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6 Line Scan
Line Scan mode allows the operator to acquire data along a straight line and examine it as a
cross-section image. The operator can locate a feature and easily back-up and mark the
location of that object on the ground. Line Scan mode can also be used to get accurate depth
measurements.
Ensure you are in the appropriate project before entering this mode.
From the main screen, press the Line Scan button; you will see the screen shown in Figure 6-1.
The GPS Status indicates which GPS is currently selected, as well as the quality of the GPS
signal, which is based on the number of satellites that it sees. The chart below explains what
the colours and bars mean:
Note that if you select Internal GPS, it does NOT position any line scans in MapView; only the
External GPS will do this. Ensure that you have the right GPS selected prior to your survey.
6.1 Selecting a line
To select the desired line, press the + and - buttons under Line Number on the bottom of the
screen. Alternatively, pressing the line number button itself will show the screen in Figure 6-3.
From here, you can go directly to any line number. If the line number is white, then that line is
empty, whereas lines that already contain data are shown in red.
Figure 6-1: Preparing to Line Scan
Indicator Color
# of bars
Red
Orange
Green
Green
Green
# of Satellites
1
4
2
5
3
6,7
4
8,9
5
10+
51
Line Scan
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