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Owners Handbook

Pathfinder

Radar

Scanners

owner’s

handbook

Document number: 81154_1

Date: 23rd December 1998

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Pathfinder Radar Scanners

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Pathfinder Radar Scanners

Owners Handbook

December 1998

SAFETY NOTICES

This radar equipment must be installed and operated in accordance with the

instructions contained in this manual. Failure to do so can result in personal

injury and/or navigational inaccuracies. In particular:

1. HIGH VOLTAGE. The scanner unit contain high voltages. Adjustments

require specialised service procedures and tools only available to qualified

service technicians – there are no user serviceable parts or adjustments. The

operator should never remove the scanner unit cover or attempt to service the

equipment.

2. ELECTROMAGNETIC ENERGY. The radar scanner transmits

electromagnetic energy. It is important that the radar is turned off whenever

personnel are required to come close to the scanner to perform work on the

scanner assembly or associated equipment.

It is recommended that the radar scanner is mounted out of range of personnel

(above head height).

Avoid looking directly at the antenna as your eyes are the most sensitive part of

the body to electromagnetic energy.

When properly installed and operated, the use of this radar will conform to the

requirements of ANSI/IEEE C95.1-1992 Standard for Safety Levels with

Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3Hz

to 300 GHz.

3. NAVIGATION AID. This radar unit is only an aid to navigation. Its

accuracy can be affected by many factors, including equipment failure or

defects, environmental conditions, and improper handling or use. It is the user’s

responsibility to exercise common prudence and navigational judgements.

This radar unit should not be relied upon as a substitute for such prudence and

judgement.

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Pathfinder Radar Scanners

RAYTHEON MARINE products are supported by a network of Authorized

Service Representatives. For information on Raytheon products and services,

contact either of the following:

UNITED STATES Raytheon Marine Company

676 Island Pond Road

Manchester, NH 03109-5420

Telephone: (603) 647-7530

800 539-5539

Fax: (603) 634-4756

EUROPE Raytheon Marine Limited

Anchorage Park

Portsmouth

Hampshire PO3 5TD

England

Telephone: 01705 693611

Fax: 01705 694642

The technical and graphical information contained in this handbook, to the best

of our knowledge, was correct as it went to press. However, the Raytheon

policy of continuous improvement and updating may change product

specifications without prior notice. As a result, unavoidable differences

between the product and handbook may occur from time to time, for which

liability cannot be accepted by Raytheon.

Raytheon is a registered trademark of Raytheon Company.

SeaTalk is a registered trademark of Raytheon Marine Europe Limited.

HSB is a trademark of Raytheon Marine Company.

Pathfinder is a trademark of Raytheon Marine Company.

This product contains technology provided under license by Acorn Group plc.

The copyright of this intellectual property is acknowledged by Raytheon

Marine Company, as are Acorn’s trademarks and patents. Acorn’s world wide

web address is http://www.acorn.com.

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Preface iii

Preface

This handbook describes the following Pathfinder radar scanners from

Raytheon:

2D 18" 2kW Radome Scanner

4D 24" 4kW Radome Scanner

It contains very important information on the installation and operation of your

new equipment. In order to obtain the best results in operation and

performance, please read this handbook thoroughly.

Raytheon’s Product Support representatives or your local dealer will be

available to answer any questions you may have.

Warranty

To register your Pathfinder Radar Scanner ownership, please take a few

minutes to fill out the warranty registration card found at the end of this

handbook. It is very important that you complete the owner information and

return the card to the factory in order to receive full warranty benefits.

EMC Conformance

All Raytheon equipment and accessories are designed to the best industry

standards for use in the leisure marine environment.

Their design and manufacture conforms to the appropriate Electromagnetic

Compatability (EMC) standards, but correct installation configuration is

essential to maintain EMC performance.

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iv Pathfinder Radar Scanners

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Contents v

Contents

Chapter 1: Overview ............................................................................ 1

1.1 Introduction ................................................................................. 1

EMC Installation Guidelines ........................................................ 2

1.2 Unpacking and Inspecting the Components ................................... 3

1.3 Selecting the Scanner Unit Site ..................................................... 4

Mounting Surface: Sailboats ................................................... 5

Mounting Surface: Power Boats.............................................. 5

Setting the Radiation Plane ..................................................... 7

1.4 Cable Runs .................................................................................. 8

Inter-Unit Cable - Radome Systems ............................................. 8

Power Cable -Radome ................................................................10

Chapter 2: Installing the Scanner ...................................................... 13

2.1 Radome Scanner ........................................................................13

Securing the Radome Scanner to the Mounting Surface ................13

Connecting the Radome Scanner .................................................14

2.2 System Connections ....................................................................17

Scanner Connection ...................................................................18

Display Unit Connection ............................................................19

Chapter 3:System Tests and Post Installation Alignment ................ 21

System Check ............................................................................21

Set Up, Alignment and Timing Checks ........................................21

Appendix A: Specification ................................................................. 23

2D 18" Radome Scanner Unit .....................................................23

4D 24" Radome Scanner Unit .....................................................24

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vi Pathfinder Radar Scanners

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Chapter 1: Overview 1

Chapter 1: Overview

1.1 Introduction

This handbook provides instructions to assist you to install and set up the

following radar scanners:

18" Radome Scanner

24" Radome Scanner

A typical Pathfinder Radar system is illustrated below.

