User's Manual
Table Of Contents
- Important Safety Instructions
- Getting Started
- Receiver
- Receiver Menus
- Locating Basics
- Advanced Locating
- Transmitter
- Appendix A: System Specifications
- Appendix B: Receiver Screen Symbols
- Appendix C: Projected Depth Versus Actual Depth and the Fore/Aft Offset
- Appendix D: Calculating Depth Based on Distance Between FLP and RLP
- Appendix E: Reference Tables
DIGITALCONTROLINCORPORATED
DigiTrak Falcon F5
®
Operator's Manual 53
1. Obstruction
2. Bore path
3. Path around obstruction
4. LL
5. Predetermined distance 1
6. Predetermined distance 2
7. Predetermined distance 3
8. Drill
Preparing for Off-Track Locating
3. 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.
4. 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 (to the left in the
image below); if it increases, the drill head is moving closer to the side position (to the right).
Differences in pitch and topology elevations will also affect the signal strength and LL position as the
drill head progresses. Using three (or more) off-track points gives you more information to help
recognize the potential adverse effects of interference at any one point.