Mk V

The Mk V is the network-enabled version of the ROVLe family. It synchronizes the system timebases over an Ethernet network. The Mk V receiver triggers the Mk V transmitter when a ping is required, also over the network. Future versions of the Mk V may provide the ability to track multiple ROVs simultaneously.

The Mk V transmitter requires power from the ROV. Additionally, the user must provide access for the transmitter to the ROV network, and at the topside, access to the ROV network for the transceiver. Typically, this means an Ethernet switch with an open port is required in the ROV (example), and a network hub is required at the topside (example, example).

The Mk III Transceiver is also compatible with the Mk V transmitter, which smaller than the Mk III transponder. Mk III systems sold after August 2025 will include the Mk V transmitter as the ROV-mounted component. A Mk V transmitter automatically detects if it should operate in Mk III mode or Mk V mode.

When a Mk V transmitter is properly connected, it will click when the transducer is gently tapped with a fingernail or pencil, until it detects a Mk V receiver on the network. At that point it should switch to clicking once per second.

A Mk V receiver communicates with the network hub via a power-over-Ethernet (PoE) connection. This cable can be up to 50 meters long depending on how well it carries the required DC power.