MacArtney Underwater Technologies
http://www.macartney.com
The MacArtney NEXUS MK X is a plug and play multiplexer for ROV’s. The multiplexer system is an extension of the successful NEXUS MK I and is based on various contacts between major ROV operators and MacArtney’s headquarters in Denmark.
The NEXUS MK X is designed to be the main vehicle multiplexer for a work class ROV and will fit new ROV’s as well as upgrading older systems. The easy installation of the system will help significantly whenever big ROV mobilizations require additional cameras, sonars, attitude sensors, manipulators, cable and pipe trackers etc. to be installed.
The multiplexer system is consists of a Focal Model 903 MUX and the MacArtney Micro Controller
The topside unit is a 19" rack unit and has a power on/off switch/indicator in the front panel as well as various LED’s for status indication. On the back panel, a number of D-sub connectors are installed for serial data, analogue and digital I/O’s and BNC connectors for video output and multibeam.
The control of camera functions and sensor power is performed by connecting existing switches from the ROV system panel to the back panel of the NEXUS topside unit. The micro controller topside reads this information, and uses one serial RS 232 for communication with the sub sea micro controller.
The underwater electronics is housed in an aluminium bottle rated to 3000m working depth.The bottle includes multiplexer, control system, video transmission system, power supply for all the above-mentioned and for all the external sensors. Furthermore, 4 multi conductor harness cables are routed to an oil filled junction box rated to 3000 m. This box has 12 Subconn® connectors for sensors and 1 Subconn connector for power input to the complete system