Chelsea Technologies Group

The Chelsea Technologies Group manufactures a range of Deck Units. Please click below for detailed product information or contact us to discuss your particular application.

CTG Marine Deck Unit	Portable Interface Unit	FlexiData Deck Unit	Towed Vehicle Integrated Deck Units

Description:

Options:

The CTG Marine Deck Unit interfaces between the computer and the instruments. It supplies the power to the instrument suite and converts the RS422 output from the instruments to the RS232 format required by the PC. The CTG Marine Deck Unit case may be rack mounted or stand alone by removing the mounting lugs. The case is not spray proof so it must be sited within a deck house environment.

Having a 72 VDC output it is specifically designed with sufficient voltage overhead to operate on most multi-core oceanographic cables up to 1000 metres long when providing 1A to the sub-sea instrumentation.The CTG Marine Deck Unit is typically used in real time deployments of towed vehicle based systems, ie, Nn-Shuttle and AQUA^shuttle III and profiling packages. However it can also be used in the laboratory during sensor calibrations etc. The appropriate interface unit to instrument cable is required.

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The CTG Marine Deck Unit can be supplied in a 19" cabinet. This cabinet, 17U high, can accommodate a 4U high CPU fitted with three additional serial ports. A 15" TFT LCD colour monitor (7U high) and keyboard with an integrated tracker ball (1U high) completes the system. There is a spare 3U high slot should an additional piece of equipment need to be added at a later date.

CTG Marine Deck unit The CTG Marine Deck Unit can be supplied in a 19" cabinet.

CTG Marine Deck unit
complete with options.

Specification:
Supply input	110/240V Selectable
Power consumption	130Watts
Fuse rating	2 Amp fast blow
Size	440W (19" rack mounting) x 352 D x 88 H equivalent of 2U
Weight	6kg
Instrumentation Power	72V DC @1.6A
Communication	RS232
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Environmental Conditions:
Operating Temp range	0^oC-50^oC
Maximum relative humidity	80% for temps up to 31^oC; 50% relative humidity at 40^oC
Mains supply voltage fluctuation	+10%

Description:

The Portable Interface Unit converts the RS422 communications protocol of the subsea instruments (required to enable communications over long cables) to RS232 for interfacing to a host PC running AQUA^soft.

Having a low voltage output (16VDC) the PIU is not designed to withstand large voltage drops experienced when deploying instruments on long cables. It is used with short cable lengths (typically 3m).

A mains powered adapter (110-240 VAC) allows recharging of the internal battery whilst simultaneously powering the instrument.

The appropriate interface unit to instrument cable is required.

This unit is not designed to provide power during deployment.

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Specification:
Power in from an external power supply	18V DC; 2A(F) fuse rated
Power out to sensor from external PSU	15 to 16V DC
Power out to sensor from internal battery	10.8 to 12V DC 1A(F) fuse rated
Battery Charge Voltage Fast charge	14.8.DC
Battery Charge Voltage Trickle charge	13.8V DC
Case Dimensions	297 x 210 x 60mm
Weight with one battery	2.3Kg
Weight with two batteries	3.1Kg
Safety Standard	BS EN 61010-1: 1993
Max sea cable length to sensor	3m
Re-chargeable Battery	Yuasa NPT2.1-12 RS 597-813. 1.5A(F) inline fuse rated
Communications to and from PC	RS232
Communications to and from sensor	RS422
RS 232 Connector	23 way D Type socket
DC Volts in Connector	2.1mm Jack socket
Sea Cable Connector	MIL-C-5015 with sealing cap

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Single PC Configuration		Dual PC Configuration
Typically used with CTG instruments where a single PC is required for vehicle control and data display. An integrated deck unit, mounted in a 19" instrumentation rack 17u high. *Comprising*: Marine Deck Unit Rack mounted single card PC Single TFT flat panel monitor Keyboard Data and power distribution panel Software		Typically used with complex sensor suites where a dual PC is required for vehicle control and data display. An integrated deck unit, mounted in a 19" instrumentation rack 24u high. *Comprising*: Marine Deck Unit Rack mounted dual card PC Two TFT flat panel monitor Keyboard Data and power distribution panel, including crossover switch Software
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