Simrad SIMRAD HS50 manual Run mode, Heading offset

Page 39

 

 

INSTALLATION

 

Run mode:

Used for switching the HS50 between

 

 

NORMAL and DEMO mode.

 

 

DEMO mode is used for simulating input data

 

 

to the system.

WARNING!

The HS50 must not be switched to DEMO mode when

 

the system is in operation!

 

Log data, Server address, User name and Password:

 

 

Used for service purpose.

Caution!

A change in Expert setup parameters (except Head offset and

 

Alarm sound) will not take effect before the HS50 is restarted.

 

Heading offset

 

The Head offset feature allows you to correct for a constant

 

compass heading offset that may be present as a result of an off

 

axis misalignment between the Sensor unit and the vessel

 

alongships axis.

 

Note!

It is important that the Sensor unit is mounted accurately in the

 

alongships direction so the Head offset value does not exceed

 

±5°. If the mounting orientation is not within these tolerances

 

the heading accuracy will be degraded. Instead of exceeding a

 

Head offset value of ±5° the Sensor unit orientation should be

 

adjusted mechanically.

The system has to be calibrated on board the vessel after installation. A typical calibration consists of calibrating the direction of GPS antennas within the Sensor unit against an external reference. Type of reference must be decided according to the required accuracy. Alternative references for calibrating the heading offset of the Sensor unit could be:

The heading of the pier or quay the vessel is moored to.

An external compass reading like from a gyro compass.

Two fixed points on the chart that the vessel is sailing between.

The observation period for the heading difference should continue for an as long as possible period in order to eliminate errors in the HS50 measurements caused by multipath effects. These may be particularly pronounced in the static conditions of a harbor area.

20221081 / F

31

Image 39
Contents Simrad HS50 Heading Sensor Copyright 20221081 / F Document revisions Contents Operating Instructions Figures and Drawings This page Intentially Left Blank HS50 System components Introduction20221081 / F About this manual Definitions, abbreviations and acronymsDefinitions Nmea Abbreviations and acronymsHealth, environment and safety Restrictions in guaranteeRestrictions in use Display unit Physical dimensionsPerformance data Sensor unitPower Environmental specificationProcessing unit Cable InterfaceProcessing unit to sensor unit cable General Cable connectionGrounding Location of the unit Sensor unitMechanical installation Bracket mounting option Pedestal mounting option Cable wiringDisplay unit Waterproofing the connectorsAlternative panel mounting Panel mountingBracket mounting option Display unit cable Processing unit Cable connections Display Unit Sensor Unit Connecting to Simrad equipment RGC Signal Interface unitAP9MK3 Autopilot J50/J300X Junction unit NI300XIS15 Instruments Simrad RA40/RA50 Radar RGC12 Gyro CompassSoftware setup procedure Example Display AdjustmentsDifferential corrections All six serial lines may be used simultaneously Data outputGeneral EthernetDatum Height aidingVelocity filtering Radar formatHDT-Q Expert setupHeading offset Run modeExample Overview Operating InstructionsPerformance monitoring Turning the system ON/OFF348 Navigation/POS display Navigation/HDT displayHdop Pdop Info displaysGps hdt Deviation Accuracy Last heading Common sat Alarms Invalid Position alarm Invalid Heading alarmInvalid Position and Heading alarm Height aided GPS position OperationThis page Intentially Left Blank Periodic maintenance MaintenanceRe-calibration of the Sensor unit Software upgradesReplacing damaged units TroubleshootingRepairs and modifications Replacing damaged cablesNo valid data No responseInvalid Heading No Differential correctionsSimulated data Reduced heading indicationFigures and Drawings Seatex DimensionsKongsberg Seatex Sensor unit bracket, dimensionsSensor unit Processing unit, dimensions Display unit, dimensions Standard delivery Optional equipmentDocumentation