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Fluke networks TS22 Series Manual

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9
Maintenance
Line Monitoring
Caution
When testing circuits which are relatively
close to the battery source, the clicks may be
loud enough to cause acoustical shock if the
receiver is held tightly against the ear.
The TS22 Series Test Sets are designed to
rest comfortably on the shoulder with the
receiver away from the ear. They should be
used in this position when listening for
clicks.
Set the TALK/MONITOR switch to M and connect test
leads to circuit under test. Monitoring may now be
done without disrupting traffic. The high impedance of
the TS22A Test Set prevents the spiking of data traffic.
Troubleshooting
The following troubleshooting procedures are based
largely on the click heard when the two test leads on
are placed on battery and ground, or across a charged
capacitor. These clicks and other sounds from the
receiver can help you locate open circuits, shorts,
crosses, and grounds:
1
To locate a short circuit, open one side of the line
and place the TS22 or TS22A Test Set in the loop –
one test lead to each side of the opened line. On
the Central Office (CO) side of the fault, a loud
CLICK will be heard; on the field side of the fault,
NO CLICK will be heard. The TS22 and TS22A Test
Sets should be in the Monitor mode (with or
without the amplified speaker on).
2
Locating an open circuit is accomplished by
bridging the TS22 or TS22A Test Sets across the
circuit – one test lead on Tip, the other on Ring.
Moving away from the CO, the fault is located at
the point the loud CLICK disappears.
3
Continuity of each side of the loop may be verified
by placing one of the line leads on a local ground
and the other on the conductor in question. On a
good Ring conductor, a CLICK will be heard; on a
good Tip conductor, an inductive HUM will be
heard (due to the difference in ground potential
between the CO ground and the local ground).
Maintenance
Warning
Disconnect clips from any metallic
connections before performing any
maintenance. Read all instructions
completely and understand possible hazards
to end user if repairs are not performed
properly.
Batteries are hazardous to handle. Do not
allow the terminals to be shorted together.
Severe burns or explosion can result if not
handled properly. Dispose of battery
properly to ensure contacts cannot short.
Disposal may be restricted by local laws.
Caution
Do not use CRC Cable Clean
®
or any similar
chlorinated solvent on the test set. Doing so
will damage the test set.
Replacing the Battery
Warning
When not in use, the 9 V battery in the TS22
Series Test Sets should be changed once a
year to prevent the 3 V lithium battery from
draining.
Warning
When your 9 V battery is low your
speakerphone will no longer work. You
should replace your 9 V battery with a new
battery immediately as to not drain the 3 V
lithium battery.
… 13 …


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