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GSSI StructureScan Mini XT Manual

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  • Page 2 Copyright © 2016-2017 Geophysical Survey Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form Published by Geophysical Survey Systems, Inc. 40 Simon Street Nashua, New Hampshire 03060-3075 USA Printed in the United States SIR, RADAN, UtilityScan and PaveScan are registered trademarks of Geophysical Survey Systems, Inc.
  • Page 3 OF ITS EQUIPMENT, WHETHER OR NOT DEFECTIVE. Before returning any equipment to GSSI, a Return Material Authorization (RMA) number must be obtained. Please call the GSSI Customer Service Manager who will assign an RMA number. Be sure to have the serial number of the unit available Regulatory Information The use of GSSI antennas is governed by different regulatory agencies around the world.
  • Page 4 MAUVAISE UTILISATION DE SON EQUIPEMENT DÉFECTUEUX OU NON. Avant de retourner tout équipement à GSSI, une autorisation de retour matériel (RMA) doit être obtenue. Appelez s'il vous plaît le service clientèle GSSI qui attribuera un numéro de RMA. Soyez sûr d'avoir le numéro de série de l'unité.
  • Page 5 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual FCC Notice (for U.S. Customers): This device complies with part 15, class F of the FCC Rules: Operation is subject to the following conditions: 1. This device many not cause harmful interference, and 2.
  • Page 6 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual...
  • Page 7 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual For U.S. Customers Ground Penetrating Radar Coordination Notice And Equipment Registration Note: This form is only for Domestic United States users. The Federal Communications Commission (FCC) requires that all users of GPR who purchased antennas after July 15 , 2002 register their equipment and areas of operation.
  • Page 8 2700 MHZ QF7MINIXT Receipt Date Of Equipment: Fax this form to the FCC at: 202-418-1944 Mail to: Frequency Coordination Branch, OET Federal Communications Commission 445 12 Street, SW Washington, D.C. 20554 ATTN: UWB Coordination Do not send this information to GSSI.
  • Page 9 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Canadian Requirements for RSS-220 Canadian Requirements of RSS-220 for Ground Antennas 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.
  • Page 10 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Declaration of CE Conformance Geophysical Survey Systems, Inc. hereby confirms that the following named products have been tested and meet the requirements of the European standards as indicated: Models: 3101A, 5106A, 52600S, 62000, MINISIR, MINIHR, LL3P, LLTRx, 41000SA, 42000S, 50400S, 51600S, 50270S, D50300/800 Description: Ground Penetrating Radar Antennas European Standards: ETSI EN 301 489-32 V1.1.1 (2005-09), ETSI EN 301 489-V1.6.1...

  • Page 11: Table Of Contents

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Table of Contents Chapter 1: Using the StructureScan Mini XT .................1 Section 1: Introduction ....................... 1 StructureScan™ Mini XT ...................... 2 Section 2: Getting Started....................3 Section 3: Using ScanEZ Mode ..................5 Section 4: Using the Scan3D App .................
  • Page 12 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual...

  • Page 13: Chapter 1: Using The Structurescan Mini Xt

    GSSI also recommends that you take advantage of one of the training opportunities provided for the Mini XT. GSSI offers a full suite of webinars, videos, and live training classes for you to deepen your knowledge of GSSI products and GPR applications. Please visit www.geophysical.com...

  • Page 14: Structurescan™ Mini Xt

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual StructureScan™ Mini XT Front/Top View Ergonomic removable handle and controls Easy to use operator interface with color display screen Survey wheel encoder Guiding laser for locating Accessory attachment point Back View Power button Battery slot USB port Battery release...

  • Page 15: Section 2: Getting Started

    Section 2: Getting Started Remove any protective tape from the wheels. GSSI recommends fully charging the batteries prior to use. Insert a fully charged battery into the battery slot. The battery should be inserted with the small plastic tabs pointing down.
  • Page 16 Setting UI App Mode The StructureScan Mini XT apps are divided into two categories for ease of use. These categories are referred to as UI Modes. The UI Modes are accessible from the menu carousel, secondary menu: •...

