User's Manual
Table Of Contents
- Mark III Directional Drilling Locating System
- Table of Contents
- Table of Contents (Cont.)
- Table of Contents (Cont.)
- Safety Precautions and Warnings
- Safety Precautions and Warnings (Continued)
- Dear Customer:
- 3-3000-00b-F.pdf
- 3-3000-00c-F.pdf
- Receiver
- Display Window Icons
- On/Off
- Receiving the Transmitter’s Signals
- Clicking vs. Holding the Trigger
- Changing the Receiver’s Channel Setting
- Changing the Depth Measurement Units (English vs. Metric)
- Battery Status Display for Receiver and Transmitter
- Warning Tones for Transmitter Overheat
- Ultrasonic Function
- Calibrating the Receiver
- Using Depth Antenna Plumb Line to Mark Locate Points
- Finding Firmware Version
- 5.0 Series Firmware Functions
- Receiver
- 3-3000-00d-F.pdf
- 3-3000-00e-F.pdf
- 3-3000-00f-F.pdf
- 3-3000-00g-F.pdf
- 3-3000-00h-F.pdf
- 3-3000-00i-F.pdf
- 3-3000-00j-F.pdf
- Locating
- Locating Mode
- Locate Points (FNLP & RNLP) and Locate Line (PLL)
- Handling the Receiver
- Distance Between FNLP and RNLP Due to Depth, Pitch, and Topography
- Using Plus/Minus Indicators for Locating
- Locating the Transmitter from the Drill
- Locating the Transmitter from the Front
- Method for Confirming Position
- Locating on the Fly
- Off-Track Locating
- Splitting the Front and Rear Negative Locate Points
- Four-Turn Technique
- Calculating Depth Based on Distance Between FNLP & RNLP
- Running off Pitch or Calculating Depth from Pitch
- Transmitter’s Signal Shape
- Antenna Configuration
- Signal Reception
- Front and Rear Negative Locate Points
- Positive Locate Line Above Transmitter
- Locating
- 3-3000-00k-F.pdf
- 3-3000-00l-F.pdf
- 3-3000-00m-F.pdf
- 3-3000-00n-F.pdf
- 3-3000-00o-F.pdf
- 3-3000-00p-F.pdf

Locating
®
Finding the Transmitter and Its Depth
7. While standing on the FNLP facing the drill, it is possible to “sight in” or align the FNLP with the
RNLP. This axis line is at a 90° angle (perpendicular) to the PLL. Where this axis line crosses the
PLL is where the transmitter will be found, below ground surface.
Take the receiver to the transmitter’s location and measure the depth of the transmitter. The receiver
must be parallel to the transmitter when it is directly above it to get an accurate depth. It does not
matter if the receiver faces the drill or faces away from the drill. The receiver may either be held or
set on the ground to find the depth, but be sure the ultrasonics are set correctly (see “Ultrasonic
Function” in the Receiver Section). Do not hold in the trigger.
It is usually preferable to maintain separation between the receiver and the ground to minimize
underground interference sources. Setting the receiver on the ground is more likely to result in
inaccurate depth information in most situations.
RNLP
FNLP
PLL
Drill
RNLP
FNLP
PLL
Drill
Receiver Facing Toward Drill Receiver Facing Away from Drill
Receiver Position for Measuring Depth of Transmitter
Receiver
RNLP
FNLP
Transmitter's
Location
PLL
Axis Line (dashed)
Sited Between
FNLP and RNLP
Drill
Finding the Transmitter’s Location
48 DigiTrak
®
Mark III Operator’s Manual