Raymarine E120W Installation Manual

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Contents

Raymarine E120W Installation Manual Manual pdf 48 page image

42 E-Series Installation ManualPositional accuracy is dependent upon these parameters; in particular, the azimuthand elevation angles are used in a triangulation process to calculate your position.Horizontal Dilution of Position (HDOP) is a measure of this accuracy; a higher figuresignifies a greater positional error. In ideal circumstances, the figure should be in theregion of 1.0.When a connection has been successfully made, the GPS status icon inthe top right-hand corner of the screen reads FIX.If NO FIX is displayed, please refer to the Troubleshooting section onpage 49.The option to select differential or satellite differential fix is dependentupon the capabilities of the attached GPS. If your boat is equipped with a RaymarineGPS, the Differential GPS can be switched on or off using the appropriate soft key.Heading data checksIf your display is connected to a compass, autopilot or fast heading sensor, your boat’sheading will be displayed in the data bar. If heading data is not available your displaycan use COG data. This will however affect the operation of the following functions:• overlay a radar image over your chart.• orientate a radar image north-up.• MARPA.To linearize (‘swing’) your compass proceed as follows:1. Press MENU.2. Select the Compass Setup sub-menu.3. Press LINEARIZE COMPASS and follow the instructions displayed on screen. Wheninstructed to align heading, press the ALIGN HEADING soft key and then turn therotary control one click at a time to fine tune the heading.Chart application checksFor full functionality of chart applications, you need to ensure that position data isavailable at the display via SeaTalk, NMEA, SeaTalk2 or SeaTalk High Speed. To useyour chart as a navigation aid you will need a chart card (seepage 12) with theappropriate level of detail for the geographic area that you wish to navigate.Proceed as follows:1. Without a chart card installed, press PAGE.2. Select a full window chart application by pressing the associated key.3. Zoom out with the RANGE button until the world map is visible.4. To ensure that the display is responding to position data:i. Press FIND SHIP.D7453_1