Schonstedt Rex Lite, User Manual

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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
Lite Pipe and Cable locator. In addition, Rex Lite offers advanced features at an affordable
price, emphasizing portability, size, and simplicity. The receiver collapses for portability
and expands for full functionality; the transmitter offers a main frequency (82 or 33 kHz,
factory set) plus a second 512 Hz frequency, and an inductive antenna in a flat and
lightweight package.
Schonstedt has incorporated more than sixty-five years of experience in producing
products for aerospace, military and infrastructure applications in the design of our
locators. Schonstedt manufactures all products 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
The transmitter is not used in passive mode. 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 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.). By providing a return path, with
a stake that buried in the ground near the transmitter, the circuit is closed.
Inductive Clamp
In 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 transformer box, telephone switch box, gas meter, etc.). The
clamp then induces a current onto the pipe or cable. In this mode, it is
not necessary to provide a return path for the induced current to the
transmitter. The induced current will travel on the pipe or cable for a
certain distance, making it possible to trace it.