Gyro Compass Navigat x Mk1

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    Northrop Grumman Sperry Marine B.V. (Representative Office)Woltmanstr. 19 D-20097 Hamburg, Germany

    Tel.: +49-40-299 00-0 Fax: +49-40-299 00-146 E-mail: [email protected]

    Operation, Installation and Service Manual

    NAVIGAT X MK1

    Digital Gyrocompass Systems

    Type 4914-CA, Stock No. 74807 and Type 4914-CC, Stock No. 74811

    056343/B, 17 Nov 2006

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    NAVIGAT X MK 1 056343/B

    i

    Safety Instructions

    Safety Notice Conventions

    The following safety notice conventions are followed throughout thismanual:

    DANGER A Dangernotice contains an operating or main-tenance procedure, practice, condition, state-ment, etc., which, if not strictly observed, willresult in injury or death of personnel.

    WARNING A Warningnotice contains an operating ormaintenance procedure, practice, condition,statement, etc., which, if not strictly observed,

    could result in injury or death of personnel.

    CAUTION A Cautionnotice contains an operating or main-tenance procedure, practice, condition, state-ment, etc., which, if not strictly observed, couldresult in damage to, or destruction of equip-ment.

    Note A Notecontains an essential operating or main-tenance procedure, condition or statement,which is considered important enough to be

    highlighted.

    Special safety symbols may be used in thismanual to indicate:

    Risk of electrical shock.Used in conjunction with a Dangeror Warningnotice.

    Electrical components sensitive to electrostaticdischarge.

    Used in conjunction with a Cautionnotice.

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    056343/B NAVIGAT X MK 1

    ii

    General Safety Information for the Operator

    WARNING Never rely on one heading source alone to navigate a vessel.Always confirm the plausibility of the NAVIGAT X MK 1 heading and thespeed and position input data against all available aids to navigation.

    WARNING After a power-up from cold, the NAVIGATX MK 1 requires a settling timeof three hours before reliable heading data is available.Power up the system at least three hours before leaving harbour.Power down the system during long docking periods only.Make sure that the NAVIGAT X MK 1 has settled before using its headingas the reference for heading control systems, RADAR, ECDIS, etc.A magnetic heading source should be made active only in case of failureof the gyrocompass(es).

    WARNING Before using this system, operators must be appropriately trained andfamiliar with the operating procedures and safety instructions containedin this manual.Keep system manuals in a well-known, readily available location.

    CAUTION The supporting fluid in the gyrosphere container will start freezing attemperatures below 0 C.The NAVIGAT X MK 1 may no longer be operated when the ambient tem-perature at the gyrocompass location falls below 10 C while the com-pass is in operation or when the ambient temperature falls below 0 Cwhile the compass is not in operation.

    CAUTION Any service work on the gyrosphere is to be carried out by authorizedservice personnel only.

    CAUTION Do not clean the compass housing with organic solvents, acetone or anyother substance which could damage or discolour plastic.Use only soapy water or a mild detergent to clean the compass housing.

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    1-iii

    General Safety Information for Service Personnel

    DANGER When the compass is energized, the gyrosphere operating voltage of100 VAC @ 337 Hz is present on the master PCB, the gyrosphere supplylines, and across the gyrosphere contacts.

    When the AC main supply is switched on, live voltages are present at theline filter and the power transformers terminals.

    CAUTION The gyrosphere is always to be transported in its carrying box in the orig-inal transport container.Do not throw or drop the transport container.The transport container is to be transported in an upright position only.

    Carry the carrying box containing the gyrosphere by hand only and han-dle it with extreme care. Remove the gyroshpere from the carrying boxonly if required for immediate installation.

    CAUTION After power-down of the compass system, it may take up to 45 minutesfor the gyroscopes to stop rotating.During this time, the container must be handled with extreme care.Should the sphere touch the wall of the container, the momentum of therotating gyroscopes will make it topple and damage the center pin.

    CAUTION The NAVIGAT X MK 1 contains electrostatic sensitive components.

    Electrostatic discharge may permanently damage components.

    When servicing the NAVIGATX MK 1, take precautions to prevent elec-

    trostatic discharge. Avoid touching any of the electronic circuitry.

    CAUTION It cannot be guaranteed that parameter settings in the User and Setupmenus and the entries made in the Magnetic Compass Calibration tableare left intact when the software is exchanged.Before exchanging the system software IC, record all parameter settingsto be able to re-enter them manually, if required.

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    1-iv

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    v

    Contents

    Safety Instructions

    Safety Notice Conventions........................................................................... i

    General Safety Information for the Operator ............................................ ii

    General Safety Information for Service Personnel................................... iii

    Chapter 1: Introduction

    1.1 Design and Main Features........................................................................ 1-1

    1.2 Operating Principle ................................................................................... 1-2

    1.3 Example System Configurations ............................................................. 1-3Standalone Gyrocompass/TMC System ................................................. 1-3

    Dual NAVIGAT X MK1 Gyrocompass/TMC System................................ 1-4

    1.4 Technical Data............................................................................................ 1-5

    Chapter 2: Operation

    2.1 Operating Conditions ............................................................................... 2-1

    2.2 Display and Operating Keys ..................................................................... 2-2Control and Display Unit .......................................................................... 2-2

    2.3 External control devices ........................................................................... 2-3

    2.4 Power-up Sequence .................................................................................. 2-4

    2.5 Selecting the active heading source ....................................................... 2-5

    2.6 Adjusting the display brightness............................................................. 2-5

    2.7 Optional Functions....................................................................................2-6Muting Alarms Remotely.......................................................................... 2-6

    Reversing the Heading Display (180 offset)........................................... 2-6

    Resetting/Acknowledging a Central Watch Alarm.................................. 2-6

    2.8 Operating Menu ........................................................................................ 2-7Entering and Quitting the Main Menu..................................................... 2-7

    Navigating the Menu ................................................................................ 2-7

    Selecting Parameter Settings ................................................................... 2-8

    Editing Parameter Values ......................................................................... 2-82.9 Selecting a Display Data Page .................................................................2-9

    2.10 Manual Settings Menu ........................................................................... 2-10Manual Settings Overview .................................................................. 2-10

    Manual Settings Parameters ............................................................... 2-12

    2.11 User Setup...............................................................................................2-16User Setup Overview ........................................................................... 2-16

    User Setup Parameters ........................................................................ 2-17

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    Chapter 3: Errors and Alarms

    3.1 Alarm Indication ........................................................................................3-1Audible Alarm Indication .......................................................................... 3-1

    Visual Alarm Indication.............................................................................3-1

    3.2 Acknowledging Alarms/Muting the Audible Alarm...............................3-2

    Alarm Acknowledge..................................................................................3-2Alarm Mute ................................................................................................3-2

    3.3 Error messages ..........................................................................................3-3

    3.4 Service Info Menu (Service Setup 2) .......................................................3-5Service Setup 2 Access Code ................................................................ 3-5

    Service Setup 2 Overview......................................................................3-6

    Service Setup 2 Parameters...................................................................3-7

    Chapter 4: Scheduled Maintenance

    4.1 Maintenance by Shipboard Personnel ....................................................4-1

    4.2 Gyrosphere Maintenance Specifications ................................................4-118-Month Maintenance .............................................................................4-1

    Five-Year Maintenance..............................................................................4-2

    Chapter 5: Preventive Maintenance

    5.1 Protecting the Gyrosphere from Low Temperatures..............................5-1Removing the container from the compass housing ............................. 5-2

    Parts, materials and tools required.......................................................... 5-2

    Procedure ................................................................................................... 5-2

    Re-installing the container in the compass housing .............................. 5-4

    Parts, materials and tools required..........................................................5-4

    Procedure ................................................................................................... 5-4

    Power-up function test .............................................................................. 5-6

    Procedure ................................................................................................... 5-6

    Chapter 6: Installation

    6.1 Mechanical Installation.............................................................................6-1Installing the Compass Housing .............................................................. 6-1

    6.2 Electrical Installation.................................................................................6-2AC Supply Power Configuration .............................................................. 6-2

    Wiring Up the System...............................................................................6-2

    6.3 Gyrosphere Installation ............................................................................6-3

    6.4 Initial System Configuration ....................................................................6-4

    6.5 Alignment Error Correction ......................................................................6-6Magnetic Compass Calibration ................................................................ 6-7

    Chapter 7: System Configuration

    7.1 Configuration Menu (Service Setup 1).................................................... 7-1Setup Access Code.................................................................................... 7-1

    Service-Setup 1 Overview...................................................................... 7-2Service Setup 1 Parameters................................................................... 7-5

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    7.2 Factory Settings Menu (Technical Pages) ............................................. 7-14Setup Access Code...................................................................................7-14

    Technical Pages Overview ....................................................................7-14

    Technical Pages Parameters ................................................................. 7-15

    8.2 Location of Parts on the Master PCB ......................................................8-2Exchangeable Components...................................................................... 8-3

    Connectors................................................................................................. 8-3

    Test Resistor / Trimpots............................................................................. 8-4

    Diagnostic LEDs......................................................................................... 8-4

    Chapter 9: Corrective Maintenance

    9.1 Exchanging the System Software ...........................................................9-1

    9.2 Replacing Socketed ICs ............................................................................ 9-2

    Appendix

    A Setup and Configuration Tables

    B Drawings

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    NAVIGAT X MK 1 056343/B

    Design and Main Features 1-1

    Chapter 1: Introduction

    1.1 Design and Main Features

    The NAVIGAT X MK 1 is a microprocessor controlled marine gyrocom-pass system with integrated automatic North speed error correction.

