Furuno FR-1710 manual Noise Rejector, Time Alarm, Enhanced Video

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1.35 Noise Rejector

The noise rejector suppresses white noise, which appears on the screen as many dots scattered randomly over the display.

To suppress white noise:

1.Press the [MENU] key.

2.Press the [5] key twice to show the ECHO SIG menu.

 

ECHO SIG

 

 

 

 

 

 

 

 

 

 

1.

TGT COLOR

YEL

GRN

COLOR

 

 

 

 

 

 

2.

ECHO AVG

OFF

0.5

1 2 3

 

 

 

 

 

 

 

3.

INT REJ

OFF

1 2

3

 

 

 

 

 

 

4.

N REJ

OFF

ON

 

 

 

 

 

 

 

 

5.

ENHANCE

OFF

ON

 

 

 

 

 

 

 

6.

2ND ECHO

OFF

ON

 

7.

CONTRAST

1

2

3

 

 

 

 

 

 

 

8.

CLTR SWEEP

OFF

 

ON(LINK) ON(FIX)

9.

SWEEP LVL

1

2

3

 

 

 

 

 

0. CNTR ENHANCE

OFF

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1-45 ECHO SIG menu

3.Press the [4] to select OFF or ON from the N REJ field as appropriate.

4.Press the [ENTER/SELECT] key to con- clude your selection followed by the [MENU] key to close the menu.

1.36 Time Alarm

The time alarm gives an aural at a predeter- mined interval.

To silence the alarm, press the [AUDIO OFF] key. The label T-ALM turns to normal color and the timer is reset to initial value and starts the count-down sequence again.

To activate the time alarm:

1.Press [MENU], [0] twice and [4] twice to display the TIME ALARM.

TIME ALARM

1.

2. ALARM INTV

OFF

3M

6M

 

12M 15M

20M

Figure 1-46 TIME ALARM menu

2.Press the [2] key to select desired interval (3, 6, 12, 15, 20 min) from the ALM INTVL field.

3.Press the [ENTER/SELECT] key to con- clude your selection followed by the [MENU] key to close the menu.

1.37 Enhanced Video

On long ranges target echoes tend to shrink in the bearing direction, making them difficult to see. On short and medium ranges such as 1.5, 3 and 6 nm scales, the same size targets get smaller on screen as they approach the own ship. These are due to the inherent prop- erty of the radiation pattern of the antenna. To enhance target video, use the enhanced video function. It enlarges target echoes in bearing and range direction on 1.5-6 nm scales.

1.Press the [MENU] key followed by the [5] key twice to show the ECHO SIG menu.

 

ECHO SIG

 

 

 

 

 

 

 

 

 

 

 

 

1.

TGT COLOR

YEL

GRN

COLOR

 

 

 

 

 

 

 

2.

ECHO AVG

OFF

0.5

1 2 3

 

 

 

 

 

 

 

 

3.

INT REJ

OFF

1 2

3

 

 

 

 

 

 

 

4.

N REJ

OFF

ON

 

 

 

 

 

 

 

 

 

5.

ENHANCE

OFF

ON

 

 

 

 

 

 

 

 

6.

2ND ECHO

OFF

ON

 

7.

CONTRAST

1

2

 

3

 

 

 

 

 

 

 

8.

CLTR SWEEP

OFF

 

ON(LINK) ON(FIX)

9.

SWEEP LVL

1

2

3

 

 

 

 

 

0. CNTR ENHANCE

OFF

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1-47 ECHO SIG menu

2.Press the [5] key to select OFF or ON from the ENHANCE field.

3.Press the [ENTER/SELECT] key, and then press the [MENU] key.

1-30

Image 44
Contents Marine Radar First Edition NOV Do not operate the equipment with wet hands Keep heater away from equipmentUse the proper fuse Do not open the equipmentDo not disassemble or modify the equipment Table of Contents SP-1 Declaration of Conformity FR-1760DSWord to the Owner of This Furuno Radar FeaturesIntroduction 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 Transmitter on Turning on the PowerOperational Overview Control Description Control descriptionControl Panel Backlighting Tuning the ReceiverCRT Brilliance 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 showsManual speed input Entering Own Ship’s SpeedAutomatic 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 AlarmTrue or relative trails Target Trails Echo TrailsPast plot points 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 EchoesEnhanced Video Time AlarmNoise Rejector Degaussing Interval Navigation DataOutputting Target Position Video ContrastClutter Sweep Background Color Selecting Range ScalesSelecting Bearing Scale Format Available color combinationsEnlarging Close-in Targets 46 A/D Converter Curve SettingA/D curve settings Alarms AlarmsAlarms con’t Peformance MonitorRadar resolution Radar ObservationGeneral Minimum and maximum rangesFalse Echoes Bearing accuracyRange measurement Multiple echoesShadow sectors Sart Search and Rescue TransponderVirtual image 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 nextLife expectancy of major parts Maintenance schedule con’tLife Expectancy of Major Parts Fuse Replacement Simple Troubleshooting Replacement of BatteriesBattery replacement information Easy troubleshootingService call Advanced-level TroubleshootingServiceman qualification 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