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pg. 5

 

 
 
 

2.  SAFETY INFORMATION 

To avoid injury read “Safety Information” and 
“Warnings and Precautions” before using this 
instrument 

 

Safe Working Practices 
Review the safety information and adhere to the safe working 
practices described in this manual and elsewhere. 

 

Protection may be impaired if the instruments are used for purposes 
other than described in this manual. 
 

The symbols used on the instrument and in this manual are

:  

 

 

 
Safety Information Warning,  
 Refer to Manual 

 

 

 
Conforms to European Union 
Directives 
 

 

 
Do not dispose of in general 
domestic waste.  Refer to local 
authorities for direction. 
 

 
 

Warnings and Precautions  

To

 avoid possible electric shock or personal injury, and to avoid 

possible damage to the instrument or to the equipment under test, 
adhere to the following practices: 

This equipment is to be used by trained technicians only.  Use 
caution when using this equipment.  Voltages in excess of 30Vac, 
42Vpeak or 60Vdc may be present on lines being tested.  These 
voltages pose a potential shock hazard. 

Before using the equipment inspect the case.  Do not use the 
equipment if it is damaged.  Look for cracks in the case or missing 
parts.  Pay particular attention to the insulation around the 
connectors. 

Inspect the test leads for damaged insulation or exposed metal.  
Check the test leads for continuity.  Replace damaged test leads 
before using the equipment. 

Do not use the equipment if it operates abnormally.  Protection 
may be impaired. When in doubt have the equipment serviced. 

Do not apply more than the rated voltages to the equipment. 

Use the correct connections and functions for your measurements. 

Содержание TX 916

Страница 1: ...pg 1 TX 916 LOOP a LINE Operator s Manual...

Страница 2: ...Short circuit without white wire Connect to Exchange mode Quiet Line 600 Termination mode Short circuit with white wire Open circuit mode Light LEDx6 Tone mode Speaker Battery Compartment Figure 1 1...

Страница 3: ...pg 3 mode Figure 1 2 Probe a FRONT VIEW b REAR VIEW c SIDE VIEW Probe Tip Open circuit mode Tone mode Short circuit with white wire...

Страница 4: ...SHORT CIRCUIT DETECTION 8 4 4 OSCILLATOR MODES 9 5 PROBE OPERATION 11 5 1 SIGNAL TRACING 11 5 2 MODE SELECTION 11 5 3 TONES 11 5 4 CONNECTED TO EXCHANGE 12 5 5 AUDIO BATTERY LEVEL INDICATOR 12 6 LINE...

Страница 5: ...the instrument or to the equipment under test adhere to the following practices This equipment is to be used by trained technicians only Use caution when using this equipment Voltages in excess of 30V...

Страница 6: ...ry comes into contact with skin or clothes flush skin with water immediately Before inserting new batteries thoroughly clean the battery compartment with a damp paper towel or follow the battery manuf...

Страница 7: ...nstrument loop insulation resistance resistance balance measurements and fault locating can be performed 3 1 BATTERY REPLACEMENT Both devices are powered by a 9 V alkaline battery IEC 6LR61 which can...

Страница 8: ...ration and should be replaced Figure 4 1 Light array indicating a FLAT b LOW c FULL battery level After indicating the battery level the OSCILLATOR enters TONE mode The light next to the symbol will f...

Страница 9: ...4 5 V DC to the cable pair to which it is connected This voltage is necessary for the OSCILLATOR to be able to detect a short circuit 4 4 OSCILLATOR MODES The OSCILLATOR has six operating modes The s...

Страница 10: ...e measured This termination is also used for a Three Wire RFL test refer to section 6 3 2 Three Wire Test Customer Exchange Open Circuit The OSCILLATOR tone generation is disconnected and the line is...

Страница 11: ...he case of TONE mode where it will remain powered for 2 minutes and then power down automatically 5 3 TONES There are four selectable OSCILLATOR tones available for use in pair identification they are...

Страница 12: ...tive Exchange voltage on the test lead s Red clip 5 5 AUDIO BATTERY LEVEL INDICATOR If the PROBE battery is almost flat the PROBE will emit a long and descending pitch screech whenever a key is presse...

Страница 13: ...ir carrying the OSCILLATOR tone signal Confirm the pair by selecting a different mode and checking that the OSCILLATOR s tone stops The PROBE s sensitivity volume can be adjusted by using the TONE key...

Страница 14: ...n them or both have fault resistance to ground If only one wire of the pair is faulty the Two Wire Method can be used The Three Wire test is performed as follows Connect the Blue Oscillator leads to a...

Страница 15: ...ircuit voltage 500 V dc Line Balance 54 pF black clip red clip 58 pF black clip ground plane 72 pF red clip ground plane Mode 3 Mode4 Short Circuit with or without ground Current consumption approx 0...

Страница 16: ...sonable normal usage as determined solely by Teletech Pty Ltd Items returned for repair or replacement shall be shipped with a copy of the dated invoice freight charges prepaid to Teletech Pty Ltd Uni...

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