    As a gyrocompass, the system complies with IMO resolutions A.424(IX)and A.694(17) and with EN ISO 8728.The HSC-version (stock no. 74811) with a specially selected gyrospherealso complies with IMO resolution A.821(19).

    The rate of turn output of the NAVIGAT X MK 1 complies with IMO reso-lution A.526(13).

    The NAVIGAT X MK 1 has been type approved by the German Federal

    Maritime and Hydrographic Agency (BSH), in accordance with theMarine Equipment Directive (MED) 96/98/EC, as modified by Directive2002/75/EC.

    The single unit design with a polyurethane hard foam housing allowsthe gyrocompass to be installed on any bridge. If required, the operatingunit may be installed at a location remote from the compass or an addi-tional remote operating unit may be used.

    The unique method of supporting the gyrosphere by means of merebuoyancy ensures North stabilisation during short power failures. E.g.,after a three minute loss of power, no more than two degrees of devia-

    tion may be expected. Once power has been restored, the gyrocompasswill return quickly to the correct heading. The combined effects of thetwin rotors and the liquid damping system virtually eliminate latitudeerror.

    Heading is measured as a 13-bit absolute value with a digital shaftencoder. The high-speed follow-up system (follow-up speed up to100/s) ensures that accurate heading and rate of turn data is providedunder all operating conditions.

    Integrated monitoring of the supply powers, gyroscope current and thefollow-up system ensure secure and trouble-free operation.

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    1-2 Operating Principle

    1.2 Operating Principle

    The north-seeking element used in the NAVIGAT X MK 1 system is the

    gyrosphere, a hermetically sealed unit with a funnel-shaped recess,

    reaching from the outer skin down to its center.

    Inside the gyrosphere, two mechanically linked gyroscopes are

    mounted with their spin axes horizontal in a carrying frame. The gyro-scopes are allowed to turn around the vertical, but torsion bands effect a

    defined rest position, while a mechanical linkage ensures that the result-

    ant spin vector of the gyros remains stationary relative to the gyro-

    sphere. This twin gyro arrangement eliminates intercardinal roll error.

    Once the gyros have run up to speed, their resultant spin vector, and

    with it the sphere, settles in the direction of true North.

    Figure 1-1:

    The gyrosphere

    The top of the gyrosphere contains an annular damping trough, half

    filled with a viscous fluid. The fluid damps azimuthal oscillations of thegyroscope system. The oscillation period is tuned to the Schuler period

    of 84.4 minutes, so that heading errors during horizontal acceleration

    due to changes in speed and/or direction are prevented.

    The gyrosphere floats in a supporting fluid inside the gyrosphere con-

    tainer. Because the buoyancy of the sphere is a little greater than its

    weight, a bearing cup at the bottom of the recess is pressed against the

    centering pin and keeps the sphere exactly centered in the container.

    In order to make the gyroscope system pendulous, that is, to provide the

    gravity controlling moment, the gyrosphere is designed so that its cen-

    tre of gravity lies slightly below the centre of bouyancy.

    The gyroscopes are in fact squirrel-cage induction motors, which attain

    a speed of nearly 20000 rpm at a voltage of 100 VAC @ 337 Hz.

    In the Mod. 10/3 container, their supply power is applied through the

    electrolytically conducting supporting fluid, via the top and bottom con-

    tacts. In the Mod. 10/2 and Mod. 7/2 containers, the power is applied via

    the centering pin and the bottom contacts.

    A follow-up control circuit keeps the container aligned with the sphere at

    all times, thus heading can be derived from the containers orientation.

    While systems with the Mod. 10/3 container employ an optical pickoff to

    provide the follow-up control signal, systems with the Mod. 10/2 and

    Mod. 7/2 containers use a resistance bridge circuit, formed by the con-

    ducting paths from the contact pins in the container, through the sup-

    porting fluid and to the equator contact of the gyrosphere.

    centering pin

    N gyro

    gyro linkage

    damping trough

    S gyro

    gyrosphere shell

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    Example System Configurations 1-3

    1.3 Example System Configurations

    Standalone Gyrocompass/TMC System

    As a standalone system, the NAVIGAT X MK1 provides North-speederror corrected true heading as well as rate of turn data.

    If a fluxgate sensor, type 4863, or an electronic magnetic compass isinstalled, the NAVIGAT X MK 1 applies magnetic variation and distrib-utes magnetic heading data to external equipment (TMC function).The heading diff. alarm function permits to monitor the differencebetween the gyro and magnetic heading sources.In case of failure of the gyrocompass, the magnetic heading source maybe activated to provide an emergency heading reference for repeatersand other peripheral equipment.

    Figure 1-2:

    Standalone

    Gyrocompass/TMC

    system

    Magnetic

    Compass

    Position Receiver

    Speed Log

    Rudder Angle

    Feedback Unit(s)

    Status Signals In

    Ext. Gyrocompass

    ROT

    Serial Repeaters

    Equipment using

    serial input

    Equipment using

    6 step/ input

    Analogue

    R.o.T.

    Indicators

    Nav. Data

    Printer

    Status Signals Out

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    1-4 Example System Configurations

    Dual NAVIGAT X MK 1 Gyrocompass/TMC System

    The system shown in Figure 1-3below is the standard configuration fora dual NAVIGAT X MK 1 gyrocompass system.

    In addition to the two NAVIGAT X MK1 compasses, this system com-prises the NAVITWIN IV heading management system and the Switch-Over Unit Type 4932.

    By selecting the active heading source at the NAVITWIN IV, the operatordetermines which compasses data is distributed via the Switch-OverUnit to external equipment, such as heading control systems, RADAR,compass repeaters etc.

    The NAVITWINs heading diff. alarm function permits to monitor the dif-ference between any two of the available heading sources.The off heading alarm function permits to monitor the differencebetween the actual heading from the active source and the set heading

    order, as received from a heading control system or entered manually.

    Alarms generated locally by a NAVIGAT gyrocompass are indicated andmay be acknowledged at the NAVITWIN IV.In turn, the NAVITWIN IV transmits system-wide operational settingsand setup parameters to the NAVIGAT gyrocompasses.The available heading sources, the current source selection and the hdg.diff. threshold are also indicated at both gyrocompasses.

    If a magnetic heading source is installed, the NAVITWIN applies mag-netic variation and distributes the data to external equipment (TMCfunction). In case of failure of the gyrocompasses, the magnetic heading

    source may be activated to provide an emergency heading reference forrepeaters and other peripheral equipment.

    Figure 1-3:

    NAVIGAT Dual

    Gyrocompass System

    GYRO

    1

    GYRO

    2

    MAGN

    COMP

    246.8

    246.7

    247.0

    G1 Hdg.

    G2 Hdg.

    M Hdg.

    Source Sel.

    Status

    Alarm Status

    (Hdg. Diff, Off Hdg)

    G/ M Headings,

    RoT, and all other

    data/signals

    distributed via

    Switch-Over Unit

    Switch-Over Unit

    NAVITWIN IV

    G2

    M

    G1

    Note A system with one NAVIGATX MK 1 and one NAVIGAT 2100 fiber-opticgyrocompass is also possible in an otherwise identical configuration.

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    Technical Data 1-5

    1.4 Technical Data

    Accuracies

    heading:

    lin. mean settle point error

    static errordynamic error

    deviation after 3 min. power interruption

    0.1 secant latitude

    0.1 secant latitude 0.4 secant latitude

    < 2

    rate of turn 0.5/minute

    Operational Characteristics

    mean setting time < 3h

    max. follow-up speed 100/s

    freedom of roll and pitch

    - with container Mod. 10

    - with container Mod. 7

    40

    90

    MTBF 40 000 h

    Environmental Requirements

    ambient temperature, operation 10 to +55 C

    ambient temperature, storage

    (without supporting fluid)

    25 to +70 C

    environmental conditions / EMC in accordance w. IEC 60945

    Protection Grade

    according to IEC 60529/DIN 40050 IP 23

    Magnetic Clearance

    to standard magnetic compass 0.6 m

    to steering magnetic compass 0.4 m

    reduced, to standard magnetic compass 0.3 m

    reduced, to steering magnetic compass 0.3 m

    Power Supply

    supply voltage main: 115/230 VAC, 50/60 Hz;

    backup: 24 VDC (18-36 V), includ-

    ing automatic switchover to

    backup supply in case of main

    supply failure

    max. ripple content DC supply 4 Vpp; extreme values may not

    exceed 36 V or fall below 18 V

    power consumption:

    start-up

    operation

    each repeater compass

    AC: 125 VA; DC: 80 W

    AC: 75 VA; DC: 45 W

    7 W

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    1-6 Technical Data

    Dimensions and Weight

    width 404 mm

    height 520 mm

    depth 420 mm

    weight 25 kg approx.

