MacArtney Nexus MkIV Multiplexer – Available for rental, hire and ex-rental purchase from Ashtead Technology.
The MacArtney NEXUS MK IV is replacing the successful NEXUS MK I, which has served the subsea ROV/ROTV market well for 6 years.. The MK IV is the 'Multibeam-Sonar Multiplexer' and does not interface video cameras. It is based on the MacArtney (P)ECL fibre optic converters, our Cypress multiplexer, MiniController and E2P ethernet converters. The new power switching of all the sensors is software controlled and combined with monitoring of sensor power status.
The subsea housing is made of 6082 hard anodised aluminium and the Subconn connectors are also the anodised aluminium type. If more than 3000 msw depth rating is required the pressure vessel will be produced in Titanium or high tensile Duplex steel. The fibre optic telemetry takes advantage of the CWDM (Course Wavelength Division Multiplexing) technology and communicates all signals over one singlemode optical fibre.
|TOPSIDE UNIT SPECIFICATIONS|
|Supply voltage||85-265 VAC, 50/60 Hz|
|Power consumption||25 W|
|Various||Light diodes for status indication|
|SUBSEA UNIT SPECIFICATIONS|
|Dimensions pod||OD 197mm, total length including connectors app. 770mm|
|Depth rating||3000 msw (standard)|
|Material||Hard anodised aluminium (standard)|
|Supply voltage||85-132 & 180-264 VAC, 50/60 Hz|
|Output voltage||24/12 VDC/others|
|Power switching||12 x 24V & 7 x 12V|
|Multibeam-sonar signals||2 (P) ECL, 125 Mb/s (Option: SeaBat 71xx interface)|
|Digital Channels||16 I/O|
|Analog Channels||8 input (12 bit), 2 output (12 bit)|
|Leak||Occupies either 1 analog input or 1 digital input|
|Fibre type||Singlemode 9/125|
|Number of fibres required||1 or 2|
|Flux budget||>26 dB|
|Topside unit dimensions||19 rack mount||1U high"|
|Subsea Unit||50kg (in air), 26kg (in water)||110lbs (in air), 57lbs (in water)|