................................................................................ 56
7.4.2 Scan Technique ................................................................................................................................................... 56
7.5 Mineral Scan ................................................................................................................................................................ 59
7.5.1 New Mineral Scan ............................................................................................................................................... 60
7.5.2 Scan Technique ................................................................................................................................................... 60
7.5.3 Scan Analysis ...................................................................................................................................................... 62
7.5.3.1 Additional Examples .................................................................................................................................. 65
7.5.4 Determining Position of Anomaly ....................................................................................................................... 66
7.6 Browse Scans .............................................................................................................................................................. 67
7.7 Settings ........................................................................................................................................................................ 69
7.8 Exit ................................................................................................................................................................................ 70
8 Field procedure ..................................................................................................................................................................... 71
8.1 6 Major Rules to Follow ............................................................................................................................................... 72
8.2 General scanning procedure ....................................................................................................................................... 73
8.2.1 Scan Mode ........................................................................................................................................................... 73
8.2.2 Regulation of the number of impulses per scanning path ................................................................................ 74
8.3 Special notes for field procedure ................................................................................................................................ 76
8.3.1 Orientation of probe ............................................................................................................................................ 77
8.3.2 Parallel or Zig-Zag? ............................................................................................................................................ 77
8.3.3 Manual or automatic impulse mode? ................................................................................................................ 77
8.3.4 Tips from the trainers themselves ..................................................................................................................... 78
9 Scanning Techniques ............................................................................................................................................................ 81
9.1 Super Sensor ............................................................................................................................................................... 82
9.1.1 Super Sensor Training Marks ............................................................................................................................. 83
9.1.2 Super Sensor Orientation ................................................................................................................................... 83
9.2 Control Scans ............................................................................................................................................................... 85
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Illustration Index
Figure 2.1: Install USB drivers: Windows XP, Step 1 ......................................................................................................... 16
Figure 2.2: Install USB drivers: Windows XP, Step 2 ......................................................................................................... 16
Figure 2.3: Install USB drivers: Windows XP, Step 3 ......................................................................................................... 17
Figure 2.4: Install USB drivers: Windows XP, Step 4 ......................................................................................................... 17
Figure 2.5: Install USB drivers: Windows XP, Step 5 ......................................................................................................... 18
Figure 2.6: Install USB drivers: Windows XP, Step 6 ......................................................................................................... 18
Figure 2.7: Uninstall USB drivers: Windows XP, Step 1 .................................................................................................... 19
Figure 2.8: Uninstall USB drivers: Windows XP, Step 2 .................................................................................................... 19
Figure 2.9: Uninstall USB drivers: Windows XP, Step 3 .................................................................................................... 20
Figure 2.10: Uninstall USB drivers: Windows XP, Step 4 .................................................................................................. 20
Figure 2.11: Uninstall USB drivers: Windows XP, Step 5 .................................................................................................. 21
Figure 2.12: Install USB drivers: Windows Vista, Step 1 ................................................................................................... 22
Figure 2.13: Install USB drivers: Windows Vista, Step 2 ................................................................................................... 22
Figure 2.14: Install USB drivers: Windows Vista, Step 3 ................................................................................................... 23
Figure 2.15: Install USB drivers: Windows Vista, Step 4 ................................................................................................... 23
Figure 2.16: Install USB drivers: Windows Vista, Step 5 ................................................................................................... 23
Figure 2.17: Update USB drivers on Windows Vista, Step 1 ............................................................................................. 24
Figure 2.18: Update USB drivers on Windows Vista, Step 2 ............................................................................................. 24
Figure 2.19: Update USB drivers on Windows Vista, Step 3 ............................................................................................. 25
Figure 2.20: Update USB drivers on Windows Vista, Step 4 ............................................................................................. 25
Figure 2.21: Update USB drivers on Windows Vista, Step 5 ............................................................................................. 26
Figure 2.22: Update USB drivers on Windows Vista, Step 6 ............................................................................................. 26
Figure 2.23: Update USB drivers on Windows Vista, Step 7 ............................................................................................. 27
Figure 2.24: Uninstall USB drivers on Windows Vista, Step 1 .......................................................................................... 28
Figure 2.25: Uninstall USB drivers on Windows Vista, Step 2 .......................................................................................... 28
Figure 2.26: Install USB drivers on Windows 7 - Step 1 ................................................................................................... 29
Figure 2.27: Install USB drivers on Windows 7 - Step 2 ................................................................................................... 29
Figure 2.28: Install USB drivers on Windows 7 - Step 3 ................................................................................................... 29
Figure 2.29: Install USB drivers on Windows 7 - Step 4 ................................................................................................... 30
Figure 2.30: Install USB drivers on Windows 7 - Step 5 ................................................................................................... 30
Figure 2.31: Install USB drivers on Windows 7 - Step 6 ................................................................................................... 31