    Data Inputs

    ext. gyro heading NMEA 0183 / IEC 61162-1or PLATH protocolor Lehmkuhl (1200, 2400, 4800 or9600 Bd.)

    magnetic heading NMEA 0183 / IEC 61162-1or PLATH protocolor NAVIPILOT

    position NMEA 0183 / IEC 61162-1

    speed NMEA 0183 / IEC 61162-1

    compass monitor NAVITWIN NMEA 0183 / IEC 61162-1

    Signal and Status Inputs

    magnetic heading,

    fluxgate sensor

    sin., cos. and ref. voltages from

    Sperry Marine fluxgate sensortype 4863

    speed, 200 pulse/nm connection to P.Gnd via ext. con-tact, momentary

    rudder angle feedback unit(2x; reads rudder angle for outputto NAVIPRINT)

    0 5 VDC return voltage fromfeedback potentiometer(s)

    steering mode status (auto/man) connection to P.Gnd via ext. con-tact, latching

    ext. heading reference sel.

    (gyro1/gyro2)

    connection to P.Gnd via ext. con-

    tact, latchingext. heading reference sel.(gyro/mag)

    connection to P.Gnd via ext. con-tact, latching

    ext. alarm acknowledge (mute) connection to P.Gnd via ext. con-tact, momentary

    status input port (log status orhdg. +180 function)

    connection to P.Gnd via ext. con-tact, latching

    404

    520

    420420

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    Technical Data 1-7

    Data Outputs

    serial repeater outputs

    (12x TTL + 3 x TTL)

    NMEA 0183

    sensor data outputs

    (3x RS-422)

    NMEA 0183 / IEC 61162-1

    FAST output NMEA 0183 / IEC 61162-1

    or PLATH protocol

    SUPERFAST output NMEA 0183 / IEC 61162-1

    or NMEA 0183 / IEC 61162-2

    or PLATH protocol

    NAVITWIN output NMEA 0183 / IEC 61162-1

    to ext. gyro / compass monitor

    NAVITWIN

    NAVIPRINT output serial data to nav. data printer

    Signal and Status Outputs

    6 step/ output (2 x) 3 phases, switched to 0V potential

    if active (minus switching),

    common positive;

    internal supply 24 VDC

    max. 18 W

    (1270 VDC phase voltage when

    ext. power supply is used)

    rate of turn, analogue 0.1999.9 mV//min;

    max. 10 V, 10 mA

    power failure/general alarm

    heading difference alarm

    max. ROT exceeded alarm,

    heading source sel. status

    status out to switch-over unit

    watch alarm acknowledge

    AC power status

    DC power status

    potential-free contact closures,

    each rated

    30 VDC/1.0 A,

    100 VDC/0.3 A,

    125 VAC/0.5 A

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    1-8 Technical Data

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    Operating Conditions 2-1

    Chapter 2: Operation

    2.1 Operating Conditions

    The permitted ambient temperature for the operation of the gyrocom-pass system is -10 +55 C.

    When the ambient temperature at the gyrocompass location falls below

    -10 C while the compass is in operation or when the ambient tempera-ture falls below 0 C while the compass is not in operation, the gyro-sphere container must be removed from the compass housing andstored in a place where the ambient temperature will not fall below 0 C.

    If no storage place is available where the ambient temperature will notfall below 0 C, the gyrosphere must be removed from the gyrospherecontainer to prevent possible damage by frozen supporting fluid.

    CAUTION The supporting fluid in the gyrosphere container will start freezing attemperatures below 0 C.The NAVIGAT X MK 1 may no longer be operated when the ambient tem-perature at the gyrocompass location falls below 10 C while the com-pass is in operation or when the ambient temperature falls below 0 Cwhile the compass is not in operation.

    CAUTION The gyrosphere may be removed from the gyrosphere container byauthorized service personnel only.

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    2-2 Display and Operating Keys

    2.2 Display and Operating Keys

    Control and Display Unit

    Figure 2-1:NAVIGAT X MK1

    control and display unit

    Display

    Operating Keys

    LCD Display: 4x20 character text display

    In normal operational mode, shows the available heading sources

    and the heading diff. alarm threshold.

    In menu mode: displays the currently active op. menu screen

    MENU/F1key: Calls up the main menu from normal operationalmode. When pressed in menu mode, returns to next higher menu

    level.When pressed simultaneously with theSHIFT key, the F1function isexecuted.

    Up () / F2 key: In menu mode, returns from the main menu to nor-mal operational mode. Within a sub-menu, scrolls up through avail-

    able pages on same menu level.

    When pressed simultaneously with theSHIFT key, the F2function isexecuted.

    Down () / F3 key: Calls up the Main Menu from normal operationalmode. Within a sub-menu, scrolls down through available pages on

    same menu level.

    When pressed simultaneously with theSHIFT key, the F3function isexecuted.

    SHIFTkey: Pressed with other key to call up keys SHIFTfunction.

    DIM+ / RESET key: Adjust the display brightness.When pressed simultaneously with theSHIFTkey, the RESETfunctionis executed.

    DIM- / ENTER key: Adjust the display brightness.When pressed simultaneously with theSHIFTkey, the ENTERfunc-tion is executed.

    5

    1

    2

    3

    6

    4

    7

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    External control devices 2-3

    2.3 External control devices

    Depending on the installation, external devices may be present whichremotely control certain functions of the NAVIGAT X MK1:

    An external device may be used to select the active source, i.e. the

    heading reference to be distributed to compass repeaters, headingcontrol system, RADAR, ECDIS etc.).

    An external selector switch may be used to reverse the heading(apply a 180 offset to the heading data), e.g. for operation in double-ended ferries.

    The audible alarm at the NAVIGAT X MK 1 the may be muted from aremote device, e.g. a central alarm panel.

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    2-4 Power-up Sequence

    2.4 Power-up Sequence

    The NAVIGAT X MK 1 is not equipped with a power switch. The gyro-compass powers up as soon as supply power is applied.

    Upon power up, the startup routine is executed:

    A startup screen is shown and a systemtest sequence is executed.

    When the system test has been passed, theNAVIGAT X MK 1 enters normal operationalmode. The display shows the heading datafrom the available compasses and theheading difference alarm threshold.

    The currently active heading source is indi-cated by an arrow symbol () next to thesources name.

    WARNING After a power-up from cold, the NAVIGATX MK1 requires a settling timeof three hours before reliable heading data is available.Power up the system at least three hours before leaving harbour.Power down the system during long docking periods only.Make sure that the NAVIGAT X MK 1 has settled before using its headingas the reference for heading control systems, RADAR, ECDIS, etc.

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    Selecting the active heading source 2-5

    2.5 Selecting the active heading source

    The operator may select one of the available heading sources as theactive source, i.e. the heading reference to be distributed to compassrepeaters, heading control system, RADAR, ECDIS etc.).

    Depending on the system configuration, the active heading source iseither selected from the NAVIGAT X MK 1 control and display unit (singleor dual gyrocompass systems) or from an external device such as aNAVITWIN compass monitor/heading management system, a NAVIPI-LOT heading control system or an external selector switch.

    2.6 Adjusting the display brightness

    To change the active heading source fromthe control and display unit

    Press the selector key next to the desiredsources heading display.

    The selected source is made active.

    Note If the system is configured for source selection from an external device,selection from the control and display unit is disabled.The active heading source can be changed in a manual steering modeonly.In automatic steering modes, source selection is disabled and an errorbeep sounds when an attempt is made to change the active source.

    WARNING Make sure that the NAVIGAT X MK1 has settled before using its headingas the reference for heading control systems, RADAR, ECDIS, etc.A magnetic heading source should be made active only in case of failureof the gyrocompass(es).

    The brightness of the display and keypad illumination is adjusted via the

    DIM+/DIM- keys:

    Press the DIM+ key to increase the illumina-tion brightness.Press the DIM-key to reduce the illumina-tion brightness.

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    2-6 Optional Functions

    2.7 Optional Functions

    The following functions may be available if the system is equipped withthe respective external controls and configured accordingly.

    Muting Alarms Remotely

    On alarm, actuate the mute control at a remote device (e.g. a centralalarm panel). The audible alarm is muted.

    Reversing the Heading Display (180 offset)

    To reverse the heading display, e.g. for operation on double-ended fer-ries, activate the 180 offset function at the associated external control.

    Resetting/Acknowledging a Central Watch Alarm

    If connected to a central watch alarm facility ('dead man alarm'), theNAVIGAT X MK 1 will automatically reset the watch alarm timer when-ever a key is pressed on the unit.

    Should a watch alarm be given, pressing any key at the NAVIGAT X MK 1will acknowledge the alarm and reset the watch alarm timer.

    Note A remotely muted alarm remains in the pending (unacknowledged) state.The alarm message is shown on the display until the alarm is acknowl-edged at the NAVIGAT X MK1 or the cause of the alarm is eliminated.