NMEA

SeaTalk

Display Unit

Distribution Panel

D4288-2

Scanner

12/24V Supply

12V Supply 12V Supply

Junction

Box

GPS

Compass

This handbook is divided into three chapters as follows:

Chapter One provides an overview of the scanner installation. It includes

sections on Unpacking and Inspecting the Components, Selecting the Scanner

Site and a description of the Cable Runs.

Chapter Two provides detailed instructions to mount and connect each type of

scanner.

Chapter Three provides instructions to perform the system checks, aligment

and adjustments.

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2Pathfinder Radar Scanners

EMC Installation Guidelines

All Raytheon equipment and accessories are designed to the best industry

standards for use in the leisure marine environment.

Their design and manufacture conforms to the appropriate Electromagnetic

Compatibility (EMC) standards, but correct installation configuration is

essential to maintain EMC performance and CE compliance. Although every

effort has been taken to ensure that they will perform under all conditions, it is

important to understand what factors could affect the operation of the product.

To avoid the risk of operating problems, all Raytheon equipment, and cables

connected to it, should be installed as follows:

• Ensuring you follow the installation instructions in Chapter 2, particular

with reference to earthing details.

• With at least 1m (3ft) from any equipment transmitting or cables carrying

radio signals e.g. VHF radios, cables and antennas. In the case of SSB radios,

the distance should be increased to 2m (7ft).

• Avoiding the beam from another radar scanner. A radar beam can normally

be assumed to spread 20 degrees above and below the radiating element.

• The equipment should be supplied from a different battery than the one used

for engine start. Voltage drops below 10.7V in the power supply to our

products can cause the equipment to reset. This will not damage the

equipment, but will cause the loss of some information and can change the

mode of operation.

• Genuine Raytheon cables must be used at all times. Cutting and rejoining

these cables can compromise EMC performance and must therefore be

avoided unless specifically detailed in this handbook.

• If a suppression ferrite is attached to a cable, this ferrite must not be removed.

If the ferrite has to be removed during installation it must be reassembled in

the same position. Section 2.1 Installing the Radome Scanner includes

instructions on fitting a ferrite.

The following illustration shows a typical range of suppression ferrites fitted to

Raytheon equipment.

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Chapter 1: Overview 3

If your Raytheon equipment is going to be connected to other equipment using

a cable not supplied by Raytheon, a suppression ferrite MUST always be fitted

to the cable close to the Raytheon unit.

1.2 Unpacking and Inspecting the Components

Unpack your system carefully, to prevent damage to the equipment. It is good

practice to save the carton and packing for future use, in case you need to return

the unit for service.

Check that you have all the correct system components. These depend on your

system package, as follows:

ItemItem

Item Part No.Part No.

Part No.Part No.

Part No. SuppliedSupplied

SuppliedSupplied

Supplied OptionOption

OptionOption

Option

with:with:

with: for:for:

for:for:

for:

Radome ScannersRadome Scanners

Radome Scanners

2D 18" 2kW Radome Scanner M92650 US Version -

2DE18" 2kW Radome Scanner M92650E European Version -

4D 24" 4kW Radome Scanner M92652 - -

Radome Scanner Accessories Radome Scanner Accessories

Radome Scanner Accessories (2D & 4D Variants)

Inter-unit cable 15 m heavy M92668 4D -

Inter-unit cable 25 m heavy M92669 - Both

Inter-unit cable 10 m light M92692 2D (US version) -

Inter-unit cable 15m light M92720 2D (Europe version) -

Extension cable 5m M92699 - Both

Extension cable 10m M92700 - Both

Mast Mount 18" Scanner M92722 - 2D

Mast Mount 24" Scanner M92698 - 4D

Radar Interface adapter M92721 - 2D

To fit radome to M88390 type 18" mast mount

Radome mounting interface plate M92731 - 2D

To mast mount the radome

Supplied with HSB Series Display UnitSupplied with HSB Series Display Unit

Supplied with HSB Series Display Unit

Ferrite Clamp R55007 - Both

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4Pathfinder Radar Scanners

1.3 Selecting the Scanner Unit Site

This section provides information that affects the possible locations of the

scanner, and its position relative to the display unit and to the power supply.