  • Page 17: Section 3: Using Scanez Mode

    Setting this accurately will allow for more accurate depth readings. These names refer to the concrete’s cure, not any surface water. See Appendix A in this guide for details. Choose Color Table: This will set the data display color. GSSI recommends that new users choose Color Table 1.
  • Page 18 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Understanding the Mini XT Screen File Depth Scale Information Backup Cursor User Mark Hyperbola Battery/Storage Status Menu Carousel If you haven’t already done so, pull trigger to begin collecting data and roll the Mini XT across the concrete.
  • Page 19 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • New File: This will stop and save your current file and begin collecting a new one. The file number in the top-left corner will advance by 1. • Close File: This will stop and save the current file and return you to the ScanEZ menu screen. •...
  • Page 20 Note: GPR does not provide object size so GSSI recommends that you draw 2 inch (5 cm) thick line covering your drawn markouts so as to provide a safe margin near any objects.
  • Page 21 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Playing Back 2D ScanEZ Data To play back previously saved files, select Playback from the ScanEZ Main menu using the handle keypad. This will open the Playback and File Transfer menu (below). Click the Right arrow on the handle keypad to activate the file browser.

  • Page 22: Section 4: Using The Scan3D App

    Dielectric: Setting this correctly results in a more accurate depth reading on your objects as well as a cleaner 3D image. Please see Appendix A for details on setting the dielectric. GSSI recommends using one of the tools available in ScanMax to accurately gauge your dielectric so that you can enter that value during 3D setup.
  • Page 23 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Collecting a Grid Lasers properly aligned Position the Mini XT on the first line in the “X” direction on the scan template. Take care that the side lasers are lined up on the thick, black start line and that the front laser is aligned with the line you are scanning.
  • Page 24 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Recalling a Grid for Review After you have finished collecting a grid and selected Close Grid, you will see the Scan3D Scan Setup screen. Click Up on the handle keypad to return to the Scan3D Main Menu (at right).
  • Page 25 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Slicing To slice through the data, select a viewpoint which shows a clear image of the horizontal plane. Move your finger along the Slicing Bar to drag the view slice thought the data. To jump to a particular depth, just tap the slicing bar at point corresponding to the desired depth.
  • Page 26 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Drill Hole The menu carousel will have the following options once drill hole is selected: Cursor: Toggles the yellow cursor on/off. This may make the drill hole location and color easier to see. Position: Allows you to show more/less data on the screen.

  • Page 27: Section 5: Using The Scanmax App

    Mini XT. • Calibrate Antenna: This will calibrate your Mini XT’s system gain and antenna surface position. GSSI recommends that you periodically re-calibrate your Mini XT. In the secondary (bottom) level of the carousel, you will have the following options: •...
  • Page 28 • Linetrac: Turns on the LineTrac passive AC detector accessory and sets it to detect 50 or 60 Hz. The LineTrac hardware is a separate purchase. Please contact your GSSI Sales Rep for details. • UI Mode: This option sets the user interface mode. The Mini XT has three modes into which the scan apps are grouped.
  • Page 29 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • Auto Target: This toggles on/off the Mini XT’s automatic target location algorithm. With this turned on, the Mini XT will attempt to place dots at the peaks of any hyperbolas. This is only meant to assist you with data interpretation and you should carefully examine the output of this function to ensure that no important targets are missed.
  • Page 30 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • Zoom: This will affect the horizontal scale of your data display. Choices are ½, 1, 2, 3, and 4 with higher numbers zooming more. If you have Focus toggled this will have the effect of stretching the vertical scale of the focused data which may make it easier to see.
  • Page 31 Manual Working with LineTrac LineTrac is an optional accessory for your StructureScan Mini XT. It is a passive device designed to detect AC current flowing through embedded electrical conduits. LineTrac will detect AC current flowing at 50 or 60 Hz, but the conduit must be under load to be detectable. In other words, the device connected to the conduit must be on and drawing current.
  • Page 32 Manual The above image shows a LineTrac detection. The peak corresponds to the target location. You can use the StructureScan Mini XT’s backup cursor function to identify the hyperbola belonging to the likely conduit. The above image is of the same area as the preceding image, but this time the appliance connected to the conduit has been powered down.

