System Overview
Topcon Paver System Five Operator’s Manual
1-6
Smoothtrac Sonic Averaging System (SAS)
The Smoothtrac® SAS (Figure 1-6) is an elevation control
system that combines multiple sonic trackers to calculate an
average of the physical reference. Each tracker sends its
distance measurement to the Control Box which then averages
those measurements and sends a correction signal to the tow
point cylinder. The Smoothtrac replaces the mechanical ski that
drags on the ground.
The Smoothtrac connects to the Control Box through the
tracker cable.
Figure 1-6. Smoothtrac Sonic Averaging System (SAS)