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GPR Concepts

© Radiodetection 2016

33

RD1500 Operation Manual

Section 7 - GPR Concepts

7.1 Theory

Ground  Penetrating  Radar  (GPR)  technology  uses  radio  waves  to  image  objects  in  the
subsurface.  GPR  systems  emit  high  frequency  radio  wave  pulses  and  detect  the  echoes  that
return  from  objects  within  the  subsurface.  Echoes  are  produced  when  the  target  material  is
different from the host material (eg. PVC pipe in gravel)

7.2 Hyperbolas

The GPR display shows signal amplitude versus depth (time) and sensor position along a line.
This is called a “Line Scan”. Since radar energy radiates in a 3D cone shape rather than a thin
beam, a

hyperbola

(or inverted U) is the GPR response from a small point target like a pipe,

rock, or a tree root. The radar wave hits the object before and after going over it and forms a
hyperbolic reflection that can appear on the record even though the object is not directly below
the radar:

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Summary of Contents for RD1500

Page 1: ...RD1500 Ground Penetrating Radar with Ultra Wide Band Antenna Operation Manual 90 RD1500 OPMAN ENG 01 ...

Page 2: ... Assembled 12 Section 5 Getting Started 13 5 1 Powering up 13 5 2 Shutting down 15 5 3 Interacting with the Display Unit 15 5 4 Swipe Down menu 16 Section 6 Tools Setup 18 6 1 Preferences 18 Language 19 Units 19 Volume 19 Brightness 19 Auto Hide Buttons 19 Anonymous Usage Statistics 19 6 2 System Settings 19 Date Time 20 WiFi Settings 20 Locale 23 GPS 23 Reset to Defaults 24 6 3 File Management 25...

Page 3: ...ptions 41 Zoom 41 Color 44 Filter 44 Gain 45 FrequenSee 45 Soil Cal 46 Interp 47 Pause button only available in No Save Mode 49 Drawing arrows only available in No Save Mode 49 Section 9 Grid Scan 51 9 1 Grid Parameters 51 Grid Number 51 Grid Size 52 Grid Resolution 52 Starting data collection 52 9 2 Laying out the grid 52 9 3 Data Collection 53 Physical Data collection 53 Data collection on the D...

Page 4: ...4 6 Creating a Test Line for Data Quality 69 14 7 Contacting the Vendor for Service 69 14 8 Using the Hotspot on your Smartphone 70 Section 15 Care and Maintenance 71 15 1 Battery Care 71 15 2 Cable Care 71 15 3 Skid Pads 72 15 4 Odometer 72 15 5 Storage Cases 72 Section 16 Technical Specifications 73 Section 17 Warranty 74 17 1 Statement of warranty conditions 74 Section 18 Appendix A Health Safe...

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Page 6: ... utilities 1 1 Important notices General This instrument or family of instruments will not be permanently damaged by reasonable electrostatic discharge and has been tested in accordance with IEC 801 2 However in extreme cases temporary malfunction may occur If this happens switch off wait and switch on again If the instrument still malfunctions disconnect the power supply for a few seconds before ...

Page 7: ...ly rated leads Do not position the Display Unit such that it is difficult to disconnect the 37 pin GPR connector The exterior of this product should be cleaned using a damp cloth 1 2 Intellectual property 2016 Radiodetection Ltd All rights reserved Radiodetection is a subsidiary of SPX Corporation Radiodetection and RD1500 are registered trademarks of Radiodetection in the United States and or oth...

Page 8: ...pabilities with Wi Fi data transfer allow locate professionals and surveyors to both mark artefacts and to generate and deliver customer field reports while on site 2 3 Manual outline Section 1 includes an overview of safety procedures and notices Review them before moving on to Section 2 and the rest of this manual Section 3 provides an overview of the RD1500 system Section 4 shows how to assembl...

