Copyright © 2016 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 and UtilityScan are registered trademarks of Geophysical Survey Systems, Inc.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Limited Warranty, Limitations Of Liability And Restrictions Geophysical Survey Systems, Inc. hereinafter referred to as GSSI, warrants that for a period of 24 months from the delivery date to the original purchaser this product will be free from defects in materials and workmanship.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Garantie limitée, limites de responsabilité et restrictions Geophysical Survey Systems, Inc, ci-après dénommé GSSI, garantit à l'acheteur original de ce produit que, pendant une période de 24 mois à compter de la date de livraison, ce dernier sera exempt de défauts de matériaux et de fabrication.
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.
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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 15th, 2002 register their equipment and areas of operation. It is required that you fill out this form and fax or mail to the FCC. Failure to do this is a violation of Federal law. 1.
Geophysical Survey Systems, Inc. 6. StructureScan™ Mini XT Manual Equipment Identification: Brand Name: Geophysical Survey Systems, Inc. Antenna Model No. (center frequency): List all antennas being registered. Model MINIXT 7. Frequency 2700 MHZ Receipt Date Of Equipment: Fax this form to the FCC at: 202-418-1944 Or Mail to: Frequency Coordination Branch, OET Federal Communications Commission 445 12th Street, SW Washington, D.C. 20554 ATTN: UWB Coordination Do not send this information to GSSI.
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.
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.
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...........................
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Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Chapter 1: Using the StructureScan Mini XT Section 1: Introduction Thank you for purchasing the StructureScan Mini XT by GSSI. StructureScan Mini XT is the very latest product from GSSI’s line of cutting-edge GPR concrete inspection tools. The Mini XT is designed with today’s busy concrete professional in mind. It’s a tool that packs a ton of simple to learn functionality into a ruggedly reliable package.
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Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 2: Getting Started 1 Remove any protective tape from the wheels. 2 GSSI recommends fully charging the batteries prior to use. 3 4 Insert a fully charged battery into the battery slot. The battery should be inserted with the small plastic tabs pointing down. Gently push the battery in until the plastic battery release clips on the Mini XT catch on the battery tabs. Push the Power Button to turn on the Mini XT.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual First Time Setup Note: The Mini XT incorporates a touch screen. You can use the handle keypad or touchscreen to access most of the menu items. 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.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 3: Using ScanEZ Mode Configuring the Mini XT Before collecting any data, you may want to configure your Mini XT. Choose ScanEZ from the App Carousel. 1 2 3 4 Choose Inspection Depth: Possible options are 4, 8, 12, 16, 20 inches or 10, 20, 30, 40, 50 cm. GSSI recommends setting the inspection depth a little deeper than required.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Understanding the Mini XT Screen File Information Bar Depth Scale Backup Cursor User Mark Hyperbola Battery/Storage Status Menu Carousel 5 6 If you haven’t already done so, pull trigger to begin collecting data and roll the Mini XT across the concrete. The data image will be displayed in real time. The project and file number will be displayed at the top-left corner of the screen.
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. • Mark: This will write a red-dashed user mark to the Backup Cursor location when the option is pushed. This is useful to note the location of something you want to remember.
Geophysical Survey Systems, Inc. 4 StructureScan™ Mini XT Manual Take a minimum of two survey lines in each direction and connect your marks to draw what is in the slab on the slab. Direction of steel 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.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Playing Back 2D ScanEZ Data 1 2 3 4 5 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. You can either click the Up and Down arrows or swipe the touchscreen to browse files.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 4: Using the Scan3D App Scan3D is used to collect and view sections of 3D GPR data. You can collect grids of four preset sizes: 1x1, 2x2, 2x4, and 4x4 feet (30x30, 60x60, 60x120, 100x100 cm). You can use one of the paper scan pads supplied by GSSI as a template, create your own, or even draw a grid on the survey surface.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Collecting a Grid 1 2 3 4 5 6 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. Using the handle keypad, click the arrow in the direction of Scan.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Recalling a Grid for Review 1 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). 2 Click Right to goto Playback Setup. 3 Click Right to goto Files. 4 5 6 Click Right to activate the file list and then Up/Down or scroll with your finger to line up the desired Grid file with the yellow selection arrow.
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. As you slice, note the slice depth information displayed above the grid view. You will see the Slice Top depth and Bottom depth.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 5: Using the ScanMax App ScanMax is a 2D data collection program. You will have much greater control over data collection parameters, gain, and filtering in ScanMax than in ScanEZ. Please note that ScanMax is accessible only when in the Standard or Advanced UI setting. When using ScanMax for the first time, you may want to set some overall, global settings in the menu carousel.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual • Laser: Toggles the front and side guide lasers on and off. • Sound: Sets the volume level of the Mini XT’s sound cues. • Manual Gain: Toggles manual gain control on and off. When set to Off you are able to toggle through seven different preset gain curves while collecting data. These are lettered A-F and are designed to accentuate different portions of the vertical scale.
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.
