Bedienungsanleitung Fluke networks TS22 Series (Seite 13 von 16) (Englisch)

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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:

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).

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.

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.

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Fluke networks TS22 Series Seite 13

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