Page 9: ...rnment for more information Do not use this equipment if you suspect that any component or accessory is damaged or faulty Use authorized accessories only Incompatible accessories may damage the equipment or give inaccurate readings Keep this equipment clean and arrange for regular services with an authorized Radiodetection service center More information can be found in the Appendix or from your l...

Page 10: ...sibility touch screen display Display depth slices from collected grids right in the field UWB Antenna producing high data quality FrequenSee which allows user to selectively view small medium or large subsurface targets Lightweight fibreglass cart frame Built in WiFi capability Integrated GPS receiver with optional external GPS for increased positional accuracy for geo referencing data Ability to...

Page 11: ...iles How much data can be saved 10 grids 99 lines 999 screenshots 9 Projects each with 10 grids 99 lines 999 screenshots File organization Lines and Grids Projects containing Lines Grids Screenshots Map View Displays a single line or grid Shows all lines grids in a Project PC based data display Any JPG viewing software Data can be opened in EKKO_Project ...

Page 12: ...anual Section 4 Assembly 4 1 Out of the box You will find the following components in your RD1500 box Some of these may already be assembled Attach the Cart Handle to Cart Base using the Handle Pins Ensure the Display Unit Tray is facing the operator ...

Page 13: ...icle board or Styrofoam on a level surface under the sensor before securing the Sensor Support Straps Attach the Display Unit onto the Display Unit Tray on the Cart The Display unit slides down into the tray catching on both sides of the mount and is held in place with the pull pin When a click is heard the Display Unit is firmly in place Adjust the angle of the Display Unit by loosening the hand ...

Page 14: ...with the jackscrews Connect the other end of the cable to the Sensor Ensure the cable is routed as shown below Attach the Odometer and Battery Cables The Odometer Cable connects to the closest receptacle on the Sensor Attach the Battery Cable to the Sensor and the Battery The system is now set up and ready to use ...

Page 15: ...bar frame above the battery using a quick release pin Please remove the pipe plug first With the pole pointing upwards insert the GPS mount into the opening where the plug was located and secure it with the quick release pin This allows the GPS to sit directly over the middle of the GPR sensor It comes with 5 8 11 UNC 1A threads at the top of the pole which is standard for many GPS receivers ...

Page 16: ...it CAUTION Ensure that the Display Unit is powered down when connecting or disconnecting the GPS cable If you choose to connect a 3rd party GPS receiver you must ensure the following parameters are set for the GPS to communicate with the Display Unit Baud rate 19200 bps Output string NMEA NEMA string must include GGA Parity None Stop Bits 1 Data Bits 8 CAUTION The serial port of the Display Unit o...

Page 17: ...Assembly RD1500 Operation Manual 12 Radiodetection 2016 4 3 Fully Assembled The fully assembled RD1500 will look like the following Simply reverse the directions above to disassemble for transport ...

Page 18: ...tton on the display unit The LED on the front panel will light up red Figure 5 1 Front of Display Unit Once boot up is complete the color of the LED will indicate the amount of battery power remaining 100 to 20 green 20 to 10 orange 10 to 0 red Once the system boots up you will see the main screen Figure 5 2 If you have purchased or upgraded to the RD1500 Enhanced system you will see the main scre...

Page 19: ... Section 3 Everything remains the same in the on board software except for in the Enhanced system where the main screen will allow you to organize data into projects Within each project you can have a number of lines and or grids From the main menu of the Enhanced system select the project number to work in Projects that contain data are in red color whereas those with no data are in green As you ...

Page 20: ... has embedded software to set survey parameters and collect display and store data The Display Unit offers touch screen operation as well as a water resistant membrane keypad with a number of buttons that can be pressed to perform various tasks Most operations can be done using either the touch screen or the keypad 5 Use the following table as a guide to working with the keypad on the Display Unit...

Page 21: ...r remaining in the battery If the battery power is getting low the icon will change color to orange and red to match the LED color on the keypad GPS Shows which GPS is being used Internal or External and the signal strength WiFi Network Indicates if the system is connected to a wireless network and if so the name of the network See WiFi Settings in Section 6 2 for details on connecting the system ...

