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.
Connect 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 util-
ity. This is where the LEFT/RIGHT indicator is very helpful.
Swing the receiver from left to right and listen 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 continuous 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 guide-
line 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.
