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UtilityScan Quick Start Guide 

Page 33

 

 

 

Using GPS 

GPS can be a valuable survey tool but it is best to have realistic expectations of accuracy. Commercial survey-grade 
systems with centimeter scale accuracy can cost tens of thousands of dollars. The coarser the accuracy, the more 
affordable GPS systems become. When choosing a system to use with your UtilityScan consider your budget and survey 
objectives. The UtilityScan communicates with external GPS systems via Bluetooth, so your chosen GPS must have the 
capability to connect using Bluetooth.  

Both tablet options contain an internal 
consumer grade (3 m accuracy) GPS. 

Tap GPS on the ScanMax top level setup 
screen and the display will switch to the 
screen on the right. The buttons at the 
bottom allow you to choose: 

GPS Format:

 Various methods of Lat/Long 

display and UTM. 

GPS Options:

 Toggle between the internal 

tablet GPS and external Bluetooth connected 
GPS. 

GPS Status:

 Turn GPS logging on and off. 

Once you turn this on, you will not be able 
to change the format or internal/external 
GPS, so tap this button last. 

Содержание UtilityScan

Страница 1: ...UtilityScan Quick Start Guide MN71 292 Rev C ...

Страница 2: ...cluding the right of reproduction in whole or in part in any form Published by Geophysical Survey Systems Inc 40 Simon Street Nashua NH 03060 3075 USA Printed in the United States SIR RADAN UtilityScan and PaveScan are registered trademarks of Geophysical Survey Systems Inc ...

Страница 3: ...llecting Data and Marking Targets with ScanMax 20 Calibrating for Depth with ScanMax 25 Other Functions in ScanMax Understanding Gain Focus and Save Image 27 Using LineTrac 31 Using GPS 33 Section 4 Playing Back Data 35 Section 5 Data Transfer to a PC 37 Section 6 Updating the UtilityScan Software 40 Appendix A Tablet Specific Cable and Accessory Set 41 Appendix B Optional Accessories 42 Appendix ...

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Страница 5: ...aid without alteration or further damage and which in GSSI s judgment were defective or became defective during normal use GSSI ASSUMES NO LIABILITY FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES OR INJURIES CAUSED BY PROPER OR IMPROPER OPERATION OF ITS EQUIPMENT WHETHER OR NOT DEFECTIVE Before returning any equipment to GSSI a Return Material Authorization RMA number must be ...

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Страница 7: ...ed with today s busy subsurface professional in mind It s a tool that packs a ton of simple to learn functionality into a ruggedly reliable package What Comes in the Box UtilityScan system pre assembled Your choice of control tablet Consumer or Ruggedized Two 2 rechargeable lithium ion UtilityScan batteries with charger Ethernet cable 2 meters long AC power adaptor and set of international plugs f...

Страница 8: ...an s applications Scan EZ and Scan Max You can download an electronic copy of this guide from GSSI s Support site www support geophysical com GSSI also recommends that you take advantage of one of the training opportunities provided for the UtilityScan GSSI offers classroom based training help by our professional training team Please visit www geophysical com or contact training geophysical com fo...

Страница 9: ...ityScan 1 Ergonomic adjustable handle and tablet mount 2 350 MHz HyperStacking antenna 3 Survey wheel connector for cart config 4 GPS mount attachment point 5 Ethernet connector 6 Battery slot 7 Power button 8 Marking grooves 1 2 8 6 7 8 3 4 5 ...

Страница 10: ...UtilityScan Quick Start Guide Page 4 UtilityScan Transport Configurations ...

Страница 11: ...ce up To eject the battery push down on the battery release lever 4 Push the Power button on the top of the UtilityScan housing A blue ring will illuminate around the button The UtilityScan is booting up and is ready to connect to the tablet when the blue ring begins to flash 5 Turn on the tablet and tap the UtilityScan icon You will briefly see the UtilityScan splash screen as the UtilityScan app...

Страница 12: ...h will show after the zeros 3 Tap the box next to the correct UtilityScan entry and then tap Connect The connection will establish after a few seconds and UtilityScan Main Menu screen will appear Note The UtilityScan app will remember the last UtilityScan antenna to which it connected The next time you open the app it will auto connect if it detects the last UtilityScan antenna The connection scre...

