Reducing Noise Interference | Furuno 1943, 1933, 1833 instruction

2. RADAR OPERATION

2.13Reducing Noise Interference

Noise, appearing on the displays as random “speckles,” can be reduced as follows:

1.Press the [MENU] key to open the menu.

2.Press the RADAR DISPLAY SETUP soft key.

3.Select NOISE REJECTION, then press the EDIT soft key.

4.Select OFF, LOW or HIGH as appropriate.

5.Press the ENTER soft key.

6.Press the [MENU] key to close the menu.

2-17

Image 51

Furuno 1943, 1933, 1833 manual Reducing Noise Interference

Contents

Marine Radar 00080918601 Keep heater away from equipment Furuno agent or dealer about replacementDo not open the equipment Do not disassemble or modify the equipment Table of Contents 11.6 Iii Plotter Operation Video Sounder Operation Customizing Your Unit Vii MAINTENANCE, Troubleshooting Viii Word to the Owner of the Model 1833/1933/1943 Marine Radar Features NavNet system NavNet system Two-unit NavNet system Two-unit NavNet systemThree-or-more-unit NavNet system Xii What is WAAS? Operational Overview Control panel Operating ControlsDisplay unit controls Overview of display unit controls Soft keys Display unitRadar display Trackball Enter knob Alphabet, symbol, numericEnter knob Numerics Remote controller Remote controller Inserting a Chart Card Chart card and card removerDisplay unit Startup sequence Turning the Unit On/Off Brilliance adjustment soft keys Display brilliance, panel brillianceDisplay brilliance and panel brilliance windows Brilliance boost Economy mode Screen type and available display screen Selecting a DisplayDisplay modes Display screens Selecting a display Display screen selection windowRadar combination screen selection window Switching control in combination screens Selecting image source Select source menuRadar source and sounder source windows Cursor, cursor data Trackball, Cursor Entering the MOB Mark, Setting MOB as Destination MOB conceptMOB mark messages Temporarily erasing a data box Data BoxesShowing, hiding data boxes with soft key Rearranging data boxes Function Keys Executing a functionFunction keys NavNet display unit-generated echoes Simulation setup menuSimulation Display Radar Plotter NavNet radar antenna-generated echoes Sounder Radar Display Radar Operation Transmitting, Stand-by TuningAdjusting the Gain Tuning window Gain sensitivity window Gain adjustment soft keys How the A/C SEA works Adjusting the A/C SEASEA setting window Reducing Sea Clutter Adjusting the A/C Rain Rain setting windowReducing Precipitation Clutter Range Scale Range scales nm, smRange scales km Pulselength Signal process soft keys Presentation Mode Selecting a presentation modeRadar display soft keys Head-up H-UP Head-up presentation modeCourse-up presentation mode Description of presentation modes True motion TR-M North-up presentation modeTrue motion presentation mode North-up N-UP Measuring range by range rings Measuring the Range Measuring range by cursor How to measure range to a target with the cursor How to measure range with the VRM Measuring range by VRMEBL/VRM soft keys Moving EBL/VRM data boxes Erasing a VRM, VRM indicationErasing EBL/VRM data boxes Hiding EBL/VRM data boxes Measuring bearing by EBL How to measure bearing with the EBLMeasuring the Bearing Measuring bearing by cursor Erasing an EBL, EBL indication Erasing the Heading Line, North Marker Reducing Noise Interference Radar interference Rejecting Radar Interference Zoom ZoomZooming in on radar targets Zooming in on ARP, TTM targets Shifting the picture manually Shifting the PictureManual shift Target no. selection window Automatic shift Setting automatic shift maximum speedAuto ship speed setting window Automatic shift Using the Offset EBL Predicting collision coursePredicting collision course with the offset EBL Measuring range and bearing between two targets Measuring range & bearing between two targets Trail soft keys Echo TrailsTrail time Sample echo trails Starting echo trails Trail gradationMultitone and monotone trails Trail mode window Echo trail mode Types of echo stretch Echo Stretch Effect of echo averaging Echo Averaging Target soft keys Outputting TLL Data Guard Alarm Setting a guard alarm zoneHow to set a guard alarm zone Cancelling the guard alarm When the alarm is violated… Turning on/off watchman Setting watchman stand-by intervalWatchman How watchman works Second-trace echoes Suppressing Second-trace Echoes Waypoint marker Waypoint Marker Display accuracy is affected by the following 26 ARP, TTM Operation ARP setup menu Activating/deactivating ARP, TTMARP target info window Automatic acquisition ARP plot symbolsAcquiring and tracking targets ARP Manual acquisition Displaying target number ARP, TTM Automatic acquisition areaARP target number Terminating tracking of all targets Cancel all targets windowTerminating tracking of ARP targets Terminating tracking of selected targets Setting vector attributes ARP What is a vector?Vector reference, vector time Displaying past position ARP Past position displaysPlot interval window ARP target data 26.7 ARP, TTM target data CPA window 26.8 CPA/TCPA alarm ARP Lost target mark Lost