Product Manual

5
8
TW-82 TRANSMITTER
WARNING: Do not handle output leads unless power is off.
ELECTRIC SHOCK HAZARD: Servicing to be performed by
qualified personnel only.
NEVER connect conductive cables to an energized power
line.
Low Battery Power-Down Warning
When the Transmitter batteries are near the end of their
useful life, the Transmitter will warn the operator before
shutting down.
Five minutes before shutting down, the Transmitter will
alternately stop and start transmitting at approximately one-
second intervals. The operator using the Receiver, even at a
distance from the Transmitter, will notice the signal turning
on and off before the power turns off completely.
Accessory Output
1. Flip up the black protective cover to expose the Accessory
Output.
2. Plug in the Cable Jack for conductive tracing.
When the conductive tracing cable is connected, Signal
Current will be displayed. The Signal Current Bar Graph
shows the quality of the connection.
Automatic Load Impedance Matching adjusts output to
provide full rated power over a wide range of loads (e.g.
utility types and conditions). It is tolerant of both dry
(high resistance) and shunted (low resistance) ground
connections.
The Transmitter has a built-in antenna for inductive
locating. When the Cable Jack is not connected, the inductive
antenna automatically engages and begins transmitting.
When locating inductively, the Signal Current Bar Graph
will not be displayed, as there is no conductive trace load to
be measured.
PITCH INCREASES
AS YOU APPROACH THE UTILITY
HIGHEST PITCH & VOLUME
DIRECTLY OVER UTILITY
CONSTANT
PITCH BEYOND 45°
CONSTANT
PITCH BEYOND 45°
45°
VOLUME DECREASES WITH DISTANCE FROM UTILITY
TW-82 RECEIVER
Display - Continued
2. Battery Strength: When battery life
declines to less than 1 hour (estimated)
of operation the battery indicator outline
will be illuminated with no segments.
When the batteries reach the end of their
useful life, the screen will go blank and the
battery icon will flash before the Receiver shuts off. Expect about
60 hours of battery life from a set of two D-cell alkaline batteries.
3. Left/Right
& Over-Target: These indicators show your position relative to
the center of the electromagnetic field.
Move to Move to You are over
the left the right the target
Audio: When you move within a 45º angle of the center of the
electromagnetic field, the audio pitch will change.
The pitch increases as you approach the utility and is highest
over the top of the utility. Outside the 45º zone, the pitch and
volume do not change.
When you are standing to the right of the utility, you will hear a
constant tone, and to the left, a pulsating sound.
4. Azimuth: These arrows indicate the utility’s path relative to
your position. When you are close
to, or over, the suspected
target, rotate the device
and notice the arrows.