User's Manual

DIGITAL CONTROL INCORPORATED
48 DigiTrak Falcon
™
F5

Operator’s Manual
Effects of Depth, Pitch, and Topography on Distance Between FLP and RLP
The deeper the transmitter is, the farther apart the FLP and RLP will be. The distance
between the FLP and RLP with respect to the location of the LL is also affected by transmitter
pitch and the topography.
When the transmitter pitch is negative, the FLP will be farther from the LL than the RLP.
When the pitch is positive, the RLP will be further from the LL than the FLP. If the ground
surface or topography slopes significantly, the locations of the FLP and RLP will also be
affected with respect to the LL even if the transmitter itself is level.
Effect of Pitch on Distance Between FLP, RLP, and LL
For a detailed explanation of how to track the transmitter when it is steep and deep, read the
information provided in Appendix C: Projected Depth Versus Actual Depth and the Fore/Aft
Offset on page 77.
To calculate depth (for comparison to the receiver’s depth reading) using the distance
between the locate points and the pitch of the transmitter, see Appendix D: Calculating Depth
Based on Distance Between FLP and RLP on page 82.
RLP
LL
FLP
Surface of
ground
Drill rig
Bore path
Transmitter at
negative pitch
30°
RLP
FLP
Drill rig
Bore path
Transmitter
Bird's-eye view
(looking down)
Side view
LL
40°