Topcon Motorgrader - Page 48

Operation
Motorgrader System Five Operator’s Manual
2-26
If the Tracker is side shifted off a stringline, the Tracker's stopwatch
indicates a long time for the sound waves to come back. The Tracker
is out of the Working Window, and no On Grade correction signals
will be applied.
Figure 2-33.
S onic T racker II
T
STRINGLINE
REFERENCE
STOPWATCH
SLOW BLINKING
CORRECTION SIGNALS
On Grade
DESIRED
GRADE