    Note The heading display may be reversed automatically in some installa-tions, e.g. when control is centrally transferred between fore and aftsteering stands.

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    Operating Menu 2-7

    2.8 Operating Menu

    The data display menu as well as the manual settings, user and servicesetup sub-menus are accessed through a multilevel operating menu.

    Entering and Quitting the Main Menu

    Navigating the Menu

    In the menu mode, the operator may navigate through the menu usingthe F1, F2, F3, Up/Down, Dim+/Dim- and MENUkey functions.

    From the normal operational mode,press the MENUor the Downkey toenter the menu mode.

    The main menu screen opens.

    From the main menu screen, press theUpkey to return to the normal opera-tional mode.

    The NAVIGAT X MK 1 returns to nor-mal operational mode.

    Press Shift-F1, Shift-F2or

    Shift-F3to go to the respec-tive sub-menu.

    Arrow symbols (/) at theright of the window indicatethat further pages are availa-ble at the same menu level.

    With the Downor Upkey,scroll to the next or previous

    page respectively.

    Press the MENUkey to returnto the next higher menulevel.

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    2-8 Operating Menu

    Selecting Parameter Settings

    A number of operational and setup parameters are set by selecting theappropriate option from a list.

    Editing Parameter Values

    A number of operational and setup parameters are set by editing anumerical value.

    Flashing up/down arrow symbols to the right of a parameter settingindicate that a selection can be made from a list of options:

    With the Up/Downkeys, select the requiredoption.

    Press Shift-ENTERto confirm and store theselection.

    MENUleaves the sub-menu withoutchanges.

    A flashing box cursor indicates that a parameters value is editable:

    With the Up/Downkeys, edit the character atthe current cursor position.

    With the Dim+/Dim-arrow keys, move thecursor forward/back to edit the next/previ-ous character.

    Press Shift-ENTERto confirm and store thenew value.

    MENUleaves the sub-menu withoutchanges.

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    Selecting a Display Data Page 2-9

    2.9 Selecting a Display Data Page

    The Display Data menu allows the operator to select one out of fivepages to permanently display relevant operational data, instead of thenormal heading display screen.The selected page is displayed until another page is selected or the Dis-

    play Data mode is quit.

    From the Main Menu, pressSHIFT - F1to go to the DisplayData sub-menu.

    With the Up/Downkeys, selectthe required page to display

    The following data pages areavailable:

    True heading (own gyroheading);Rate of turn;Correction mode and value.

    Magnetic comp. heading;Magnetic variation.

    Position Mode;LatitudeLongitude (in auto mode).

    Speed Mode;Speed value.

    Date (DD.MM.YY);Time (hh.mm).

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    2-10 Manual Settings Menu

    2.10 Manual Settings Menu

    The Manual Settings menu provides access to settings which the opera-tor may need to alter more or less frequently during normal operation.

    Manual Settings Overview

    Figure 2-2:

    Manual Settings

    Note In case a NAVITWIN compass monitor / heading management system isinstalled, the manual settings must be entered at the NAVITWIN.The NAVITWIN will overwrite any manual settings entered locally at theNAVIGAT X MK 1 control and display unit.

    SPEED/LATITUDE

    HDG. DIFF. ALARM

    MAGNETIC VARIATION

    SPEED/LAT MODE

    BETWEEN

    MODE

    AUTOSPEED MODE

    GY1 / GY2

    AUTO

    AUTO

    POSIT MODE

    man. lat. value:99:99.99 N 99:99.99 S

    SPEED/LAT SET

    man. speed value:0.0 99.9 kts.

    speed/latitude input settings

    heading difference alarm threshold

    mag. variation input settings

    MAN

    MAN

    MAN

    GY1 / MAG

    alarm threshold:0 99

    man. variation value:99.9 W 99.9 E

    GY2 / MAG

    OFF

    contd. on next page

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    Manual Settings Menu 2-11

    Figure 2-3:

    Manual Settings

    (cont.d)

    NORTH SP. ERR. CORR

    SET. NAVIPRINT

    SETTINGS ROT

    ON

    OFF

    NAVIPRINT

    TIME CONST. ROT

    PAP. SPEED

    HDG

    ON

    damping time constant:0.0 10.0 s

    60 mm

    30

    OFF

    150 mm

    180

    600 mm

    north speed error correction

    nav. data printer settings

    rate of turn time constant

    RUDDER

    9

    45

    70

    OFF

    MAX. VALUE ROT

    ROT alarm threshold:0 9999 /min

    contd. from previous page

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    2-12 Manual Settings Menu

    Manual Settings Parameters

    Speed/Latitude

    Speed/Lat Mode

    Selects the speed and position input modes.

    Speed Mode

    Selects the speed input mode.

    Settings: AUTO

    Speed data is read automatically from the serial data or the

    200 pulse/nm input

    MAN

    The actual speed value is entered manually

    Posit Mode

    Selects the position input mode.

    Settings: AUTO

    Position data is read automatically from the serial data input

    MAN

    The actual position is entered manually

    Speed/Lat Set

    Sets the manual input values for the speed and latitude.

    Values: speed: 0.0 99.9 kn

    latitude: 9000.00 N 9000.00 S

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    Manual Settings Menu 2-13

    Hdg. Diff. Alarm

    Magnetic Variation

    North Sp. Err. Corr.

    Sets the manual input values for the speed and latitude.

    BetweenSelects the heading sources to monitor.

    Settings: GY1/GY2Monitor difference between gyros 1 and 2

    GY1/MAGMonitor difference between gyro 1 and magnetic hdg.

    GY2/MAGMonitor difference between gyro 2and magnetic hdg.

    OFFHdg. diff monitoring is disabled

    Alarm thresholdSets the alarm threshold value.

    Value: 0 99

    Sets the magnetic variation input parameters.

    Mode

    Selects the magnetic variation input mode.

    Settings: AUTOMag. variation data is read automatically

    MANThe actual mag. variation value is entered manually

    Manual ValueSets the manual input value for mag. variation.

    Value: 99.9 W 99.9 E

    Selects the North speed error correction mode.

    Settings: ONAutomatic North speed error correction is enabled.

    OFFAutomatic North speed error correction is disabled.

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    2-14 Manual Settings Menu

    Set. NAVIPRINT

    Sets the operating parameters for the NAVIPRINT nav. data printer.

    NAVIPRINTTurns printing on and off.

    Settings: ONActivate output to printer

    OFFNo output to printer

    Pap. speedSets the paper feed speed.

    Settings: 60 mmprint at 60 mm/h (1 cm = 10 min.).

    150 mmprint at 150 mm/h (1 cm = 4 min.)

    600 mmprint at 600 mm/h (1 cm = 1 min.)

    Hdg.Sets the scaling of the heading graph.

    Settings: 30scale to show 30 to the left and to the right from the graphscentre (current print position shifts to centre when graph

    reaches margin)

    180scale to show 180 to the left and to the right from thegraphs centre (current print position shifts to the centrewhen graph reaches margin)

    RudderSets the scaling of the rudder angle graph.

    Settings: 9scale to show 9 to the left and to the right from the graphs

    centre. This setting provides a high-resolution recording ofsmall rudder movements and is useful for monitoring e.g.the steering behaviour of an autopilot.

    45scale to show 45. Standard setting for 45 steering gears.

    70scale to show 70. Standard setting for 70 steering gears.

    OFFdo not print rudder angle graph. Required setting if no rud-der angle feedback unit is connected to the compass.

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    Manual Settings Menu 2-15

    Settings ROT

    Sets the rate of turn input parameters.

    Time constant ROTSets the damping time constant for the analogue rate of turn output.

    The larger the time constant, the less short-time fluctuations will bepresent in the analogue rate of turn output voltage.

    Value: 0.0 10.0 s

    Max. value ROTSets the alarm threshold for the Max. Rate of Turn exceeded alarm.

    Value: 0.0 6000 /min.

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    2-16 User Setup

    2.11 User Setup

    The User Setup menu provides access to settings which the operatormay need to alter occasionally.

    User Setup Overview

    Figure 2-4:

    User Setup

    ON

    OFF

    TIME

    DATE/TIME

    MODE

    AUTO

    MAN

    DATE

    dd.mm.yy(day.month.year)

    hh:mm (hours:minutes)

    SOFTWARE VERSION

    master board:nn.n

    MAG. C. CAL.TABLE

    MAG. C. CAL.TABLE

    ENTER VALUES (F1)

    corr.value:-99.9 +99.9

    hdg. display:0.0 359.9

    entry #:0 49

    input date/time

    software version info

    magnetic compasscalibration table

    display board:nn.n

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    User Setup 2-17

    User Setup Parameters

    Date & Time

    Software Version

    Mag. C. Cal. Table

    Sets the date and time input parameters.

    ModeSelects the date and time input mode.

    Settings: AUTODate/time are read automatically from the serial data input

    MANThe current date and time are entered manually

    Man. DateSets the current date manually.

    Value: DD.MM.YY (current date in format day.month.year)

    Man. TimeSets the current time manually.