target alarm ARPCanceling a lost target Tcpa window Interpreting the Radar Display GeneralMinimum and maximum ranges Bearing accuracy Radar resolutionBearing resolution Range resolution Sidelobe echoes False echoesMultiple echoes Multiple echoes Shadow sectors Virtual imageVirtual image Shadow sectors Sart Search and Rescue Transponder Appearance of Sart signal on the radar display General remarks on receiving Sart General procedure for detecting Sart response Rain control Appearance of racon signal on the radar displayRacon Radar Beacon SEA control This page is intentionally left blank Plotter Displays Full-screen plotter displayFull-screen plotter display Contents of nav data window Nav data window001WPT Compass display Compass display Soft keys Reading the XTE cross-track error monitorSetting the range for the XTE monitor XTE range setting window Highway display Highway display Nav data displays Nav data display North-up Plotter display, north-up mode Auto course-up display Course-upAuto course-up Plotter display, course-up mode, destination set Chart Scale Charts scalesShifting the Display Chart icons and their meanings Chart CardsChart card overview Indices and chart enlargement Chart symbols Furuno and NavCharts chartsWhen a chart cannot be displayed Chart symbols Data for aids to navigation Lighthouse markExample of buoy, lighthouse data Plotter display, showing port service display Port service icons NavCharts only Example of caution area window MAP chartsCursor and data display Objects window Icon data Lighthouse iconObject windows Sample lighthouse data Tide informationObjects window Date window Tide window Track control menu Working with TrackDisplaying track Own ship track Target track Stopping, restarting plotting of own ship track Track plotting interval Track plotting method and interval for own ship trackTrack plotting method Interval window Track memory window Changing own ship track/mark distribution setting Erasing track Erasing own ship track by areaErase menu Erasing all target tracks Erasing all own ship track Mark shapes Marks, LinesEntering a mark, line Changing mark attributes Marks shape window Selecting line type Erasing an individual line Erasing marks, linesLines style window Erasing an individual mark Erasing all marks, lines Entering a waypoint with the cursor WaypointsEntering waypoints Entering a waypoint at own ship position Waypoint ark shape selection window Select Mark Entering a waypoint by range and bearing Editing waypoint data from the waypoint list Editing waypoint dataEntering a waypoint from the waypoint list Alphanumeric and local waypoint lists Plotter display Editing a waypoint from the plotter display Erasing a waypoint from the waypoint list Erasing waypointsErasing a waypoint directly from the plotter display Erasing a waypoint from the menu Chart details menu Changing waypoint mark size FURUNO, NavCharts Alphanumeric list Searching waypoints Route menu RoutesCreating routes Entering a route with existing waypoints Entering a route with the cursor Creating voyage-based routes Save route menuSave route window Displays for entry of time, distance interval For manual entry of waypoints, do the followingTo stop recording waypoints and save the route Connect route window Connecting routes Waypoint list for editing a route local list Inserting a waypoint in a routeInserting a waypoint from the route list Edit route menu Inserting a waypoint in an intermediate location on a route Inserting a waypoint from the plotter display Removing a waypoint from the plotter display Removing waypoints from a routeErasing routes Removing a waypoint from the route list Go to method window NavigationNavigating to a quick point Selecting quick point entry method Selecting a waypoint from the waypoint list Navigating to waypointsNavigating to multiple quick points Selecting a waypoint from the plotter display Port services and sample port list Navigating to ports, port services NavCharts only Sample filling station locations southern Italy Navigating waypoints in reverse order Following a routeSelecting the route to follow Plotter display, route selected as destination Example of when to restart navigation Restarting navigationLog display Select speed for ETA window Setting speed for ETA calculationSwitching waypoints Automatic waypoint switching methods Cancelling route navigation Audio alarm window AlarmsAudio alarm on/off Plotter alarm menu Arrival alarm How the arrival alarm worksArrival alarm window Anchor watch alarm How the anchor watch alarm worksAnchor watch alarm window XTE alarm window XTE Cross-Track Error alarmSpeed alarm How the XTE alarm works Proximity alarm Proximity alarm windowProximity mark Trip alarm window Trip alarm Plotter alarm menu, Alarm information Plotter alarm messages and their meanings Alarm messages General setup menu, Resetting Trip Distance Underwater conditions and video sounder display Principle of Operation Display mode window Sounder DisplaysSelecting a sounder display 114 Description of sounder displaysSingle-frequency display Marker-zoom display Dual-frequency displayDual-frequency display KHz