Furuno FR-8251, FR-8111 manual Categorization by Specification, Xiv

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CATEGORIZATION BY SPECIFICATION

This series of marine radars are designed to comply with the standards of various national rules and regulations. Operational convenience is enhanced with the two categories as below although the basic design approach is the same.

Function

R-type

N-type

 

 

 

Guard zone alarm

"In" or "Out" alarm

"In" alarm only

 

 

 

VRM/cursor unit of

nm, km, sm

nm only

readout

 

 

 

 

 

EBL/cursor bearing

True/relative, selectable

Head-up: relative

readout

in any mode

CU, NU, TM: true

 

 

 

Own ship mark

Available (symbol or dot)

Not available (dot only)

 

 

 

R-type: For fishing boats, pleasure boats, non-Convention cargo ships

N-type: For non-Convention ships in the Netherlands and other countries where the radars must be approved based on IMO A.477(XII), although not wholly.

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Contents Marine Radar 00080735211 Safety Information Do not diassemble or modify the equipment Radio Frequency Radation Hazard IiiUse the correct fuse Compliance with R&TTE Directive 1999/5/EC Table of Contents Maintenance Foreword Features Word to FR-8051/8111/8251 OwnersVii Configuration of FR-8051/8111/8251 Antenna Unit SpecificationsTransceiver Module Power Supply and Power Consumption Display UnitEnvironmental Conditions OthersStandard Set Equipment ListsXii Spare Parts Optional EquipmentXiii Categorization by Specification XivOperation Control DescriptionDisplay Indications 25 NMDisplay indications lower part Selecting Range Turning the Radar On/OffTransmitting, Stand-by Presentation Mode Selecting presentation modeDescription Basic menu operation Menu OverviewChanging pages on the Initial menu Menu tree MK Erase erase all fixed marksInitial Tune SET AUTO, Manu SPD Mode MAN, LOG, NAV Tuning the Receiver Adjusting SensitivityAdjusting Picture Brilliance Selecting tuning modeAdjusting Brilliance of Control Panel and Markers Adjusting Range Ring BrillianceSuppressing Sea Clutter Automatic anti-clutter controlSuppressing Rain Clutter Heading and North MarkersMeasuring the Range Measuring range by the range ringsMeasuring Bearing Canceling the cursor offset Collision Assessment by Measuring Range Offset EBLIndex Lines Off-centering the PictureInscribing Marks on the Display ZoomFunction key Turning on a function Own Ship SpeedAutomatic speed input Ship’s Graphic Interference RejectorEcho Trails Manual speed inputCanceling echo trail Starting echo trailTrail time Trail referenceTrail brilliance Electronic Plotting E-plotPlotting a target Canceling target plotting Target dataTrue or relative vector Vector timeSetting a Guard Alarm Zone Setting a guard zoneSelecting guard zone type Activating the guard zonesWatch Alarm Silencing the aural alarmCanceling the guard zone and guard alarm How to turn on echo averagingSuppressing Second-Trace Echoes 26 Echo averagePresetting pulselength Echo StretchNoise Rejection Selecting PulselengthOutputting Cursor Position TLL data Waypoint DisplaySelecting pulselength set to use Selecting Unit of Range Measurement, Bearing Reference Alarm Output Signal On/OffSector Blanking This page is intentionally left blank Radar Observation Range ResolutionRadar Picture, Target Properties and Radar Pulse Bearing Resolution False EchoesIndirect echoes Multiple echoesMinimum and Maximum Ranges Side-lobe echoesMinimum range Blind and shadow sectorsLocating a Ship or Survival Craft in Distress by Sart Gain This page is intentionally left blank Maintenance When Working on the Antenna UnitPeriodic Maintenance Schedule Troubleshooting Simple TroubleshootingAdvanced-level Troubleshooting Serviceman qualificationProblem Check point and probable Remedy Cause Problem Check point and probable Remedy Cause Diagnostic Test Diagnostic test, test patternThis page is intentionally left blank Location of Parts Antenna UnitRF Transceiver Unit Modulator TriggerRF transceiver unit FR-8051/8111 Display Unit common to all models Display unit, top viewDisplay unit, right side view This page is intentionally left blank Performance Monitor Operating a performance monitorVideo Plotter RP-15 Auto Plotter ARP-15Fluxgate Heading Sensor C-2000 Page

FR-8251, FR-8111 specifications

Furuno has long been a leader in marine electronics, and its FR-8251 and FR-8111 radar systems continue that tradition. Both are advanced systems designed specifically for professional mariners who demand high performance, reliability, and technological sophistication in their navigational tools.

The Furuno FR-8251 is a powerful radar system that boasts a range of features tailored for commercial vessels. With a 25 kW transmitter, the FR-8251 delivers exceptional performance, providing a clearer and more detailed image of the maritime environment. It is equipped with advanced signal processing technology, including the Doppler processing feature, which allows for the detection of moving targets. This is highly beneficial for collision avoidance, as it provides accurate information regarding the speed and direction of other vessels.

Another noteworthy feature of the FR-8251 is its large, high-resolution display that enhances visibility and ease of use, even in challenging weather conditions. The user interface is straightforward, allowing for quick adjustments and easy navigation through the various settings. It supports a variety of display formats and allows for customization, enabling operators to tailor the information presented according to their specific needs.

On the other hand, the Furuno FR-8111 is equally impressive and designed as a more compact solution without sacrificing performance. This model comes with a 12 kW output and is specifically crafted for smaller vessels, yet it still delivers high-quality radar coverage. Utilizing Furuno’s renowned Automatic Target Tracker (ATT) technology, the FR-8111 enables mariners to efficiently track multiple targets, significantly enhancing situational awareness.

Additionally, both the FR-8251 and FR-8111 come with integrated ARPA (Automatic Radar Plotting Aid), providing users with sophisticated tools for navigation and collision avoidance. The presence of multiple target tracking empowers operators to make informed decisions, optimizing safety at sea.

Furuno’s commitment to reliability and durability is evident in both models, which are designed to withstand the harsh marine environment. Their robust build quality ensures longevity, while their advanced technologies offer peace of mind.

Both the Furuno FR-8251 and FR-8111 are excellent choices for professional mariners seeking cutting-edge radar systems. With their impressive performance, user-friendly interfaces, and advanced technologies, these radar systems set the standard in marine navigation, providing essential support for safe and efficient voyages.
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