The dimensions of the each scanner unit are shown in the following diagrams.

Selecting the best location for the scanner unit requires careful consideration of

the following points, to ensure reliable and trouble free operation:

Note: In order to minimise potential interference to other systems on board ship

(EMC), it is advisable to mount the scanner on a part of the boat that is insulated

from the ship’s battery negative. If you cannot do this, and encounter problems,

you can fit insulating bushes between the scanner and its mounting bracket.

•Height: The scanner unit should normally be mounted as high as practical

above the waterline, for two reasons:

- Radar operates at the line-of-sight, so a high mounting position gives

better long range performance.

- Surrounding large objects, in the same horizontal plane, can interfere with

the radar signal and cause blind areas (shadow sectors) and false targets on

the radar screen (see below).

However, do not mount the scanner so high that it is affected by the pitching

and rolling of the vessel. In addition, you may need to lower the scanner to

avoid creating a shadow sector.

•Access: The scanner unit site should be easily accessible to allow

maintenance to be carried out safely.

•Safety: The scanner should be out of range of personnel (above head height).

•Magnetic compass: Mount the display unit at least 1m away from a

magnetic compass.

•Cable run: The maximum length of cable between the display unit and the

scanner unit should not normally exceed 20m (60ft) for radome scanners. If

you need to use a longer cable, refer to Section 1.4 Cable Runs.

•Shadow sectors and false echoes: Mount the scanner away from large

structures or equipment, such as the fly bridge, large engine stacks,

searchlights, horns, or masts. It is particularly important to avoid shadow

sectors near the bow. Raising or even lowering the scanner may help to

reduce these effects.

In shadow areas beyond the obstruction there will be a reduction of the beam

intensity, although not necessarily a complete cut-off; there will be a blind

sector if the subtended angle is more than a few degrees.

In some shadow sectors the beam intensity may not be sufficient to obtain an

echo from a very small object, even at close range, despite the fact that a

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Chapter 1: Overview 5

large vessel can be detected at a much greater range. For this reason the

angular width and relative bearing of any shadow sector must be determined

at installation. Sometimes shadowing can be seen by increasing the radar

gain until noise is present. Dark sectors indicate possible shadowed areas.

This information should be posted near the display unit and operators must

be alert for objects in these blind sectors.

It should also be noted that wet sails create shadow areas and thus sail boat

operators should be aware that radar performance may reduce in rain.

If you mount the scanner on a mast, echoes from the mast may appear on the

radar display. These can be minimised by placing absorbing material, such

as a block of wood, between the scanner and mast.

•Platform rigidity/stability: The scanner platform should not twist (causing

bearing errors) or be subject to excessive vibration.

•Heat/fumes: Mount the scanner away from the top of exhaust stacks, since

the scanner and cables can be damaged by excessive heat and the corrosive

effects of stack gases.

Mounting Surface: Sailboats

The scanner unit can be installed on a mast platform, an arch, or a bridge

structure. Make sure that the platform surface is flat and the scanner unit drain

hole is not obstructed. Raytheon recommends that radome scanner units are

best suited for sailboat operation as open array systems are more difficult to

protect from ropes and sails.

For sailboat installations, Raytheon offers a universal mast mount kit for each

scanner type. These optional mounts are used to fit masts, with a minimum

diameter of 60 mm (2½in), to a flat surface. When using the mast mount kit,

appropriate hardware should be used for the style and structure of the mast

aboard the vessel.If there is any doubt concerning the appropriate type of

hardware, consult your boat dealer or representative for their recommendations.

Depending on the type of sailboat, a radar scanner guard should be installed if

the sails could touch the scanner or platform. Without a proper radar guard the

mounting platform and the radar scanner could be severely damaged.

Mounting Surface: Power Boats

On many small vessels the scanner unit can be installed on a mast platform, an

arch, or a bridge structure. If necessary, construct a radar mounting pedestal to

obtain a sufficiently high mounting position. Make sure that the platform

surface is flat and the scanner unit drain hole is not obstructed. Ensure the

platform is strong enough to support the maximum shock loads likely to occur.

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6Pathfinder Radar Scanners

D3224_3

Weight: 6.5 kg (14.3lbs)

Compass Safe Distance: 1m (33")

18" Radome Scanner

D3228_4

Weight: 7.5 kg (16.5lbs)

Compass Safe Distance: 1m (33")

24" Radome Scanner

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Chapter 1: Overview 7

Setting the Radiation Plane

The scanner unit should be mounted so that the array rotates parallel to the

waterline. The radar beam is approximately 25° wide in the vertical direction,

providing good target detection during the vessel’s pitching and rolling.

Planing hull vessels, and some displacement hull vessels, adopt a higher bow

angle when the vessel is at its cruising speed. In many cases this substantially

alters and raises the radar’s main radiation plane, and can cause poor detection

of nearby targets. It may be helpful to lower the radar beam back towards the

parallel, by shimming the rear of the radar, so that the beam points slightly

downwards with respect to the waterline when the vessel is at rest.

