Fluke Networks PRO3000 Produktinformationen Seite 3

The polarity/continuity LED is just above the toner's slide switch. The
function of this LED depends on the toner's mode:

In continuity mode, it is a single-color LED (red), which
indicates whether or not there is continuity.
 In polarity mode, it is a dual-color LED (red and green), which
indicates the polarity of a DC- powered pair of wires (e.g., a
telephone line).
The toner can drive up to 10 miles (16 km) of 24 AWG twisted pair.
To preserve the 9 V battery, turn the toner off and put the slide
switch in the TONE position when the toner is not in use.
The toner's output signal decreases when the toner's battery is low.
Tracing Cables
Tracing cables lets you find the path of a cable run hidden inside or
behind a wall or otherwise unseen.
Because adjacent pairs may pick up some of the toner's signal,
you should work quickly to minimize the effect on other
services on the cable.
Put the toner's slide switch in the TONE position.
1
Connect the red test lead to a wire of the unknown cable (Figure 3).
2
Connect the black test lead to another wire in the cable, but
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preferably not of the same pair, or connect the black wire to
ground, if available. When tracing a shielded cable, connect the
red lead to the outer shield and the black lead to the center
conductor or to ground, if available.
Turn on the toner by pressing the button once for the continuous
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tone or twice for the alternating tone.
To find the cable behind a wall, move the probe tip toward the
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wall where you think the cable is located. The cable is behind the
wall where the tone is loudest.
Figure 3. Tracing Cables
Tracing Pairs
To identify a specific pair of wires within a multi-pair cable:
Put the toner's slide switch in the TONE position.
1
Connect the toner's red lead to one of the wires of the pair and
2
connect the black lead to the other wire.
Press the button once for the continuous tone or twice for the
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alternating tone.
Notes
Note
At the far end of the cable, use the probe to scan the cable's wire
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pairs by moving the probe's tip near each pair. You have found the
target wire pair when you find the pair with the loudest tone.
To further verify you have found the target pair you can use the
toner's SmartTone ™ function (see "SmartTone Positive Identification").
If you are beyond the range of SmartTone, try the following:
Spread the wires of the pair at the far end about 2 inches (5 cm)
1
apart.
Move the probe tip slowly at a right angle to the wires (Figure 4).
2
If the tone's volume is HIGH over the first wire, LOW in the middle
between the two wires, and HIGH over the second wire, then you
have located the target pair.
SmartTone Positive Identification
The P 3000 toner's Smart Tone function ensures positive identification
RO
of the wire pair you are tracing within a multi-pair cable.
To use the SmartTone function (Figure 4):
Put the toner's slide switch in the TONE position.
1
Connect the toner's red lead to one of the wires of the pair and
2
connect the black lead to the other wire.
Press the button twice for the alternating tone.
3
At the far end of the cable, place the probe near the wires you are
4
tracing. Pick the pair that produces the loudest tone.
With the probe still on, short then open the two wires of the pair.
5
A change in the tone indicates you have located the target pair. If
you don't hear a change in the tone, then pick a different pair and
try again until you find the pair that causes the tone to change.
The SmartTone function is available when the toner is in alternating
tone mode. SmartTone is intended for use on dry pairs of wires that
are un-terminated at both ends of the run. It is not intended to work
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on wires connected to DC power sources (e.g.,live telephone lines),
nor will it work on wire pairs that are carrying AC signals (other than
the toner's AC signal).
The SmartTone function works only if the toner's red lead is
connected to one of the wires of the pair and its black lead is
connected to the other wire of the pair.
SmartTone works on many types of wire pairs including twisted pair,
house wiring, and coax (the shield is one wire and the center
conductor is the other wire). SmartTone has a range of 2 miles
(3.3 km). Using this function on wire runs greater than 2 miles in
length may cause misleading results.
Toner and Probe Users Guide
Loud
Quiet
Loud
Figure 4. Tracing Pairs
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