Page 22: ...detection 2016 17 RD1500 Operation Manual NOTE Increasing the screen brightness also increases power consumption thus reducing battery life To close the Swipe Down menu touch anywhere on the screen below the swipe down menu ...

Page 23: ...gure 5 3 press Tools to enter this sub menu Here you can set preferences adjust system settings perform system tests and manage files You will see the screen shown in Figure 6 1 Figure 6 1 Tools menu 6 1 Preferences Selecting the preferences option will take you to the sub menu shown in Figure 6 2 Figure 6 2 Setting Preferences ...

Page 24: ...ower consumption thus reducing battery life Auto Hide Buttons If this is set to ON then in Line Scan mode the buttons at the bottom of the screen disappear shortly after data collection begins effectively enlarging the area for data display The buttons will re appear after a couple of seconds whenever the sensor stops moving forward is in back up mode or any button is pressed on the keypad Anonymo...

Page 25: ...mini reports received by the recipient will look like they are coming from this account This account will contain all the SENT messages in its sent box The second step is to connect to a wireless network This connection gives you access to the internet to connect to your Gmail account This connection can be through a standard wireless network or through a hotspot on your cell phone for connecting ...

Page 26: ... the desired network If the connection is successful this can take a minute or so a screen appears asking for the password for that network If the network name is yellow from a previous connection to this network it will not ask for a password because it is a remembered network Once it connects the Network Name will turn green o Forget Removes the password for connected or remembered networks text...

Page 27: ...re ready to send mini reports If setup failed there are 3 possible reasons 1 Email address or password was entered incorrectly try re entering these fields 2 The Display Unit is not connected to the internet try reconnecting to a known network Note that any networks requiring a web based login will not work on the Display Unit 3 Your email security settings may need to be adjusted as shown below N...

Page 28: ...ry or region that you are operating in Use the and buttons to move alphabetically to the next or previous country or region Press Apply to accept the change and return GPS Pressing GPS from the System Settings menu takes you to the GPS sub menu Figure 6 5 The options displayed in the sub menu are listed below ...

Page 29: ...Defaults This will reset all settings and preferences back to the initial settings when the system was shipped Pressing this will ask you to confirm the Reset to Defaults If Yes is selected the next screen will ask if you would like to remove all saved wireless networks and email addresses Figure 6 5 Reset to Defaults a Image on left is the first confirmation screen b If you press Yes you will see...

Page 30: ...e RD1500 Enhanced system on the right displays the lines grids and screenshots for a given project in the middle column The right column displays the total for each that are saved on the system A description of each of the buttons is given below Screenshot Gallery This allows the user to view all screenshots that were saved by pressing the Camera button see Section 12 1 Capturing Screens The displ...

Page 31: ...creenshot as a full screen image On the subsequent screen press Tile View to return to the screen that displays four screenshots per page Delete All Saved Data Pressing this will delete all data saved on the system There is a confirmation window asking if you are sure press Yes to continue deleting press No to cancel Delete Project Enhanced system Pressing this will delete the current project numb...

Page 32: ...cted with GPS Export Data Screenshots and data are always saved to the internal memory of the Display Unit If a USB drive memory stick is inserted into the USB port on the Display Unit pressing the Export Data button will copy all the data files to the USB drive If no USB drive is inserted this option will not be accessible 6 4 System Test The System Test sub menu Figure 6 9 allows the user to per...

Page 33: ...ure 6 9 System Test menu System Information System Information is the only option in System Test which is not actually a test Here information such as the version serial numbers temperature and battery power is displayed Figure 6 10 Figure 6 10 System Information ...

Page 34: ...f the LED itself Odometer Calibration This test ensures that the odometer is calibrated properly for distance Even though the odometer is calibrated in the factory you must calibrate it periodically to ensure accuracy Choose a set distance from the screen press Start and then move the system that exact distance using a measuring tape or other known distance indicator Press Finish when you have tra...

