MTDR300 - 3-phase Time Domain Reflectometer

  • 3-phase TDR
  • Battery and mains operation
  • Range >55km (TDR)
  • Auto-ranging “Find end of Cable”
  • Auto-fault find “Cursor to Fault”
  • Single jog-dial operation via user friendly menus
  • Large 10.4” full XGA colour display
  • Rugged, robust feld proven case

The MTDR300 is a 3-phase Time Domain Reflectometer (TDR) designed to provide quick, effective, accurate and safe prelocation of cable faults in electrical networks

Operation of the instrument is via a single jog dial and intuitive menu system. The large colour display further enhances operator comfort and aids rapid and accurate fault prelocation.

The MTDR300 can be powered from its internal rechargeable battery or mains power. It’s housed in a rugged, robust, field proven case making it suitable for use in hostile or challenging environments

By combining the MTDR300 with an impulse generator (thumper) and arc reflection filter, several methods of high voltage fault prelocation are possible.

The CAS-1 stand-alone software package is supplied with all MTDR300’s. This package allows the download (and upload) of saved traces for future analysis. It is also an ideal training package, as it contains all features of the MTDR itself.


This section contains Software and Firmware updates for the MTDR100 and MTDR300 product series. The latest MTDR100 release is 13_09_21_1 (yy_mm_dd_rel). Please download the latest Update zip file to your PC and then extract the contents to the root of a clean "thumb drive" or USB Drive. Extract the zip file to the root of the thumb drive. After extraction there should be one folder named Update which will contain all the required files. The MTDR100 or MTDR300 is updated by inserting this “thumb drive” or USB Drive into the USB Slot in the instrument. Then follow the instructions as listed in the “Configuration” sub-menu which is found from the “preferences” button. The MD5 file is available to help insure that the file download was successful and the file did not get altered during transmission. To use this file a MD5 checker/generator program will be required.

MTDR100: MD5 Checksum File {Update_13_10_24_1_MD5.txt}
170.8 KB | 25/07/18
Cable Analysis Software (CAS-1)

This version of software ( now supports the newer file formats produced by the MTDR line of instruments.

Cable Analysis Software (
868.2 KB | 14/03/19