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pg. 6

 

 
 
 

Take extra care when Insulation Resistance is being measured.  
There may be voltage applied to the line as high as 500 Vdc.  
Ensure you warn others when insulation Resistance is measured. 

Ensure that equipment is removed from the line and the test leads 
are disconnected before opening the case. Do not operate the 
equipment with the case open. 

Use only 9V alkaline batteries.  Ensure the battery is installed 
correctly. 

Replace the battery as soon as BATTERY FLAT is indicated. 

Remove the batteries if they are worn out or before storing your 
device; they can become hot and cause burns. 

Always remove old, weak or worn-out batteries promptly and 
recycle or dispose of them in accordance with Local and National 
Disposal Regulations. 

If a battery leaks, remove it, taking care to keep the leaked fluid 
from touching the skin or clothes.  If fluid from the battery 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 
manufacturer’s recommendations for clean-up. 

Breaking electrical connections may generate sparks. This 
instrument is not to be used in areas in which flammable gases 
exist, or may exist. 

Disconnect earphones before connecting probe test leads to the 
line. 

TX916 is suitable for telecommunications lines and is not rated for 
Mains use (>220Vac). 

This equipment must not be connected to mains supply circuits.  
Do not apply more than the rated voltages to the equipment. 

When connecting the test clips be sure to keep your fingers away 
from potentially live metal parts. 

Disconnect test leads before opening battery compartment.  Do not 
operate the equipment with the battery cover removed. 

Clean only with a damp cloth and detergent.  Do not immerse in 
water.  

To protect from electrical shock, only use the test leads provided. 

Do not use this device during electrical storms. 

 
 

 

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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