Page 35: ...e is significantly out of range the test will fail The odometer calibration value is stored in the Display Unit If the Display Unit is changed or swapped out you will need to run the Odometer Calibration test again Figure 6 13 Results of Odometer Test Sensor Test This test checks proper operation of the GPR sensor including the amplitude of the pulse Once the cart is tipped backwards and start is ...

Page 36: ...by pressing Calibrate Both involve touching targets on the screen in the allotted time Figure 6 15 Touch screen test on the left Touch screen calibration test on the right GPS The GPS test will ensure that the system is communicating properly with the GPS and receiving data Whichever GPS mode is selected in the System Settings 6 2 3 will be the one used for the test Pressing GPS will show the scre...

Page 37: ...any corrections being applied such as DGPS Pressing Strings will display the raw data strings that are outputted by the GPS Figure 6 17 as they scroll down the screen The user may select this option to verity the GPS is outputting the proper NMEA string format Figure 6 17 GPS Strings Pressing Clear will clear the strings Pressing Info will return to the main GPS test menu ...

Page 38: ...al is different from the host material eg PVC pipe in gravel 7 2 Hyperbolas The GPR display shows signal amplitude versus depth time and sensor position along a line This is called a Line Scan Since radar energy radiates in a 3D cone shape rather than a thin beam a hyperbola or inverted U is the GPR response from a small point target like a pipe rock or a tree root The radar wave hits the object b...

Page 39: ...ave travels to the target and back To calculate depth 𝐷 𝑉 𝑥 𝑇 2 𝑊ℎ𝑒𝑟𝑒 𝐷 𝑖𝑠 𝐷𝑒𝑝𝑡ℎ 𝑉 𝑖𝑠 𝑉𝑒𝑙𝑜𝑐𝑖𝑡𝑦 𝑇 𝑖𝑠 𝑡ℎ𝑒 𝑇𝑤𝑜 𝑤𝑎𝑦 𝑡𝑟𝑎𝑣𝑒𝑙 𝑡𝑖𝑚𝑒 For the RD1500 velocity is indicated by the Soil Calibration Value known as Soil Cal Once the Soil Cal values are set the measured depths will be determined accurately Section 8 6 6 7 4 Soil Calibration values Below is a table of common subsurface materials and their correspo...

Page 40: ...following image displays how air wave reflections affect data An important part of understanding the data image is learning to recognize these unwanted air targets and distinguish them from the targets in the ground Good field notes are indispensable for helping identify unwanted events on the data The best way to identify air reflections is the target hyperbola method Hyperbolas from above ground...

Page 41: ...urface features check for linearity and acquire accurate depth measurements If you have the RD1500 Enhanced ensure you are in the appropriate project before entering this mode From the main screen press the Line Scan button you will see the screen shown in Figure 8 1 Figure 8 1 Line Scan mode The GPS Status indicates the quality of the GPS signal which is based on the number of satellites that it ...

Page 42: ...ata acquisition All data collected will be saved under this line number If the line number is shown in red Figure 8 2 you will see the data preview on the right side of the screen If it s a long line only the last part of the data will be shown From this screen you will have the following options available View press this button to review the previously collected line See Section 6 6 on Line Scan ...

Page 43: ...n acquisition mode showing collected data and axis labels 8 3 DynaQ The RD1500 uses DynaQ an advanced patented technology that adjusts data quality as the system movement speed varies In most situations moving the system at a comfortable walking speed generates data of good quality In situations where target resolution or maximum penetration depth is critical moving more slowly increases data qual...

Page 44: ... box appears with the current position relative to the start of the line listed as the top number Figure 8 4 a Back up Indicator b Moving the Depth Indicator to the top of the hyperbola Depth Indicator A short red horizontal line corresponds to the current depth value as shown in the bottom number in the box To determine the depth of an object move the indicator up or down by dragging the horizont...