The shims may be made from aluminium plate wedges, simple flat washers, or

an angled wooden block. For thick shims, you may need longer securing bolts

than the M8x40 bolts supplied with the scanner.

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8Pathfinder Radar Scanners

1.4 Cable Runs

You need to consider the following before installing the system cables:

– You need to fit the inter-unit cable and the power cable.

– All cables should be adequately cleated and protected from physical

damage and exposure to heat - avoid running cables through bilges or

doorways, or close to moving or hot objects.

– Acute bends must be avoided

– Where a cable passes through an exposed bulkhead or deckhead, a

watertight gland or swan neck tube should be provided.

You need to run the following cables:

CAUTION

Do not pull the cable through bulkheads using a cord attached to the 8-way

connector. This could damage the connections.

•Inter-unit cable, supplied with the scanner unit. This is vinyl-covered and

shielded, with a connector plug at one end for connecting to the display unit

or extension cable. The other end of the radome scanner cable is fitted with

an 8-way plug and power cores (covered by a clear protective sleeve) for

connecting to the scanner.

• Power cable, the scanner receives power via the display unit. The power

cable is supplied with the display unit. However, connection details are

provided in this section.

Inter-Unit Cable - Radome Systems

The inter-unit cable entrance is at the rear of the scanner unit. If the unit is

mounted on a hollow mast the cable may be run inside the mast and then fed

through the radar’s cable entrance. Make sure that the cable does not chafe

where it enters and exits the mast.

Note: Route the cable from the display up to the scanner, since this will require

the smallest clearance hole.

CAUTION

The display connector on the inter-unit cable is a moulded plug that

cannot be replaced. DO NOT remove this molded plug.

The inter-unit cable, for connecting the scanner to the display unit, depends on

your scanner package as follows:

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Chapter 1: Overview 9

Scanner PackageScanner Package

Scanner Package Inter-Unit CableInter-Unit Cable

Inter-Unit CableInter-Unit Cable

Inter-Unit Cable

2D (US) 10m light (2 power cores)

2DE (European) 15m light (2 power cores)

4D 15m heavy (4 power cores)

The minimum bends permitted are:

Minimum bend, light cable 60 mm (~2.5 in) radius

Minimum bend, heavy cable 82 mm (~3.75 in) radius

The length of the supplied cable should be sufficient to complete the cable run

required on most small vessels. For longer runs, additional or replacement

cables are available, which have 4 power cores to minimise voltage drops over

the longer cable run: these optional cables include 5m and 10m extension

cables, and a 25m replacement cable.

The maximum inter-unit cable length is limited by the minimum supply

voltage, the scanner type (18" radome or 24" radome), and the cable type (2 or 4

power cores): if a mix of light and heavy cables is used, only 2 power cores are

connected through.

Note: For vessels with 24V power systems, any combination of inter-unit

cables can be used.

For vessels with 12V power systems, the recommended cable(s) for different

run lengths are given in the following table, which assumes a minimum supply

voltage of 10.7V (the lowest voltage likely to be reached by a 12V battery in

normal marine use). Do not use cable combinations that are not included in

the table.

Recommended Radome Inter-Unit Cable(s) for Vessels with 12V Power

Systems

Inter-Unit Cable Scanner Package

Length Required (m) 2D (US) 2DE (Eur) 4D

10 Std 10m light N/A N/A

15 Std + 5m ext Std 15m light Std 15m heavy

20 Std + 10m ext 25m assembly Std + 5m ext

25 25m assembly 25m assembly Std + 10m ext

30 25m + 5m ext 25m + 5m ext 25m + 5m ext

35 25m + 10m ext 25m + 10m ext 25m + 10m ext

Refer to the packing list in Section 1.2 for cable part numbers

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10 Pathfinder Radar Scanners

Note: This table applies to systems using the standard 1.5m power cable. If you

extend the power cable you may need to select different inter-unit cable(s), as

discussed in the following section Power Cable.

Note: If you are mounting the scanner on a sailboat, and will need to unstep the

mast, you should install a suitable junction box inside the boat. The junction

box should provide an 11- or 13-way terminal strip, depending on the number

of power cores in your cable, with a 10A rating. If cutting and joining the cable,

be careful not to damage any of the wires, and make sure that all the wires and,

in particular, the screen are re-connected correctly. Also, you should keep the

length of the un-screened coaxial cores to less than 50mm to maintain EMC

conformance.

Power Cable - Radome

The radome radar systems are intended for use on ships’ DC power systems

operating in the 10.7 to 32V DC range (that is, 12V and 24V systems, not 32V

systems). A 1.5m (5ft) power cable is supplied (with the display unit)for

connecting the ship’s DC power to the radar scanner via the display unit.

