Furuno 841, 821 manual How to fasten the radome base To the mounting platform

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5)Make sure the vent tube is in the correct position, and then fasten the radome base to the mounting platform with four each of M10 x 20 hex bolts, flat washers and spring washers (supplied). Do not over- tighten the bolts; the tightening torque should be between 200 and 250 kg cm.

Radome base assy.

15 mm

5-10 mm

Flat

Platform

washer

Spring

washerM10 x 25 hex bolt

Figure 5-4 How to fasten the radome base

to the mounting platform

Wiring and final preparation inside the antenna unit for MODEL 821

1)Drill a hole of at least ø27mm through the deck or bulkhead to run the signal cable between the antenna unit and the display unit.

2)Pass the cable through the hole. Then, seal the hole with sealing compound for waterproofing.

3)Unfasten the cable gland and pass the signal cable through the hole at the rear of the radome base. The cable has three plugs which you connect to the antenna unit.

4)Secure the cable with the cable clamp- ing plate and gaskets. Fasten the shield to one of the fixing screws for the cable clamping plate to ground the shield.

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Contents Marine Radar First Edition AUG Ground both the Display Unit and the Antenna Unit Safety ArrangementsElectrical Shock Hazard Useable EnvironmentTable of Contents Features ForewordTransceiver Module contained in radome SPECIFICATIONS- ModelAntenna Unit Display UnitWarm-up time Modulator switching method Power supply & power consumptionProtection features VibrationAmbiont temperature Receiver front end MIC Michoeave IC Bandwidth 7 MHz DuplexerInterface Nmea Model 821/841 Page Configuration Model 821/841Principle of Operation How radar works Operation Control DescriptionDisplay Indications and Markers Turning the Radar On OffTransmitting Adjusting LCD Backlighting and Display ToneAdjusting Control Panel Brilliance Selecting the RangeAdjusting GAIN, STC, A/C Rain and FTC STC MAN AutoAdjusting FTC Tuning the ReceiverAdjusting A/C Rain How to tune manuallyMeasuring the Range Measuring the BearingMenu Operation Target on collision course with your vessel?Menu description Selecting the Display Mode 11 Display modesSelecting the Presentation Mode Window DisplayCU course-up Guard Alarm WPT-UP waypoint-upSuppressing Radar Interference GuardSuppressing Noise Interference Off Centering the DisplaySelecting Pulselength Echo Trails Navigation Data DisplayEcho Stretch magnifying long range echoes Press the Menu key Select Nav Data and press the ENT keySelecting Unit of Measurement for Range Selecting Bearing ReferenceWatchman Erasing the Heading Marker Deselecting RangesDisplaying Navigation Data During Stand-by Visual Alarm Indications Outputting Cursor Position to NavigatorDisplaying Cursor Position, Range and Bearing to Cursor Target Properties and Radar Wave Reflection Interpreting the DisplayRadar Wave and Radar Horizon Super-refractionBearing Resolution Range ResolutionFalse Echoes Multiple echoes Nautical Chart and Radar Picture Blind and shadow sectorsForming any maintenance or Maintenance & TroubleshootingSafety Information Troubleshooting procedurePreventative Maintenance Replacing the FuseTroubleshooting Troubleshooting tableSelf Test Self TestInstallation Antenna Unit InstallationRemoving packing materials Mounting platformVent tube How to fasten the radome base To the mounting platform Ships bow Removing packing materials 10 Antenna unit Model 841, inside view, shield cover removed 12 Optional mounting bracket installation for sailboat Display Unit Installation 13 How to mount the display unit 14 Display unit, rear view Option connector ProcedureInstallation Check List Initial Adjustment of Picture Displaying the Installation MenusEntering Initial Settings Relative Bearing AlignmentClosing the Installation Menus Sweep TimingSignal cable connection Page Page Page Page Page Page Page