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Fluke networks TS23 PRO Manual

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9
How to Turn the Test Set On and Off
How to Turn the Test Set On
and Off
To turn on the test set, press Q. To turn off the test
set, hold down
Q for 3 seconds. To set the time
period for the automatic shut-off function, see "Test
Set Timeout" on page 12.
Automatic Power-Down
To save battery power, the test set automatically turns
off after 2 minutes of inactivity. The timer starts again
when you press a key or when the test set is in Monitor
mode and receives a call.
How to Use the Monitor and
Talk Modes
The test set has two basic modes of operation: Talk
mode and Monitor mode. Talk mode is used for off-
hook operations (such as dialing verification, automatic
number identification, and audio quality verification).
Monitor mode is for audio monitoring of the Tip and
Ring pair while on-hook. In Monitor mode, the test set
has a high input impedance. This reduces the possibility
of disruptions to conversations or data while you
monitor the line.
Warning
When testing circuits that are close to a
battery source, clipping onto a line may
cause loud pops in the receiver. Holding the
receiver tightly against your ear may cause
acoustic shock. The test set is designed to
rest comfortably on the shoulder with some
space between the receiver and the ear. It
should be used in this position when
working close to a battery source.
Shorting the Tip and Ring leads together
while connected to a data line will disrupt
data on the line.
Monitor Mode
To put the test set in Monitor mode, press Q.
In Monitor mode, the test set is always on-hook. The
test set draws no direct current from the line and it
transmits no signals to the line. In this mode, the test
set has a high ac input impedance. This reduces the
possibility of disruptions to conversations or data while
you monitor the line. You can use either the handset
receiver or the speaker to monitor a line.
To use the speaker to monitor the line, press
s. This
disables the handset receiver and sends all audio
signals to the speaker. Two volume levels are available.
Press
v to toggle the volume level. Press s
again to turn off the speaker and monitor signals
through the handset receiver.
In the Monitor mode, the test set is typically used for
one or more of the following procedures:
•
Verification that a line is idle when looking for a
line to borrow
•
Listening for noise on the line
•
Hunting for tracer tones
•
Measuring the dc voltage on the line
Talk Mode
To select Talk mode, press P. When off-hook, the
test set operates like a standard telephone and is
typically used to verify the proper operation of a voice
telephone line or to establish temporary
communications on a “borrowed pair”.
Low Voltage Lockout
If you press
P, and the test set sees 4 V or less, the
TALK LED is red and the test set will not go off-hook.
… 13 …


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