    Value: hh:mm (current time in format hours:minutes)

    Note If manual input is used, date and time must be set after each power-up.

    Displays the master and display board software version info.

    Settings: noneThe software version sub-menu is read-only.

    Sets the parameters for the magnetic compass calibration table.

    Mag. C. Cal. TableSwitches the automatic magnetic heading correction on or off.

    Settings: ONAutomatic correction is enabled

    OFFAutomatic correction is disabled

    Enter ValuesEnters the correction values into the magn. calibration table.

    Values: max. 50 pairs of heading and correction values

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    2-18 User Setup

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    Alarm Indication 3-1

    Chapter 3: Errors and Alarms

    3.1 Alarm Indication

    Audible Alarm Indication

    Single Beep: Invalid Action

    Continuous Beeping: Pending Alarm

    Visual Alarm Indication

    In case of a pending alarm, an alarm message is shown on the displaywhich specifies the type of alarm present.

    Figure 3-1:

    Alarm message

    (gyro failure)

    The message remains on the screen until the operator acknowledges thealarm or the cause of the alarm is no longer present.

    A single short beep indicates that the operator attempted tocarry out an invalid action.This is the case, e.g. if the operator tries to change the headingreference in an automatic steering mode or to activate a head-ing source from which no valid data is received.

    Continuous on-off beeping indicates that a pending (unac-knowledged) alarm is present.Simultaneously, an alarm message is displayed.

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    3-2 Acknowledging Alarms/Muting the Audible Alarm

    3.2 Acknowledging Alarms/Muting the Audible Alarm

    Alarm Acknowledge

    Alarm Mute

    To acknowledge a pending alarm at the NAVIGAT X MK 1:

    Press Shift-F1.

    The alarm message is cleared and the audiblealarm is muted.

    As long as the cause of the alarm is present, thealarm remains active. The currently activealarms may be viewed in the error list in theService Setup 2.

    Note When an alarm has been acknowledged, the ext. alarm status outputremains active until the cause of the alarm is eliminated.When the cause of an alarm is eliminated, the alarm is acknowledgedautomatically and the alarm status is cleared.The NAVIGAT X MK1 does not keep a history of past (inactive) alarms.

    To mute the audible alarm at the NAVIGAT X MK 1:

    Press Shift-Reset.

    The audible alarm indication is muted.

    The visible alarm indication is not cleared andthe alarm remains in the pending state until it isacknowledged by the operator.

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    Error messages 3-3

    3.3 Error messages

    The following table lists the error messages which may appear on thedisplay and in the error list when a system alarm is active.

    Table 3-1:

    error messagesMessage on

    Display

    Message in

    Error List

    Cause Corrective

    Action

    GYRO NFAILURE(N = own gyro

    ID)

    FAILURE GYRON

    The system can-not providegyro heading.Possible causesare defects ofthe gyrosphere,the follow-upsystem or theshaft encoder,or a defect of

    the hard- orsoftware on themaster PCB.

    If failed gyro isactive hdg.source, activateanother source,if available.Restart thegyrocompasssystem. If theerror persists,call an author-

    ized SperryMarine servicestation.

    GYRO NFAILURE(N = ext. gyro ID)

    FAILURE GYRON

    Loss of datafrom ext. gyroheading source.

    If failed gyro isactive hdg.source, activateanother source,if available.Check ext. gyroheading sourceand interface.

    MAGN.COMPASSERROR

    FAILUREMAGN.

    Loss of mag-netic headingdata from ext.source.

    Check mag-netic headingsource andinterface.

    SPEEDERROR

    FAILURE SPEED Loss of speeddata from ext.source.

    Check speeddata source andinterface.

    POSITIONERROR

    FAILURE POS. Loss of positiondata from ext.source.

    Check positiondata source andinterface.

    HEADINGDIFF. ALARM

    HEAD. DIFFALARM

    The monitoredheadingsources differby more thanthe set alarmthreshold.

    Check headingsources todeterminecause of the dif-ference.

    MAX ROTEXCEEDED

    MAX ROTEXCEEDED

    Max. Rate ofTurn alarmthresholdexceeded.Alarm remindsthe operator notto exceed pre-

    set thresholdduring turns.

    Prevent vesselfrom turningtoo fast orincrease thresh-old if unwantedalarms aregiven.

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    3-4 Error messages

    FAILURE ACSUPPLY

    FAILURE ACSUPPLY

    Loss of powerfrom main sup-ply.

    Check AC mainpower supply.

    FAILURE DCSUPPLY

    FAILURE DCSUPPLY

    Loss of powerfrom backupsupply.

    Check DCbackup powersupply.

    RECOM-MENDEDANNUAL MAIN-TENANCE DUE!(see manual)

    OPERATIONTIME

    Alarm given atpower-up ifmore than 18months havepassed sincelast gyrospheremaintenance

    Acknowledgealarm. Systemwill power-upnormally. Toensure trouble-free operation,it is highly rec-ommended tohave mainte-

    nance carriedout every 18months.

    NT COM FAULT NT COM FAULT Loss of inputdata from com-pass monitorNAVITWIN

    CheckNAVITWIN andinterface

    Message on

    Display

    Message in

    Error List

    Cause Corrective

    Action

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    Service Info Menu (Service Setup 2) 3-5

    3.4 Service Info Menu (Service Setup 2)

    The Service Setup 2 provides access to system status information whichis used during installation and for troubleshooting errors.Furthermore, an option is provided to reset the system without cyclingthe power (warm start).

    Service Setup 2 Access Code

    To prevent inadvertent or unauthorized changes to the system configu-ration, all service setup menus are protected by access codes.

    To access the Service Setup 2:

    Press Shift-F2to select "Service Setup".

    When prompted for the setup code:

    Enter code "610 "Press Shift-ENTERto confirm the code.

    The Service Setup 2 sub-menu opens.

    Call up the Main Menu

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    3-6 Service Info Menu (Service Setup 2)

    Service Setup 2 Overview

    Figure 3-2:

    Service Setup 2

    not implemented in current software release

    operation time since last gyroshpere service (hours)

    GYROSPHERE DATA

    OP. TIME COUNTER

    DATA LIST

    TEMPERATURE: gyrosphere ambient temperature

    PH. BRIDGE: phase bridge voltageGYRO CURR.: gyrosphere current

    gyrosphere operational data

    operation time counter

    list of operational data

    initiate system reset

    ERROR LIST

    RESET MK 1

    error messages

    number of errors

    list of active errors

    system reset (warm start)

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    Service Info Menu (Service Setup 2) 3-7

    Service Setup 2 Parameters

    Gyrosphere Data

    Op. Time Counter

    Data List

    The Data List is not implemented in the current software version.

    Error List

    Reset MK 1

    Displays the gyrosphere operating data.

    Displays: TemperatureThe ambient temperature around the gyrosphere container.

    Ph. BridgeThe follow-up circuit phase bridge voltage.

    Gyro Curr.The gyrosphere current.

    Displays the gyrosphere operation time counter.

    Displays: Operation time in hours since last gyrosphere maintenance.The operation time counter is reset to zero by field servicepersonnel during gyrosphere maintenance.

    Displays the currently active system alarms.

    Displays: Error messagesThe display alternates through the message texts of allactive alarms. If no errors are present, "No Errors" is dis-played.

    No. of errorsDisplays the total number of active errors.

    Initiates a system resets (warm start).The warm start is equivalent to powering the system down and upagain, except that the power is not cycled.

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    3-8 Service Info Menu (Service Setup 2)

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    Maintenance by Shipboard Personnel 4-1

    Chapter 4: Scheduled Maintenance

    4.1 Maintenance by Shipboard Personnel

    For maintenance work to be carried out by shipboard personnel, no setmaintenance schedule is required.

    The display front plate and the compass housing should be kept cleanand a regular visual inspection of cables and connectors should be car-ried out to detect any signs of damage or deterioration.

    4.2 Gyrosphere Maintenance Specifications

    The gyrosphere is the only component of the NAVIGAT X MK 1 whichrequires regular maintenance.

    18-Month Maintenance

    Sperry Marine recommends to have a regular gyrosphere maintenancecarried out by authorized service personnel every 18 months. During the18-month maintenance, the gyrosphere and the inner surface of the con-tainer are cleaned and all fluids are renewed. If necessary, the centeringpin is exchanged.

    CAUTION Do not clean the compass with organic solvents, acetone or any othersubstance which could damage or discolour plastic.Use only water and soap or a mild detergent to clean the compass.

    CAUTION Scheduled maintenance or service work on the gyrosphere is to be car-ried out by authorized service personnel only.

    Note If more than 18 months have passed since the last gyrosphere mainte-

    nance, a reminder message is displayed every time the gyrocompass ispowered up.This message indicates no malfunction but is intended to remind theoperator that the recommended maintenance interval has beenexceeded.When the reminder message is acknowledged, the gyrocompass willpower-up and commence normal operation. During the gyrospheremaintenance, the gyrosphere operation time counter is reset.

