User's Manual

DIGITAL CONTROL INCORPORATED
50 DigiTrak Falcon
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F2
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Operator’s Manual
Preparing for Off-Track Locating
3. While still holding the receiver in the same orientation, step to the side another
predetermined distance (P2) farther away. Move the receiver forward and backward
until the ball jumps between the top and bottom of the screen, then mark this location.
4. While still holding the receiver in the same orientation, step to the side of the drill head
another predetermined distance (P3) farther away. Move the receiver forward and
backward until the ball jumps between the top and bottom of the screen, then mark this
location.
5. Connect points P1, P2, and P3 with a line. This is the locate line. Because the LL runs
perpendicular (at a 90° angle) to the transmitter when the transmitter is level, you can
determine the heading of the drill head. By comparing the signal strength at the
predetermined distances of P1, P2, and P3, as the drill head progresses, you can verify
it is moving away from or maintaining the intended bore path. It is important to monitor
the pitch of the transmitter to ensure the drill head is maintaining the desired depth.
6. As drilling continues, steer the drill head to maintain a constant signal strength at each
of the points P1, P2, and P3. If the signal strength decreases, the drill head is moving
away; if it increases, the drill head is moving toward the side position.
Differences in pitch and topology elevations will also affect the signal strength and LL
position as the drill head progresses.
Off-Track Locating
Bore path
Obstruction
Path around
obstruction
Predetermined
distances
P1 P2 P3
LL
Drill