User Manual

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Users Manual

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3d-radar as GeoScope™ User’s Manual Model Geoscope Mk4 Document Version 2.0

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3d-radar as GeoScopeTM User’s Manual Contact Details Software are not modified or misused. The 3d-Radar AS preceding warranties shall not apply to, and 3d- Klæbuveien 196B Radar shall not be responsible for defects or NO-7037 Trondheim, Norway performance problems resulting from (i) the (+47) 7289 3200 Phone combination or utilization of the Product or (+47) 7289 3201 Fax Software with products, information, data, www.3d-radar.com systems or devices not made, supplied or specified by 3d-Radar; (ii) the operation of the Copyright and Trademarks Product or Software under any specification © 2002-2013, 3d-Radar AS. All rights reserved. other than, or in addition to, 3d-Radar's 3d-Radar, GeoScopeTM is a trademark of 3d- standard specifications for its products; (iii) the Radar AS. Microsoft, Windows, and Windows XP unauthorized modification or use of the Product are either registered trademarks or trademarks or Software; (iv) damage caused by accident, of Microsoft Corporation in the United States lightning or other electrical discharge, fresh or and/or other countries. All other trademarks are salt water immersion or spray; or (v) normal the property of their respective owners. wear and tear on consumable parts (e.g., batteries). Release Notice This is the March 2013 release of the GeoScope THE WARRANTIES ABOVE STATE 3D-RADAR'S User’s Manual. It applies to the GeoScope Mk4 ENTIRE LIABILITY, AND YOUR EXCLUSIVE radar. The following limited warranties give you REMEDIES, RELATING TO PERFORMANCE OF specific legal rights. THE PRODUCTS AND SOFTWARE. EXCEPT AS OTHERWISE EXPRESSLY PROVIDED HEREIN, Hardware Limited Warranty THE PRODUCTS, SOFTWARE, AND 3d-Radar warrants that this 3d-Radar hardware ACCOMPANYING DOCUMENTATION AND product (the“Product”) shall be free from defects MATERIALS ARE PROVIDED “ASIS” AND in materials and workmanship and will WITHOUT EXPRESS OR IMPLIED WARRANTY OF substantially conform to 3d-Radar’s applicable ANY KIND BY EITHER 3D-RADAR AS OR ANYONE published specifications for the Product for a WHO HAS BEEN INVOLVED IN ITS CREATION, period of one (1) year, starting from the date of PRODUCTION, INSTALLATION, OR delivery. The warranty set forth in this DISTRIBUTION, INCLUDING, BUT NOT LIMITED paragraph shall not apply to software/firmware TO, THE IMPLIED WARRANTIES OF products. MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND User Software and Firmware License, NONINFRINGEMENT. Limited Warranty THE STATED EXPRESS WARRANTIES ARE IN This 3d-Radar User Software and/or Firmware LIEU OF ALL OBLIGATIONS OR LIABILITIES ON product (the “Software”) is licensed and not THE PART OF 3D-RADAR ARISING OUT OF, OR sold. Its use is governed by the provisions of the IN CONNECTION WITH, ANY PRODUCTS OR applicable End User License Agreement SOFTWARE. SOME STATES AND JURISDICTIONS (“EULA”), if any, included with the Software. In DO NOT ALLOW LIMITATIONS ON DURATION OR the absence of a separate EULA included with THE EXCLUSION OF AN IMPLIED WARRANTY, SO the Software providing different limited warranty THE ABOVE LIMITATION MAY NOT APPLY TO terms, exclusions, and limitations, the following YOU. terms and conditions shall apply. 3d-Radar warrants that this 3d-Radar Software product Limitation of Liability will substantially conform to 3d-Radar’s 3D-RADAR’S ENTIRE LIABILITY UNDER ANY applicable published specifications for the PROVISION HEREIN SHALL BE LIMITED TO THE Software for a period of ninety (90) days, GREATER OF THE AMOUNT PAID BY YOU FOR starting from the date of delivery. THE PRODUCT OR SOFTWARE LICENSE. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE Warranty Remedies LAW, IN NO EVENT SHALL 3D-RADAR OR ITS 3d-Radar's sole liability and your exclusive SUPPLIERS BE LIABLE FOR ANY INDIRECT, remedy under the warranties set forth above SPECIAL, INCIDENTAL, OR CONSEQUENTIAL shall be, at 3d-Radar’s option, to repair or DAMAGES WHATSOEVER UNDER ANY replace any Product or Software that fails to CIRCUMSTANCE OR LEGAL THEORY RELATING conform to such warranty (“Nonconforming IN ANY WAY TO THE PRODUCTS, SOFTWARE, Product”), or refund the purchase price paid by AND ACCOMPANYING DOCUMENTATION AND you for any such Nonconforming Product, upon MATERIALS, (INCLUDING, WITHOUT your return of any Nonconforming Product to 3d- LIMITATION, DAMAGES FOR LOSS OF BUSINESS Radar in accordance with 3d-Radar’s standard PROFITS, BUSINESS INTERRUPTION, LOSS OF return material authorization procedures. BUSINESS INFORMATION, OR ANY OTHER PECUNIARY LOSS), REGARDLESS OF WHETHER Warranty Exclusions and