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DIGITAL CONTROL INCORPORATED
Safety Precautions
and Warnings (Continued)
¾ Prior to the start of each drilling run, test the DigiTrak System to confirm that it is operating
properly and check that it is providing accurate drill head location and heading information (see
Receiver Section) and accurate drill head depth, pitch, and roll information with the Transmitter
inside the drill head.
¾ During drilling, the depth will not be accurate unless:
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•
•
•
•
•
The Receiver has been properly calibrated and the calibration has been checked for
accuracy so that the Receiver shows the correct depth.
The drill head has been located correctly and accurately and the Receiver is directly above
and parallel to the Transmitter in the tool underground or above the front negative locate
point (FNLP).
The Receiver height-above-ground or ultrasonic distance has been set correctly.
The Receiver is kept level.
¾ Interference can cause inaccuracies in the measurement of depth and loss of pitch, roll, or the
Transmitter’s location or heading. The locating operator should perform an electrical interfer-
ence check prior to drilling (see “Electrical Interference/Background Noise Check” in the Signal
Interference Section).
Sources of interference include traffic signal loops, invisible dog fences, cable TV, power
lines, fiber-trace lines, metal structures, cathodic protection, transmission towers, and radio
frequencies.
Interference with the operation of the Remote Display may also occur from other sources
operating nearby on the same frequency, such as car rental agencies using their remote
check-in modules, other directional drilling locating equipment, etc.
¾ Carefully review this Operator’s Manual and the DigiTrak training video and be sure you always
operate the DigiTrak System properly to obtain accurate depth, pitch, roll, and locate points. If
you have any questions about the operation of the DigiTrak System, please call DCI’s Customer
Service Department at 425-251-0559 or 800-288-3610 between the hours of 6:00 a.m. and 6:00
p.m. Pacific Time, Monday through Friday, and we will assist you in any way possible.
REMEMBER
If you are having difficulty on the job, call DCI (425-251-0559 or
800-288-3610) and we’ll attempt to help you solve the problem.
DigiTrak
®
Mark III Operator’s Manual vii