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    4-2 Gyrosphere Maintenance Specifications

    Five-Year Maintenance

    To ensure continued trouble-free operation and to minimize the risk offailure, Sperry Marine recommends that every five years, the gyro-sphere and the centring pin are exchanged by authorized service per-sonnel.

    Note The five-year exchange interval for the gyrosphere is to be regarded as arecommendation only. Under normal conditions, the gyrosphere is ableto operate flawlessly over a considerably longer period of time.

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    Protecting the Gyrosphere from Low Temperatures 5-1

    Chapter 5: Preventive Maintenance

    5.1 Protecting the Gyrosphere from Low Temperatures

    The permitted ambient temperature for the operation of the gyrocom-pass system is 10 to +55 C.

    When the ambient temperature at the gyrocompass' location falls below

    10 C while the compass is in operation or when the ambient tempera-ture falls below 0 C while the compass is not in operation, the gyro-sphere container must be removed from the compass housing andstored in a place where the ambient temperature will not fall below 0 C.

    If no such storage place is available, the gyrosphere must be removedfrom the gyrosphere container to prevent possible damage by frozensupporting fluid.

    Removal and storage of the container as a whole (with the gyrosphereinstalled), as well as later re-installation of the container may be carriedout by shipboard personnel.

    Removal of the gyrosphere from the container and re-installation of thesphere into the container may be carried out by authorized service per-sonnel only.

    CAUTION The supporting fluid in the gyrosphere container will start freezing attemperatures below 0 C.The NAVIGAT X MK 1 may no longer be operated when the ambient tem-perature at the gyrocompass location falls below 10 C while the com-pass is in operation or when the ambient temperature falls below 0 Cwhile the compass is not in operation.

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    5-2 Protecting the Gyrosphere from Low Temperatures

    Removing the container from the compass housing

    Parts, materials and tools required

    a 5mm hex key

    a No. 2 Philips-head screwdriver

    Procedure1

    DANGER When the compass is energized, the gyrosphere operating voltage of100 VAC @ 337 Hz is present on the master PCB, the gyrosphere supplylines, and across the gyrosphere contacts.

    Before removing the gyrosphere container, make sure the main andbackup power supplies to the compass are switched off and safe-guarded against accidental switching-on.

    CAUTION After power-down of the compass system, it may take up to 45 minutesfor the gyroscopes to stop rotating.During this time, the container must be handled with extreme care.Should the sphere touch the wall of the container, the momentum of therotating gyroscopes will make it topple and damage the center pin.

    When the container is temporarily stored away with the gyrosphereinstalled, pack it into its original transport box or another suitable outer

    package and make sure that:- the container is stored in an upright position,- the temperature at the storage location cannot fall below 0C,- the container is not moved, tilted or subjected to shock.

    1. Illustrations show the Mod. 10/3 gyrosphere container. All instructionsequally apply to the Mod. 10/2 and Mod. 7/2 containers.

    1. Unscrew the 5 mm hex-head screws of the compass housing doorand take off the door from the housing

    2. Disconnect the grounding strap between door and housing. Placethe door aside. If the door is put next to the housing, the keypadcable may be left connected to the master PCB.

    3. Unplug the gyrosphere supply andpickoff connector from its socket

    on the pickoff PCB.

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    Protecting the Gyrosphere from Low Temperatures 5-3

    4. Turn the bellows, until the largestof the three coupling seats in thebayonet collar points towards thefront of the housing.The seat is marked by a green doton the collar.

    5. Put both hands around the con-tainer and lift it up, so that the cou-pling tongues disengage fromtheir seats in the bayonet.

    6. While supporting the containerwith both palms, put the thumbson the rim of the collar, pull downon it and turn it to the left

    7. Gently lower the container. Thecoupling tongues slide down inthe grooves of the bayonet and thecontainer is released from the col-lar.

    8. Carefully remove the container from the housing and take it to itsstorage location.

    9. At the storage location, carefully place the container into its originaltransport box or another suitable outer package.

    10. Clearly label the packaged container and store it safely in an uprightposition, making sure that it cannot be moved, tilted or subjected toshock.

    11. Put the door in front of the housing and reconnect the groundingstrap.

    12. Fit the door back on the housing and tighten the retaining screws.

    13. Take the necessary precautions to make sure that the compassesmain and backup power supplies remain switched off while the con-tainer is not installed.

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    5-4 Protecting the Gyrosphere from Low Temperatures

    Re-installing the container in the compass housing

    Parts, materials and tools required

    a 5mm hex key

    a No. 2 Philips-head screwdriver

    Procedure1

    DANGER When the compass is energized, the gyrosphere operating voltage of100 VAC @ 337 Hz is present on the master PCB, the gyrosphere supplylines and across the gyrosphere contacts.

    Before installing the gyrosphere container, make sure the main andbackup power supplies to the compass are switched off and safe-guarded against accidental switching-on.

    1. Illustrations show the Mod. 10/3 gyrosphere container. All instructionsequally apply to the Mod. 10/2 and Mod. 7/2 containers.

    1. At the storage place, carefully unpack the gyrosphere container andtake it to the compass location.

    2. Unscrew the 5 mm hex-head screws of the compass housing doorand take off the door from the housing

    3. Disconnect the grounding strap between door and housing. Placethe door aside. If the door is put next to the housing, the keypadcable may be left connected to the master PCB.

    4. Gently turn the bellows, until the largest of the three coupling seats

    in the bayonet collar points towards the front of the housing. Theseat is marked by a green dot on the collar.

    5. Place the gyrosphere containerinto the compass housing with thelargest of the three couplingtongues located directly below thegroove in the collar. The tongue ismarked by a green dot on the con-tainer

    6. Put both hands around the con-tainer and lift it into the collar, so

    that the coupling tongues slideinto the corresponding grooves inthe bayonet.

    7. While supporting the containerwith both palms, put the thumbson the rim of the collar, pull downon it and turn it to the right

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    Protecting the Gyrosphere from Low Temperatures 5-5

    8. Gently lower the container. Thecoupling tongues engage into theirseats in the bayonet and the con-tainer locks in place by its ownweight.

    9. Plug the gyrosphere supply andpickoff connector into its socket onthe gyrosphere container.

    10. Check that the gyrosphere con-tainer turns freely around the verti-

    cal.

    11. Put the door in front of the housing, so that the keys can be oper-ated. If the keypad or display has been disconnected during gyro-sphere installation, reconnect it.

    12. The compass is now ready to be put into operation.Leave the housing door open to observe the settling of the gyro-sphere and proceed now with the power-up function test.

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    5-6 Protecting the Gyrosphere from Low Temperatures

    Power-up function test

    To verify the correct operation of the re-installed gyrosphere, the settlingbehaviour of the compass is to be observed.

    Procedure

    1. Power up the compass system.

    In case of a first-time installation where the basic configuration has

    not been carried out yet, alarms will be given at this point.Alarms caused by missing input data or an incomplete system con-figuration may be safely acknowledged to continue with the power-up function test.

    2. Observe the settling of the gyrosphere:

    The gyro motors will create a spinning noise which slowly butconstantly rises in pitch until the rotors reach their final speed.

    The follow-up system will turn the container quickly around thegyrosphere until the optical pickoff locks onto the motion ofthe sphere. From then on, the container will engage in a slowoscillatory motion around the vertical, following the motion ofthe sphere.

    The amplitude and speed of this motion will steadily decreaseuntil the sphere finally settles.

    DANGER When the compass is energized, the gyrosphere operating voltage of100 VAC @ 337 Hz is present on the master PCB, the gyrosphere supplylines and across the gyrosphere contacts.When operating the compass while the housing is open, do not touchthe master PCB, the connecting cables to the gyrosphere container orany conductive components on the container.

    A startup screen is shown and a systemtest sequence is executed.

    When the system test has been passed,the compass enters normal operationalmode. The display shows the headingdata from the available compasses andthe heading difference alarm threshold.

    CAUTION Should a GYRO FAILURE alarm be given at power-up, the compass isnot working properly.De-energize the system and visually check the connections to the gyro-sphere, the follow-up step motor and the shaft encoder.If the failure reoccurs when the compass is powered-up again, the instal-lation has not been carried out correctly or the gyrosphere is defective.

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    Protecting the Gyrosphere from Low Temperatures 5-7

    3. During the settling phase, periodically call up the gyrosphere datasub-menu from the Service Setup 2 (code 610), to observe the gyro-sphere current:

    If 45 minutes after power-up, a gyrosphere current above 300 mA is

    displayed in the gyrosphere data sub-menu, the value should beconfirmed by measuring directly at the 1 gyro current test resistoron the master PCB.

    The AC-voltage in mA across the test resistor equals the gyrospherecurrent in mA.

    4. After a settling time of at least 4 hours, verify that the compass hassettled to the correct heading:

    Directly after power-up, the gyro-sphere current should not exceed550 mA. The current will graduallyfall while the gyrosphere settles.

    Within 45 minutes after power-up,the gyrosphere current must havedropped below 300 mA.

    CAUTION If 45 minutes after power-up, the gyrosphere current has not droppedbelow 300 mA, the gyrosphere is not working properly.If visual inspection reveals no obvious cause of malfunction, the gyro-sphere is to be regarded defective and must be replaced.

