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Smart Systems User’s Manual Version 1.1
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Start of Section Indicator
Any time the Start button is pressed, the current date and time are written vertically on
the screen to indicate the start of a new section (see Section 5.5.1 on how to set time
and date on the DVL). The position indicator is also reset to zero. The current date and
time can be recorded in a field notebook along with the survey location to help the user
organize where each section of data was collected (Figure 5-2).
Figure 5-2: Example field notes
Fiducial Markers
A fiducial marker is text written vertically on the section at a specific position during data
acquisition. Adding these markers during data acquisition is useful for recording
significant positions or the positions of surface objects encountered during the survey.
The position and name of the object encountered at each marker can be recorded in a
field notebook. Then, when the data are reviewed, these markers are visible right on the
data section and can assist with data interpretation.
A fiducial marker is activated by pressing the A button on the DVL keypad during data
acquisition.
Smart Handle systems : On Smart Handle systems, it is also possible to add a fiducial
marker by quickly pressing the button on the Smart Handle during data acquisition.
The first time the A button (or Smart Handle button) is pressed, the text “Marker 1” will
be written to the screen at the current position. The marker number will then increment
each time it is pressed, for example, Marker 2, Marker 3 etc (see Figure 5-1).
Note that it is possible to automatically place a dashed vertical line at every position
label (see Section 5.5.1 – Odometer Markers).