Depth scale Horizontal Position
1. Place the Sensor Head on the surface and press Start key on the
Display Unit or Enter key on the Sensor Head.
2. Move the Sensor Head forward.
3. Data scrolls on the screen from right to left.
4. PCD (Power Cable Detector) data is displayed as a red line
under the cross-section image.
5. DynaQ line is an indicator of data quality.
6. FINISH - Press Stop on the screen or the Enter key
on the Sensor Head.
ADJUST DISPLAY PARAMETERS - Use the menu options along the
bottom of the screen to change: Color, Filter, Gain, and Zoom.
To pinpoint the location
of an embedded object
move the Sensor Head
backwards.
A red vertical line
(corresponding to the
arrow at the center of
the Sensor Head) will
appear on the screen
marking the position of
the Sensor Head.
Line Scan Displays Cross-Sectional GPR Data - Get a quick idea of what`s in the concrete, locate rebar and current-carrying cables.
Start Up
Scan
Using tape, secure the plastic grid sheet
at the survey location.
Set your grid
parameters: grid
number, size and
resolution. Then
press Start.
Align the Sensor Head
so it is centered on Line
1 and the middle of the
wheels line up with the
start line on the grid.
1. Press Start on the Display Unit or Enter key on the Sensor Head.
The sensor will beep once to indicate the start of collection.
2. Move the Sensor Head at a steady pace in the direction of the arrows shown on the grid. Collection stops
automatically at the end of a line.
3. The GPR line appears on the left side of the screen. Underneath it is the Power Cable Detector (PCD) image in red,
indicating the possible presence of a current-carrying wire.
4. Collected line turns red on the grid image on the right side of the screen. The next line to collect is shown in white.
5. Normal resolution lines are collected every 4 inches (10 cm). For a high resolution grid, collect lines every 2 inches
(5cm); these lines are denoted with an H.
6. Continue until all the numeric (X) and alpha (Y) lines in the grid are collected.
7. Press Slice View on the screen, to process the grid data and create the depth slices.
Viewing Results
Depth slice images of the scanned area appear on the
right side of the screen. Slice up and down through the
depth slices by pressing the Depth –/+ buttons. This
increments 1 inch (25mm) at a time.
The left side of the screen displays one of the GPR grid
lines. Use the 4-way Navigation buttons to change the
alpha or numeric GPR line displayed.
2015-00041-03
Grid Scan
Scan
Displays Depth Slices - Better visualize embedded objects in an area. High resolution grids provide the best image quality.
Pinpoint Targets
To view the
PCD plan map
image, press
the PCD
button.