If a longer power cable run is required, use the supplied power cable to connect

to the display unit. Then use a suitable connector block to connect the free end

to the extension cable. The supplied power cable has a cross-section of 2.0mm2.

Note: For vessels with 24V power systems, the power cable may be extended

by up to 20m using a wire gauge of 1.5mm2 (AWG 16) or greater, irrespective

of the inter-unit cable length.

For vessels with 12V power systems, longer power cable runs may require

larger wire gauges to minimise any voltage drop in the cable. The scanner type

and the length and type of the inter-unit cable (see tables) also affect the wire

gauge required for the extension power cable. In order to determine the correct

supply cable size if the power cable must be extended, estimate the length of

cable between the ship’s main power source and the connector block, and then

select the wire size indicated by the distance and inter-unit cable in the

appropriate table following.

For example, you might have a 24" scanner, with 20m between the scanner and

display unit, that you plan to connect by extending the supplied 15m heavy

inter-unit cable with a 5m extension cable. In addition, your 12V power supply

might be 10m from the display unit, requiring an extension of 8.5m. To

determine the wire gauge required for the power cable extension, refer to the

table for the 24” scanner, go to the row labelled “15m Heavy + 5m ext”, and

read across until you come to a maximum cable length greater than 8.5m. This

is the 10m entry, in the column for 4.0mm2 wire gauge.

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Chapter 1: Overview 11

Maximum Extension Power Cable Lengths (m), 12V Systems with 18"

Radome Scanner

Inter-Unit Cable(s) Power Cable Core

mm2: 1.5 2.0 2.5 4.0 6.0 10.0

AWG: 16 15 14 12 10 8

10m Light 5.0 7.0 9.0 14.0 20.0 35.0

10m Light + 5m ext 1.0 2.0 3.0 4.5 7.0 12.0

10m Light + 10m ext Do NOT extend the power cable

15m Light 1.0 2.0 3.0 4.5 7.0 12.0

15m Heavy 7.0 10.0 13.0 20.0 30.0 50.0

15m Heavy + 5m ext 5.0 7.0 10.0 15.0 25.0 40.0

25m Heavy 4.5 6.0 8.0 12.0 20.0 35.0

25m Heavy + 5m ext 3.5 4.5 6.0 9.0 15.0 25.0

25m Heavy + 10m ext 2.0 3.0 4.0 6.0 9.0 15.0

Note: If you have an 18" radome scanner, and the wire gauge required for your

extended power cable is unacceptably large, you should replace the supplied

light (2 power core) inter-unit cable with the 25m heavy (4 power core) inter-

unit cable assembly (see table).

Maximum Extension Power Cable Lengths (m), 12V Systems with 24"

Radome Scanner

Inter-Unit Cable(s) Power Cable Core

mm2: 1.5 2.0 2.5 4.0 6.0 10.0

AWG: 16 15 14 12 10 8

15m Heavy 5.0 7.0 9.0 14.0 20.0 35.0

15m Heavy + 5m ext 4.0 5.0 6.0 10.0 15.0 25.0

15m Heavy + 10m ext 2.0 3.0 4.0 7.0 10.0 17.0

25m Heavy 2.0 3.0 4.0 7.0 10.0 17.0

25m Heavy + 5m ext 1.0 1.5 2.0 3.0 4.0 8.0

25m Heavy + 10m ext Do NOT extend the power cable

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12 Pathfinder Radar Scanners

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Chapter 2: Installing the Scanner 13

Chapter 2: Installing the Scanner

2.1 Radome Scanner

Securing the Radome Scanner to the Mounting Surface

CAUTION

THE DRAIN TUBE MUST ALWAYS BE USED, BUT MAY BE

SHORTENED IF NECESSARY

1. Using the paper template supplied with the scanner mounting kit, mark the

flat mounting surface with the mounting holes and drain tube hole, and drill

the holes as indicated on the template.

If it is impractical to drill a hole for the drain tube, then the scanner unit

should be mounted on 4 suitable spacers 10 mm high and the drain tube

length reduced by 10 mm. It will then be clear of the flat surface and can

still perform its function.

Note: If you are using a Raytheon mast mount bracket, the surface is pre-

prepared.

Note: If you are mounting the scanner on a flat surface, you may find it

easier to fit the drain tube, as described in the following section, before

securing the scanner.

2. Position the scanner on the mounting surface, ensuring that the cable inlet is

pointing aft.

3. Locate the bolts and washers supplied with the scanner, grease the bolts,

and secure the scanner to the mounting surface as shown in the following

diagram.

Scanner base

Mounting bracket

or mounting surface

Greased mounting bolt

D3995-2

Bitumen washer

You may need to use longer M8 mounting bolts to secure the scanner if you

have used shims to lower the main beam.

