User's Manual

DIGITAL CONTROL INCORPORATED
DigiTrak Falcon
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F2
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Operator’s Manual 49
Off-Track Locating
Go watch some TV
You can find a training video on Off-Track Locating at www.youtube.com/dcikent.
Use off-track locating when it is not possible to walk above the transmitter due to a surface
obstruction or interference. Using the locate line’s perpendicular relationship to the
transmitter, it is possible to track the transmitter’s heading and also determine if it is
maintaining its intended depth. The off-track locating method is only effective when the pitch
of the transmitter is 0% (0°) and traveling under flat ground.
To explain how the off-track locating method works, consider the example of an obstruction
that is on the intended bore path, as shown in the figure below. The transmitter is about to go
under the obstruction.
1. Stop drilling and find the locate line (LL) of the transmitter by putting the line in the box.
2. While holding the receiver in the same orientation, step to the side until you reach a
predetermined distance (P1). Move the receiver forward and backward until the ball
jumps between the top and bottom of the screen, then mark this location.
Bore path
Obstruction
Path around
obstruction
Predetermined
distances
P1 P2 P3
LL
Drill