Sensors & Software PDP1000, User Manual

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PDP User's Guide PDP Collection Software
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Profile mode incorporates a back-up feature (only in odometer mode) to enable you
to accurately locate anomalous areas. After acquiring some data, pull the cart
backwards. A red vertical line appears over the data. As you pull the cart
backwards, the vertical line moves to mark the current location of the PDP sensor
(Figure 4-18). This can be lined up with any readings on the screen to see where
they occurred, provided you moved forwards and backwards in a straight line.
Figure 4-18: Showing the back-up arrow
To put a flag on the screen to mark this area, touch the flag button at the bottom of
the screen. A number flag is inserted at that point (Figure 4-19). Flags are
sequentially numbered, so multiple flags can be added on a line. It is
recommended to use flags to mark locations of cores, or other surface features,
such as pavement joints for example. The flag numbers reset on each new line.
To resume data collection, move the system forward along the same path. Once
you reach the point where you initially started backing-up, the system will continue
acquiring new data.
The < and > buttons allow you to scroll left and right to view data that is not
currently on the screen.
The + and - buttons allow you to zoom in and out on the horizontal scale.