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14 Pathfinder Radar Scanners

Connecting the Radome Scanner

CAUTION:

Before wiring the scanner unit, make sure that the inter-unit cable is not

connected and power is not applied to the display unit.

When you have run the inter-unit cable to the scanner location, connect the

cable as follows:

1. Loosen the 4 (18") or 7 (24") screws securing the scanner cover. These

screws are captive and should remain assembled to the lower flange

assembly. Press the radome inwards to release the top. This breaks the seal

and makes removal easier.

2. To avoid losing the scanner cover, tie the cord, attached to the inside of the

base of the scanner, to the eye provided in the cover.

3. If you have a 24" scanner, unscrew and remove the inner cover:

D4006-1

Inner cover

4. Remove the drain tube from inside the base of the scanner, and insert it into

the drain hole as shown in the following diagram. Pull the tube gently from

outside the scanner so that it clips into place.

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Chapter 2: Installing the Scanner 15

5. Referring to the following illustration, remove the securing nut (1) from the

watertight gland and grommet (2), where the inter-unit cable (3) will enter

the base.

D3230-3

White wire

1 Securing nut 2 Gland 3 Inter-unit cable 4 Eight-way plug 5 Eight-way socket 6 Power

cores (2 or 4) 7 Terminal clamp 8 Screwdriver 9 Cable clamp 10 Cable clamp screws 11

Ferrite clamp

6. Slide the gland nut onto the inter-unit cable (3), and insert the cable, still

covered by its protective sleeve, through the gland into the base.

7. Cut and remove the protective sleeve to expose the 8-way plug (4) and

power cores (6).

8. If the scanner is connected to an HSB Series Pathfinder Radar display, fit

the ferrite clamp (11), supplied loose with the display unit, as follows:

- the ferrite clamp is supplied open. If the clamp has been closed, insert a

small, flat-bladed screwdriver into the slots at the end of the clamp

opposite the hinge and twist gently.

- Position one-half of the clamp around the eight cores of the inter-unit

cable between the 8-way plug (4) and the cable clamp, as close to the 8-

way plug as possible. (It may be necessary to fit the clamp over the the

cable tie closest to the 8-way plug – this will not affect the ferrite

clamp’s function).

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16 Pathfinder Radar Scanners

Ensure that the flat, ferrite side of the clamp does not trap or pinch any

of the cables.

Note: on the 24" scanner, the clamp must be contained inside the inner

cover.

- With the clamp positioned correctly, close the clamp ensuring none of

the cores are trapped by the hinge or latch.

9. Connect the 8-way plug (4) to the connector (5). The correct fitting is with

the small arrow marked on the body of the plug facing upwards and to the

left hand side. The grey wire will then be at the left hand side and the white

wire will be at the right hand side.

10. Connect the red and black power cores (6).

If you have a 10m or light 15m inter-unit cable, there is one pair of cores.

Connect the red cable lead to one of the terminal sockets marked “+”, and

the black cable lead to one of the sockets marked “-”.

If you have a heavy 15m inter-unit cable, there are two pairs of cores.

Connect the red cable leads to the terminal sockets marked “+”, and the

black cable leads to the terminal sockets marked “-”, with one lead in each

socket.

The terminal clamps (7) are operated using a screwdriver (8), as shown in

the inset diagram on the previous page.

CAUTION:

Do not earth the cable screen to the scanner. The radar system is earthed

via the display unit.

11. Secure the nut on the watertight gland, making sure that it grips the cable’s

outer sheath.

12. Secure the cable with the cable clamp (9), using the two screws (10)

provided. The clamp can be installed either way up, depending on the

thickness of the cable: use the position that matches the profile of the cable.

13. Tighten the securing nut (1) again to ensure a waterproof seal.

14. If you have a 4D scanner, replace the inner cover over the connectors.

15. Untie the cord from the scanner cover, and coil it up in the base of the

scanner unit so that it cannot foul the rotating antenna.

16. Replace the scanner cover, aligning the mark on the cover with the mark on

the scanner base above the cable gland, and tighten the 4 or 7 captive

screws. Do not over-tighten these screws.

154_1c2.p65 24/12/98, 08:5516

Chapter 2: Installing the Scanner 17

2.2 System Connections

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.

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.

DC Power Connection - Radome Systems

The Radome radar system is intended for use on ships’ DC power systems

operating in the 10.7 to 32VDC range (12V and 24V systems, not 32V

systems). The connections should be made at a DC power distribution panel,

through an isolation switch or circuit breaker that is fused or trips at not greater

than 10A. Check that all connection terminals are clean.

CAUTION:

If you do not have a breaker in your power circuit, you must fit an in-line

6.3A quick-blow fuse to the positive (red) lead of the power cable.

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.

