Topcon Motorgrader - Page 44

Operation
Motorgrader System Five Operator’s Manual
2-22
Working Window
Since the Sonic Tracker II is mounted to the mold board, as it raises or
lowers, the tracker measures exactly how far above or below the
desired grade reference it is. Built into the Tracker is an operational
zone, or Working Window, .2 feet above and below the grade
reference. The grade lights on the Sonic Tracker and Control Box
continuously display this grade information to the operator.
Figure 2-29.
S onic T racker II
. 2 '
.
2 '
B LI NK I N G U P ARR OW
B LI NK I N G U P ARR OW/O N G RAD E
O N G RAD E
B LI NK I N G D OW N ARR OW/O N G RAD E
B LI NK I N G D OW N ARR OW
C O AR SE
C O RR E C TIO N
( AU TO M A TI C )
FI N E
C O RR E C TIO N
( AU TO M A TI C )
N O C O RR E C TIO N
M AD E
( O U T OF
WO
RK I N G WI ND OW )
SLOW B LI NK I N G U P ARR OW
SLOW B LI NK I N G D OW N ARR OW
SOLI D U P ARR OW
SOLI D D OW N ARR OW