Figure 2.32: Install USB drivers on Windows 7 - Step 7 ................................................................................................... 31
Figure 2.33: Install USB drivers on Windows 7 - Step 8 ................................................................................................... 32
Figure 2.34: Install USB drivers on Windows 7 - Step 9 ................................................................................................... 32
Figure 2.35: Install USB drivers on Windows 7 - Step 10 ................................................................................................. 33
Figure 2.36: Uninstall USB drivers on Windows 7 - Step 1 ............................................................................................... 34
Figure 2.37: Uninstall USB drivers on Windows 7 - Step 2 ............................................................................................... 34
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Figure 5.1: Control unit with standard GPR probe and Super Sensor .............................................................................. 42
Figure 5.2: Control unit, front view .................................................................................................................................... 43
Figure 5.3: Control unit, front view .................................................................................................................................... 44
Figure 5.4: Side View of eXp 4500 ...................................................................................................................................... 44
Figure 6.1: Connection of probe ......................................................................................................................................... 46
Figure 6.2: Connection of Power Pack ............................................................................................................................... 46
Figure 6.3: Connection of Joystick ..................................................................................................................................... 46
Figure 7.1: Ground Scan ..................................................................................................................................................... 49
Figure 7.2: Ground Scan – Parameter ............................................................................................................................... 49
Figure 7.3: Parallel or Zig-Zag ........................................................................................................................................... 50
Figure 7.4: Select parameters and start first scan line .................................................................................................... 50
Figure 7.5: Continue with next scan line and/or save the scan ........................................................................................ 51
Figure 7.6: Graphical Representation of a Measurement in Operating Mode Ground Scan ........................................... 51
Figure 7.7: Pinpointer ......................................................................................................................................................... 52
Figure 7.8: Signature of a ferromagnetic metal target ..................................................................................................... 52
Figure 7.9: Signature of a non-ferromagnetic metal target ............................................................................................. 53
Figure 7.10: Signature of a non-metallic target ................................................................................................................ 53
Figure 7.11: eXp 4500 Main Menu ...................................................................................................................................... 54
Figure 7.12: Tunnel Scan .................................................................................................................................................... 56
Figure 7.13: Tunnel shown in multi-line scan ................................................................................................................... 56
Figure 7.14: Tunnel scan in Turkey, submitted by a customer ......................................................................................... 56
Figure 7.15: Single line method used to locate tunnel ..................................................................................................... 58
Figure 7.16: Mineral Scan .................................................................................................................................................. 60
Figure 7.17: Save completed Mineral Scan ....................................................................................................................... 61
Figure 7.18: Visualizer 3D Screen shot .............................................................................................................................. 62
Figure 7.19: Side View of Scan Area .................................................................................................................................. 62
Figure 7.20: Natural Mineral Field ..................................................................................................................................... 63
Figure 7.21: Natural Mineral Field (additional example) .................................................................................................. 63
Figure 7.22: Example showing the typical signal of non-ferrous metal ........................................................................... 64
Figure 7.23: Shows a weak signal which can be smaller or deeper. ................................................................................ 65
Figure 7.24: Measure value indicating a non-ferrous anomaly ........................................................................................ 65
Figure 7.25: Position of anomaly with distance ................................................................................................................. 66
Figure 7.26: Menu: Browse scans and select stored measurement ................................................................................ 67
Figure 7.27: Language Icon ................................................................................................................................................ 69
Figure 7.28: Settings Menu ................................................................................................................................................ 69
Figure 7.29: Date icon ......................................................................................................................................................... 69
Figure 7.30: Time Icon ........................................................................................................................................................ 69
Figure 7.31: Volume Icon .................................................................................................................................................... 69
Figure 7.32: Reset to Factory Default Icon ........................................................................................................................ 69
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Figure 7.33: Exit Icon .......................................................................................................................................................... 70
Figure 8.1: Starting position of a scan area ....................................................................................................................... 73
Figure 8.2: Scan modes to measure an area ..................................................................................................................... 74
Figure 8.3: Effects of changing the number of impulses and their distance ................................................................... 75
Figure 8.4: Comparison of low and high number of impulses .......................................................................................... 75
Figure 8.5: Different walking speeds during scanning ..................................................................................................... 76
Figure 9.1: Position of Super Sensor ................................................................................................................................. 82
Figure 9.2: Add additional marks to the Super Sensor aids in the scan. ......................................................................... 83
Figure 9.3: Super Sensor Wrong Orientation .................................................................................................................... 84
Figure 9.4: Control Scan the same line in both directions. ............................................................................................... 85
Figure 9.5: Traditional control scan procedure ................................................................................................................. 86
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1 Introduction
CHAPTER 1
Introduction