    Note To verify the compass heading, the actual true heading of the vesselshould be known with an accuracy of 0.1.

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    5-8 Protecting the Gyrosphere from Low Temperatures

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    Mechanical Installation 6-1

    Chapter 6: Installation

    6.1 Mechanical Installation

    The NAVIGAT X MK 1 gyrocompass system comprises the compasshousing complete with installed base plate assembly and master PCB,the gyrosphere container, the gyrosphere and the installation andreplacement parts kit.

    The gyrosphere is contained in a carrying box, which is packed in atransport container. This transport container is completely suitable fortransport by air, sea, rail and road.

    Until installation, the carrying box containing the gyrosphere is to bestored in its original transport container. Upon installation, the carryingbox with the gyrosphere is to be removed from the transport containerand is to be carried by hand directly to the place of installation.

    Installing the Compass Housing

    The compass housing is to be attached to a level surface, e.g. a floor orconsole base by means of six M10 bolts or welding studs (to be suppliedby the shipyard). At the location of the compass, proper ventilation mustbe ensured and sufficient space provided for the housing to be openedand maintenance work to be carried out.

    For the amount of space required, the attachment points and the posi-

    tion of the cable inlets, refer to dimension drawing 4914-0112-02.

    In the horizontal plane, the compass may be installed at any angle withrespect to the vessels longitudinal axis.Alignment error (i.e. the angle between the compass and the vesselslongitudinal axis) is corrected electronically by setting the alignmenterror correction value in the Service Setup 1.

    CAUTION The gyrosphere is always to be transported in its carrying box in the orig-inal transport container.Do not throw or drop the transport container.The transport container is to be transported in an upright position only.

    CAUTION Carry the carrying box containing the gyrosphere by hand only and han-dle it with extreme care. Remove the gyroshpere from the carrying boxonly if required for immediate installation.

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    6-2 Electrical Installation

    6.2 Electrical Installation

    AC Supply Power Configuration

    The NAVIGAT X MK 1 is delivered prewired for connection to 230VAC.A wire link connects transformer terminal 5 to terminal 6.

    If the system is required to operate on 115 VAC, wire links must beinstalled to link terminal 4 to terminal 6 and terminal 5 to terminal 7.To gain access to the transformer, the master PCB and the baseplatemust be temporarily removed.

    Figure 6-1:

    AC supply power

    configuration links

    Wiring Up the System

    Wire up the system according to the connection diagrams and other rel-evant documents provided.

    DANGER When the AC main supply is switched on, live voltages are present at theline filter and the power transformers terminals.When the compass is energized (main and/or backup supply present),the gyrosphere operating voltage of 100 VAC @ 337 Hz is present on themaster PCB, the gyrosphere supply lines and across the gyrosphere con-tacts.When configuring the system for the vessels AC supply voltage, makesure the compass' main and backup power supplies are switched off andsafeguarded against accidental switching-on.

    3

    5

    6

    8

    9

    230 VAC

    115 VAC

    1

    2

    4

    7

    DANGER When the AC main supply is switched on, live voltages are present at theline filter and the power transformers terminals.When the compass is energized (main and/or backup supply present),the gyrosphere operating voltage of 100 VAC @ 337 Hz is present on themaster PCB, the gyrosphere supply lines and across the gyrosphere con-tacts.When wiring up the system, make sure the compass' main and backuppower supplies are switched off and safeguarded against accidentalswitching-on.

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    Gyrosphere Installation 6-3

    If installation-specific connection diagrams have been provided for agiven system, these supersede any connection information contained instandard connection diagrams.

    Ship's cables are directly connected to screw-down terminals on themaster PCB.

    Insert the ship's cables through the inlets at the sides of the compasshousing. Remove the outer cable covers, draw back the cable shieldsand fasten the cables with clamps or tie-wraps to the threaded studs ofthe inlet plates. Refer to dimension drawing 4914-0112-02.

    Keep all wires running inside the housing as short as possible. Avoid torun wires from one side of the housing to the other. Route wires con-necting to TB1 TB4 through the inlets on the left hand side of the hous-ing and wires connecting to TB5 TB7 through the inlets on the righthand side.

    6.3 Gyrosphere Installation

    When the compass housing has been mounted and the system is wiredup so far that supply power is available, works should continue with theinstallation of the gyrosphere into the gyrosphere container and themounting of the assembled container in the compass.

    Alternatively, the installer may wire up the system completely and carryout the initial system configuration before the gyrosphere is installed.

    The gyrosphere installation and service instructions are contained in a

    separate document delivered with the gyrosphere.

    CAUTION The gyrosphere may be installed by authorized service personnel only.

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    6-4 Initial System Configuration

    6.4 Initial System Configuration

    To make the system fully functional, the configuration parameters needto be set to the required values in the Service Setup 1. Additionally, theapplicable standard operational settings should be entered in the Man-ual Settings menu.

    If a magnetic heading source is connected to the NAVIGAT X MK 1, themagnetic compass calibration procedure should be carried out during asea trial, as described under "Magnetic Compass Calibration"below6.5.

    To configure the system:

    1. Check that the wiring has been carried out completely. All devicesconnected to data or signal in- and outputs should be operative.

    2. Energize the system at the vessel's switch and fuse unit.A startup message is displayed and the initial selftest is executed.

    3. Go to the Service Setup 1.

    4. Select the required system type and heading reference selection set-tings.

    5. In dual or triple gyro systems, assign the required compass ID.

    6. Select the required data formats for all devices connected to the datainputs. In G or GG type systems, disable the magnetic heading input,in G or GM type systems, disable the ext. gyro input.

    7. Select the required data output formats and the NMEA protocolstandard.

    8. If required, set the parameters for the analogue rate of turn output,the status in- and outputs and the rudder angle feedback inputs.

    To finalize the installation:

    1. Set the operational parameters the Manual Settings menu to suita-ble values. Wherever possible, automatic data input should beselected in preference of manual input.

    2. Enter the current date and time in the User Setup menu.

    DANGER When the compass is energized (main and/or backup supply present),the gyrosphere operating voltage of 100 VAC @ 337 Hz is present on the

    master PCB, the gyrosphere supply lines and across the gyrosphere con-tacts.When operating the compass while the housing is open, do not touchthe master PCB, the connecting cables to the gyrosphere container orany conductive components on the container.

    Note If the initial system configuration is carried out before the installation ofthe gyrosphere, the system will raise a gyro failure alarm at power-up.The alarm may be safely acknowledged at this point to continue with theinitial configuration.

    Note Do not change the factory-set shaft correction angle in the Service Setup1. The alignment error correction may be set to an approximate value atthis point. The existing alignment error, however, must later be deter-mined exactly and corrected as required.

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    Initial System Configuration 6-5

    3. After configuration, function-check the system with all connectedequipment in operation. Use the test mode in the Service Setup 1 tocheck the heading output to serial and 6 step/ repeaters and the ana-logue rate of turn output. The test mode is functional even if thegyrosphere is not yet installed.

    4. If not yet installed, the gyrosphere must now be installed and the

    proper function of the compass verified.

    5. To bring the gyrocompass system into working order, the existingalignment error must now be determined exactly and the error cor-rection applied as described under "Alignment Error Correction"below6.5.

    6. If required, determine the correction values for the magnetic head-ing and enter the magnetic compass calibration table as describedunder "Magnetic Compass Calibration"below6.5.

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    6-6 Alignment Error Correction

    6.5 Alignment Error Correction

    In order to obtain correct heading data, the existing alignment error (i.e.

    the angular difference between the compass orientation and the vessel's

    fore-and-aft axis) must be determined and the required correction

    applied. Alignment error is 0 if the sides of the compass housing run

    exactly parallel to the vessels longitudinal axis and the back of thehousing points dead ahead. The alignment error correction is carried out

    electronically by setting the correction value in the Service Setup 1.

    To carry out the alignment error correction:

    1. Determine the existing alignment error by comparing the compass

    heading with the vessel's true heading. The true heading must be

    known to an accuracy of at least 0.5.

    2. In the Service Setup 1, select the align error correction sub-menu.

    compass orientation

    vessel's fore-and-aft axis

    alignment error

    CAUTION The compass must have been in continuous operation for at least 4 hours

    before the alignment error can be determined accurately.

    If bearing repeaters are used to determine the true heading, these mustbe properly aligned to the vessel's fore-and-aft axis.

    3. Enter the required correction

    value. The correction value

    equals the alignment error with

    the sign reversed.

    Example:

    The vessels true heading is

    123.0, the compass displays

    123.4, the alignment error is

    therefore 0.4, thus, the required

    correction range is 179.9 to

    180.0.

    Note After correction of the alignment error, the compass is to display the ves-

    sel's true heading to an accuracy of at least 0.5.

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    Alignment Error Correction 6-7

    Magnetic Compass Calibration

    Ideally, the magnetic heading displayed at the NAVIGAT X MK 1 wouldexactly match the indication of the steering magnetic compass (at amag. variation of 0.0).In practice, however, deviations will occur between the steering mag-netic compass heading and the heading data transmitted by a fluxgatesensor or an electronic compass, as displayed at the NAVIGAT X MK 1.

