Furuno FR-1710 manual Radar Display

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(6)Range, Pulselength (PL) & Pulse Repetition Rate (PRR) FR-1710/1725:

						Range (nm)
PL	PRR (Hz)	0.125	0.25	0.5	0.75	1.5	3		6	12	24	48	72	96
S1P	3000			0.07 μs
S2P	3000				0.15 μs
M1P	1500					0.3 μs
M2P	1000								0.5 μs
M3P	1000								0.7 μs
LP	600										1.2 μs

*: Second echo trace mode PRR; 500 Hz

Maximum Range: FR-1710: 72 nm, FR-1725: 96 nm

FR-1760DS:

						Range (nm)
PL	PRR (Hz)	0.125	0.25	0.5	0.75	1.5	3	6	12	24	48	72	96	120
SP	1900			0.08 μs
M1P	1100					0.3 μs
M2P	600							0.6 μs
LP	600*										1.2 μs

	*: 450 Hz on 120 nm range
(7)	Duplexer		Ferrite circulator with diode limiter
(8)	Noise figure		FR-1710/1725: 6 dB, FR-1760DS: 4dB
3. RADAR DISPLAY
(1)	Picture tube		17" color CRT, Effective display diameter: 225 mm
			Yellow or green echoes in 16 levels
(2)	Scanning		Raster scan at scanning frequency 48.3 kHz horizontal, 60 Hz vertical.
			Number of scanning lines 768, non-interlaced.
(3)	Range scales and ring intervals
	Range(nm)	0.125		0.25	0.5	0.75	1.5		3	6	12	24	48	72	96	120
	Ring interval(nm)	0.025		0.05	0.1	0.25	0.25		0.5	1	2	4	8	12	16	20
	No. of Rings	5		5	5	3	6		6	6	6	6	6	6	6	6
	Maximum Range: FR-1710: 72 nm, FR-1725: 96 nm, FR-1760DS: 120 nm
(4)	Range discrimination		34 m on 1.5 nm range
(5)	Bearing discrimination		XN12AF: 2.03°, XN20AF: 1.46°, XN24AF: 1.18°
			SN4A: 2.83°, SN5A: 2.53°
(6)	Minimum range		28 m

SP - 2

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Contents Marine Radar First Edition NOV Keep heater away from equipment Do not operate the equipment with wet handsDo not disassemble or modify the equipment Do not open the equipmentUse the proper fuse Table of Contents Declaration of Conformity FR-1760DS SP-1Introduction FeaturesWord to the Owner of This Furuno Radar FR-1760DS System ConfigurationAntenna Unit Display Unit FR-1710/1725Viii Menu TreePlot Menu Mark Disp OFF Erase VEC REF REL True VEC Time Curs RNG INT REJ OFF Stretch Enhance Contrast Auto Xii Operational Overview Turning on the PowerTransmitter on Control description Control DescriptionCRT Brilliance Tuning the ReceiverControl Panel Backlighting Initializing the Compass Readout Degaussing the ScreenOn-screen legends and markers On-screen Legends and MarkersPresentation Modes Selecting presentation modeCourse-up Mode Screen shows Selecting the Range ScaleAutomatic speed input Entering Own Ship’s SpeedManual speed input 10 Echo stretch Pulselength, Echo StretchS1P Manual adjustment by the A/C SEA control Adjusting the SensitivityAutomatic adjustment by the A/C Auto control Suppressing Sea ClutterInterference Rejector Suppressing Precipitation ClutterMeasuring Bearing Measuring the RangeMeasuring range by the fixed range rings Measuring range by the variable range marker VRMMeasuring Range and Bearing Between Two Targets Collision Assessment by the Offset EBL18 Measuring range and bearing Between two targets Setting a Target Alarm ZoneDeactivating target alarm zone Acknowledging alarmInward and outward alarms Off-centering shift23 Echo SIG menu Echo AveragingPlotting a target Electronic Plotting Aid EPATarget data True or relative vector, vector timeTerminating target plotting Reading the target dataSilencing CPA/TCPA audible alarm Setting CPA/TCPA alarm rangesLost target alarm CPA/TCPA AlarmPast plot points Target Trails Echo TrailsTrue or relative trails Selecting trail time Trail gradationRestoring trails Displaying, erasing target trailsTrail brilliance Resetting target trailsThin trails Trail afterglowOrigin Mark Parallel Index LinesMarkers ZoomPresetting the function keys Presetting the user keysUser Keys F1, F2, F3 Function Keys42 FUNC1 menu Func key objectivesSuppressing Second-trace Echoes Adjusting Brilliance of Screen DataNoise Rejector Time AlarmEnhanced Video Navigation Data Degaussing IntervalClutter Sweep Video ContrastOutputting Target Position Selecting Range Scales Background ColorSelecting Bearing Scale Format Available color combinationsA/D curve settings 46 A/D Converter Curve SettingEnlarging Close-in Targets Alarms AlarmsPeformance Monitor Alarms con’tRadar Observation Radar resolutionGeneral Minimum and maximum rangesBearing accuracy False EchoesRange measurement Multiple echoesVirtual image Sart Search and Rescue TransponderShadow sectors Showing Sart marks on the radar display Sart range errorsGeneral remarks on receiving Sart Radar bandwidthRadar side lobes Racon Radar BeaconGain SEA controlPeriodic Maintenance Schedule MAINTENANCE, TroubleshootingMaintenance schedule On nextLife Expectancy of Major Parts Maintenance schedule con’tLife expectancy of major parts Replacement of Batteries Fuse Replacement Simple TroubleshootingBattery replacement information Easy troubleshootingServiceman qualification Advanced-level TroubleshootingService call Problem Check point Remedy Probable cause Advanced-level troubleshootingAdvanced-level troubleshooting con’t Sequence for diagnostic test Diagnostic TestTest results screen Display circuit test Left side view Parts LocationDisplay unit, top view Scanner unit, left side view FR-1760DS Scanner UnitScanner unit, right side view, RF section removed FR-1760DS Scanner Unit con’tFR-1760DS Power supply unit FR-1760DS Power Supply UnitRF module Upper part FR-1710/1725 Scanner UnitModule Lower part Specifications of Marine Radar Radar Display Dimension and Mass Coating Color Racon IndexIndex-2