10 Introduction
1.1 Preface
Dear customer,
all of the engineers, sales, training and support staff at OKM GmbH would like to thank you for your purchase of the eXp
4500.
The eXp 4500 detector works on the principle of Electro-Magnetic Signature Reading (EMSR). Besides the detection of
metallic objects this device is also capable of detecting natural features of the earth like formations of strata, cavities,
voids, faults, ground water and other non-metallic objects. Then of course this equipment is best suited at detecting
burials, graves, sepulchers, treasure, buried utilities, tanks and the like.
The eXp 4500 is able to locate, document and analyze buried objects within various structures and vessels non-intrusively
without having to excavate the area. Using EMSR is particularly useful in areas where detection is a must and excavation
is not possible. The facile and flexible handling of the eXp 4500 can easily and quickly give reproducible results.
With our team of specialists we guarantee that our products are under recurrent control. Our specialists try to implement
new developments in terms of further quality improvements for you.
By purchasing or using one of our products, we cannot guarantee that during your research that you will be successful
and have a find. The recognition of hidden and buried objects depends on a huge number of factors. As you well may
know there are different soil types all over the world with different levels of natural attenuation. Variable soil properties
can and will hamper and alter ultimate scan measurements. Areas where there is an extreme amount of ground water,
varying clays, sands and wet soils making scanning more difficult and may reduce the maximum depth capabilities of any
and all detection equipment, regardless of make or model.
For more information regarding where this equipment has been used and operated, please visit our website. Our
equipment is constantly being tested and when improvements or upgrades are available, we will list them also on our
website.
It is necessary for our company to protect our developments and all the information learned during the “Research and
Development” phases in creating our technology. We strive to stay within the given framework of legislation, patents and
trademark registration.
Please take your time to read this User Manual and familiarize yourself with the operation, functionality and how to
utilize the eXp 4500. We also offer training for your equipment in our factory and on-site. We strive to maintain worldwide
dealer network for assistance and support. Please visit our web site for more information.
OKM Gmb
www.okmdetectors.com