Page 45: ...mation about a different point on the screen simply touch and drag the box or cross hair to the desired position Figure 8 5 Touch screen to get depth and horizontal position at any point Pressing Stop ends the line This line is saved internally on the system and cannot be added to 8 5 Flags Flags are often inserted to mark noteworthy surface features such as poles sidewalks changes in terrain etc ...

Page 46: ...h of the data This is commonly referred to as the depth window The pre set values range from 1m to 8m 3 to 25 see Figure 8 7 If the data was collected with a shallower depth the depth setting can still be increased after the fact when reviewing the data In general it is recommended that you set your displayed depth to 1 5 2 times the depth you expect the deepest target to be Position Pressing and ...

Page 47: ...Line Scan RD1500 Operation Manual 42 Radiodetection 2016 Figure 8 7 Varying displayed depth ...

Page 48: ...Line Scan Radiodetection 2016 43 RD1500 Operation Manual Figure 8 8 Varying position or horizontal scaling ...

Page 49: ...gure 8 9 Figure 8 9 Changing Color palettes Filter When the filter is ON flat lying responses in the data are filtered out so that hyperbolic responses from objects are enhanced Figure 8 10 Filtering also helps identify shallow targets that might be masked by the strong signals at the top of the image However it will also filter out other flat lying responses such as soil boundaries so be careful ...

Page 50: ...een applied Pressing this button increments the gain once you reach 9 it cycles back to 1 Avoid over gaining the data as it can make interpretation difficult In general soils that are more electrically conductive eg clays will require a higher gain compared to soils that are less electrically conductive eg sand Figure 8 11 Varying the Gain FrequenSee FrequenSee is a feature that can selectively en...

Page 51: ...depths are accurate The best way to ensure this is by using the hyperbola fitting method since it is based on data collected in the area Crossing linear targets like pipes or cables at a 90 degree angle produces a hyperbola suitable for soil type calibration The Soil Cal value obtained will be used to compute a depth estimate of a target NOTE These depths will be incorrect if the soil type is cali...

Page 52: ...as shown you now have the correct Soil Cal and the measured depths will be most accurate Press Apply to use this value If you get a Soil Cal near 300 this could be an Air Wave Section 7 5 and you should calibrate to a different hyperbolic response Figure 8 13 Adjusting Soil Cal a initial screen b moving the red hyperbola over a hyperbolic response from a subsurface target Interp Short for field in...

Page 53: ... then simply touch the Interp to make it disappear These field interpretations remain with the data and can be used to check if a feature is linear in Map View or in Google EarthTM requires the use of the more accurate external GPS Figure 8 14 Touching the screen to add Interps Figure 8 15 Available colors for Interps ...

Page 54: ...creen for comparison Once you collect some data press Pause You can now move the LMX200 without data scrolling on the screen When you are ready to resume collecting data press Start You will see a thick red vertical line corresponding to when you hit the Pause button and then restarted Figure 8 17 Figure 8 17 Pressing Pause and resuming data collection Drawing arrows only available in No Save Mode...

Page 55: ...ppear and then swipe away in the direction of the shaft In the example in Figure 8 18 the user touched near the hyperbola then swept their finger towards the top left to create the arrow Just like Interps any number of arrows can be drawn on this screen Touch any arrow to remove it Remember that pressing the Camera button will take a screenshot and save it in the currently selected project ...

Page 56: ...ure 9 1 Grid Scan setup from the Enhanced system On the standard RD1500 it will be the same except there will not be a project number Grid Number To select a grid number press the and buttons under Grid Number at the bottom of the screen Alternatively you can press the and buttons on the screen beside Grid on the upper part of the screen Grids that contain no data will have the text shown in green...

Page 57: ...is used Calculating Resolution The size of target will determine line spacing The RD1500 must pass over a target to detect it so line spacing needs to be of the order of the size of the target or smaller when practical This can be adjusted to a larger spacing for larger targets or targets that are linear Tighter line spacing does take longer to collect and the highest resolution may not be economi...