  • Page 33: Section 6: Calibrating For Depth In The Scanmax App

    • Auto Depth: Choosing Auto Depth will cause the Mini XT to run GSSI’s patented auto-depth algorithm which takes several signal parameters into account in order to accurately calculate target depth.
  • Page 34 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Using “Set Depth” The Set Depth calibration method is much more accurate if you select the A+B scan display method from the Scan Max App scan menu carousel. Collect a section of data and back the Mini XT to the hyperbola representing the object to which you know the depth.
  • Page 35 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Using “Set Dielectric” The Set Dielectric function requires that the data contains at least one hyperbola. This hyperbola should come from a target that you have scanned across at a 90 degree angle. Collect a section of data and back the Mini XT to your chosen hyperbola.

  • Page 36: Section 7: Using The Dualscan App

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 7: Using the DualScan App DualScan enables you to view two different profiles on the screen at the same time so that you can judge differences between them. A common reason to do this is deciding if there is a difference in the apparent depth of objects.
  • Page 37 If you do not have a saved Base file, Click Scan from the Scan Setup screen and collect a file. GSSI suggests marking the location of the side lasers on the concrete so that you can line up successive comparison files. This first file will be your base file.
  • Page 38 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Playing Back DualScan Data You can use DualScan to playback 2D files collected with DualScan or any of the 2D apps. You will need to specify which file to use as the Base file. Click Playback Setup from the DualScan Main Menu screen.

  • Page 39: Section 8: Using The Palm Xt

    Once the Palm XT is attached to the StructureScan Mini XT, you may power the unit on and use it as you would normally. The menu options and modes (ScanEZ, ScanMax, Scan3D, DualScan) will remain the same.
  • Page 40 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual The survey wheel of the Palm XT can operate in three different positions: Standard Mode: Requires no special setup. Cross Polarization Mode: Highlights non-metallic objects, such as PVC, and de-emphasizes metallic objects like rebar and wire mesh. Side Car Mode: Transitions the survey wheel to the side of the antenna and allows it to fit into smaller spaces.

  • Page 41: Section 9: File Management

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 9: File Management This section contains instructions on data transfer and deletion. The File Management screen is accessed by going to Playback. Select Playback in any of the Scan Apps. You will see the screen at the right. Insert a USB thumb drive into the Mini XT.
  • Page 42 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual MN 70-813 Rev E...

  • Page 43: Chapter 2: Using Radan For Structurescan Mini

    Transferring the Files Copy the files you wish to view and/or process from the StructureScan Mini XT to the PC/Laptop. See Chapter 1, Section 8 for more information about transferring data from the Mini XT. MN 70-813 Rev E...

  • Page 44: Launching And Navigating The Software

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Launching and Navigating the Software Launching the Software Launch RADAN for StructureScan Mini by double-clicking the icon: The following screen is displayed: GSSI Button Ribbon Data Pane Properties Pane MN 70-813 Rev E...
  • Page 45 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Navigating Through the Main Screen 1. GSSI Button Clicking on the button allows you to: • Open a File • Print your data • Close a File • Close all open Files.

  • Page 46: Viewing And Processing The Data

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Viewing and Processing the Data Preparing the Software Before opening a file, you will need to set up some Global Settings located on the right side of the screen. If the Settings info (at right) is not shown, click the Global Settings button from the Other Windows section of the Home tab.
  • Page 47 Opening a File Click the Open icon located on the left side of the Ribbon. This will display a screen defaulted to the folder you set in the Global Parameters > Source Directory or click on the GSSI Button. •...

  • Page 48: Processing The Data

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Processing the Data Initial Process (automatically done by the software) Once a file is opened, the software will automatically process the original, raw data and create a new processed file so that it is viewable. The process done was Time Zero correction, Filtering, and Focus (Migration).
  • Page 49 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • The Properties Screen now displays Header information, which is information about the file. • You may click on the left and right arrows located at the bottom of the scale to toggle through the different profiles of your data. MN 70-813 Rev E...