Страница 13: ...the tablet 4 Power on the tablet and note the Ethernet symbol in the top right corner of the Android desktop If you do not see it wait for it to appear before going on to the next step 5 Tap the UtilityScan app icon The system is now communicating over Ethernet and the WiFi radio on the UtilityScan antenna will automatically turn off after 15 20 minutes Note that the WiFi radio on your tablet will...

Страница 14: ...however that you should treat this tablet as part of the GPR data collection instrument and avoid loading unnecessary apps such as games etc To connect to a wireless network 1 Turn your UtilityScan antenna Off 2 From the Android tablet desktop tap Settings 3 Tap Wi Fi from the Wireless Networks section at the top You will see a list of available networks Tap the one to which you want to connect 4 ...

Страница 15: ... network you had connected to is off or out of range Follow these steps to do so 1 From the Android tablet desktop tap Settings 2 Tap Wi Fi from the Wireless Networks section at the top You will see a list of available networks Tap the one to which you want to disconnect A box with the network information will pop up 3 Tap Forget You can now connect to the UtilityScan antenna normally ...

Страница 16: ...an Quick Start Guide Page 10 The Main Menu Screen App Selection Carousel Menu Carousel Softkeys Battery Status and Storage Indicators Sidebar Buttons Exit the UtilityScan program and return to the tablet desktop ...

Страница 17: ...s will ensure your depths are more accurate 4 Calibrate Survey Wheel While there is minimal manufacturing variation in the survey wheel encoders it is still a good idea to occasionally calibrate the survey wheel to ensure distance accuracy 5 Save Prompt Tap this to toggle the Save File courtesy check on and off Setting this to Off will cause the UtilityScan to automatically save each file The choi...

Страница 18: ... which you are scanning will provide more accurate depth readings These names refer to the majority of material not just the surface cover See Appendix A in this guide for details 3 Choose Color Table This will set the data display color GSSI recommends that new users choose Color Table 1 4 Once you have configured the UtilityScan tap Collect to begin collecting data Note The UtilityScan will dete...

Страница 19: ...e of the screen as you push the cart The left edge ruler indicates a depth estimate based on the current dielectric value The current project number and file name are shown at the top left corner of the top bar The top bar also indicates depth linear position dielectric and current app Targets such as pipes will appear as hyperbolas when crossed at a 90 degree angle Rebar embedded in concrete Hype...

Страница 20: ...he cursor bisects the hyperbola Draw a mark on the ground lining up with the marking grooves on the side of UtilityScan cart The image at the right shows the Gain function Gain will help to brighten the screen contrast and may make it easier to see targets Tap Gain to bring up the control sidebar Gain Level will affect the whole vertical scale while Shallow and Deep will focus on those portions of...

Страница 21: ...corresponding to the type of utility The mark dot will change to the selected color Please note that the GPR does not discriminate between different pipe types so pipe identification should come from alternate information APWA Uniform Color Code Blue Potable water Purple Reclaimed water irrigation slurry Pink Temporary survey markings White Proposed excavation Red Electric power Orange Communicati...

Страница 22: ...ore complex job situations Let s begin by describing the ScanMax app setup screen and the options available in both levels of the Menu Carousel Primary Menu For the primary level of the Menu Carousel shown you have Project Think of these as separate folders in the tablet s memory Different projects can be used to keep separate the files from different jobs You can toggle through six project slots ...

Страница 23: ... dialogue A correct survey wheel calibration will result in more accurate distance measurements and locations The two options here are Factory Reset and Calibrate To calibrate lay out a measured distance with a tape measure at least 10 ft 3m and follow the onscreen instructions Save Prompt This toggles On Off the courtesy check when you end a file The UtilityScan will automatically save the file w...

Страница 24: ...ft sidebar to transition to the Scan Setup screen at the right The Menu Carousel will have the following options Depth Toggle through a list of preset values for depth of investigation These are approximate Exact depths are a function of soil conditions and the dielectric constant you have specified Dielectric This will allow you to enter in the assumed dielectric value of the material through whi...

Страница 25: ...bert Transform to the migrated data The Hilbert Transform will remove the phase information from the signal whether the wavelet is negative or positive The Hilbert can sometimes improve visibility in situations where the amplitude magnitude is more important than the phase information Zoom Toggles degrees of a horizontal zoom This will stretch your data by a factor of 1 2 or 4 Color Table Choose f...