Page 58: ...nd so you have something to aim for Not all lines have to be finished If there is an obstruction preventing you from finishing the line you can simply press Stop and end the line early In addition not all lines have to be collected If your area of interest is only 4m x 4m set the Grid Size to 5m x 5m but don t collect the outer lines Data collection on the Display Unit The data collection screen i...

Page 59: ...ation in Section 6 4 for details Once data is collected the Grid Line will turn red The current line will now advance to the next one and is shown in white The remaining lines to be collected remain shown in green Move back to the start of the next line adjacent to the start of the previous line and repeat the process Once all the lines are done in one direction it will automatically prompt you to...

Page 60: ...if you want to overwrite that line Figure 9 4 Press Yes to proceed Figure 9 4 Overwriting a line Processing data Once you have finished collecting all the data press Slice View at the bottom of the screen The data will be processed and depth slices will be generated The next Section provides information on using Slice View ...

Page 61: ...thick The top and right sides of this image show the dimensions of the grid while the left and bottom sides show the line numbers The left half of the screen displays one of the grid lines and any flags or interpretations that were made The shaded area in between the horizontal red lines corresponds to the depth slice shown on the right To move to another grid line use the 4 way directional keypad...

Page 62: ...umber corresponds to the color palette used for the depth slice image Pressing this button cycles between the 9 available color palettes available on the system b Color Sensitivity cycles between LOW MEDIUM and HIGH This is a function of how much signal data is displayed A setting of HIGH is useful for revealing weaker targets which can sometimes be difficult to see Setting to LOW will help clean ...

Page 63: ...10 3 Grid Lines Press this button to overlay the grid lines on the depth slice image It is useful to see grid lines so you know the position of the GPR Line in the grid displayed in white Press this button to cycle between ON PARTIAL and OFF When set to ON all the collected lines are displayed When set to PARTIAL only some of the grid lines are displayed This can help identify targets in some larg...

Page 64: ...Slice View Radiodetection 2016 59 RD1500 Operation Manual Figure 10 3 Varying the Grid Lines from top to bottom ON PARTIAL and OFF settings ...

Page 65: ...h this will cause the depth slices to be re processed Users may want to change these display settings to make it easier to correlate line scan data with depth slices 10 5 Recollecting lines After looking at the grid data in Slice View you may discover that one or more grid lines need to be recollected for example maybe the starting position was offset If so you will need to enter the Grid Scan men...

Page 66: ...near feature all the interpretations will line up when viewed in Map View Map View only works if GPS data is collected with the GPR data This is what allows the lines and or grids to be positioned correctly with the right orientation If you use the internal GPS only grid data will be shown in Map View If an external GPS is connected both line and grid data will be shown 11 1 Accessing Map View RD1...

Page 67: ...w an image similar to the one in Figure 11 3 You will always have the same options in Map View which are described below Figure 11 3 Map View showing the position of two grids and one line Pressing Zoom will zoom accordingly To reposition the image in the middle of the screen simply swipe the screen until the image is positioned properly Pressing Map Lines will turn the grid lines on or off Pressi...

Page 68: ...WiFi network a message appears confirming the filename of the saved image Figure 12 1 Figure 12 1 Message displayed after pressing the camera button on the Display Unit to capture the screen no WiFi present If you are connected to a wireless network and have a sending email address configured you will see the message in Figure 12 2 asking if you would like to email the screenshot and prompt you to...

Page 69: ...ay Unit to capture the screen with WiFi enabled and a connection to a wireless network The user can enter an email address to send the mini report to 12 2 Mini Reports When a screenshot is emailed it is sent as part of a mini report This mini report also contains a table with information about the collected data including the settings used date and time Figure 12 3 ...

Page 70: ...Capturing Screens and Emailing mini reports Radiodetection 2016 65 RD1500 Operation Manual Figure 12 3 Example of a Mini Report ...

Page 71: ...a USB drive into the USB port Figure 13 1 Once the USB drive is recognized a message will appear telling you that a drive has been inserted and ask you if you wish to export your data to it Figure 13 2 Click Yes to begin the transfer Figure 13 2 When a USB drive is connected to the Display Unit a message opens asking if you would like to export all your data to it Select Yes to transfer immediatel...