Disclaimer 3D-RADAR HAS BEEN ADVISED OF THE These warranties shall be applied only in the POSSIBILITY OF ANY SUCH LOSS AND event and to the extent that: (i) the Products REGARDLESS OF THE COURSE OF DEALING and Software are properly and correctly WHICH DEVELOPS OR HAS DEVELOPED installed, configured, interfaced, maintained, BETWEEN YOU AND 3D-RADAR. BECAUSE SOME stored, and operated in accordance with 3d- STATES AND JURISDICTIONS DO NOT ALLOW Radar’s relevant operator's manual and THE EXCLUSION OR LIMITATION OF LIABILITY specifications, and; (ii) the Products and FOR CONSEQUENTIAL OR INCIDENTAL © 2013 3d-Radar AS Page I Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual DAMAGES, THE ABOVE LIMITATION MAY NOT APPLY TO YOU. Regulations and Safety Safety The GeoScope Ground Penetrating Radar EXPOSURE TO RADIO FREQUENCY RADIATION comprises a radar transmitter and receiver. The radiated power of the radar antenna is Regulations regarding the use of the radars vary approximately 10mW. This is a very low RF greatly from country to country. In some power. However, we recommend to maintain a countries, the unit can be used without obtaining minimum separation distance of 10 cm an end-user license. Other countries require (approximately 4 in.) between yourself and the end-user licensing. Consult your local bottom side of the radiating GPR antenna to communications governing agency for licensing avoid any harmful radiation levels. information. Before operating this radar, determine if authorization or a license to operate the unit is required in your country. It is the responsibility of the end user to obtain an operator’s permit or license for this Ground Penetrating Radar for the location or country of use. STATEMENT ACCORDING FCC This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by 3d-Radar may void the user's authority to operate the equipment. STATEMENT ACCORDING INDUSTRY CANADA Per RSS-Gen, Section 7.1.3 This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. This Ground Penetrating Radar Device shall be operated only when in contact with or within 1 m of the ground. This Ground Penetrating Radar Device shall be operated only by law enforcement agencies, scientific research institutes, commercial mining companies, construction companies, and emergency rescue or firefighting organizations. Selon RSS-Gen section 7.1.3, cet appareil est conforme aux normes "Industry Canada license- except RSS standards". Son fonctionnement est soumis aux deux conditions suivantes: (1) cet appareil ne doit pas provoquer d'interférences, et (2) cet appareil doit accepter toute interférence, y compris les interférences pouvant provoquer un fonctionnement indésirable de l'appareil. Ce dispositif de radar à pénétration du sol ne doit être utilisé que lorsqu'il est en contact avec ou à moins de 1 m du sol. Il ne doit être mis en œuvre que par les services officiels d'investigation, les instituts de recherche scientifique, les sociétés minières commerciales, les entreprises de construction et les organismes de secours d'urgence ou de lutte contre les incendies. © 2013 3d-Radar AS Page II Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual Table of Contents Table of Contents .................................................................................. 1 Abbreviations ........................................................................................ 1 1 Introduction .................................................................................... 2 1.1 3d-Radar Technology .................................................................. 2 1.2 Collect up to 41 survey lines simultaneously .................................. 3 1.3 Multi-offset recording (optional) ................................................... 5 1.4 Accessories/options .................................................................... 6 2 Hardware Components ..................................................................... 8 2.1 GeoScope Unit ........................................................................... 8 2.2 Aux connector ........................................................................... 9 2.3 GPS input .................................................................................. 9 2.4 Distance Measurement Instrument (DMI) .................................... 10 2.5 Power Supply........................................................................... 11 2.6 Control Computer ..................................................................... 11 3 Antenna Array ............................................................................... 13 3.1 Antenna Trailer ........................................................................ 13 4 Operation ..................................................................................... 