Cable TDR2022-02-16T11:36:11+00:00

C-Kore Subsea TDR

C-Kore Subsea TDR

The C-Kore Subsea TDR is a compact automated tool for testing subsea electrical assets. It can be configured in advance by C-Kore System Ltd or set up in the field easily by the end-user. It is simple to use, automating the previously complex work of driving a TDR.

The TDR is normally used in tandem with the Cable Monitor for fault-finding. Once the Cable Monitor has narrowed the location of a fault to a single component (for example an in-field umbilical) the TDR is used to precisely identify where in the cable the fault resides. This knowledge can be used to inform repair versus replacement strategies. By measuring directly subsea, the problems of deck-based downline testing are eliminated, including impedance mismatches, offset errors, faulty downlines and the difficulty of driving the TDR correctly.

For new asset installation the TDR can be used to characterise cables for future reference and find discontinuities in impedance that have not effected the insulation resistance. As this testing is automated, vessel time and personnel requirements can be reduced to achieve cost savings. The unit can be deployed subsea to take TDR readings directly once installation is complete.

The unit is powered by a high-capacity rechargeable battery for stand-alone operation. Simple user configuration is possible with a plug-and-play USB connection to choose what the unit will test and when. Every result is data-logged and the unit has built-in software for result analysis.

Main Benefits

  • Precisely locate faults and discontinuities within electrical cables
  • Save vessel and personnel costs with fast automated testing
  • Measure directly subsea for repeatable, reliable test results
  • Safe for divers and SCMs, high-voltage permits not required



C-Kore units are available with a wide-range of connector and body styles to suit any application. We hold a large stock of parts to allow a rapid response to urgent enquiries. If your connector is not shown or you have a unique mechanical arrangement, please get in touch as we have other solutions available.

  • Siemens (Tronic) DigiTRON version with both ROV and Diver options

  • Teledyne ODI Nautilus version with both ROV and Diver options

  • Both genders stocked in 4, 7 & 12-ways for all connector families

  • Official parts from original connector manufacturers, we work closely with Siemens and Teledyne

  • Large stock of standard connectors to react quickly to urgent requirements

  • Other connector types are available on request, including Tronic Mini-CE and Diamould connectors


  • Compact design for easy handling

  • Appropriate for most deployments

  • Suitable for diver or ROV


  • Straight design to prevent clashes

  • Appropriate when access is restricted

  • Suitable for diver or ROV

The C-Kore Rental Service


A copy of the C-Kore Config App is saved on the internal storage of every C-Kore unit. When the C-Kore system is connected to a PC using the supplied USB cable a removable drive will appear in Windows. Just start the program to edit configuration settings and download results using a simple interface.

The configuration application works on PCs running Microsoft Windows. The software runs directly and does not require any special installation steps.


The C-Kore units are small and self-contained, allowing for simple handling on the deck and subsea. To save time they can be deployed in the ROV tooling tray, diver cage or basket.

The exact unit specification varies with the measurement connector type, details for a typical unit are given below:

  • T-Shape Dimensions: 355 x 258 x 124 mm

  • In-Line Dimensions: 357 x 112 x 88 mm  (without ROV handle)

  • Weight (in air): 5 – 7kg

  • Depth Rating: 3000 msw

  • Operating Temperature: -10°C to +60°C

C-Kore Transit

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