    The NAVIGAT X MK 1 automatically corrects such deviations if a calibra-tion table has been stored and calibration is activated in the User Setup.

    Calibration Procedure

    The magnetic heading calibration is a two-step procedure.

    First, the existing deviations between the indication of the steering mag-netic compass and the magnetic heading displayed at theNAVIGAT X MK1 are determined. This requires that the vessel is swungvery slowly through a full circle so that for each 10 of magnetic com-pass heading (0, 10, ..., 350) the corresponding display value isobtained.

    Then, the resultant correction values are calculated and entered in themagnetic heading calibration table at the NAVIGAT X MK1. The calibra-tion table stores up to 50 entries (cal. no.s), each of which assigns acorrection value to a given magnetic heading (0, 10, ..., 350).

    Note If magnetic heading is received from an already calibrated source, suchas a NAVITWIN, NAVIPILOT or a self-calibrating electronic compass, cal-ibration at the NAVIGAT X MK1 is not required and must be disabled.

    CAUTION The magnetic heading calibration corrects deviations due to the com-

    bined effects of the magnetic environment, the particular sensor beingused and the receiving circuitry on the master PCB.Therefore, a new calibration must be carried out when:- the steering magnetic compass is exchanged or newly adjusted,- the magnetic heading sensor is exchanged and,- if a fluxgate sensor is used, when the master PCB is exchanged.

    It is strongly disapproved to use a true heading source, e.g. a gyrocom-pass, as the calibration reference.Also, it should not be attempted to correct residual deviations of a prop-erly adjusted magnetic compass by means of the calibration table.

    CAUTION The magnetic compass used as the calibration reference must be prop-erly installed and adjusted.The procedure should be carried out in calm seas only.

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    6-8 Alignment Error Correction

    Determining magnetic heading correction values

    1. Make sure that the magnetic variation is set to 0.0 in the ManualSettings menu.

    2. Make sure that the calibration is disabled (setting OFF selected inthe User Setup / Magn. Cal. Tab.)

    3. Select a manual steering mode.

    4. Commence a continuous, very slow and steady turn. The vesselmust be swung through one full circle (360) at least.

    5. While the vessel is turning, com-pare the indication at the steer-ing magnetic compass with themagnetic heading values shownon the NAVIGAT X MK 1 display.

    At every full 10 of steeringmagnetic compass heading (0,

    10, ... , 350), note the displayvalue.

    6. Enter the observed display val-ues in the magnetic heading cal-ibration table (blank formincluded in the appendix of thismanual).

    7. Calculate the required correc-tion value for each headingvalue.

    The correction value is the offsetwhich must be applied to agiven display value in order toobtain the steering magneticcompass heading.

    Example:steering magnetic compassheading = 0,display value = 0,8,correction value = 0,8.

    0

    Mag. Compass

    Heading

    Mag. HDGDisplay

    (uncalibrated)

    Correction

    Value

    10

    0

    Mag. Compass

    Heading

    Mag. Hdg.

    Display

    (uncalibrated)

    Correction

    Value

    10

    0

    Mag. Compass

    Heading

    Mag. Hdg.

    Display

    (uncalibrated)

    Correction

    Value

    10

    mag. hdg. display

    = correction value

    mag. compass hdg.

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    Alignment Error Correction 6-9

    Storing the magnetic heading calibration table

    1. Call up the User Setup and go to the Magn Cal Tab sub-menu.Press Shift-F1. (enter values)The calibration table entry sub-menu is shown.

    2. To enter the previously determined correction values:

    a) Using the Up/Downand Dim+/Dim-keys,enter the respective heading value.

    b) Press Shift-ENTERto confirm the value.

    c) Using the Up/Downand Dim+/Dim-keys,enter the corresponding correctionvalue.

    d) Press Shift-ENTERto confirm the value.

    3. To enter another pair of values, press Shift-F2.The table index count in the first line is increased by 1.Repeat the procedure from step 2.a) above until all correction valueshave been entered.

    4. Press MENUto quit the table entry sub-menu.

    To scroll through the list of entries, press Shift-F2.or Shift-F3respectivelyfrom within the table entry sub-menu

    To delete a pair of values, if required, go to the calibration table entrysub-menu and twice press Shift-RESETfollowed by Shift-ENTERto clear theheading and correction value entries.

    0

    Mag. Compass

    Heading

    Mag. Hdg.

    Display

    (uncalibrated)

    Correction

    Value

    10

    Note The calibration table is stored in the system's permanent memory. If thecomplete set of table entries is to be altered (e.g. when a new magneticheading sensor has been fitted or the steering magnetic compass hasbeen newly adjusted), delete the old entries from the table first.

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    6-10 Alignment Error Correction

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    Configuration Menu (Service Setup 1) 7-1

    Chapter 7: System Configuration

    7.1 Configuration Menu (Service Setup 1)

    The Service Setup 1 provides access to the system parameters whichconfigure the NAVIGAT X MK1 according to the requirements of theinstallation at hand.The Service Setup 1 also provides a test mode to check the proper func-tion of the serial and 6 step/ heading outputs and the analogue rate ofturn output.

    Setup Access Code

    To prevent inadvertent or unauthorized changes to the system configu-

    ration, setup menus which are to be accessed by service personnel onlyare protected by access codes.

    To access the Service Setup 1:

    Press Shift-F2to select "Service Setup".

    When prompted for the setup code:

    Enter code "600 "Press Shift-ENTERto confirm the code.

    The Service Setup 1 sub-menu opens.

    Call up the Main Menu

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    7-2 Configuration Menu (Service Setup 1)

    Service-Setup 1 Overview

    Figure 7-1:

    Service Setup 1 INTERFACE I/O

    MAG.HDG.INP.

    SIN/COS

    NMEA-HDM

    interface configuration

    SPEED INPUT

    200 Pulse/NM

    NMEA

    POS INPUT

    NMEA-GLL

    NMEA-GGA

    SENS.D.M.OUTP.

    NMEA-HCHDM

    NMEA-HCHDTNMEA-HCHDG

    S/FAST M.OUTP.

    NMEA-HCHDM

    NMEA-HCHDT

    MAGN. VARIATION

    NMEA-HDG

    NMEA-RMA

    NMEA-RMC

    NMEA SUPERFAST

    4800 BAUD

    9600 BAUD

    19200 BAUD33 Hz 38400 BD

    NMEA-HCHDT

    PLATH

    TxD NMEA FAST

    NMEA

    HCHDT

    HDT/ROT

    PLATH

    NMEA-HCHDT

    NMEA-HDG

    PLATH-MAGN

    NAVIPILOTCOMP.MONITOR

    GYRO INPUT

    PLATHLEHMK. 1200

    LEHMK. 2400

    LEHMK. 4800

    LEHMK. 9600

    NMEA-HDT

    OFF

    OFF

    50 Hz 38400 BD

    contd. on next page

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    Configuration Menu (Service Setup 1) 7-3

    Figure 7-2:

    Service Setup 1

    (contd.)

    1

    2

    sc. factor: 0.1 999.9 mV//min

    ANALOG ROT OUTP.

    FEEDBACK SIGNAL

    zero offset: -999 +999 mV

    corr. value: -179.9 +180

    corr. value: -179.9 +180

    sc. factor: 0.1 999.9 mV//min

    zero offset: -999 +999 mV

    sc. factor: 0.1 999.9 mV//minzero offset: -999 +999 mV

    SYSTEM TYPE

    ALIGN ERR. CORR.

    SHAFT COR. ANGLE

    SYSTEM

    G

    GM

    CDU 1+2

    COMP.MON

    AUTOPILOT.

    HDG. SEL

    CDU 1

    contd. from previous page

    system type / hdg. reference selection

    alignment error correction

    shaft encoder correction angle

    settings for rudder angle

    feedback units

    settings analog ROT output

    GG

    GGM

    EXT.SEL.

    No. OF RUDDERS

    SET RUDDER 1

    SET RUDDER 2

    contd. on next page

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    7-4 Configuration Menu (Service Setup 1)

    Figure 7-3:

    Service Setup 1

    (contd.)

    contd. from previous page

    sc. factor: 0.1 999.9 mV//min

    zero offset: -999 +999 mV

    time const.: 0.0 99.9 s

    TEST MODE

    rate of turn: -999 +999/min

    CHANGE SETTINGS

    heading value: 0.0 359.9

    indicator/repeater test mode

    ID-No. 1

    ID-No. 2

    ID-No. 3

    STATUS IN

    EXT. STATUS IN

    NAME OF GYRO

    STAT. HDG. +180

    ENABLE 180 OFFS.

    Gyro ID setting

    ext. status input function

    GYRO2 +180

    MAGN +180

    GYRO1 +180

    STAT. LOG

    IEC 61162-1

    GEN. ALARM SETUP

    PROTOCOL TYPE

    ON ALL ALARMS

    ON FATAL ALARMS

    conditions for actuation

    of general alarm relay

    NMEA