Kelvin Hughes CTX-A8 'X' Band Radar User Manual Installation Guide

Kelvin Hughes Limited 'X' Band Radar Installation Guide

Installation Guide

INSTALLATION OF UPMAST X-BAND TRANSCEIVER CAE-A12-20 (25kW)GENERAL8The Upmast Transceiver comprises a casting with two cover plates. Both coverplates are secured by four bolts and may be removed to access the motor andtransceiver PCBs mounted within. The PCBs are secured to mounting plates whichform a safety cage whilst in the closed position.FITTING9The Upmast Transceiver should be installed in such a position to avoid any RFinterference and where Blind Arcs, caused by obstructions, e.g. masts, funnels,etc, are eliminated or minimised. Funnels, crosstrees and other large obstructions canalso reflect energy and give rise to spurious echo returns, especially in close proximity toland.10 The Upmast Transceiver must not be mounted where the temperature exceeds70oC.11 The Upmast Transceiver must be kept clear of ship’s flexible communicationantennas to avoid damage to both.12 The Upmast Transceiver must be mounted more than 914mm above any flatsurface, when the flat surface is greater than the diameter swept by the antenna.13 The Upmast Transceiver must not be positioned in the close proximity of anymagnetic compass or D/F antenna, etc.NOTE A heavy duty earthing strap or cable must be taken from the upmasttransceiver/turning mechanism to the ship’s earth.14 Position the Upmast Transceiver at the installation site, supporting the unitwhere necessary, and mark out the mounting holes for drilling. Refer to Figure 1for dimensions.15 Allow sufficient cable length, (approximately 1m) on all cables to enable them tobe routed through the Transceiver unit. Refer to Figures 2 and 4 for details.Ensure that there is sufficient slack on all cables to allow for full movement of theequipment on its mounts during any sudden shock, or extreme movement of the vessel.WARNINGTHE UNIT MUST NOT BE LIFTED BY MEANS OF THEANTENNA OR WING CASTING. THE LIFTING SUPPORTSMUST GO UNDER THE CASTING.Issue 1 4 mkivKH1254Chapter 2
mkiv 5 Issue 1KH1254Chapter 2All dimensions in millimetres.Turning Mech Weight : 30kgAntenna (2.4m) Weight : 21kgoooPower Consumption : 150VAOperating Temperature: -25 C to +55 CRelative Humidity 95% : +40 COPERATING TEMPERATURE RANGECOMPASS SAFE DISTANCES :-Standard Compass 3m (Grade I)Steering Compass 1.8m (Grade II)KELVIN HUGHESOFFONFWDARMIn transit MonitorArm is stowed insideTurning Mechanism cartonPTFE WINDOW FITTED AT THIS CONNECTIONEARTHING POINT(TORQUE LOADED TO 75 kg/m)CABLEGLANDSWAVEGUIDEOUTLETSAFETYSWITCHOUTER HOUSING14 mm holes (4 0 ff )MONITORM12 bolts1-2MM LESS THANWAVEGUIDE FLANGE40TURNING RADIUS 2412 or 19902262 or 1840645406140250570310150270270310135CD-4541Figure 1 - Upmast X-Band Transceiver CAE-A12-20 (25kW):Installation Dimensions
Issue 1 6 mkivKH1254Chapter 2TB1C TB1B TB1A TB2MODULATORCONTROLPCBHEADINGLINE PCBFWDEARTHING POINTON UNDERSIDEPOWERSUPPLYUNITVIDEO & SYNCTERMINALPLATEMAINS FILTER SHIP'S MAINSSAFETY SWITCHDISPLAY (38 CORE CABLE CODE M)TX MONITOR ARMCD-4542PLBFigure 2 - X-Band Upmast Transceiver: Cable Routing
MONITOR ARM16 The Monitor Arm is positioned by means of a channel above the glands at therear of the casting, and is secured by a clamp with two retaining screws. Theneon points to starboard when viewed from the rear of the transceiver.17 The cable is routed through the gland nearest the channel and connects to PLA-7(red) and PLA-8 (blue) on the Azimuth PCB (CTX-A106). Refer to Figure 3.ELECTRICAL CONNECTION18 For detailed electrical connection of cables to the transceiver unit, refer to theinstallation diagrams in Figure 5. Figure 7 shows a typical arrangement with theMkIV transceiver connected to the NUCLEUS 3 Display, via the Radar Interface Unit(RIU). Ensure that all cables are secured to their associated entry point and thatscreened cables are earthed to their respective units.19 Connecting cables between the display and the transceiver should be limited to alength of 65 metres. Where the distance between transceiver and displayexceeds 65 metres, special low loss co-axial cable should be used. Where the distancebetween transceiver and display exceeds 180 metres, special low loss co-axial cable,and line amplifiers for video and sync must be fitted (see Annex A).20 Cable specifications are detailed in Paragraphs 24 onwards.CHECKS AFTER FITTING21 Setting to work instructions are described in Chapter 3, Commissioning. Thetransceiver must be thoroughly checked for security, accessibility, and correctcabling runs.mkiv 7 Issue 1KH1254Chapter 2TO TX MONITOR ARMCAE-A106REDPLABLUE612345678910CD-1134Figure 3 - X-Band Upmast Transceiver Transmitter Monitor Arm:Connection Diagram

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