Time Domain Reflectometer course

Time Domain Reflectometer

30 minutes

Requirements:

  • Basic knowledge of electricity

Danish

Included in membership

DKK 675 ex VAT

Topics:

  • Reflective measurements

  • Locate cable breaks, joints and branches

  • Water in cables

  • Limitations and prerequisites for use

  • Impedance matching

  • Velocity of propagation in cables

  • Test pulse and dead zone

Course description Reflectometer (TDR)

A reflectometer can be used in many applications, from HV cables to small data cables. Any change in cable type, joints, breaks or faults lead to a change in impedance and can be graphically read on a reflectometer. Throughout the course, it is illustrated with focusing on practical use. It's not rocket science to be able to use a reflectometer in your practical work with cable tracing and troubleshooting. There are a few little tricks that easy can be learned with this short course.

Test on all types of cables

Prerequisite TDR (Time Domain Reflectometer)

There is basically one prerequisite for a reflectometer test to be performed on a cable: There must be two conductors. For example, you can measure a twisted pair cable and compare individual sets, or a coax cable between conductor and screen. On a grounded supply cable between a conductor and ground or between two conductors.

Cable types and applications

Reflectometer has been used for many years for old-fashioned telephone cables, but is also used for all other grounded cables. Other applications are in aircraft and installations with extensive cable/wire systems that can be subject to failure.

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