Modulus Technology Ltd carries out all repairs, servicing and technical support for all companies in the AAE Technologies Group that include Applied Acoustic Engineering Ltd and Ensign Subsea Systems Ltd

This would include all

  • Technical queries
  • Warranty issues
  • Spare parts
  • Customer training
  • Equipment repairs
  • Equipment modifications and upgrades
  • Equipment maintenance

The office hours are 8.30 – 17.00 UK time. After that time telephone calls will be directed to a member of the  support team.

For email technical support please use

Phone +44 (0) 1493 416452

Acoustic Positioning

When contacting us, please give us the serial numbers, firmware/software revision of the products being used and what peripheral equipment is connected (if any).   A log of the system settings and data outputs is useful.

Remote support is available for the Easytrak Nexus by clicking on this button from a Nexus console;


Maintenance packages are available for Nexus USBL systems; upgraded Nexus 1, Nexus 2 and Nexus Lite systems.

Sub Bottom Profiling

The majority of problems are due to generator/installation issues or cable and connector failures. When contacting us please give us as much information as possible, including model number and serial numbers.

**Please remember that lethal, high voltages are used in the equipment so no internal repairs must be undertaken. Only Applied Acoustics trained engineers should attempt a repair.**

Returning Equipment

In order to return goods to us a Return Materials Authorisation (RMA) number is required. Please visit our RMA Request page where you can find further information and a form which can be completed to begin the process.

Field Support and Training

We offer offshore skilled technical support to our customers. Fully experienced technicians can be present for on-site installation and commissioning, sea trials support or on-site maintenance and upgrades. We also have engineers who can travel at short notice to attend to technical problems.

We also carry out equipment training at our purpose built training facility at our Great Yarmouth factory, or on site. The comprehensive range of courses includes operational use and equipment maintenance.

Regional Centres

For repairs and technical assistance, Service Centres in Houston and Singapore may be the first point of contact. The businesses have vast experience of using Applied Acoustics’ equipment and carry some stock of spares. They receive regular training and may also have some equipment available for hire.