System Overview
Topcon Paver System Five Operator’s Manual
1-4
Sonic Tracker II
The Sonic Tracker II™ (Figure 1-4) measures and controls the
elevations of the screed. A transducer, located in the bottom of
the Sonic Tracker II™, generates sound pulses like a speaker
and listens for returned echoes like a microphone. The Tracker
measures the distance, and controls grade from a physical grade
reference, such as a curb, stringline, or existing road surface. A
bail is used to compensate for rapid air temperature changes. In
paving applications a bail should always be used.
The Sonic Tracker II attaches to the system through one quick
connect cable and attaches to the machine with a single bolt. At
the end of the day, Sonic Tracker II should be removed for
proper storage in the carrying case.
Figure 1-4. Sonic Tracker II
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