  • Page 50: Ribbon Options

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Ribbon Options Home Ribbon Options File Open: Open another file. This will create another tab for that processed file. Click on the tab for the file you want displayed. That will be the current tab. Save: Save the file located in the current tab.
  • Page 51 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Click on Focus. Adjust the slider bar to increase or decrease the velocity (thus increase or decrease the dielectric) and click on the Test Icon. Continue to make adjustments and press the Test Icon until the hyperbolas become dots.
  • Page 52 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Data Windows Scope: Toggle on and off to display the O-Scope RADAR signal. (You may hold the left mouse button down on the data and move the mouse to view the RADAR signal at that position. 3D View: Toggle between displaying the 3D Grid view.
  • Page 53 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • Ground Truth: This will allow you to click on a target and enter the KNOWN DEPTH of that target. This will adjust the scale accordingly. To use, click “Ground Truth” than use your mouse cursor to left-click on something in the data.
  • Page 54 Continuous Page: If data takes more than one page, print data on multiple pages or one page • Load Logo: Load and print your own logo, or GSSI logo. Print Preview: Preview the printout on screen before actually printing the data.
  • Page 55 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Mouse Functions Before we begin with the 3D Volume Options Ribbon, there are mouse functions that can be helpful while displaying the 3D Grid. Right-click on the data area of the 3D Grid to: Display Gain: Adjust the contrast of the screen display.

  • Page 56: 3D Volume Options Ribbon

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual 3D Volume Options Ribbon X-Slice, Y-Slice, Z-Slice Drag the slide bar or press the - +to move the slices of the 3D Grid according. You may also animate the slices individually by clicking on the Animation icon. This icon will turn animation on and off. Thickness (Z-Slice): Adjust the thickness of the Z-Slice.

  • Page 57: Appendix A: The Dielectric Constant

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Appendix A: The Dielectric Constant What is it? The dielectric constant is number used in GPR to describe how fast the GPR energy moves through a non-metallic material. GPR waves move so fast (almost the speed of light) that it is not practical in most cases to use familiar units like miles or kilometers per hour, so we use the dielectric as an easier method.
  • Page 58 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual MN 70-813 Rev E...

  • Page 59: Appendix B: Data Interpretation And Examples Of Common Features

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Appendix B: Data Interpretation and Examples of Common Features This section presents some data images of some common targets. While the GPR cannot differentiate different types of metal (rebar vs. metal conduit vs. post-tensioned cables) on the basis of the signal alone, the depth, spacing, and direction of the object often gives us clues as to its identification.
  • Page 60 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Potential Void under Slab This image shows a wire mesh reinforced slab. Note the heavy black band below the wire mesh and shown by the orange arrows. The black band results from a pronounced high to low dielectric change as in concrete to air.
  • Page 61 If the PVC conduit were filled with wire or liquid the image would more closely resemble the rebar image since there is now less air by volume in the conduit. GSSI recommends exercising extreme caution when clearing out areas known or suspected to contain conduits. MN 70-813 Rev E...
  • Page 62 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Cinder Block/CMU The Mini XT is an effective tool for non-destructively checking for proper CMU construction. The data at the right was collected by running the Mini XT horizontally along a course of CMUs. The Mark button was pushed each time the center of the Mini XT (side laser) crossed the joint between two adjacent blocks.

  • Page 63: Appendix C: Technical Specifications

    Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Appendix C: Technical Specifications System Antenna Center Frequency 2.7 GHz Display Modes Linescan, Focus and 3D Data Storage 14.5 GB (340 - 2x2 3D images) Depth Ranges 4, 8, 12, 16, 20 inches (10, 20, 30, 40, 50 cm) Li-ion Battery, 2.5 hour runtime Battery (battery life dependent on level of display brightness and usage)
  • Page 64 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual MN 70-813 Rev E...

  • Page 65: Appendix D: Accessories

    Extension Pole Transit Case The pole transit case is for protecting the extension pole while travelling or not in use. It contains a custom foam insert to protect the pole from damage. The GSSI part number for the pole transit case is FGSSXT-POLECASE.
  • Page 66 StructureScan Mini XT as an additional purchase. You will need the handle removal tool (looks like a screwdriver) which was included with your StructureScan Mini XT. Note that the LineTrac module can only be used on the front of the Mini Make sure that the StructureScan Mini XT is powered off and that the battery has been removed.
  • Page 67 Using the tool provided, tighten the four screws and attach the base of the Palm XT to the StructureScan Mini XT. Power up the StructureScan Mini XT as normal and follow the steps in Section 8 to use the Palm XT. MN 70-813 Rev E...
  • Page 68 Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual MN 70-813 Rev E...

  • Page 69: Appendix E: Labeling

    Please contact GSSI if your labels have worn off and you require a replacement. FCC ID and Canadian ICES-003 This label is affixed to the bottom plate of a StructureScan Mini XT systems and contains the following information: FCC ID: The US Federal Communications Commission requires all domestic United States users to register their equipment with the FCC.

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