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. • Save Image: This will store a screen shot as a PNG image format. Each image will have the same name as the GPR data file.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT 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. LineTrac can only be used on the front accessory attachment point.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT 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. Note the absence of any large, standout peaks.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 6: Calibrating for Depth in the ScanMax App The Mini XT, like all GPR instruments, records the elapsed time between transmission and reception of the RADAR pulse. In order to produce an accurate depth, it is necessary to calculate the velocity of that pulse as it moves through the concrete. The ScanMax App has three tools available to assist in the Calibrate menu during data collection.
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. 1 2 3 4 5 Collect a section of data and back the Mini XT to the hyperbola representing the object to which you know the depth.
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. 1 2 3 4 Collect a section of data and back the Mini XT to your chosen hyperbola. Use your finger to position the horizontal crosshair at the top edge of positive wavelet (for metal objects).
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. DualScan is only available when the UI Mode is set to Advanced. DualScan works by selecting a reference file (called Base) and collecting new files to compare to the Base file.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Collecting Data If you already have a Base file, 1 2 3 4 Click Files to display the file selection screen. You will see the image at the right. Choose the desired base file and click Set as Base. A green check will appear next to the file entry. Click Scan Setup to return to the Scan Setup screen. You will see the name of the selected file displayed near the topleft as Base: FILENAME. Click Scan to begin collecting data.
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. 1 2 3 4 5 Click Playback Setup from the DualScan Main Menu screen. Next click Files from the Playback Setup screen. Click Right to activate the file list and scroll to the file list. Click the middle keypad button to select the first file. This will be the Base file.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Section 8: File Management This section contains instructions on data transfer and deletion. The File Management screen is accessed by going to Playback. 1 2 3 4 5 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. Note that the Mini XT will not accept an external hard drive. Click the Right arrow to access the file list.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Chapter 2: Using RADAN for StructureScan Mini Setting up Your Laptop/PC and Data Transfer Create folders on your PC/Laptop. A different folder should be created for each of your projects. To create a new folder, right- click on your Windows Desktop and select New > Folder. Give the folder a unique name. However, if you are comfortable with PCs and Windows, you can organize your folders however you wish.
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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. • Use Options to change the language • Exit RADAN for StructureScan Mini Software 2. Ribbon This area contains all the options and processes you can do with your data. This is also where you may open, save, or close a file.
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.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Current Display: • Reader: Opens the RADAN Reader display, which allows you to view already processed 2D data as profiles and 3D data as depth slices. The color table, color transform, and display gain can also be modified. If targets or picks were added in one of the other displays they can be displayed as well. Displayed data can be saved as .jpg images.
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).
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.
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. Close: Close the file located in the current tab.
Geophysical Survey Systems, Inc. 2 3 4 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. • The picture on the left has hyperbolas. Increase the velocity bar by sliding it to the right. This will automatically decrease the dielectric. • The picture in the middle has upside-down hyperbolas.
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. Other Windows Toggle On or Off different data property windows. File Header: Header information about the displayed file.
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. Usually this will be an embedded object, but a layer such as back of slab works also. A box will then pop up and you will enter in the known depth to that object.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Clipboard Copy: Click this to copy the current window display to the clipboard. This image then can be pasted to any other 3rd party software (PowerPoint, Word, etc.). Print Quick Print: Print the file as it is displayed in the linescan window. Setup: Configure the printout. • Scan Per Inch: Number of scans per inch. Setting this number higher will allow longer profiles to fit on a single page, but there will be a loss of resolution.
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. 1 Right-click on the data area of the 3D Grid to: a) Display Gain: Adjust the contrast of the screen display. b) Transfer: o None: Display normally. o Absolute: Change all to positive. o Negate: Change negative to positive and positive to negative.
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. View Options Targets: Toggle between displaying the targets. GPR Data: Toggle between displaying the data of the 3D Grid.
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. The range of values goes from 1 (air, the fastest) to 81 (water, the slowest).
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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. Welded Wire Mesh This image shows a section of 6” wire mesh.
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. While we do not know how thick the void might be we can tell the starting and ending point by locating where the black band starts and ends.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Empty PVC Conduit The hyperbola identified by the orange arrow is an empty PVC conduit above a row of rebar. Note that the dominate color for the PVC hyperbola is black while the rebar is white. The PVC wall is too thin for GPR to image so we are reflecting off of the air void within the conduit.
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. The marks show up on the right as the vertical red dotted lines. Between each pair of marks is one block.
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) Battery Li-ion Battery, 2.5 hour runtime (battery life dependent on level of display brightness and usage) Data Format RADAN .
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Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Appendix D: Accessories There are a number of accessories available for the StructureScan Mini XT. Accessories include extra batteries, replacement chargers, and replacement transit cases. These are offered as an additional purchase. Please contact your local representative or GSSI Sales for additional information at sales@geophysical.
Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual LineTrac XT LineTrac XT is a passive AC current detector available for 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 XT. 1 Make sure that the StructureScan Mini XT is powered off and that the battery has been removed.
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Geophysical Survey Systems, Inc. StructureScan™ Mini XT Manual Appendix E: Labeling The exterior caution and warning labels are reprinted here in order to comply with various international regulations. Please contact GSSI if your labels have worn off and you require a replacement.