Raymarine Radar Scanner manual System connections, DC power connection, Grounding the radar system

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34	Pathfinder Radar Scanners

2.3 System connections

DC power connection

Power is supplied to the scanner via the display unit; the power cable is supplied with the display unit, refer to your display unit Owner’s Handbook for details on connecting power. However, you should be aware of the following.

The DC system should be either:

•Negative grounded, with the negative battery terminal connected to the ship’s ground.

•Floating, with neither battery terminal connected to the ship’s ground.

CAUTION:

This radar is not intended for use on “positive” ground vessels. The power cable Earth screen connections must be connected to the ship’s ground.

Grounding the radar system

It is important that an effective RF ground is connected to the radar system. You must ground the radar by connecting the drain wire (screen) of the Power/NMEA Input cable to the nearest ground point of the ship’s RF ground system. Refer to your display unit Owner’s Handbook for details.

Note: Use only this ground connection.

Power Connections

The power connection to the radar should be made at either the output of the battery isolator switch, or at a DC power distribution panel. Raytheon recommends that power is fed directly to the radar via its own dedicated cable system and MUST be protected by a thermal circuit breaker or fuse, fitted close to the power connection. Refer to the table below for isolator switch, circuit breaker or fuse value ratings. Check all terminal connections are clean.

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Contents Pathfinder Radar Scanners Page Pathfinder Radar Scanners Owners Handbook OctoberPathfinder Radar Scanners Preface Display Software VersionWarranty Contents Appendix a Overview IntroductionEMC installation guidelines This handbook is divided into three chapters as followsConnections to Other Equipment Supplied with For Unpacking and inspecting the componentsOption Supplied with Option forSelecting the scanner unit site Radome Scanner Weight Open Array ScannersPathfinder Radar Scanners Mounting surface power boats Mounting surface sailboatsSetting the radiation plane Ideal Radiation PlaneCable runs Rejoining CablesInter-unit cable Scanner Package Inter-Unit CableRadome scanner cables Inter-Unit Cable Scanner Package2DE Eur Power cable Radome Scanner Inter-Unit Cables32 V Systems 4 kW scanners Open array scanner cablesSystems 4 kW scanners only Inter-Unit Cable KW Scanners32 V Systems 10kW scanners Power Cable Core Size each core 32 V systemsKW Scanners Pathfinder Radar Scanners Installing the Scanner Connecting the radome scanner inter-unit cable Inner cover White wire Installing the Scanner Pathfinder Radar Scanners Open array scanner Securing the pedestal to the mounting platform Connecting the open array scanner inter-unit cable Heatshrink Heat Shrinking of Wires Do not grease the gasket in the pedestal lid Fitting the open array to the pedestal System connections DC power connectionPower Connections Grounding the radar systemScanner connection Vessels Device Open Array Systems Radome Supply 10 kWFront view Display Cable Connector DisplayScanner Connector Panels Display unit connectionPathfinder Radar Scanners System Checks and Alignment Set up, alignment and timing checksSwitch on and initial set up EMC ConformanceChecking transmission Display timing adjustmentOpen array position alignment Bearing alignmentMaintenance Servicing and SafetyRoutine Checks Problem Solving Problem CorrectionFor Accessories and Parts How to Contact Raytheon USFor Marine Product and Services Information For Technical SupportHow to Contact Raytheon Europe For Product Repair and ServiceAccessories and Parts Worldwide SupportTechnical Support Pathfinder Radar Scanners Transmitter 2D 18 Radome Scanner UnitGeneral Antenna4D 24 Radome Scanner Unit ReceiverIncluding Low Noise Converter/Limiter & if Receiver 5S and 9S 48 Open Array Scanner Unit Pulse Length/PRFAppendix a Specification 9S Transmitter 10 kWReceiver Noise Figure Less than 5 dB 7S and 11S 72 Open Array Scanner Unit 7S Transmitter 4 kW11S Transmitter 10 kW Appendix a Specification Pathfinder Radar Scanners Index Pathfinder Radar Scanners