16 5 Maintenance ................................................................................. 18 5.1 Cleaning air filter ..................................................................... 18 5.2 Cleaning of connectors .............................................................. 18 5.3 Cleaning the antenna array ....................................................... 18 Abbreviations DMI Distance Measurement Instrument (encoder wheel) GPR Ground Penetrating Radar SFCW Step-frequency Continuous Waves TX Transmitter RX Receiver © 2013 3d-Radar AS Page 1 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 1 Introduction This document contains the user manual for the GeoScope™ Mk4 ground penetrating radar system, designed and manufactured by 3d-Radar AS, see http://www.3d-radar.com. The purpose of this document is to explain how to assemble the hardware and use the GeoScope software. GPR and signal processing theory is not covered by this manual. Some guidelines for configuring the waveform will be provided. 1.1 3d-Radar Technology The GeoScope is a three-dimensional step-frequency ground penetrating radar. The GPR transmits electromagnetic waves through an antenna array and measures the echo from layers and objects in the subsurface. The depth of the objects is found by measuring the travel time from the signal is transmitted until the echo is received. A depth estimate is obtained by multiplying this time with the wave velocity of the signal. The GeoScopeTM GPR is the fastest step-frequency radar on the market. By using a digital frequency source instead of traditional phase-locked loop technology, the GeoScopeTM can generate waveforms from 140 MHz up to 3 GHz. The step-frequency technique has a coherent receiver which means that the whole waveform length is used as 100% efficient integration time. By comparison, impulse GPRs use stroboscopic sampling with significant loss of energy. Figure 1 shows an overview of the GeoScope system with optional GPS system. Figure 1 - GeoScope GPR system overview. The step-frequency waveform gives optimum source signature with a uniform frequency spectrum. The computer control allows the user to set the dwell © 2013 3d-Radar AS Page 2 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual time per frequency as well as the start and stop frequencies as shown in Figure 2. The GeoScope sequentially transmits one complete waveform on each transmitting antenna while receiving on the corresponding receiving antenna. The transmission of one complete waveform on one transmitting element is called as scan. The recorded frequency domain data contain one complex value for each frequency in the waveform. The radar system performs real-time time domain conversion through Fast Fourier Transform allowing the user to view radargrams from the antenna array. These data can be imported into either 3dR Examiner software, or RoadDoctorTM from Roadscanners OY. frequency N frequencies 3.0 GHz Dwell Time Frequency step 140 MHz time Scan Time (for one single antenna element) Figure 2 - Step-frequency waveform. The radar is controlled from a laptop computer through an Ethernet cable. The system can also be configured with GPS/Total Station interface (option) to allow recording of position data through the serial port (RS-232). 1.2 Collect up to 41 survey lines simultaneously The GeoScopeTM GPR is designed to operate with an electronically scanned antenna array with up to 41 antennas. The antennas are scanned sequentially by the radar. The unique antenna system consists of air-coupled bow-tie monopole pairs as shown in Figure 3. This gives a quasi-monostatic antenna configuration with practically zero-offset distance. The air-coupled antenna array can be operated at elevations up to 50cm off the ground allowing high-speed surveys. Figure 1 shows the spatial sampling grid for a typical 3D radar survey. The Distance Measurement Instrument (DMI) outputs a trigger signal to the system every time the array has moved the specified interval along the x- axis. The horizontal sampling interval determines the ∆x in the sampling grid. The array is aligned along the y-axis. The spacing between the antenna elements in the array gives the ∆y in the sampling grid. © 2013 3d-Radar AS Page 3 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual TX Radiation pattern RX Radiation pattern Common footprint Figure 3 - Ultra-wideband bow-tie antenna pair (cross section). As opposed to traditional octave-band GPR antennas, the ultra-wideband bow-tie monopoles have continuous frequency coverage from the 200 MHz range up to 3 GHz as illustrated in Figure 4. In practice this allows the user to collect data from 140 MHz to 3 GHz without changing antennas. By comparison, a similar survey using impulse GPR would require use of 200MHz, 400 MHz, 800 MHz and 1600 MHz antennas. : ency response 3d-Radar frequ 100MHz 200MHz 400MHz 800MHz 1200MHz Figure 4 - Wideband coverage of the 3d-Radar antenna array. The antenna elements are arranged in a linear array as shown in Figure 5 where the transmitting and receiving antennas are displaced to each other. During the survey, the radar combines the transmit/receive antennas sequentially to obtain a number of profiles (or channels) as shown in Figure 5. © 2013 3d-Radar AS Page 4 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Ch# 1 2 3 4 5 ... 