Raymarine gs series Installation Instructions Manual

Also see for gS125 inverted: Operation instructions Operation instructions Installation and operation instructions

Contents

Raymarine gs series Installation Instructions Manual Manual pdf 89 page image

• Horizontal Dilution of Precision (HDOP)— HDOP is a measure of satellite navigationaccuracy, calculated from a number of factorsincluding satellite geometry, system errors inthe data transmission and system errors in thereceiver. A higher figure signifies a greaterpositional error. A typical receiver has an accuracyof between 5 and 15 m. As an example, assuminga receiver error of 5 m, an HDOP of 2 wouldrepresent an error of approximately 15 m. Pleaseremember that even a very low HDOP figure isNO guarantee that your receiver is providing anaccurate position. If in doubt, check the displayedvessel position in the Chart application againstyour actual proximity to a known charted object.• Estimated Horizontal Position Error (EHPE)— EHPE is a measure of the estimated error ofa position fix in the horizontal plane. The valuedisplayed indicates that your position is within acircle radius of the stated size 50% of the time.• Fix status — indicates the actual mode thereceiver is reporting:– Fix — Satellite fix has been acquired.– No Fix — No satellite fix can be acquired.– D Fix — A differential beacon fix has beenacquired.– SD Fix — A differential satellite fix has beenacquired.• Position — Displays the latitude and longitudeposition of your receiver.• Date / Time — Displays the current date and timegenerated by the position fix in UTC format .• Mode — Identifies wether the receiver is workingin differential mode or non-differential mode.• Datum — The receiver's datum setting affectsthe accuracy of the vessel position informationdisplayed in the Chart application. In order for yourreceiver and MFD to correlate accurately with yourpaper charts, they must be using the same datum.7.3 Radar checkWarning: Radar scanner safetyBefore rotating the radar scanner, ensureall personnel are clear.Warning: Radar transmissionsafetyThe radar scanner transmitselectromagnetic energy. Ensure allpersonnel are clear of the scanner whenthe radar is transmitting.Checking the radarFrom the Radar application:1. Select Menu.2. Select Power so that On is highlighted.The Radar scanner will now initialize in standbymode. This process will take approximately 70seconds.3. Select Radar so that Transmit is highlighted.The radar scanner should now be transmittingand receiving.4. Check that the radar screen is operating correctly.Typical HD radar screenNote: The example above is representative of theenhanced output provided by a HD radar scanner.Points to check:• Radar sweep with echo responses are shownon screen.• Radar status icon rotating in top right handcorner of the status bar.Check and adjust bearing alignmentBearing alignmentThe radar bearing alignment ensures that radarobjects appear at the correct bearing relative to yourboat’s bow. You should check the bearing alignmentfor any new installation.System checks 89