Raymarine ST40 Manual

Important information

Although your ST40 instrument is designed to give accurate and reliable performance, it should serve only as an aid to navigation and should never lead to the erosion of good seamanship. Always maintain a permanent watch and be aware of situations as they develop.

Handbook information

To the best of our knowledge, the information in this handbook was correct when it went to press. However, the Raytheon policy of continuous product improvement may change product specifications without notice. Consequently, unavoidable differences may occur between the product and the handbook from time to time, for which Raytheon cannot accept liability.

This instrument is designed to provide reliable performance, even under the most demanding conditions.

Parts supplied

Note: The items shown here are supplied for an ST40 Compass system. If an instrument is purchased separately, a transducer is not included. If any item is not present, contact your Raytheon Dealer.

Operation

Introduction

Your ST40 Compass instrument:

• Provides true and magnetic bearing information.
• Enables a locked bearing to be defined either manually, or automatically by a course computer. In this mode, the instrument shows the deviations from the locked bearing and the direction to steer to achieve the locked bearing.

Your instrument is calibrated to factory (default) settings when first supplied and must therefore be calibrated before use, to ensure optimum performance on your vessel. Do NOT use the instrument until the calibration procedures have been satisfactorily completed, using the procedures in Chapter "Calibration".

Coloured bezel and Desktop Mounting Bracket options are available for your ST40 instrument. Contact your Raytheon dealer for further information.

Operating procedures

Operating information is presented in flow chart form. The flow charts show the various operating screens and key presses necessary to carry out the various instrument functions. Key presses are momentary unless otherwise stated.

Silencing alarms

To silence an alarm (see the Alarms section, later in this chapter), momentarily press any one of the instrument keys.

NORMAL OPERATION

Note:
The Off course alarm screen is temporary and will time-out to the Compass heading screen after 5 seconds.
Only available on master instruments.

Backlighting and contrast adjustment

Hold down for 1 second to enter Adjust Backlight mode for 2 seconds to move through Adjust Backlight mode and enter Adjust Contrast mode

Screen descriptions

Compass heading screen

Locked heading screen

Alarms

Off course active alarm

Enabling/disabling alarm

You can enable or disable the off course alarm function (i.e. switch it on or off ) by selecting the Set off course alarm threshold screen (see Normal operation) and holding down the key for 3 seconds (toggle action).

Man overboard alarm (repeated)

The man overboard (MOB) alarm is initiated by other SeaTalk instruments and will be displayed on the ST40 Compass instrument only if the instrument is part of a SeaTalk system. The MOB alarm cannot be cleared from the ST40 Compass instrument.

Maintenance and Fault Finding

Maintenance

Servicing and safety

• Raytheon equipment should be serviced only by authorised Raytheon service technicians. They will ensure that service procedures and replacement parts used will not affect performance. There are no user-serviceable parts in any Raytheon product.
• Some products generate high voltages, so never handle the cables/ connectors when power is being supplied to the equipment.
• When powered up, all electrical equipment produces electromagnetic fields. These can cause adjacent pieces of electrical equipment to interact with one another, with a consequent adverse affect on operation. In order to minimise these effects and enable you to get the best possible performance from your Raytheon equipment, guidelines are given in the installation instructions, to enable you to ensure minimum interaction between different items of equipment, i.e. ensure optimum Electromagnetic Compatibility (EMC).
• Always report any EMC-related problem to your nearest Raytheon dealer. We will use any such information to improve our quality standards.
• In some installations, it may not be possible to prevent the equipment from being affected by external influences. In general this will not damage the equipment but it can lead to spurious resetting action, or momentarily may result in faulty operation.
• Always switch off the power to Raytheon equipment before working on it.

When requesting service, please quote equipment Type, Model Number, Serial Number and, if possible, Software Release Issue. The Software Release Issue can be ascertained by means of the Intermediate Calibration facility, see Chapter "Calibration".

Instrument

Certain atmospheric conditions may cause a small amount of condensation to form on the instrument window. This will not harm the instrument and will clear after the instrument has been switched on for a short period.
Periodically clean your ST40 instrument with a soft damp cloth. Do NOT use chemical or abrasive materials to clean the instrument.

Transducer

Refer to the Installation and Maintenance instructions supplied with the transducer.

Cabling

Examine all cables for chafing or other damage to the outer shield and, where necessary, replace and re-secure.

Fault finding

Preliminary procedures

If you appear to have a problem, first check the security of the connections at the rear of the instrument and reconnect any that are loose.

Changes in the electronic environment may adversely affect the operation of your ST40 equipment. Typical examples of such changes are:

• Electrical equipment has recently been installed or moved aboard your vessel.
• You are in the vicinity of another vessel or shore station emitting radio signals.

Fixing faults

All Raytheon products are subjected to comprehensive test and quality assurance programmes prior to packing and shipping. However, if a fault occurs, the following guidelines may help to identify and rectify the problem.

Low battery

Action
Recharge your vessel's battery as soon as possible

Display blank

Action
Check fuse/circuit breaker.
Check power supply.
Check SeaTalk cabling and connector security.

