Smarttone Positive Identification - Fluke Networks Générateur de Tonalité Pro3000 Guide De L'utilisateur

Figure 2. P
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.
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 in the cable.
1
Put the toner's slide switch in the TONE position.
2
Connect the red test lead to a wire of the unknown cable (Figure 3).
Figure 3. Tracing Cables
3
Connect the black test lead to another wire in the cable, but 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.
4
Turn on the toner by pressing the button once for the continuous tone or
twice for the alternating tone.
2
3000 Toner
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Note
Note
5
To find the cable behind a wall, move the probe tip toward the wall where
you think the cable is located. The cable is behind the wall where the tone is
loudest.
Tracing Pairs
To identify a specific pair of wires within a multi-pair cable, do the following:
1
Put the toner's slide switch in the TONE position.
2
Connect the toner's red lead to one of the wires of the pair and connect the
black lead to the other wire.
3
Press the button once for the continuous tone or twice for the alternating
tone.
4
At the far end of the cable, use the probe to scan the cable's wire 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:
1
Spread the wires of the pair at the far end about 2 inches (5 cm) apart.
2
Move the probe tip slowly at a right angle to the wires (Figure 4). If the
tone's volume is HIGH over the first wire, LOW in the middle between the
bff02.eps 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 of the
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wire pair you are tracing within a multi-pair cable.
To use the SmartTone function (Figure 4):
1
Put the toner's slide switch in the TONE position.
2
Connect the toner's red lead to one of the wires of the pair and connect the
black lead to the other wire.
3
Press the button twice for the alternating tone.
4
At the far end of the cable, place the probe near the wires you are tracing.
Pick the pair that produces the loudest tone.
5
With the probe still on, short then open the two wires of the pair. 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 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).
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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.
PRO3000™ Toner and Probe Users Guide
Figure 4. Tracing Pairs
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