Extech Instruments CLT600, User Manual, Page: 5 / 30

Introduction 1
Thank you for selecting the Extech CLT600 Cable Locator and Tracer. The
system allows you to easily locate cable faults, diagnose and trace cables and
circuits, test AC outlet wiring, detect faults in floor heating systems, perform
non-contact voltage detection on energized circuits, locate fuses or breakers
on panels, and more.
The CLT600 includes a Transmitter that can measure voltage and inject sig-
nals through cables or pipes, and a Receiver for tracing the transmitted sig-
nals. The Receiver also detects voltage in the non-contact voltage detection
mode.
These instruments are shipped fully tested and, with proper use, they will pro-
vide years of reliable service. Please visit our website (www.extech.com) for
additional information including the latest version of this User Manual and
Customer Support.
1.1 Transmitter Features
• Locates and identifies powered and de-energized cables and individual
conductors.
• Measures voltage from 12 V ~ 450 V AC / DC using the supplied test leads.
• Transmits high frequency signal through wires or pipes.
• Selectable transmission power level setting (1 ~ 3).
• Selectable transmission signal codes.
• Transmission power level bar graph indicator.
1.2 Receiver Features
• Identifies and traces powered or de-energized wires and cables.
• Traces signal sent from Transmitter.
• Displays the Level setting, Code, and strength of detected signal.
• Bar graph and variable tone indicate detected signal strength.
• Auto and Manual signal detection modes.
• Selectable Sensitivity (8 levels) in Manual mode.
• Non-contact voltage detection.
• Warning display and audible tone when voltage is detected.
1.3 Common Features
• LED Worklights.
• Backlit display.
• Silent mode of operation with button beeper and frequency tone disabled.
• Automatic power off (APO).
#NAS100035; r. AA/71038/71038; en-US 1