Furuno FR-1710 manual Video Contrast, Clutter Sweep, Outputting Target Position

Page 46

1.40 Video Contrast

The video contrast is adjustable in three lev- els according to the radar video sampling level. Select the level so that the video con- trast feature changes the dynamic range of the video signal to improve picture contrast. Picture shows up most clearly from the back- ground.

1.Press the [MENU] key.

2.Press the [5] key twice to display 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 1-51 ECHO SIG menu

3.Press the [7] key to select desired con- trast level from the CONTRAST field.

4.Press the [ENTER/SELECT] key to reg- ister you selection and the [MENU] key to finish.

1.41 Clutter Sweep

The clutter sweep feature suppresses sea and rain clutters within the trackball-selected area, to discriminate specific targets from noise. The user may select the area to pro- cess and the level of suppression to apply as follows:

1.Press the [MENU] key.

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

3.Press the [8] key to turn on/off the clutter sweep function, and then press the [EN- TER/SELECT] key.

OFF: Turns off clutter sweep feature.

ON(LINK): Sweep area moves with trackball operation. Sweep cursor shown by dashed lines.

ON(FIX): Sweep area is fixed on the screen. Sweep cursor shown by solid lines.

4.Press the [9] key (SWEEP LVL) several times to select level of suppression to use; “3” provides the highest level of noise sup- pression.

5.Press the [ENTER/SELECT] key to reg- ister your selection and the [MENU] key to finish.

6.Operate the trackball to select area to pro- cess.

Select area to process with square cursor.

Figure 1-52 Selection of area to process with clutter sweep

The clutter sweep feature may also be acti- vated by a user key.

1.42 Outputting Target Position

Target position can be output (in IEC 61162- 1 format) to a video plotter and marked on its screen with a symbol. Select target with the trackball and push the A/C RAIN control. (TLL) This function requires position data and compass signal.

1-32

Image 46
Contents Marine Radar First Edition NOV Do not operate the equipment with wet hands Keep heater away from equipmentDo not disassemble or modify the equipment Do not open the equipmentUse the proper fuse Table of Contents SP-1 Declaration of Conformity FR-1760DSIntroduction FeaturesWord 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 Operational Overview Turning on the PowerTransmitter on Control Description Control descriptionCRT Brilliance Tuning the ReceiverControl 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 showsAutomatic speed input Entering Own Ship’s SpeedManual speed input Pulselength, Echo Stretch 10 Echo stretchS1P Automatic adjustment by the A/C Auto control Adjusting the SensitivityManual adjustment by the A/C SEA control Suppressing Sea ClutterSuppressing Precipitation Clutter Interference RejectorMeasuring range by the fixed range rings Measuring the RangeMeasuring Bearing 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 targetsInward and outward alarms Acknowledging alarmDeactivating target alarm zone Off-centering shiftEcho Averaging 23 Echo SIG menuElectronic Plotting Aid EPA Plotting a targetTerminating target plotting True or relative vector, vector timeTarget data Reading the target dataLost target alarm Setting CPA/TCPA alarm rangesSilencing CPA/TCPA audible alarm CPA/TCPA AlarmPast plot points Target Trails Echo TrailsTrue or relative trails Restoring trails Trail gradationSelecting trail time Displaying, erasing target trailsThin trails Resetting target trailsTrail brilliance Trail afterglowParallel Index Lines Origin MarkZoom MarkersUser Keys F1, F2, F3 Presetting the user keysPresetting the function keys Function KeysFunc key objectives 42 FUNC1 menuAdjusting Brilliance of Screen Data Suppressing Second-trace EchoesNoise Rejector Time AlarmEnhanced Video Degaussing Interval Navigation DataClutter Sweep Video ContrastOutputting Target Position Selecting Bearing Scale Format Background ColorSelecting Range Scales Available color combinationsA/D curve settings 46 A/D Converter Curve SettingEnlarging Close-in Targets Alarms AlarmsAlarms con’t Peformance MonitorGeneral Radar resolutionRadar Observation Minimum and maximum rangesRange measurement False EchoesBearing accuracy Multiple echoesVirtual image Sart Search and Rescue TransponderShadow sectors General remarks on receiving Sart Sart range errorsShowing Sart marks on the radar display Radar bandwidthGain Racon Radar BeaconRadar side lobes SEA controlMaintenance schedule MAINTENANCE, TroubleshootingPeriodic Maintenance Schedule On nextLife Expectancy of Major Parts Maintenance schedule con’tLife expectancy of major parts Battery replacement information Fuse Replacement Simple TroubleshootingReplacement of Batteries Easy troubleshootingServiceman qualification Advanced-level TroubleshootingService 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