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TDR 1170 Time Domain Reflectometer - Overview

The unique features and new technology used in the TDR1170 Time Domain Reflectometer makes it the most flexible and easiest to use cable fault locator accessory. The TDR 1170 features an automatic configuration, which can be modified as necessary. All cable fault data can be stored and retrieved at any time, ensuring time saving, consistency and accuracy from one crew to the next.

The digital TDR1170 will locate and identify short circuit (bolted) faults, low resistance shunt faults, open circuits, high resistance series faults, wet sections, splices, transformers, cable transitions, and concentric neutral corrosion. To locate high resistance, intermittent and flashover faults, the TDR 1170 is designed to measure in the digital arc reflection, current impulse, voltage decay, and all differential fault locating modes. The selection of fault location method allows the operator to select the method that they are most familiar with or the method that is most appropriate for the type of cable and type of fault that is encountered.

The TDR 1170 requires a high voltage coupler to interface to a cable fault locator (thumper). The cable fault locator then provides the voltage and current to enable the TDR 1170 to quickly and definitively locate cable faults. Included with the TDR 1170 is a software package to allow the stored data to be viewed on a PC and also be printed and analyzed by personnel or by training teams.


TDR 1170 Time Domain Reflectometer

  • Digital High Voltage TDR - 5 Methods of Fault Location
    Arc Reflection
    Impulse Current
    Voltage Decay
    Differential Methods
    Low Voltage
  • Color LCD Screen
  • PC Software
  • SVGA Output for External Monitor


  • Pre-locate faults.
  • Diagnose cable faults.
  • Easy to use Time Domain Reflectometer.
  • Compatible with Common "Thumpers".
  • Provides Long-Term Storage and Evaluation.
  • Cable System Signature Mapping.
  • Reduce Outage Time.
  • Reduce Cable Damage.
  • Simplified Operator Training.

Technical Specifications

Input Voltage

90V to 250V AC, 50/60Hz

Pulse Characteristics


25 Volts into 50 Ohms

Pulse Width

50ns to 10s


< 1% of cable length

VP Range

98ft/s to 492ft/s

Units of Measure

Feet, Yards, Meters

Input Range

Sample Rate

12.5 to 30ms


1 foot to 160,000 feet

Operation Modes

Arc Reflection

Impulse Current

Voltage Decay

Differential Methods

Low Voltage

Trigger Delay

1 to 39ms

Memory Modes

32 sets of 1 or 3 phases

PC Interface

RS-232 Port


Large 10.4 inch (diagonal) VGA Color Display


Operating Temperature

-12C to 50C

Storage Temperature

-40C to 60C


48cm (W) x 26cm (H) x 18cm (D), Standard 18-inch rack




Ordering Information

Haefely Hipotronics TDR1170

Time Domain Reflectometer in standard 19-inch rack mount cabinet


Scope of Supply: One each, RG58/U BNC-BNC cable, Serial interface cable and input line cord, operators manual and TDR-PC interface software.


Optional Accessories


Cable Rack

HVC4100 Series

HV Coupler to protect TDR from HV of cable fault locator


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Macey's Electrical Pty. Ltd.
ABN 17 344 601 468
Unit 1, 49 Gavenlock Road, Tuggerah, NSW Australia 2259
Phone: +61 2 4353 4644    Mobile: 0412 678 925