Furuno 841 MARK-2 manual

Contents Marine Radar B . N o . O M E 3 4 4 4 Safety Instructions Do not operate the equipment with wet hands Do not open the equipmentStay away from transmitting antenna Do not disassemble or modify the equipmentUse the correct fuse IiiTable of Contents Foreword FeaturesDisplay Unit SpecificationsAntenna Unit Transceiver Module contained in radomeInterface Nmea Complete Set Installation Materials CP03-15xxAccessories FP03-05900 Equipment ListOptional Equipment Model 841 MARK-2 ConfigurationPrinciple of Operation How radar works Control Description Operation675NM 220.9R 0.646NM 308.7R Display Indications and MarkersTurning the Radar On and Off 5NMSelecting the Range Adjusting LCD Backlighting and Display ToneAdjusting Control Panel Brilliance TransmittingGeneral procedure Adjusting GAIN, STC, A/C Rain and FTCSTC MAN Auto How to tune manually Tuning the ReceiverAdjusting A/C Rain Adjusting FTCMeasuring the Bearing Measuring the RangePress the Menu key to open the menu. The main menu appears Menu OperationSee the table on the next Menu Function Menu description11 Display modes Selecting the Display ModeCU course-up Selecting the Presentation ModeWindow Display Course-up, you may select CU or WPT- UP, on the menuWPT-UP waypoint-up Guard AlarmSetting the guard zone Silencing the audible alarmSuppressing Radar Interference Canceling the guard zoneOff Centering the Display Suppressing Noise InterferenceSelecting Pulselength Navigation Data Display Echo TrailsTurning echo stretch on or off Setting up the nav data displayEcho Stretch magnifying long range echoes Press the Menu key Select Nav Data and press the ENT keyTurning on watchman Selecting Unit of Measurement for RangeSelecting Bearing Reference WatchmanDisplaying Navigation Data During Stand-by Canceling watchmanErasing the Heading Marker Deselecting RangesDisplaying Cursor Position, Range and Bearing to Cursor Visual Alarm IndicationsError Visual alarm Outputting Cursor Position to NavigatorSuper-refraction Interpreting the DisplayRadar Wave and Radar Horizon Target Properties and Radar Wave ReflectionMultiple echoes Bearing ResolutionRange Resolution False EchoesIndirect echoes Side-lobe echoesNautical Chart and Radar Picture Safety Information Maintenance & TroubleshootingReplacing the Fuse Preventative MaintenancePeriod Check point Remarks But Then TroubleshootingSelf Test Self TestSiting, handling considerations Antenna Unit InstallationMounting Parallel with the fore and aft line Holes for antenna unitMounting considerations Display Unit InstallationDisplay unit is designed to be mounted on a tabletop Mounting procedureConnections Signal cable connectionHeading Sensor Connection To connect external equipment to the OP- Tion connectorFor E/S Navigation aid, video sounder connectionRadar Installation Check ListDisplaying the Installation Menus Initial Adjustment of PictureFollow the procedure below to obtain proper radar picture Relative Bearing Alignment Entering Initial SettingsSweep Timing Press the Menu key and turn off the power Closing the Installation MenusPage Page Page Page Page Page