How To Change The Length Units; Line Verification; Vop; Using The Tdr On Multi-Wire Cables - Fluke TS54 TDR User Manual

TS54TDR/TS53 PRO Test Sets
Users Guide

How to Change the Length Units

The TDR shows length measurements in feet or meters.
To change the unit of measurement:
Q
1 Press .
M C
2 Press , press
TDR M
to , then press
D
3 Press to put the flashing cursor next to
M
then press .
L R
4 Press or to select feet (
5 To save your selection before you exit or go back
to the main menu, press
Saved
.
To go back to the previous menu, press
C D
press or until

Line Verification

The Line Verification function does tests for data and
voltage on the line when you press
senses data or voltage, it gives these responses:
•
Data Detect LOCK OUT
•
If there is voltage on the line, but no dial tone, the
display shows a voltage measurement
•
Active Telephone Line
line and there is no ANAC number stored in
memory location 9.
•
If there is a dial tone on the line and an ANAC
number in memory location 9, the test set
automatically dials the ANAC number and shows
the telephone number for the line. This helps you
identify the line so that you can make it inactive
before you do the TDR test again. Or, the number
can show you that you are connected to the
wrong line.
If Line Verification is off, and there is data or voltage on
the line, the display shows
Lockout
.
18
to put the flashing cursor next
again.
Units
ft m
) or meters ( ).
M
. The display shows
Q
Back
shows, then press
t
. If the test set
: There is data on the line.
: There is a dial tone on the
TDR Voltage Detect
To turn on the Line Verification function:
M
1 Press
C
2 Press
then press
D
3 Press
Verif
, then press
, R
4 Press or
5 To save your selection before you exit or go back
to the main menu, press
Saved
.
To go back to the previous menu, press
C
press
. Or,

VOP

M
.
To get the most accurate measurements of the length
of a cable or the distance to a fault, set the velocity of
propagation to the correct value for the cable.
See"Velocity of Propagation (VOP)" on page 24.

Using the TDR on Multi-Wire Cables

In a multi-wire cable, such as 4 wire telephone cable, 8
wire CAT-5 cable, 12-2 with ground ac wire, or several
THHN wires inside a conduit, a short can exist between
any of the conductors, including a shield or the
conduit. To detect the short, you must connect the test
set to the wires that are shorted. This means that to
fully test a multi-wire cable, you must test every wire
against every other wire including the shields and
conduits.
While a quick way to test many conductors against
conduit or shield length is to connect all the conductors
to one clip lead and the shield to the other lead, this
will reduce the impedance of the cable, and
measurements may fall below the test set's range. It is
more reliable to test the wires individually.
.
to put the flashing cursor next to
M
.
to put the flashing cursor next to
M Line Verif
to select
L On Off
to select or .
M
. The display shows
D Back
or until shows, then press
TDR
,
Line
.
Q
. Or,
M
.