No heading information

Action
Check the condition of the fluxgate compass transducer cable and the security of the connections.

SeaTalk information not being transferred between instruments	For example, backlighting level changes implemented at one instrument do not affect other instruments	Action Check security of SeaTalk connections between instruments. Check condition of SeaTalk cables. Isolate faulty instrument by disconnecting instruments one by one.
A group of SeaTalk instruments not working		Action Check the security of SeaTalk connectors between functioning and non-functioning instruments.

Assistance

If you are unable to rectify any problem, please contact your local Raytheon Dealer for assistance.

Installation

This chapter describes how to install the ST40 Compass instrument, and associated Fluxgate Compass transducer.

Planning your installation

Determine the best positions for both transducer and instrument, such that the EMC installation guidelines and the Site requirements (below) are satisfied.

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 conform to the appropriate Electromagnetic Compatibility (EMC) standards, but correct installation is required to ensure that performance is not compromised. 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.

The guidelines given here describe the conditions for optimum EMC performance, but it is recognised that it may not be possible to meet all of these conditions in all situations. To ensure the best possible conditions for EMC performance within the constraints imposed by any location, always ensure the maximum separation possible between different items of electrical equipment.

For optimum EMC performance, it is recommended that wherever possible:

• All Raytheon equipment and cables connected to it are:
  • At least 1 m (3 feet) 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 2 m (7 ft).
  • More than 2 m (7 ft) from the path of a radar beam. A radar beam can normally be assumed to spread 20 degrees above and below the radiating element.
  • The equipment is supplied from a different battery from that used for engine start. Voltage drops below 10 V in the power supply to our products, and starter motor transients, can cause the equipment to reset. This will not damage the equipment, but may cause the loss of some information and may change the operating mode.
  • Raytheon specified cables are used at all times. Cutting and rejoining these cables can compromise EMC performance and so must be avoided unless doing so is detailed in the installation manual.
  • If a suppression ferrite is attached to a cable, this ferrite should not be removed. If the ferrite needs to be removed during installation it must be reassembled in the same position.

Suppression Ferrites

The following illustration shows typical cable suppression ferrites fitted to Raytheon equipment. Always use the ferrites supplied by Raytheon.

Connections to Other Equipment

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.

Tools required

The tools required for fitting the standard ST40 instrument system are shown in the following illustration.

Note: If you intend fitting a nonstandard transducer, extra tools may be required.

Site requirements

Fluxgate Compass transducer

The Fluxgate Compass transducer should be positioned as near as possible to the pitch/roll centre of the vessel, as shown in the shaded areas below.

Fluxgate Compass transducer siting

The Fluxgate Compass transducer must also be sited:

• At least 0.8 m (2 ft 6 in) away from the vessel's steering compass to avoid deviation in both compasses.
• On a bulkhead below deck.

Note: On steel vessels the Fluxgate Compass transducer can be mounted above deck. When mounted above deck, performance may be impaired due to increased motion.

• To allow reasonable access for installation and servicing.
• Away from any equipment or other installation which may shield the transducer or otherwise disturb the earth's magnetic field, e.g. large ferrous or magnetic items, engines, communications equipment or cabling.
• On a vertical mounting surface. Where necessary, make up a suitable nonferrous wedged packing piece to provide the necessary vertical surface.

Instrument

The presence of moisture at the rear of the instrument could cause damage either by entering the instrument through the breathing hole or by coming into contact with the electrical connectors.

Each instrument must be positioned where:

• It is easily read by the helmsman or navigator
• It is protected against physical damage
• It is at least 230 mm (9 in) from a compass
• There is reasonable rear access for installation and servicing
• The rear of the instrument is protected from water.

Procedures

Adapt these procedures as appropriate, to suit your individual requirement.

Where it is necessary to cut holes (e.g. for cable routing and instrument mounting), ensure that these will not cause a hazard by weakening critical parts of the vessel's structure. If in doubt, seek advice from a reputable boat builder.

Fitting Fluxgate Compass transducer

Introduction

Stand alone instrument
If you are fitting the ST40 Compass instrument as a stand alone instrument, you should also fit the Fluxgate Compass transducer and connect it directly to the instrument.

System requirements
If you intend fitting the ST40 Compass instrument as part of an instrument system, you must ensure that only one Fluxgate Compass transducer is connected to the system.

In such a system, the master steering compass instrument is the one to which the Fluxgate Compass transducer is directly connected. Other compass instruments in the system repeat information from this master.

Note: The Fluxgate Compass transducer can be connected to a course computer instead of a compass instrument. The course computer then provides the master compass information for the system.

Installation

Determine a suitable position for the Fluxgate Compass transducer, as described under Site requirements.

If you are not sure of the magnetic suitability of the chosen location, carry out a survey of the site as follows:

1. Temporarily fix a simple hand bearing compass at the intended location.
2. Swing the vessel through 360° while at the same time observing differences between the hand bearing compass and the vessel's main steering compass.
3. If there are no differences, greater than 10° on any heading, then the site is suitable for the Fluxgate Compass transducer.

