Fluke TS53 PRO, Руководство пользователя, Страница: 21 / 38

17
Visual ANAC Mode
Visual ANAC Mode
Note
Visual ANAC mode is for service provider use
only. Visual ANAC is not available in all regions.
A visual Automatic Number Announcement Circuit
(ANAC) gives the DTMF tones of the telephone number
of the line. In visual ANAC mode, the test set
automatically goes into mute mode and shows the
number on its display. If the test set is not in visual
ANAC mode, the ANAC speaks the number with a
digitized voice.
To get a visual response from an ANAC:
1 Connect the test set to a working telephone line.
2 Press
P
.
3 Press
R $
. The display shows
Dial ANAC
.
4 Dial the ANAC number.
After you dial the ANAC number and get a response,
the phone number of the line pair that the test set is
connected to is shown on the display. If the ANAC
response is more than 10 digits, the display shows the
last 10 digits. If the ANAC does not support visual
ANAC mode, it speaks the number with a digitized
voice.
If you do not press
R $
before you dial the ANAC
number, the ANAC gives a digitized voice response.
You can also use the speed dial function to get a visual
ANAC response. If you put the ANAC number into
location 9 in the Call Phonebook, the test set goes into
visual ANAC mode and dials the ANAC number when
you press
R 9
.
If you always want a digitized voice response when you
use speed dial for an ANAC number, put the number in
one of the other speed dial locations (1-8).
Using the TDR (TS54 TDR)
The TDR lets you measure the length of cables and the
distance to the first open or short on cables as long as
3,000 ft (914 m). See “"Time Domain Reflectometry
(TDR) Technology (TS54 TDR)" on page 25 for
information on how the TDR operates.
Note
The TDR operates only on cables that have two
conductors.
To use the TDR:
1 Optional: Change the length units, turn on the
Line Verification function, and set the velocity of
propagation to the correct value for the cable. See
"How to Change the Length Units", "Line
Verification", and “"VOP" below.
2 Press
Q
.
3 Connect the test leads to the cable.
4 Press
t
.
Below are examples of TDR test results:
TDR Results
Short at
1267
ft
There is a short across the two
conductors 1267 feet from the test
set.
TDR Results
Open at
2433
ft
The cable is 2433 feet long, or
there is an open in one or both of
the conductors 2433 feet from the
test set.
TDR Voltage
Detect
Lockout
There is data or voltage on the
line. The TDR does not operate on
an active line.