Introduction 11
1.2 Important Notes
Prior to using the eXp 4500 and its accessories, please read these operating instructions carefully. These instructions
give information on how to use the detector and potential sources where precautions should be taken.
The eXp 4500 and its accessories serve for the analysis, documentation and detection of sub-surface anomalies and
ground disturbances. The recorded data of the ground structure will be transmitted to a PC to give a visual
representation using our proprietary software program. Any additional notes to the software should be observed. Please
read the user manual of the software!
1.2.1 General Notes
Being an electronic device, the eXp 4500 has to be treated with caution and treated with care as with any electronic
device. Any failure to observe the safety precautions given or any use for purposes other than the ones it is designed for
may result in damage or destruction of the processing unit and/or its accessories or connected components.
The device has a built in anti-tampering module which will destroy the unit if it is improperly opened. There are no end
user serviceable parts on the inside of the unit.
1.2.2 Possible Health Hazards
If used properly this device normally does not pose any health hazards. According to current scientific knowledge, the
high-frequency signals are not harmful to the human body on account of their low power.
1.2.3 Surrounding Area
When moving this unit from a cold environment to a warmer environment, watch out for condensation. Do not
immediately operate the unit until any possible condensation could have evaporated. The unit is not weather proof and
water or condensation can destroy the unit.
Avoid strong magnetic fields, which may occur in places where there are large electric motors or unshielded
loudspeakers. Try to avoid using this equipment within 50 meters (150 ft) of this type of equipment.
Metallic objects on the ground such as cans, tin, nails, screws or debris can influence your scan data and present
negative results regarding your scan data. Also it is a good habit to remove any metallic objects off of your person like
cellular telephones, keys, jewelry, etc... Do not wear steel toe boots.
1.2. Voltage
The power supply should not be outside the indicated range of values. Use only approved chargers, batteries and
rechargeable batteries which are included in the scope of delivery.
Never use the 115/230 Volt mains supply.
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12 Introduction
1.2.5 Data safety
Data errors can occur if:
•the range of the sender module has been exceeded,
•the power supply of the device or the batteries are too low,
•the cables are too long,
•the unit is operating to close to devices which sends out disturbances or
•atmospheric conditions (electrical storms, lightning, etc...).
1.3 Maintenance and Services
In this section you will learn how to maintain your measuring instrument with all included accessories to keep it in good
condition a long time and to get good measuring results.
The following list indicates what you absolutely should avoid:
•penetrating water
•strong dirt and dust deposits
•hard impacts
•strong magnetic fields
•high and long lasting heat effect
To clean your device please use a dry soft rag. To avoid any damage you should transport the device and accessories
always in the appropriate carrying cases.
Prior to using your eXp 4500 please be sure that all batteries and accumulators are fully charged. Also allow the batteries
to completely discharge before recharging them, regardless if you are working with the external battery or with internal
accumulators. This way your batteries will have a long and durable life.
To charge the external and internal batteries, use only the approved chargers which are part of our scope of
delivery.
1. Danger of Explosion during Excavation
Unfortunately, the last two world wars also made the ground in many places of the world a potentially explosive scrap
heap. A host of those lethal relics are still buried in the ground. Do not start digging and hacking for an object wildly when
you receive a signal of a piece of metal from your device. Firstly, you might indeed cause irreparable damage to a truly
rare find, and secondly, there is a chance that the object reacts in a hostile fashion and strikes back.
Note the color of the ground close to the surface. A red or reddish color of the ground is an indicator of rust traces. As
regards the finds themselves, you should definitely pay attention to their shape. Curved or round objects should be a sign
of alarm, especially if buttons, rings or little pegs can be identified or felt. The same applies to recognizable ammunition
or bullets and shells. Leave that stuff where it is, do not touch anything and, most importantly, do not take any of it home
with you. The killing machines of war made use of diabolical inventions such as rocker fuses, acid fuses and ball fuses.
OKM Gmb
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Introduction 13
Those components have been rusting away in the course of time, and the slightest movement may cause parts of them to
break and be triggered. Even seemingly harmless objects such as cartridges or large ammunition are anything but that.
Explosives may have become crystalline over time, that is, sugar-like crystals have formed.
Moving such an object may cause those crystals to produce friction, leading to an explosion. If you come across such
relics, mark the place and do not fail to report the find to the police. Such objects always pose a danger to the life of
hikers, walkers, farmers, children and animals.
OKM Gmb
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2 Install/Uninstall USB drivers on Windows
CHAPTER 2
Install/Uninstall USB drivers
on Windows
In this chapter you will learn how to install the USB drivers, that are necessary to transfer data from the machine to your
computer software. Please make sure to read the proper section appropriate to your Windows operating system.

