Ditch Witch 8500 - Manual (Page 52)

8500 Tracking System Operator’s Manual
Tracking Concepts - 49
Theory of Operation
CMW
Drill-Thru
The tracker calculates the beacon’s current depth, horizontal distance to the tracker and the predicted
depth at the tracker position. The tracker allows you to drill toward, under and away from the tracker while
providing depth and horizontal distance. The horizontal steering guides the operator to the intended bore
path, assuming a straight line along the tracker.
Sample beacon positions and resulting horizontal steering correction arrows.
The horizontal beacon plane (plane extended out at each end) must pass below both pods of the tracker
for drill-thru and projected depth numbers to be valid.