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TELETECH TX 916 Operator's Manual

Loop a line
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TX 916
LOOP a LINE
Operator's Manual
pg. 1

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Summary of Contents for TELETECH TX 916

  • Page 1 TX 916 LOOP a LINE Operator’s Manual pg. 1...

  • Page 2: Physical Description

    1. PHYSICAL DESCRIPTION Figure 1-1 Oscillator Hole for carry lead Short circuit without white wire Quiet Line - 600 Ω Termination mode Connect to Exchange mode Short circuit with white wire Open circuit mode Light (LEDx6) Tone mode (a) FRONT VIEW (c) TOP VIEW Speaker (b) REAR VIEW...
  • Page 3 Figure 1-2 Probe Probe Tip mode Open circuit mode Short circuit with white wire Tone mode (a) FRONT VIEW (b) REAR VIEW (c) SIDE VIEW pg. 3...

  • Page 4: Table Of Contents

    TABLE of CONTENTS PHYSICAL DESCRIPTION ..........2 SAFETY INFORMATION ..........5 INTRODUCTION..............7 3.1. BATTERY REPLACEMENT ........7 3.2. TEST LEADS.............7 OSCILLATOR OPERATION ..........8 4.1. OSCILLATOR POWER UP ........8 4.2. OSCILLATOR POWER OFF ........8 4.3. CABLE SHORT CIRCUIT DETECTION ....8 4.4. OSCILLATOR MODES ..........9 PROBE OPERATION ............

  • Page 5: Safety Information

    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.
  • Page 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.

  • Page 7: Introduction

    3. INTRODUCTION Teletech’s TX916 Loop-a-Line consists of two battery operated devices known as the PROBE and the OSCILLATOR. Together these devices are used by the communication technician to aid in telephone installation and cable fault location and repair. A communication technician can work unassisted by remotely...

  • Page 8: Oscillator Operation

    4. OSCILLATOR OPERATION 4.1. OSCILLATOR POWER UP Inserting the test lead into to the OSCILLATOR’s socket initiates the OSCILLATOR power up cycle. The OSCILLATOR flashes all six of its lights (LEDS) once simultaneously (< 0.5sec) to indicate that the leads have been correctly inserted and battery power is present.

  • Page 9: Oscillator Modes

    To enable this feature, connect the PROBE leads to the OSCILLATOR Blue test leads, either directly or via an unbroken cable pair. Press the PROBE’s and 600 keys simultaneously and hold them down for about 1 second until a beep is heard. This places the OSCILLATOR into TONE mode (the warble tone will be produced) and causes the OSCILLATOR to sound its buzzer if either a short circuit or a reverse polarity battery is present between...
  • Page 10 Exchange Connect The OSCILLATOR tone generation is disconnected and the line is connected through to Exchange using the Red leads. The White lead is open circuit. Exchange Customer Short Circuit (With White Wire) The OSCILLATOR tone generation is disconnected and the line is looped.

  • Page 11: Probe Operation

    5. PROBE OPERATION 5.1. SIGNAL TRACING To trace the tone signal generated by the OSCILLATOR, slowly move the PROBE’s antenna within close proximity to the cables under test. A tone signal picked up on the PROBE antenna will be reproduced as an audible tone. The audible tone volume increases as the PROBE antenna tip is brought closer to the cable carrying the tone signal.

  • Page 12: Connected To Exchange

    The factory default tone can be restored by simultaneously pressing and holding down the keys on the PROBE for 1 second until a beep is heard, see Figure 5-1. Figure 5-1. Reset Tone to Warble (Factory Default) 5.4. CONNECTED TO EXCHANGE The PROBE has a red/green light located to the left of the key.

  • Page 13: Check For Balanced Pair

    However, should the technician wish to perform additional tests following the Pair Identification process, it is recommended that the following connections be made prior to commencing Pair Identification:  Red test lead with:  Red clip to Exchange 'a' wire (+’ve); ...

  • Page 14: Three Wire Test

     At the customer end, identify the line pair and connect the PROBE test leads, then press key;  Disconnect the PROBE and connect the Resistance Bridge and locate the fault (as per the instrument’s manual). Oscillator Resistance Bridge Fault Locator Three Wire Test The Three Wire Method for resistance fault location is used when...

  • Page 15: Specifications

    7. SPECIFICATIONS 7.1. OSCILLATOR  Battery 9 V, alkaline IEC 6LR61  LED low battery indication  Short circuit detection, battery reverse polarity on Blue test leads  Weight and dimensions: 110 g 240 mm x 35 mm x 25 mm Mode 1: Tone (Pair I/D) ...

  • Page 16: Warranty

    WARRANTY Teletech Pty Ltd provides 12 month warranty for the TX916. The warranties do not cover any product that has been misused, abused, improperly or poorly used or disassembled. The warranty covers any product that becomes defective under reasonable normal usage as determined solely by Teletech Pty Ltd.

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