Page 72: ...t CSV System Info o Exportxx Projectx Screen Shots o All Screenshots as JPG files GPZ file KMZ file Field Interp Report CSV System Info All screenshot files are saved as JPG files The actual GPR data files are all contained in a GPZ file This can be opened by the EKKO_Project software If data was collected with GPS internal or external a KMZ file is also generated This contains positional informat...

Page 73: ...ing the system again If the battery does not charge up to 12 Volts or more it should be replaced Batteries are fused to protect the system Open the battery case and check that the 10 Amp fuse is OK If necessary replace it with one of the spare fuses available inside the battery case If the battery seems OK but the system still does not power up check the battery cable connections and inspect the b...

Page 74: ...the direct drive odometer insert a large slotted screwdriver into the end of the axle there s already a slot there for it and use a large wrench to slightly tighten the wheel nut The nut only has to be turned slightly 1 8th 1 16th of a turn is usually enough Spin the wheel to make sure it is still free and not too tight 14 6 Creating a Test Line for Data Quality After receiving the system and gett...

Page 75: ...ure that the phone is in discovery mode while connecting On iPhone iOS 9 0 for example this involves going to Settings Personal Hotspot Ensure that the Personal Hotspot setting is turned on and wait on this screen until the RD1500 connection has been established Once you have received confirmation on the Display Unit the cell phone can resume normal use NOTE When setting up a Personal Hotspot you ...

Page 76: ...ischarged condition for some period of time it may not accept charge immediately when it is connected to the charger the fast charge light will not illuminate If the fast charge light does not come on within 6 hours the battery should be considered damaged and should be discarded Do not assume that a battery that is still charging after 8 hours is nearing the end of its charge cycle Typical chargi...

Page 77: ...kid Pads The bottom of the GPR Sensor is covered with one large wear resistant skid pad The skid pad is designed to take the majority of the abrasive wear If the pad wears down enough the less resistant plastic housing may start to wear If this occurs it is best to replace the skid pad It is easily removed with a screwdriver and a new one can be purchased from the vendor 15 4 Odometer The odometer...

Page 78: ...attery Life 4 6 hours Battery Capacity 9 0 Ah Battery weight 4 kg 8 8 lbs Battery charger Built in charger with status indicator Universal AC mains charger input 100 240V 1 5A 50 60Hz Output 12 Volts 3 Amps DVL 500N Display Unit Input 11 18V 4A maximum Temperature Environmental Ruggedized environmentally sealed unit and connections Ingress protection IP rating DVL 500N Display Unit is rated to IP6...

Page 79: ...on warranty contract tort or any other legal theory Warranty services will be provided only with the original invoice or sales receipt indicating the date of purchase model name and dealer s name within the warranty period This warranty covers only the hardware components of the Radiodetection product Before a unit is submitted for service or repair under the terms of this warranty or otherwise an...

Page 80: ...esigned to be used with the product vii Use of the product with accessories peripheral equipment and other products of a type condition and standard other than prescribed by Radiodetection viii Repair or attempted repair by persons who are not Radiodetection warranted and certified repair houses ix Adjustments or adaptations without Radiodetection s prior written consent including a upgrading the ...

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Page 82: ...imilar power levels are mandated by corresponding agencies in other countries Maximum permissible exposures and time duration specified by the FCC and OSHA vary with excitation frequency The lowest threshold plane wave equivalent power cited is 0 2mW cm2 for the general population over the 30 to 300MHz frequency band All other applications and frequencies have higher tolerances as shown graphicall...

Page 83: ...pendix A Health Safety Certification A2 is 200 to 10 000 times lower than mandated limits As such Radiodetection products pose no health and safety risk when operated in the normal manner of intended use ...

