Furuno FR-1710 manual Specifications of Marine Radar

Page 72

 

SPECIFICATIONS OF MARINE RADAR

 

 

FR-1710/1725/1760DS

1. ANTENNA RADIATORS

 

(1)

Type

Slotted waveguide array

(2)

Polarization

Horizontal

(3)

Rotation

24 rpm or 42 rpm (FR-1760DS: 24 rpm only)

(4)

Radiator length

4 ft (XN12AF), 6.5 ft (XN20AF), 8 ft (XN24AF)

 

 

8.1 ft (SN4A), 9 ft (SN5A)

(5)

Horizontal Beamwidth

 

 

-3 dB:

1.8° (XN12AF), 1.23° (XN20AF), 0.95° (XN24AF)

 

 

2.68° (SN4A), 1.23° (SN5A)

 

-20 dB:

3.1° (XN12AF), 3.1° (XN20AF), 2.5° (XN24AF)

(6)

Vertical Beamwidth

20°

(7)

Sidelobe attenuation

 

 

XN12AF:

-24 dB (within ±10° of main-lobe)

 

 

-30 dB (outside ±10° of main-lobe)

 

XN20AF/XN24AF:

-24 dB (within ±20° of main-lobe)

 

 

-30 dB (outside ±20° of main-lobe)

 

SN4A:

-23 dB (within ±20° of main-lobe)

 

 

-25 dB (outside ±20° of main-lobe)

 

SN5A:

-20 dB (within ±20° of main-lobe)

 

 

-25 dB (outside ±20° of main-lobe)

(8)

Antenna Gain

XN12AF: 27.5 dB, XN20AF: 30.0 dB, XN24AF: 31.5 dB

 

 

SN4A: 26.0 dB, SN5A: 26.4 dB

(9)

Wind Speed

51.5 m/s relative

2. RF TRANSCEIVER

 

(1)

Frequency

FR-1710/1725: 9410 MHz ±30 MHz

 

 

FR-1760DS: 3050 MHz ±30 MHz

(2)

Output Power

FR-1710: 10 kW, FR-1725: 25 kW, FR-1760DS: 60 kW

(3)

Spurious Response

-40 dB or less

(4)

IF Amplifier

60 MHz, Logarithmic

(5)Bandwidth

FR-1710/1725:Short 1/2, Middle 1 pulse: 27 MHz

Middle 2/3, Long pulse: 3 MHz

FR-1760DS:Short pulse: 27 MHz

Middle 1/2, Long pulse: 3 MHz

SP - 1

Image 72
Contents Marine Radar First Edition NOV Do not operate the equipment with wet hands Keep heater away from equipmentDo not open the equipment Do not disassemble or modify the equipmentUse the proper fuse Table of Contents SP-1 Declaration of Conformity FR-1760DSFeatures IntroductionWord to the Owner of This Furuno Radar System Configuration FR-1760DSFR-1710/1725 Antenna Unit Display UnitMenu Tree ViiiPlot Menu Mark Disp OFF Erase VEC REF REL True VEC Time Curs RNG INT REJ OFF Stretch Enhance Contrast Auto Xii Turning on the Power Operational OverviewTransmitter on Control Description Control descriptionTuning the Receiver CRT BrillianceControl Panel Backlighting Degaussing the Screen Initializing the Compass ReadoutOn-screen Legends and Markers On-screen legends and markersSelecting presentation mode Presentation ModesCourse-up Mode Selecting the Range Scale Screen showsEntering Own Ship’s Speed Automatic speed inputManual speed input Pulselength, Echo Stretch 10 Echo stretchS1P Adjusting the Sensitivity Manual adjustment by the A/C SEA controlAutomatic adjustment by the A/C Auto control Suppressing Sea ClutterSuppressing Precipitation Clutter Interference RejectorMeasuring the Range Measuring BearingMeasuring range by the fixed range rings Measuring range by the variable range marker VRMCollision Assessment by the Offset EBL Measuring Range and Bearing Between Two TargetsSetting a Target Alarm Zone 18 Measuring range and bearing Between two targetsAcknowledging alarm Deactivating target alarm zoneInward and outward alarms Off-centering shiftEcho Averaging 23 Echo SIG menuElectronic Plotting Aid EPA Plotting a targetTrue or relative vector, vector time Target dataTerminating target plotting Reading the target dataSetting CPA/TCPA alarm ranges Silencing CPA/TCPA audible alarmLost target alarm CPA/TCPA AlarmTarget Trails Echo Trails Past plot pointsTrue or relative trails Trail gradation Selecting trail timeRestoring trails Displaying, erasing target trailsResetting target trails Trail brillianceThin trails Trail afterglowParallel Index Lines Origin MarkZoom MarkersPresetting the user keys Presetting the function keysUser Keys F1, F2, F3 Function KeysFunc key objectives 42 FUNC1 menuAdjusting Brilliance of Screen Data Suppressing Second-trace EchoesTime Alarm Noise RejectorEnhanced Video Degaussing Interval Navigation DataVideo Contrast Clutter SweepOutputting Target Position Background Color Selecting Range ScalesSelecting Bearing Scale Format Available color combinations46 A/D Converter Curve Setting A/D curve settingsEnlarging Close-in Targets Alarms AlarmsAlarms con’t Peformance MonitorRadar resolution Radar ObservationGeneral Minimum and maximum rangesFalse Echoes Bearing accuracyRange measurement Multiple echoesSart Search and Rescue Transponder Virtual imageShadow sectors Sart range errors Showing Sart marks on the radar displayGeneral remarks on receiving Sart Radar bandwidthRacon Radar Beacon Radar side lobesGain SEA controlMAINTENANCE, Troubleshooting Periodic Maintenance ScheduleMaintenance schedule On nextMaintenance schedule con’t Life Expectancy of Major PartsLife expectancy of major parts Fuse Replacement Simple Troubleshooting Replacement of BatteriesBattery replacement information Easy troubleshootingAdvanced-level Troubleshooting Serviceman qualificationService call Advanced-level troubleshooting Problem Check point Remedy Probable causeAdvanced-level troubleshooting con’t Diagnostic Test Sequence for diagnostic testTest results screen Display circuit test Parts Location Left side viewDisplay unit, top view FR-1760DS Scanner Unit Scanner unit, left side viewFR-1760DS Scanner Unit con’t Scanner unit, right side view, RF section removedFR-1760DS Power Supply Unit FR-1760DS Power supply unitFR-1710/1725 Scanner Unit RF module Upper partModule Lower part Specifications of Marine Radar Radar Display Dimension and Mass Coating Color Index RaconIndex-2