Furuno 841 MARK-2 manual Interface Nmea

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Stand-by (ST-BY), Echo Trail Time (TRAIL), Variable Range Marker (VRM), Range, Range Ring Interval, Range and Bearing to Cursor (+), Off Center (OFF CENTER), Watchman (WATCHMAN)

With navigation input (option): Course (CRS), Latitude and longitude, Speed (SPD), Range and bearing to waypoint (WP), Cross Track Error (XTE), Date and time, Water depth, Water temperature. (This radar has only two data input ports. To receive data from more than two equipment install an

mixing device.)

 

11. Vibration

 

Vibration freq.

Total amplitude

5 to 12.5 Hz

±1.6 mm

12 to 25 Hz

±0.35 mm

25 to 50 Hz

±0.10 mm

12.Ambient temperature

Antenna unit: –20˚C to +70˚C

Display unit: 0˚C to +60˚C

Due to the inherent nature of the LCD its contrast may be affected under ambient temperature below 0˚C (32˚F) or above 50˚C (122˚F).

13.Humidity

Relative humidity 95% or less at +40˚C

14.Waterproofing

Display unit: IEC Pub no. 529 IPX5

Antenna unit: IEC Pub no. 945 class X

15.Power supply & power consumption

12 V or 24V(10.2 V to 31.2 V DC),

40 W approx.

16.Protection features

Protection against reverse polarity, overvoltage, overcurrent, and internal fault

17.Compass safe distance

Unit

Standard

Steering

 

compass

compass

 

 

 

Display

0.7 m

0.5 m

 

 

 

Antenna

0.9 m

0.7 m

 

 

 

Interface NMEA

Input

Own ship’s position : RMA>RMC>GLL (GLL is available Ver.5 and after.)

Speed : RMA>RMC>VTG>VHW

Heading(True):

HDT>VHW>HDG>VHW>HDM

Heading (Magnetic): HDM>VHW>HDG>VHW>HDM

Course (True):

RMA>RMC>VTG

Course (Magnetic)

VTG>RMA>RMC

Waypoint (L/L, Range, Bearing):

RMB>BWC>BWR

Loran time difference :

RMA>GLC>GTD

Water depth : DPT>DBK, DBS, DBT

Water temperature : MDA>MTW

Time : ZDA

XTE : RMB>XTE>APB

Output

TLL : On using “HM OFF” key.

RSD : A cycle of four seconds

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Contents Marine Radar B . N o . O M E 3 4 4 4 Safety Instructions Stay away from transmitting antenna Do not open the equipmentDo not disassemble or modify the equipment Do not operate the equipment with wet handsUse the correct fuse IiiTable of Contents Foreword FeaturesAntenna Unit SpecificationsTransceiver Module contained in radome Display UnitInterface Nmea Accessories FP03-05900 Installation Materials CP03-15xxEquipment List Complete SetOptional Equipment Model 841 MARK-2 ConfigurationPrinciple of Operation How radar works Control Description OperationTurning the Radar On and Off Display Indications and Markers5NM 675NM 220.9R 0.646NM 308.7RAdjusting Control Panel Brilliance Adjusting LCD Backlighting and Display ToneTransmitting Selecting the RangeAdjusting GAIN, STC, A/C Rain and FTC General procedureSTC MAN Auto Adjusting A/C Rain Tuning the ReceiverAdjusting FTC How to tune manuallyMeasuring the Bearing Measuring the RangeMenu Operation Press the Menu key to open the menu. The main menu appearsSee the table on the next Menu Function Menu description11 Display modes Selecting the Display ModeWindow Display Selecting the Presentation ModeCourse-up, you may select CU or WPT- UP, on the menu CU course-upSetting the guard zone Guard AlarmSilencing the audible alarm WPT-UP waypoint-upSuppressing Radar Interference Canceling the guard zoneSuppressing Noise Interference Off Centering the DisplaySelecting Pulselength Navigation Data Display Echo TrailsEcho Stretch magnifying long range echoes Setting up the nav data displayPress the Menu key Select Nav Data and press the ENT key Turning echo stretch on or offSelecting Bearing Reference Selecting Unit of Measurement for RangeWatchman Turning on watchmanErasing the Heading Marker Canceling watchmanDeselecting Ranges Displaying Navigation Data During Stand-byError Visual alarm Visual Alarm IndicationsOutputting Cursor Position to Navigator Displaying Cursor Position, Range and Bearing to CursorRadar Wave and Radar Horizon Interpreting the DisplayTarget Properties and Radar Wave Reflection Super-refractionRange Resolution Bearing ResolutionFalse Echoes Multiple echoesIndirect echoes Side-lobe echoesNautical Chart and Radar Picture Safety Information Maintenance & TroubleshootingPreventative Maintenance Replacing the FusePeriod Check point Remarks But Then TroubleshootingSelf Test Self TestAntenna Unit Installation Siting, handling considerationsMounting 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 connectionFor E/S To connect external equipment to the OP- Tion connectorNavigation aid, video sounder connection Heading Sensor ConnectionRadar Installation Check ListInitial Adjustment of Picture Displaying the Installation MenusFollow the procedure below to obtain proper radar picture Entering Initial Settings Relative Bearing AlignmentSweep Timing Press the Menu key and turn off the power Closing the Installation MenusPage Page Page Page Page Page