Using the self-tapping screws provided, mount the Fluxgate Compass transducer vertically on a suitable bulkhead, so that the connecting cable is downmost.

Running transducer cable

Observing the following guidelines, run the transducer cable to the instrument:

• If the cable has to be fed through the deck, always use a good quality deck gland.
• Where cables are fed through holes, always use grommets to prevent chafing.
• Secure long cable runs so they do not present a hazard.
• Wherever possible, route the cable away from fluorescent lights, engines, radio transmitting equipment, as these may cause interference.

Connections to the instrument

You can connect your instrument:

• Directly to the compass transducer as a stand-alone master instrument. When connected in this manner, the instrument must be connected to a suitable power source using the 1 m (3 ft) power cable provided.
• As part of a SeaTalk system either as a repeater or, with a transducer also connected as a system master. To connect to SeaTalk, you will need an additional SeaTalk Interconnection Kit (Part No. E25028). When connected in this manner, power can be provided from the SeaTalk bus (e.g. from the autopilot).

Provided there is no other Fluxgate Compass already connected to SeaTalk, you can connect the instrument to both the compass transducer and SeaTalk. When thus connected, the instrument will be the master compass instrument for the SeaTalk system.

If it is necessary to fit spade connectors to the transducer cable, do so as shown in the following illustration. Prepare the cable, as at (a), and fit the spade connectors as at (b). When fitting each spade connector, ensure that wire strands do not extend beyond the rear of the spade connector insulation.

Preparing wires for connection

Stand-alone connections

Ensure that the power supply for each stand-alone ST40 instrument is protected by a 3 A fuse or circuit breaker.

Connections to a stand-alone instrument

SeaTalk connections

When instruments are connected to SeaTalk, ensure that the power supply for the SeaTalk 12 V line is protected by a 5 A fuse or circuit breaker.

Fitting the instrument

Fit your ST40 instrument as shown in the following illustrations.

1. Remove template from handbook (immediately after index), apply to required location and mark cutting centre.
   
2. Cut hole
   
3. Peel protective sheets from gasket
   
4. Stick gasket to rear of instrument
   
5. Screw stud into instrument
   
6. Feed cables through clamping bracket, connect cables then secure instrument with bracket and thumb nut
   

Desktop Mounting Bracket

An optional Desktop Mounting Bracket (Part No. E25024) enables you to mount your ST40 instrument in locations where other forms of mounting are impractical.

To bracket mount your ST40 instrument, do so in accordance with the Instruction Sheet, which is included with the Desktop Mounting Bracket.

Calibration requirement

Once installation is complete and before you use your instrument, carry out the calibration procedures detailed in Chapter "Calibration".

Calibration

Introduction

The procedures in this Chapter must be carried out before the equipment is used operationally, to optimise the performance of the instrument with the vessel.

Calibration information is presented in flow chart form. The flow charts show the various calibration screens and key presses necessary to carry out calibration. All key presses are momentary unless otherwise stated.

EMC conformance

• Always check the installation before going to sea to make sure that it is not affected by radio transmissions, engine starting etc.

User calibration

User calibration enables you to:

• Set the compass heading response values. Use higher response values for rapid updates in reasonable sea conditions (for example when you are trying to maintain a locked course). Use lower response values in choppy sea conditions to damp out unstable readings.
• Set the magnetic variation.
• Set the heading reference (magnetic or true).
• Linearise and align the compass.

Power up the instrument then follow the procedure in the User calibration flow diagram.

USER CALIBRATION

To save your settings and return to normal operation from any screen, hold down and for approximately 2 seconds

Intermediate calibration

Intermediate calibration enables you to:

• Check the instrument software version.
• Check the instrument status - either master (shown as RPTR NO) or repeater (shown as RPTR YES).

You cannot make any adjustments in Intermediate calibration.

Follow the procedure in the Intermediate calibration flow diagram.

INTERMEDIATE CALIBRATION

To return to normal operation from either screen, hold down and for approximately 2 seconds

Dealer calibration

Dealer calibration enables you to set:

• User calibration on/off.
• Boat show mode on/off.

Dealer calibration also gives access to the Factory defaults screen. This enables you to reapply the factory settings if you want to reset the instrument to a known operating condition.

Follow the procedure in the Dealer calibration flow diagram.

DEALER CALIBRATION

To save your settings and return to normal operation from any screen, hold down and for approximately 2 seconds

Instrument Specification

Supply voltage: 10 V to 16 V dc.

Current consumption (12 V supply):
20 mA typical.
60 mA with maximum backlighting.

Operating temperature: 0°C to +70°C.

Interfaces: SeaTalk.

Overall dimensions:
126 mm x 70 mm x 38 mm
(5.00 inches x 2.80 inches x 1.55 inches).

Boss diameter: 55 mm (2.20 inches).

Heading range: 0 to 359°.

Off course alarm: 2° to 30° (port or starboard).

Approvals:
CE - conforms to 89/336/EC(EMC), EN60945.
94/25/EC(RCD), EN28846 (applies to transducer only).

Documents / Resources

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