Locating | ® |
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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.
FNLP
Receiver
FNLP
Axis Line (dashed)
Sited Between
FNLP and RNLP
FNLP
PLL
RNLP
Transmitter's Location
PLL
RNLP
PLL
RNLP
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Finding the Transmitter’s Location | Receiver Position for Measuring Depth of Transmitter | ||||||||
48 | DigiTrak® Mark III Operator’s Manual |