25 26 27 28 29 Tx# 1 2 2 3 3 ... 13 14 14 15 15 Rx# 1 1 2 2 3 ... 13 13 14 14 15 Figure 5 – Antenna layout DX2429. The standard range of antenna arrays includes the following models: Model DX0909 DX1213 DX1821 DX2125 DX2429 DX3341 Length (mm) 900 1200 1800 2100 2400 3300 Channels 9 13 21 25 29 41 Figure 6 – Available antenna models. 1.3 Multi-offset recording (optional) The Multi-offset recording allows the user to set up antenna scanning sequences with independent transmitter and receiver antenna locations. In the standard (zero-offset) antenna scanning sequence, the GeoScope transmits/receives sequentially on each antenna pair. Data is collected in the © 2013 3d-Radar AS Page 5 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual transverse direction by firing the antenna pairs in a linear sequence from Antenna Pair #1 to the highest antenna pair. With the Multi-offset feature, the system offers a higher degree of freedom to build more advanced scan patterns. It is for example possible to transmit at Antenna #1 and receive at Antenna # 8, (i.e. with an offset distance along the cross-line direction). The automatic Common-Mid-Point (CMP) gather collects traces centered at the antenna in the center of the array with increasing offsets (normal move-out) as shown in Figure 7. This feature is used to estimate the wave velocity using standard methods (semblance analysis) used in seismic processing. Other scan sequences can be programmed as well. Note that this mode of operation works in a sequential manner, hence using all possible combinations of transmitter and receiver antennas will slow down the data collection speed somewhat. Figure 7 – Common-Mid-Point Gather. 1.4 Accessories/options The GeoScopeTM can be used in combination with digital video camera, GPS and CamLinkTM software from RoadScanners for simultaneous recording of video, GPR data and GPS data. The antenna array can be equipped with a 2-wheel lightweight trailer assembly (Figure 8). The trailer connects to a standard ISO 50mm ball hitch used on cars. For railway operation 3d-Radar can provide railway wheels with adjustable track width. For high-speed surveys we recommend to mount the array directly to the vehicle Figure 8 - Typical GPR setup with a 2-wheel trailer. © 2013 3d-Radar AS Page 6 Revision 2.0 Date: 02/07/2013

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3d-radar as GeoScopeTM User’s Manual 2 Hardware Components The GeoScope system consists of four main parts: 1. GeoScope unit 2. Antenna Array 3. Distance Measurement Instrument (DMI) 4. Control computer 2.1 GeoScope Unit The GeoScope unit is the heart of the GPR system. It contains the RF hardware including the digital signal generator and the ADC system which stores the collected data. The GeoScope runs off 12V or 24V DC. Figure 9 shows the GeoScope front panel with connectors. Figure 9 - GeoScope front panel. The front panel contains the following elements: Item Name Description 1 AUX Aux Ethernet for service + I/O (Section 2.2) 2 GPS RS232 port for recording NMEA0183 messages from GPS, + Additional RS232 port, + Trig I/O (Section 2.3) 3 DMI DMI encoder input. (Section 2.4) 4 Antenna Antenna & Control cable 5 Ethernet Ethernet connector to Operator Computer 6 Power Switch Push to turn on. LED ring is red when system is up and running. Push again to turn off. LED ring goes dark when system is turned off. 7 Power Input Connector for 12/24V DC Input (Section 2.5) To turn on the GeoScope, press the power button briefly and wait for the startup procedure to finish. This takes a few seconds. When the GeoScope is started with an Ethernet cable connected directly to the control computer, it will have the following TCP/IP address: 192.168.8.2. To stop the GeoScope, press the power button briefly and wait for the shutdown procedure to finishWhen the shutdown procedure is finished the power button LED goes dark and fans stop. © 2013 3d-Radar AS Page 8 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual Make sure that the side air inlet and outlet are not covered to ensure proper cooling. The air inlet filter should be cleaned regularly when operating in dusty environments. Insufficient cooling might lead to system malfunction and potential loss of data. Make sure that the GeoScope is not overheated by direct sunlight. 