The DC system should be either:

• Negative grounded, with the negative battery terminal connected to the ships

ground.

• Floating, with neither battery terminal connected to the ships ground.

154_1c2.p65 24/12/98, 08:5517

18 Pathfinder Radar Scanners

Scanner Connection

The inter-unit cable is connected to the scanner as described in Section 2.1. If

you are using an inter-unit extension cable, connect this to the display unit, and

connect the supplied cable to the extension cable.

The scanner connector pins are shown in the following diagram, together with

the connections and core colours .

CAUTION

The display connector on the inter-unit cable is a moulded plug that

cannot be replaced. DO NOT remove this molded plug.

35 4

13 12

White

Black

Orange

Black

Green

Yellow

Shield

Red

Violet

Blue

Grey

Video

Video RTN

*Battery --ve

Tx Trigger +

Battery --ve

Data I/O +

Tx Trigger --

Battery +ve

Data I/O --

*Battery +ve

Azimuth +

Azimuth --

White

Black

Orange

Yellow

Green

Blue

Violet

Grey

Red

Black

Video

Video Rtn

Tx Trigger +

Tx Trigger --

Data I/O +

Data I/O --

Azimuth +

Azimuth --

Battery +ve

*Battery +ve

*Battery --ve

Battery --ve

D4290-1

Front view of

Display Cable Connector Front view of

Scanner Cable Connector

Display Scanner

* Not present on 'light', 11 core cables.

Battery +ve/--ve = 12 or 24v.

154_1c2.p65 24/12/98, 08:5518

Chapter 2: Installing the Scanner 19

Display Unit Connection

The rear of the Pathfinder display provides the following connection sockets:

•Scanner connection

•HSB, for connecting to another HSB Series display (such as a chartplotter or

second radar display) – not available on SL70 display

•SeaTalk, for SeaTalk data input and output and connecting to another HSB

Series display (such as a chartplotter or second radar display)

•NMEA Output – not available on SL70 display

•Power/NMEA Input, for 12V or 24V DC power connection and two

NMEA 0183 inputs

1 NMEA Output 2 HSB 3 Power and NMEA Input 4 Scanner 5 SeaTalk

Connect the scanner cable to the scanner connection (4) and power to the

power/NMEA input connector (3).

Power and all other connector details are supplied in the display unit Owner’s

Handbook.

154_1c2.p65 24/12/98, 08:5519

20 Pathfinder Radar Scanners

154_1c2.p65 24/12/98, 08:5520

Chapter 3: Systems Test and Post Installation Alignment 21

Chapter 3:

System Tests and Post Installation Alignment

Once you have installed your radar scanner and display unit, and made all the

connections, you need to check your installation. You can then set up the radar

system, align the scanner and check the display timing.

Set up, alignment and timing checks are perfomed from the radar system

display unit. The procedures are outlined below; full details are provided in the

display unit Owner’s Handbook. You should read the Pathfinder radar display

unit Owner’s Handbook and familiarise yourself with the operation of the

radar.

System Check

Before performing the functional test, check the following:

• All securing bolts are fully tightened and mechanical locking arrangements

as specified are in place

• All connections have been made

• All connecting wires are secured and protected as necessary

Note: If you are the boat owner and have performed the installation yourself,

ask your authorised installation dealer to check the installation before going to

sea.

Set Up, Alignment and Timing Checks

Switch On and Initial Setup

To switch on the display unit, press and hold the POWER key until the unit

beeps. The magnetron warm-up sequence should start, after which the unit

should enter Standby mode.

If necessary, adjust the lighting and contrast .

If required, change the default language settings

Checking Transmission

WARNING:

The radar scanner transmits electromagnetic energy. Ensure that the

scanner has been installed according to the recommendations given in

Chapter 1, and that all personnel are clear of the scanner, before switching

to transmit mode.

Run through the radar operations described in the display unit Owner’s

Handbook and check that all the expected data is displayed.

154_1c3.p65 24/12/98, 08:5521

22 Pathfinder Radar Scanners

Bearing Alignment

When the system is correctly installed, you must check the bearing alignment to

ensure that targets appear at their correct bearing relative to the ship’s bow, and

adjust the alignment if necessary.

Display Timing Adjustment

The display timing can be affected by the length of the cable used to connect the

scanner to the display unit. This in turn affects the short range accuracy shown

on the display. If you have extended your inter-unit cable, you will need to

check the display timing before using the system for navigation.