picture Sounding area and transmission frequency Marker-zoom display plus normal sounder display Bottom-zoom displayBottom-zoom display plus normal sounder display Bottom discrimination display Bottom-lock displayBottom-lock display plus normal sounder display Bottom discrimination display Selecting screen split method in combination displays Scope display display onlyScope display Types of automatic sounder modes How to enable automatic sounder operationAutomatic Sounder Operation How the automatic sounder works Selecting display range Selecting the manual modeAdjusting the gain Manual Sounder Operation Shifting the range Gain windowShift concept Measuring Depth, Time How to measure depth and time Reducing Interference Types of interferenceNoise limiter window Reducing Low Level Noise Appearance of clutterClutter window Signal level window Erasing Weak EchoesAppearance of weak echoes Picture Advance Speed Advancement independent of ship’s speedPicture advance window Advancement synchronized with ship’s speed How the speed-dependent picture advance mode works Sounder alarm menu Fish alarm window Bottom alarmFish alarm Bottom alarm window Fish alarm B/L window Fish alarm B/L Water temperature alarm window Water temperature alarm Depth Alarm When an alarm setting is violated Sounder alarm messages and their meanings Water Temperature Graph Zero line Interpreting the Sounder DisplayZero line Bottom echo Surface noise/aeration Fish school echoesSurface noise/Aeration Fish school echoes General setup menu General Setup Con’t on next Contents of general setup menu Radar display setup menu Radar SetupRadar display setup Contents of general setup menu con’t from previous Contents of radar display setup menu Radar range setup menu Radar range setup Function key setup Radar function keyRadar function key options Menu Item Function Function Key Radar function keys Plotter Setup Plotter setup menu Contents of plotter setup menuNavigation options Plotter function key options Function key setupFunction Default Function Key Key Label Plotter function key menu RUL Plotter function keys Chart Setup Chart offsetPlotter display, chart offset selected FURUNO, NavCharts chart attributes Cntour Line soft key MAP chart attributesContour line menu FURUNO, NavCharts Chart details menu C-MAP Contents of chart details menu C-MAP Depth info menu C-MAP Depth Info soft key Data box menu Data Boxes Setup Hot page setup screen, Hot Page Setup HOT Navigator Setup Contents of nav setup menuNavigation data source GPS setup menu Contents of GPS setup menu GPS receiver setup Contents of GPS setup menu con’t from previous Contents of GPS sensor settings menu con’t from previous Contents of Waas Setup menu Waas Setup Loran GRI & station pair window TD display setupTD setup menu Displaying Loran C TDs Decca chain and station pair window Displaying Decca TDs Nav Data Display Setup Nav data setup screenNav data setup window Sounder Setup System setupOn next TVG Sounder system setup menu description con’t from previous Sensor setup Sensor setup menuSensor setup menu settings Zoom range and bottom-lock ranges Sounder range setup menuDefault basic ranges Sounding range, zoom range, bottom lock range Sounder function key options Sounder function key menu Sounder function keys Memory Card Operations Formatting memory cardsSave data menu Saving data to a memory card Memory card messages Memory card messages Load data menu Playing back data from a memory card Upload and download menus Setting communication software on the PCUploading, Downloading Data Uploading or downloading data Characters available for comment Baud rate windowWaypoint data format Waypoint data format Route data menu Route comment data formatEnd of sentence Loading Waypoint Data from Yeoman Marks & lines window Receiving Data Via Network EquipmentReceive data menu Host name window Select sentence menu Outputting Data Through the Network Preventive Maintenance Replacement of BatteryMaintenance program Trackball Maintenance Replacement of Fuse Radar Simple TroubleshootingGeneral troubleshooting Radar troubleshooting Plotter Plotter troubleshooting Sounder Sounder troubleshooting Memory I/O test Diagnostics GPS receiver test results Display unit testDisplay unit test results GPS sensor test Requires GPS Receiver GP-310B/320B Network sounder test Requires Network Sounder ETR-6/10N Network sounder test resultsARP test results Test patterns Test pattern Screen for testing keyboard, remote controller Keyboard, remote controller test GPS status display GPS Status Display Clearing Memories Memory clear menuWindows for clearing memory Error messages Error Messages This page is intentionally left blank Menu key Menu Overview Appendix LAT/LON Format DD MM. MM’ DD MM. MMM’ DD MM. MMMM’ 4800 Plotter Chart Border Line ON, OFF Speed 010.0 kt 0-999.9 kt Temperature Graph ON, OFF Sounder Alarms Alarm keyRadar Alarms Plotter Alarms Geodetic Chart List World Time Chart V E Icons Model 1833/1933/1943 Specifications of Marine Radar E3502S01D Plotter Function Coating Color Index-1 Index Index Index-2 Messages Index-3 Index-4 Presentation mode Waypoints Index-5