2.2 Aux connector The AUX connector (Lemo EGB.2B.312.CLL) has the following pin configuration: Pin Signal 1 Reserved 2 Reserved 3 GND 4 Ethernet 5 Ethernet 6 Ethernet 7 Ethernet 8 Ethernet 9 Ethernet 10 Ethernet 11 Ethernet 12 N/C 2.3 GPS input The GPS input connector (Lemo EGA.2B.312.CLL) has the following pin configuration: Pin Signal 1 GPS RS-232 TX (output) 2 GPS RS-232 RX 3 GND 4 Reserved 5 Reserved 6 GND 7 Trig out (TTL) 8 Trig in (TTL) 9 GND 10 N/C 11 N/C 12 N/C The Geoscope reads serial data on NMEA0183 format from any GPS or GNSS receiver. Recommended settings for the GPS NMEA output is: © 2013 3d-Radar AS Page 9 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual Parameter Recommended settings Position data $GPGGA (1Hz output rate) Velocity data $GPVTG (1Hz output rate) Baud rate 115,200 Data bits 8 Parity None Stop bit 1 2.4 Distance Measurement Instrument (DMI) The DMI consists of an optical encoder that measures the distance of movement and generates trigger pulses to the GeoScope. The DMI outputs quadrature TTL pulses to allow detection of forward or reverse travel direction. The DMI should be recalibrated at least each time you change its mounting. The DMI input connector (Lemo EGG.2B.312.CLL) has the following pin configuration: Pin Signal 1 +5V DC to DMI-1, max 50mA 2 DMI-1: Quadrature A (TTL) 3 DMI-1: Quadrature B (TTL) 4 Reserved 5 Reserved 6 GND 7 GND 8 DMI-2: Quadrature A (TTL) 9 DMI-2: Quadrature B (TTL) 10 Reserved 11 Reserved 12 +5V DC to DMI-2, max 50mA The relationship between DMI Tick count and the quadrature pulses is shown in Figure 10. One tick is counted for each rising or falling edge of pulse trains A and B. A B Tick 1 2 3 4 5 6 7 8 9 10 11 12 Figure 10 - DMI pulses. The supplied DMI encoder has 1000 pulses/rev. © 2013 3d-Radar AS Page 10 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 2.5 Power Supply The GeoScope runs off 12/24V DC (10.5 – 36V). At maximum load, the GeoScope power consumption is about 80W (7A @ 12V DC). During startup the inrush current might be as high as 10A. Never unplug the power cable from the GeoScope when the system is running. This may cause loss of data and insufficient system shutdown. The Power connector (Lemo EGJ.3B.303.CLA) has the following pin configuration: Pin Signal 1 Pos 2 Neg 3 Chassis GND The GeoScope may be connected to the 12V DC system of a car, but special care should be noted to voltage stability. Always use a separate 12V accumulator or a DC/DC converter with galvanic isolation between the GeoScope and the car 12V outlet to stabilize the voltage. Avoid starting the car engine when the GeoScope is connected since the starter motor might cause severe voltage surge. When running the GeoScope on battery power, it is very important to use a high quality battery. Old batteries may often appear to be fully charged when measured without load, but when connected to load, like the GeoScope, voltage can drop quickly. Under normal operation, a fully charged 50Ah lead-acid accumulator with good health, will last for approximately 5 hours. A gel-type deep-cycle accumulator is recommended both for safety, i.e. reduced risk for acid leakage, and for endurance. Gel accumulators are designed for supplying power over a long period of time with repeated deep discharging. Ordinary car accumulators on the other hand, are constructed for supplying high currents over a short period of time during starting. They are not constructed for being completely discharged repeatedly. 2.6 Control Computer The control computer is usually a laptop with the GeoScope user software installed. The control computer is used to configure the radar waveform, calibrate the DMI, control data acquisition and manage the collected data stored on the GeoScope. The system performance will be affected by the speed of the client laptop. A workstation grade CPU, gigabit Ethernet and a fast SSD is recommended. As of 2013-05-04, the client software runs on Java 1.6 while 3drExaminer requires Windows 7. © 2013 3d-Radar AS Page 11 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual If the computer runs Windows XP with Service Pack 2 or newer, the Windows firewall should be disabled when connecting to the GeoScope; otherwise you will have problems connecting to the GeoScope. If you use other firewall software, and experience connection problems, please turn off this as well. An alternative to disabling the firewall completely is to enable the outgoing ports 19005 and 19003. © 2013 3d-Radar AS Page 12 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 3 Antenna Array 3d-Radar AS provides different antenna array solutions for the GeoScope. Current arrays range from widths of 90 – 330 cm with number of channels ranging from 9 to 41Figure 11 shows the DX2429 antenna array which covers a width of 240 cm using 29 channels. Figure 11 - Antenna Array Model DX2429. 