154_1c3.p65 24/12/98, 08:5522

Appendix 1: Specification 23

Appendix A: Specification

2D 18" Radome Scanner Unit

General

Approvals

CE - conforms to 89/336/EEC (EMC), EN60945:1997

FCC - conforms to Part 80 (47CFR) and Part 2 (47CFR)

Dimensions Φ468 x 227mm (18.4 x 8.9in)

Weight 6.5kg (14.3lbs)

Input Voltage 8.7 - 32V DC (from display unit)

Power Consumption 28W (9W Standby)

Environmental Waterproof to CFR46

Temperature range: -10° to +55°C

Humidity limit: up to 95% at 35°C

Maximum wind speed for satisfactory operation: 100Kts

Maximum Range Scale 24nm

Transmitter

Transmitter Frequency 9410 +/– 30 MHz

Peak Power Output 2.0kW (nominal)

Transmitter Solid-state modulator driving Magnetron

Pulse Length/PRF 0.08ms/2250Hz (0.75nm or less)

0.25ms/1500Hz (above 0.75nm and less than 6nm)

0.70ms/750Hz (6nm or greater)

Standby Mode Magnetron heater and control left on, all other services off

Duplexer Circulator

Antenna

Antenna Type Patch array

Beam Width (nominal) 5.2° horizontal, 25° vertical

Polarisation Horizontal

Antenna Sidelobes Less than -22dB

Rotation Rate 24 rpm (nominal)

154_1ap1.p65 24/12/98, 08:5523

24 Pathfinder Radar Scanners

Receiver

IF Frequency 60MHz (nominal)

Receiver Characteristic Semi-log

Receiver Noise Figure Less than 5dB (including Low Noise Converter/Limiter)

Receiver Bandwidth Bandwidth 12/3/1 MHz

4D 24" Radome Scanner Unit

General

Approvals

CE - conforms to 89/336/EEC (EMC), EN60945:1997

FCC - conforms to Part 80 (47CFR) and Part 2 (47CFR)

Dimensions Φ599 x 227mm (23.6 x 8.9in)

Weight 7.5kg (16.5lbs)

Input Voltage 8.7 - 32V DC (from display unit)

Power Consumption 34W (10W Standby)

Environmental Waterproof to CFR46

Temperature range: -10° to +55°C

Humidity limit: up to 95% at 35°C

Maximum wind speed for satisfactory operation: 100Kts

Maximum Range Scale 48nm

Transmitter

Transmitter Frequency 9410 +/– 30 MHz

Peak Power Output 4.0kW (nominal)

Transmitter Solid-state modulator driving Magnetron

Pulse Length/PRF 0.08ms/2250Hz (0.75nm or less)

0.25ms/1500Hz (above 0.75nm and less than 6nm)

0.70ms/750Hz (6nm or greater)

Standby Mode Magnetron heater and control left on, all other services off

Duplexer Circulator

154_1ap1.p65 24/12/98, 08:5524

Appendix 1: Specification 25

Antenna

Antenna Type Patch array

Beam Width (nominal) 3.9° horizontal, 25° vertical

Polarisation Horizontal

Antenna Sidelobes Less than -22dB

Rotation Rate 24 rpm (nominal)

Receiver

IF Frequency 60MHz (nominal)

Receiver Characteristic Semi-log

Receiver Noise Figure Less than 5dB (including Low Noise Converter/Limiter)

Receiver bandwidth Bandwidth 12/3/1 MHz

154_1ap1.p65 24/12/98, 08:5525

26 Pathfinder Radar Scanners

154_1ap1.p65 24/12/98, 08:5526

Index 27

Index

Symbols

18" Radome

Specification 23

24" Radome

Specification 24

Alignment 21

Bearing 22

Bearing Alignment 22

Cable Runs 8

Cables

Extension 3

Extension - 18" Radome 11

Extension - 24" Radome 11

Extension - Radome 9

Inter-unit 3, 8

Inter-unit - Radome 8, 9, 14

Power 8

Power - Radome 10

Connections

Display Unit 19

Power 19

Radome Scanner 17

Radome Scanner 14

Scanner 18

System 17

Display Timing Adjustment 22

Electromagnetic Energy i, 21

EMC iii

Conformance iii

Installation Guidelines 2

Ferrite 2, 3, 15

Grounding the System 17

High Voltage i

Location 4

Mounting

Radome Scanner 13

Scanner

on Power Boats 5

on Sailboats 5

Setting the Radiation Plane 7

Navigation Aid i

Power

Cable 8

Cable - Radome 10

Connection - Radome 17

Connections 19

Radar System

Connections 17

Grounding 17

Item List 3

Typical System Diagram 1

Radome Scanner

18" iii, 1, 3

24" iii, 1, 3

Connecting 14

Mounting 13

Power Connection 17

154_1idx.p65 24/12/98, 08:5527

Pathfinder Radar Scanners

Safety i

Electromagnetic Energy i

High Voltage i

Navigation Aid i

Scanner i.

Flir BelgiumBA MTX2 Light Marine Radar User Manual Owners Handbook

Raymarine UK Ltd. Light Marine Radar Owners Handbook

Owners Handbook

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