Страница 26: ... presence of any hyperbolas which could represent a pipe GPR will best image pipes when you cross those pipes at a 90 degree angle Your survey lines should always be positioned to cross the target you are tracking at a 90 degree angle Collecting Data 1 Follow the steps on page 3 to boot up open the UtilityScan app and select your antenna 2 Tap ScanMax to ensure you are in the correct Collection Mo...

Страница 27: ...st move the cart will be understood by the UtilityScan as forward for that file and the system will collect data in that direction As you move you will see data begin to scroll on the screen The UtilityScan will only collect data while the system is moving It will pause collection if you stop Linescan B pane O scope A pane Info Bar ...

Страница 28: ...ola 3 Back the UtilityScan in a straight line You will see a vertical crosshair the backup cursor appear Continue to back the system until the backup cursor bisects the hyperbola You are now over the center of the object Note In some instances you may notice air waves Air waves are large broad hyperbolas which typically occur near the bottom of the window They are caused by GPR energy leaking out ...

Страница 29: ...reen Note that you have only one point so you will need more markouts of the same target before you can consider it a utility line or other linear target 6 Continue to push the UtilityScan forward in a straight line retracing your steps to mark additional targets in that file or to collect more data The UtilityScan will not overwrite data already collected so you will need to move beyond where you...

Страница 30: ...o match the horizontal crosshair to the center of the first largest peak negative or positive as shown in the image on the right 9 Tap Mark from the bottom carousel This will bring up a window with colors conforming to the APWA uniform color code for markouts Tap the desired color chip to place a dot of that color on the target 10Once you are finished tap Close File to return to the app setup scre...

Страница 31: ...onstant If you do more research on the GPR method you may see this referred to as Relative Dielectric Permittivity RDP or by the mathematical shorthand of Er It is a unit less measure describing how easily GPR energy moves through a material The range is 1 air close to the speed of light to 81 water 1 9 the speed of light The UtilityScan has two methods of calibrating for depth Set Depth and Set D...

Страница 32: ...t Depth and move your finger or a stylus up and down along the left scale bar until the correct depth shows in the info bar at the top of the screen Alternatively you can use the Depth buttons in the Menu Carousel to change the value Tap Accept when done For Set Dielectric choose Set Dielectric You will see a blue hyperbola shaped border appear on the screen Using your finger or a stylus slide up ...

Страница 33: ...al dispersion The deeper you go the less energy is left Gain is a mathematical process which works on the received signal to amplify it and counteract the effects of attenuation so you can see deeper targets more easily There are two types of gain available on UtilityScan The first is Automatic Gain Control It is available in ScanMax setup screen in the secondary level of the Menu Carousel Gain Co...

Страница 34: ...hen the backup cursor is onscreen and during Playback Tap Gain from the Menu Carousel to bring up the VDG gain control pane on the right By clicking you can change the gain by increments of 3 dB Adding gain will make the contrast brighter subtracting will make it weaker Gain Level will affect the entire vertical scale while Shallow and Deep will affect the top and bottom half respectively Note tha...

Страница 35: ...re On Off Plus Focus On Off This will display focused data in the top pane and remove the tails from hyperbolas Phase information white black color sequence of the data will be preserved This is best for locating utilities and attempting to identify the pipe material metal vs non metal by the phase or void detection Focus Plus This will also display focused data in the top pane and remove the tail...

Страница 36: ...is onscreen Tapping Save Image will save a screenshot of the entire viewable screen as a PNG image file PNG files are viewable in Windows and Mac OS To access the image you will need to save and download the associated GPR data file It will be saved as FILE a png You can save multiple images from the same data file Each new file will increment by one letter a to b to c etc Focus On Focus Plus ...

Страница 37: ...y Mode works in conjunction with an active source to trace a utility You will need a signal transmitter not provided by GSSI This is a commonly available component already owned by many pipe and cable locators You will need to either direct connect clamp or use the transmitter s induction mode to send a signal through a conductive pipe or one that has a tracer wire Tap LineTrac from the top level ...

Страница 38: ...of the EM field which usually corresponds to the target location Frequency mode detections may show as an M shape You will want to locate at the deepest part of the M There is a constant offset applied in software to line up the LineTrac signal with the side marking grooves on the center of the antenna This means that the hyperbola and Power mode LineTrac peak should line up for a given electrical...

