Schonstedt Instruction Manual

2

Introduction
In general, pipe and cable locators can operate in a variety of modes and
frequencies. The following is a brief description of the basic operating modes
supported by the Rex Pipe and Cable locator. In addition, the Rex Pipe and Cable
locator offers advanced features to suit almost any type of locating challenge, while
emphasizing portability, size, and convenience. The receiver collapses for portability
and expands for full functionality, and the transmitter packs up to 5 watts output
power, multiple frequencies, and an inductive antenna in a flat and lightweight
package that is similar to a notebook computer.
In the design of our locators, Schonstedt has incorporated more than sixty years of
experience in producing the world's finest locating products for aerospace, military
and infrastructure applications. All Schonstedt products are manufactured following
high standards of reliability, durability and performance.
For additional information on pipe and cable locating theory and techniques, check
the training section of our website at www.schonstedt.com/training.
Passive 50/60 Hz
In the passive mode, the transmitter is not used at all. Instead, the receiver
searches for an appropriate harmonic of 60 or 50 Hz signals (factory preset).
These signals are typically present in energized power cables, making it
possible to locate them without using a transmitter to impose a tracing signal
onto them.
Conductive
In the conductive mode, the transmitter imposes a signal of the selected
frequency onto the pipe or cable to be traced. It does so by making direct
contact with the pipe or cable at a point where the pipe/cable comes up to
the surface of the ground (a transformer box, a water hydrant, a telephone
switch box, a gas meter, etc.). The circuit is closed by providing a return path
with a stake that is buried in the ground near the transmitter.
Inductive Clamp
In the inductive clamp mode, the transmitter imposes a signal of the selected
frequency onto the pipe or cable to be traced. It does so by energizing a
clamp that is placed so that it is completely encircling the pipe or cable at a
point where the pipe/cable comes up to the surface of the ground (a