User's Manual

GPR4 Concrete Scanner

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User Manual

000002

000021

Earth Science Systems, LLC

February

2019

Page 14 of 28

The GPR4 Record tab also has buttons for saving the B-scan image and generating

a short report . The image can be saved as a PNG, BMP, or JPG file. The report will

be saved as a PDF file, and will contain the survey metadata and the B-scan image.

7. Before beginning a survey, it is important to capture information about the jobsite. Press

the Jobsite information button to bring up the dialog shown in Figure 6. The

information entered into this dialog will be listed in any reports that will be generated by

the software. To type into dialog field, click on the field to place the cursor, then press

the icon on the taskbar to bring up the keyboard.

a. Enter the Project Name, Site Location, Site Description, Operator, Survey Mode,

Notes, Service Provider, and Equipment Model. The Date Recorded and Time

Recorded fields will be updated automatically.

b. Map Frame Parameters Select the distance Units (feet or meters). The Latitude,

Longitude, and Elevation parameters will be updated automatically once the

survey begins using the GPS sensor in the sensor unit. The Magnetic

Declination and Map System fields are not used with the Pavement Scanner.

c. Local Frame Parameters Select the distance Units (feet or meters). Enter the

bearing of the first survey line in the Line 1 Azimuth field. The software will use

this value to correctly orient images on maps that are exported as KMZ or HTML

files.

8. Move the scanner to the start position of the line. Press the Previous line button

until the proper line number is displayed at the top of the screen. This action can also be

accomplished by pressing the rocker button on the radar unit to the left momentarily.

Each time this button is pressed, the system runs through a line initialization sequence

which tasks a few seconds. When the user hears an audible beep from the tablet, the

initialization sequence has completed. Therefore, users should wait until the audible

beep is heard before another line request.

9. The GPR data can be recorded for later playback and examination if desired. When

locating intersecting conduits, some users may choose not to record the data. Select

File, New, and then choose a location and name for the database file. When ready to

begin the survey, press the Record data button . This action can also be

Figure 6. Jobsite information dialog.