Страница 39: ...es with external GPS systems via Bluetooth so your chosen GPS must have the capability to connect using Bluetooth Both tablet options contain an internal consumer grade 3 m accuracy GPS Tap GPS on the ScanMax top level setup screen and the display will switch to the screen on the right The buttons at the bottom allow you to choose GPS Format Various methods of Lat Long display and UTM GPS Options ...

Страница 40: ...ers Satellites The number of satellites from which the GPS is receiving signal The more the better HDOP Stands for Horizontal Dilution of Precision This is a descriptive value of the quality of your GPS fix The lower the number the better the precision Typically HDOPs less than 2 are considered excellent Usually you will have a lower HDOP with more satellites however it is possible to have many sa...

Страница 41: ...anding resulting from noise Focus Turn the Focus Mode On Off Plus Zoom Toggle a 1 2 or 4 times horizontal stretch for your data 2 Once you have made your selections for these parameters tap Files on the left sidebar to bring up the File Maintenance screen You will see a list of all saved files in the currently selected project Tap the box to the left of the filename you would like to play back You...

Страница 42: ...ta Focus Toggle Focus Mode On Off Plus Save Image Snaps a screenshot of your data and saves it as an image file Transfer the data file to your computer in order to access the image Next File If you have selected more than one file to play back this option will display the next data file in sequence ...

Страница 43: ...d with your system If you have misplaced it they are commonly available at low cost from many electronics stores UtilityScans equipped with the Ruggedized tablet do not require an adapter cable because the ToughPad has a standard sized USB port Simply plug the drive into the USB port You will get this message the first time you plug a new USB drive into either tablet If you tap Use by default than...

Страница 44: ...back from ScanEZ 2 Tap Files from the left sidebar to open the file browser screen 3 Select the files you want to copy by tapping the box to the left of each file name You can also tap Select All to select all files If you have more files than are shown use your finger or a stylus to swipe up down on the list to show more You can also sort the files by date by tapping File Order 4 Once the files a...

Страница 45: ... the right will appear This indicates that the Android OS has detected the drive and has triggered the UtilityScan app If the drive had been used previously the app may automatically open If there is no response from the Android OS than the drive likely cannot be read You should try another USB drive Check 2 Assuming the USB drive can be read by the Android OS the next check happens when you trans...

Страница 46: ...SSI has included an update tool on the tablet You will need to connect to the Internet to download updates Please see page 5 of this Guide for instructions to connect to the Internet Once connected to the Internet tap the Android app browser to access and scroll through the pre loaded apps until you find the Update Launcher Tap the Update Launcher and follow the on screen instructions to download ...

Страница 47: ...ityScan antenna dual bay UtilityScan battery charger with universal plug set and 2 meter long Ethernet cable For systems equipped with the Consumer Tablet GSSI part numbers FGUTILITYSCAN LT and FGUTILITYSCAN B Mount for the Tablet Tablet charger with Micro USB cable USB adaptor cable Ethernet to USB adaptor For systems equipped with the Ruggedized Table GSSI part number FGUTILITYSCAN RLT Mount for...

Страница 48: ...ilityScan system Please contact your GSSI sales representative for details Note The battery booster accessory will significantly extend the battery life of the consumer tablet It is strongly recommended for users of the consumer tablet Pelican Transit Case Tablet Sun Shade Battery Booster Battery Booster Installed ...

Страница 49: ...he UtilityScan handle in a multitude of different ways for different terrain types or operator comfort Below are just a few suggested configurations Note these are shown with the optional but recommended battery life extender for the consumer tablet Ideal for pulling the system through rougher terrain ...

Страница 50: ...b The image at the left shows two utilities located in the grade underneath a concrete slab reinforced with 6 welded wire mesh GPR signals are often blocked by near surface metal however the resolution of the UtilityScan s 350 MHz HyperStacking antenna is fine enough to image the mesh and objects below Utilities Wire mesh ...

Страница 51: ...y of the hyperbola The brightness and symmetry can sometimes be clues that the target is a pipe and not a rock The water line identification comes from non GPR circumstantial evidence This survey was performed near to a marked water valve and local construction codes specify that water pipes must be at least 4 feet deep Water pipe ...

Страница 52: ...but from above it In this case the reflection is caused by overhead powerlines Air waves will always be extremely wide hyperbolas An excellent way to confirm that it is an airwave is to attempt a Set Dielectric calibration on the hyperbola If you get a number of near 1 for the dielectric value then the reflection is an air wave Air Wave ...

Страница 53: ...Notes ...

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