3.1 Antenna Trailer The antenna trailer is a lightweight assembly which allows the array to be towed behind a vehicle. Figure 12 shows a drawing (top view) of the trailer assembly. © 2013 3d-Radar AS Page 13 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual Figure 12 - Antenna trailer. The antenna trailer is assembled by mounting the wheel brackets to the top of the antenna array as shown in Figure 13. Mount the wheel containing the DMI close to Antenna #1. Use the rigging screw to adjust the elevation. Figure 13 - Wheel bracket with DMI. © 2013 3d-Radar AS Page 14 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual Figure 14 – Installation of tow bars. Mount the tow bar to the top brackets on the antenna array as shown in Figure 14. Connect the RF cable to the main antenna connector of the array. Connect the DMI cable to the DMI connector on the wheel bracket containing the DMI. Note that the 2.4 and the 3.3 meter arrays (DX2429 and DX3341) are wider than the vehicle. Use flashlights and visible markers to the edge of the antenna array when operating at roads with traffic. Always wear visible reflex safety west when working at roads and railways. Make sure that the elevation of antenna array is sufficient to avoid that the array hits the surface during data acquisition. Recommended elevation is 10 – 50 cm above the ground surface. © 2013 3d-Radar AS Page 15 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 4 Operation By following the steps below, you are ready to collect data with the Geoscope: 1. Connect the Antenna array, the DMI encoder and DC power to the GeoScope. Optionally, connect the External GPS. 2. Power up the GeoScope by pushing the button at the top right of the front panel. 3. Connect the client computer to the Ethernet interface using a standard CAT5E twisted pair cable. Please make sure that: a. The Local Area Network adapter on the client computer is configured with a fixed IP address in the 192.168.8.x range, where x is different from 2 (192.168.8.5 for example) and with a Subnet Max value of 255.255.255.0 b. Power options of the client PC are set to “High performance” (Win7) or “Always on” (XP). c. There is available hard-disk space for your .3dra files which are stored on the client computer. 4. Open a web browser window and enter http://192.168.8.2 in the URL field. 5. Push the “Launch” button, and the client GUI will appear: © 2013 3d-Radar AS Page 16 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 6. Select survey settings by clicking the cog-wheel icon and selecting “Survey Settings”. a. Adjust the sliders. Note that the max speed changes according to your slider settings. Depending on the “time window” setting, you may or may not get the full depth in the quick view. The full range is always recorded to file. b. Select your “File Location” for storage of 3dra files. c. Press “OK” to close the dialog. 7. Push “Start” button in the main window. Notice file name and location in window title bar. If you are driving too fast, some scans will be lost and vertical red stripes will be shown in the data view. When the acquisition is done, press “Stop”. The 3dra file is now available in your specified location. 8. Make sure the DMI Calibration values, the General DMI Settings and the External GPS Settings are updated in the “System Settings” tab before performing a survey task. 9. 3dR Examiner software version 2.61 or newer is required for post- processing the .3dra files. © 2013 3d-Radar AS Page 17 Revision 2.0 Date: 02/07/2013

3d-radar as GeoScopeTM User’s Manual 5 Maintenance 5.1 Cleaning air filter Remove the air filter inlet cover at the rear right side. Open the cover and use a vacuum cleaner or compressed air to blow dust from the filter. Mount the filter in the same manner as opened. 5.2 Cleaning of connectors The RF and control cables may be cleaned either using compressed air from a can or Isopropanol based electronic cleaning spray. Never use water to clean connectors. During field work, avoid putting connectors on the ground or in water in order to minimize the probability of getting sand or dust inside the connectors. Inspect connectors for corrosion at regular intervals. 5.3 Cleaning the antenna array The antenna array top cover can be cleaned with a wet cloth with ordinary cleaner. Never use high-pressure jet water washer on the antenna. The bottom side can be cleaned firmly with a humid rag. Do not store the antenna array inside the container if it is wet or humid. © 2013 3d-Radar AS Page 18 Revision 2.0 Date: 02/07/2013


Document Created: 2013-07-02 10:28:02
Document Modified: 2013-07-02 10:28:02
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