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Set-up Transmitter either Inductively or Conductively
Inductive
Be aware of air coupling, the transmitted signal travelling
to the Receiver via the air, not the utility.
Conductive
Connect the ground plate/ground rod assembly to the trans-
mitter. Connect the red lead to the non energized utility. Con-
nect the black lead to the ground plate/ground rod. Place the
plate/rod at a 90 degree angle in reference to the utility. Be
sure not to place the wires over any other utility.
After transmitter set-up, move away from the point of con-
nection (or Induction) about 25 feet (8 meters). Sweep a
circle around the point of connection. Initially, disregard
the LEFT/RIGHT indicator and rely on the signal strength
readout. Make note of the high readings. These are areas
that need to be traced/examined in more detail.
Tracing
After locating the point(s) where the signal strength was
the highest, return to that/those points and start tracing
your utility. This is where the LEFT/RIGHT indicator is
very helpful. Swing the receiver from left to right and lis-
ten for the change of tone. When the target is to the RIGHT
of the receiver, the tone is pulsed tone. As the receiver
gets closer to the target, the pitch gets higher. When the
target is to the LEFT of the receiver, the tone is a continu-
ous tone. As the receiver gets close to the target, the pitch
also becomes higher. When the receiver is over the target,
OVER TARGET is displayed on the display screen, and the
tone is at its highest peak sound.
Depth Measuring
When an OVER TARGET response is displayed, position
the blade of the receiver directly over the utility and
place the tip on the ground. Hold the receiver steady,
press and hold the DEPTH pad. Depth will be measured
to the center of the utility.
INITIAL SCAN
8
OPERATING INSTRUCTIONS
The following instructions are designed for a safe and effective
method of line tracing and utility avoidance. Some of the steps
may not be applicable in all situations. The underlying guideline is
that operator safety must be maintained at all times. Use of
safety equipment, extra personnel, and up to date as-built plans
should be considered when necessary.