Page 84: ...irmed stop using the GPR Where specific jurisdictions have specific GPR guidelines you must comply with them Some of these are described below B 1 FCC Regulations This device complies with Part 15 of the USA Federal Communications Commission FCC Rules Operation in the USA is subject to the following two conditions this device may not cause harmful interference and this device must accept any inter...

Page 85: ... regulations but are operated under contract by personnel specifically trained in the operation of these devices We do not believe that the recent adoption of the UWB rules should disrupt the critical safety services that can be performed effectively only through the use of GPRs and wall imaging systems We viewed these operating restrictions in the broadest of terms For example we believe that the...

Page 86: ...asers and users of their systems of the requirement to undertake detailed coordination of operational areas with the FCC prior to the equipment being operated d Users of authorized coordinated UWB systems may transfer them to other qualified users and to different locations upon coordination of change of ownership or location to the FCC and coordination with existing authorized operations e The FC...

Page 87: ... Note At 68 FR 19751 Apr 22 2003 Sec 15 525 was amended by revising Page 925 paragraphs b and e This amendment contains information collection and recordkeeping requirements and will not become effective until approval has been given by the Office of Management and Budget ...

Page 88: ...CONTACT NAME AND PHONE NUMBER AREA OF OPERATION COUNTIES STATES OR LARGER AREAS FCC ID QJQ NG250 EQUIPMENT NOMENCLATURE NG250 Send the information to Frequency Coordination Branch OET Federal Communications Commission 445 12th Street SW Washington D C 20554 ATTN UWB Coordination Fax 202 418 1944 INFORMATION PROVIDED IS DEEMED CONFIDENTIAL ...

Page 89: ...recommend that users check with the Radio and Telecoms Licensing authority in the country of use Radiodetection sales and support staff can help with contact details and information For those who wish to get more detailed information they should acquire copies of the following documents available from ETSI ETSI EN 302 066 1 V1 2 1 February 2008 Electromagnetic compatibility and Radio spectrum Matt...

Page 90: ...truction companies and emergency rescue or firefighting organizations Should the ground penetrating radar be used in a wall penetrating mode then the following restriction should be noted by the user This In wall Radar Imaging Device shall be operated where the device is directed at the wall and in contact with or within 20 cm of the wall surface This In wall Radar Imaging Device shall be operated...

Page 91: ...es organisations de lutte contre les incendies Si le géoradar est utilisé dans un mode de pénétration au mur la restriction suivante est à noter par l utilisateur Ce dispositif d imagerie radar doit être utilisé lorsque l appareil est orienté vers le mur et en contact avec ou dans les 20 cm de la surface du mur Ce dispositif d imagerie radar doit être utilisé que par les organisations d applicatio...

Page 92: ... electromagnetic fields such as TV stations radio stations and cell phones can cause signals detectable by a GPR which may degrade the quality of the data that a GPR device records and displays Such interference is unavoidable but sensible survey practice and operation by an experienced GPR practitioner can minimize such problems In some geographic areas emissions from external sources may be so l...

Page 93: ......

Page 94: ... we recommend keeping the GPR transmitters at least 6 feet 2m from blasting cap leads as a precaution Some customers do experimental trials with their particular blasting devices to confirm safety We strongly recommend that GPR users routinely working with explosive devices develop a systematic safety methodology in their work areas The UXO issue is more complex and standards on fuses do not exist...

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Page 96: ...rence in which case the user will be required to correct the interference at his her own expense Industry Canada Notice This device complies with Industry Canada s license exempt RSSs 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 Sec...

Page 97: ...ll Free 1 800 665 7953 rd sales ca spx com www radiodetection com Radiodetection Ltd UK Western Drive Bristol BS14 0AF UK Tel 44 0 117 976 7776 rd sales uk spx com www radiodetection com Radiodetection France 13 Grande Rue 76220 Neuf Marché France Tel 33 0 2 32 89 93 60 rd sales fr spx com http fr radiodetection com Radiodetection Benelux Industriestraat 11 7041 GD s Heerenberg Netherlands Tel 31 ...

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