User's Manual
Table Of Contents
- Safety Precautions and Warnings
- Dear Customer:
- Introduction
- Receiver
- General Description
- Toggle and Trigger Switches
- Audible Tones
- Installing and Removing the Battery Pack
- Power On
- Power Off
- Main Menu
- Locate Mode
- Calibration Menu
- Height-Above-Ground (HAG) Menu
- Settings Menu
- Transmitter Selection Menu
- Drill DataLog Menu
- Pressure-Tension DataLog Menu
- Using the Keypad
- Display Screens
- Standard Receiver Display Screen Symbols
- Transmitter
- Remote Display
- Battery Charger
- System Setup
- Locating
- The Target Steering Function
- Appendix A: System Specifications and Maintenance Requirements
- Appendix B: Projected Depth Versus Actual Depth and the Fore/Aft Offset
- Appendix C: Calculating Depth Based on Distance Between FLP and RLP
- Appendix D: Reference Tables
- LIMITED WARRANTY
DIGITAL CONTROL INCORPORATED
DigiTrak
®
F5™ Operator’s Manual 97
Appendix C:
Calculating Depth Based on
Distance Between FLP and RLP
It is possible to estimate the transmitter depth should the information displayed on the receiver become
unreliable. This is only possible if you know the transmitter pitch and the positions of the front locate point
(FLP) and the rear locate point (RLP) and if the ground surface is level.
To estimate the transmitter depth, first measure the distance between the FLP and the RLP. The pitch of
the transmitter must also be reliably known. Using the Depth Estimation Table below, find the divider that
most closely corresponds to the transmitter pitch. Then use the following formula to estimate the depth:
Divider
RLPandFLPbetweenDistance
Depth =
For example, if the transmitter pitch is 34% (or 18.8°) then the corresponding divider value (from the
table) is 1.50. In this example, the distance between the FLP and the RLP is 11.5 ft (3.5 m). The depth
would be:
7.66
1.50
ft 11.5
Depth ==
ft or approximately 7.7 ft (2.35 m)
Table C1. Depth Estimation Table
Pitch ( % / ° ) Divider Pitch ( % / ° ) Divider Pitch ( % / ° ) Divider
0 / 0.0 1.41 34 / 18.8 1.50 68 / 34.2 1.74
2 / 1.1 1.41 36 / 19.8 1.51 70 / 35.0 1.76
4 / 2.3 1.42 38 / 20.8 1.52 72 / 35.8 1.78
6 / 3.4 1.42 40 / 21.8 1.54 74 / 36.5 1.80
8 / 4.6 1.42 42 / 22.8 1.55 76 / 37.2 1.82
10 / 5.7 1.42 44 / 23.7 1.56 78 / 38.0 1.84
12 / 6.8 1.43 46 / 24.7 1.57 80 / 38.7 1.85
14 / 8.0 1.43 48 / 25.6 1.59 82 / 39.4 1.87
16 / 9.1 1.43 50 / 26.6 1.60 84 / 40.0 1.89
18 / 10.2 1.44 52 / 27.5 1.62 86 / 40.7 1.91
20 / 11.3 1.45 54 / 28.4 1.63 88 / 41.3 1.93
22 / 11.9 1.45 56 / 29.2 1.64 90 / 42.0 1.96
24 / 13.5 1.46 58 / 30.1 1.66 92 / 42.6 1.98
26 / 14.6 1.47 60 / 31.0 1.68 94 / 43.2 2.00
28 / 15.6 1.48 62 / 31.8 1.69 96 / 43.8 2.02
30 / 16.7 1.48 64 / 32.6 1.71 98 / 44.4 2.04
32 / 17.7 1.49 66 / 33.4 1.73 100 / 45.0 2.06