If The Tdr Shows Unusual Or Unstable Length Measurements; Using The Toner (Ts54 Tdr); Finding A Cable - Fluke TS54 TDR User Manual

If the TDR Shows Unusual or Unstable
Length Measurements
Devices connected to the line can make the TDR show
unusual or unstable measurements. Such devices
include bridge taps, inactive telephone equipment, and
transformers.

Using the Toner (TS54 TDR)

The toner helps you identify wire pairs and find cables
in bundles, at patch panels, or behind walls. The toner
puts a signal on a wire pair, then you use an optional,
inductive probe to find the signal. The toner has five
different tones.
The SmartTone function helps you make sure you
correctly identify a wire pair. When you put a short on
the correct pair, the tone changes.
The toner does not operate on wire pairs that
have DC or AC voltage or on pairs that are
terminated.
The toner can cause interference on adjacent
wire pairs. To minimize problems with services
on those pairs, complete your work with the
toner quickly.
The toner uses a lot of battery power. To
preserve the life of the battery, turn off the
toner when you do not use it.
Notes
Using the Toner (TS54 TDR)

Finding a Cable

To find a cable:
1 Turn on the test set.
2 Connect the test set to one end of the cable (see
Figure 2).
For twisted pair wire, connect the red test lead to a
wire in the cable. Connect the black test lead to
another wire in the cable. If possible, connect to a
wire that is in a different wire pair, or connect to
ground. This increases the strength of the toner
signal emitted from the cable.
3 Make sure that the test set shows 0 VDC.
M D
4 Press , press
SmartTone M
to , press
turn on the toner.
If there is voltage on the line, the display shows
SmartTone Volt Detect Lock Out
not operate.
5 Use a tone probe to find the place where the tone
is the loudest.
6 To make sure you have found the correct cable,
put a short momentarily across a wire pair in the
cable (Figure 4). If the tone changes, you have
found the correct cable.
To turn off the toner, press
to put the flashing cursor next
M
, then press again to
, and toner will
M Q
or .
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