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2.3 Examples of Typical Application
Take a 15-20ft piece of multi-core shielded cable with a
diameter of about 1.5mm and attach the cable to a wall.
Don't connect the cable to any power source. Make sure
the wall is accessible from both sides.Create a break in
one of the core wires about 5 ft. from the end and connect
it to the positive (+) end of the transmitter and the negative
(-) end of the transmitter to a suitable ground.Connect all
the other core wires not broken to the ground as well.
See figure 2-2 for a connecting example.
Turn on the transmitter. Set the transmitter power and
code if necessary by pressing the level select or code
select buttons. Press START/STOP on the transmitter to
start transmitting the signal through the cable. Move to
the opposite side of the wall and turn on the receiver.
Move the tip along the wall following the path of the cable
toward the break. The receiver the should produce a tone
to indicate it is receiving the signal from the transmitter.
As the tip of the receiver passes the break in the cable,
the tone should stop, indicating the receiver is no longer
receiving the signal from the transmitter.This will indicate
where the break in the cable is.
To further verify the precise position of the break,
press the manual button on the receiver and set the
sensitivity to its lowest setting while still receiving a signal
and move the tip along the cable again until it loses the
signal. This will give you a more precise location of where
the breakage is.
15
Make sure the
1.
ground is properly
installed before
measurement.
2. Adjust the
transmitting power
depending on the
depth of the cable
in the wall or the type
of cable being used.
To help, mark the
position of the break
on the opposite side
of the wall when
testing at the lowest
sensitivity receivable
in manual mode.
16
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