16 Install/Uninstall USB drivers on Windows
2.1 Windows XP
The instructions in this section are only valid for Windows XP.
2.1.1 Install USB drivers on Windows XP
The installation of the USB drivers in Windows XP is relatively simple. After you have connected the device with your
computer, switch it on and the message from figure 2.17 appears on your screen.
If your Windows XP has Service Pack 2 installed, you will see the dialog from figure 2.2 if Windows Update has to search
for drivers up to date. Mark entry "No, not this time" and click on Next.
In other versions of Windows this window should not appear.
In the following dialog window like figure 2.3 select the entry "Install software from a list … " and click Next.
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Figure 2.1: Install USB drivers: indows XP, Step 1
Figure 2.2: Install USB drivers: indows XP, Step 2

Install/Uninstall USB drivers on Windows 17
In the next dialog window from figure 2.4 mark the entry No search, select driver individually and click on Next.
Another window will open, represented in figure 2.5, where you have to select the driver file. Therefore click on Data
carrier. ... Immediately another window appears where you click on the button Search ... Then select the file
OKM_LE.INF, which you can find in the directory \drivers\usb_cable of your software CD. Afterwards you have
to click on Open, OK and Next, to start the installation of the files.
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Figure 2.3: Install USB drivers: indows XP, Step 3
Figure 2.4: Install USB drivers: indows XP, Step 4

18 Install/Uninstall USB drivers on Windows
After successful installation of the driver a message like in figure 2.6 will appear on your computer screen. Now the
drivers of your device are installed and you can transfer data to your PC.
OKM Gmb
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Figure 2.5: Install USB drivers: indows XP, Step 5
Figure 2.6: Install USB drivers: indows XP, Step 6

Install/Uninstall USB drivers on Windows 19
2.1.2 Uninstall USB drivers on Windows XP
If you need to delete the USB drivers from your operating system because of a wrong installation, please open the device
manager of Windows XP. Therefore please click on Start > control panel, like represented in figure 2.7.
After that a dialog like in figure 2.8 appears. There you can find the entry system and click twice on it.
The dialog from figure 2.9 appears on your screen. Click on the tab hardware and after that the button device manager.
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Figure 2.7: Uninstall USB drivers: indows XP, Step 1
Figure 2.8: Uninstall USB drivers: indows XP, Step 2

20 Install/Uninstall USB drivers on Windows
A list of devices like in figure 2.10 will be represented. There you can find the entry USBController. By clicking the plus
symbol next of this entry, all available USB devices will be shown.
Mark the device which you like to delete, which means eXp 4500. Additionally the device may be listed as “OKM Quick
Link”. Then click on the button. Alternatively you can select the entry Uninstall in the menu Action.
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Figure 2.9: Uninstall USB drivers: indows XP, Step 3
Figure 2.10: Uninstall USB drivers: indows XP, Step 4

Install/Uninstall USB drivers on Windows 21
The dialog from figure 2.11 appears. Click there on the button OK. Now all drivers will be deleted from your computer. If
needed you can now install the USB driver again correctly.
OKM Gmb
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Figure 2.11: Uninstall USB drivers: indows XP,
Step 5

22 Install/Uninstall USB drivers on Windows
2.2 Windows Vista
The instructions in this section are only valid for the Windows Vista operating system.
2.2.1 Install USB drivers on Windows Vista
The installation of the USB drivers in Windows Vista is relatively simple. After you have connected the device with your
computer, switch it on and the message from figure 2.12 appears on your screen. Click on Locate and install driver
software (recommended).
At the next window, shown in figure 2.13, click on Don't search online.
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Figure 2.12: Install USB drivers: indows Vista, Step 1
Figure 2.13: Install USB drivers: indows Vista, Step 2