Manuals / Furuno / Marine Equipment / Marine RADAR

Furuno 1732C, 1753C, 1742, 1733C, 1752, 1723C, 1762C, 1722C, 1763C manual Virtual image, Shadow sectors

Models: 1752C 1732 1763C 1723C 1732C 1733C 1742 1722 1762C 1752 1753C 1762 1722C 1742C

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2. RADAR OPERATION

Virtual image

A relatively large target close to your ship may be shown at two positions on the screen. One of them is the true echo directly reflected by the target and the other is a false echo which is caused by the mirror effect of a large object on or close to your ship as shown in the figure below. If your ship comes close to a large metal bridge, for example, such a false echo may temporarily be seen on the screen.

Target ship

Own ship

True echo

Mirror image of target ship

False echo

Virtual image

Shadow sectors

Funnels, stacks, masts, or derricks in the path of the antenna block the radar beam. If the angle subtended at the antenna is more than a few degrees, a non-detecting sector or blind spot may be produced. Within this sector, targets can not be detected.

Radar antenna

Radar mast

Shadow sector

Shadow sectors

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Furuno 1732C, 1753C, 1733C, 1723C, 1762C, 1722C, 1763C, 1752C, 1742C manual Virtual image, Shadow sectors

Contents

Marine Radar 00080918202 Safety Instructions Table of Contents Iii Plotter Operation Video Sounder Operation Customizing Your Unit Data Transfer Vii Viii Foreword Features NavNet system NavNet system Two-unit NavNet system Two-unit NavNet systemThree-or more unit NavNet system Xii What is WAAS? Operational Overview Display unit controls Operating ControlsOverview of display unit controls Control panel Soft keys Display unitPlotter display Enter knob Enter knob Alphabet, symbol, numeric Center Remote controller Chart card and card remover Inserting a Chart Card Startup test Turning the Unit On/Off Cursor, cursor data Cursor Pad, Cursor Display Brilliance, Panel Brilliance, Contrast, Hue Brilliance adjustment soft keysDisplay brilliance, panel brilliance Display brilliance and panel brilliance windows Contrast Day Night Twilight Applicable modeHue MODEL1722C/1723C series Contrast window Display modes Selecting a DisplayDisplay screens Screen type and available display screen Selecting a display Full-screen selection window overlay for color modelRadar combination screen selection window 12 3nm Switching control in combination and overlay screens Selecting radar source Select source menuRadar source and sounder source windows Showing, hiding data boxes with soft key Data BoxesRearranging data boxes Temporarily erasing a data box Executing a function Function Keys Simulation Display Simulation setup menuRadar Internally generated echoes Plotter Antenna unit-generated echoes Sounder This page is intentionally left blank Radar display Radar Display Adjusting the Gain TuningTuning window Transmitting, Stand-by Gain sensitivity window Gain adjustment soft keys SEA setting window Adjusting A/C SEAReducing Sea Clutter How the A/C SEA works Adjusting the A/C Rain Rain setting windowReducing Precipitation Clutter FTC setting window Adjusting the FTC Range Scale Range scales nm, smRange scales km Pulselength Signal process soft keys Presentation Mode Selecting a presentation modeRadar display soft keys Course-up presentation mode Head-up presentation modeDescription of presentation modes Head-up True motion presentation mode North-up presentation modeNorth-up True motion Measuring range by range rings Measuring the Range Measuring range by cursor How to measure range and bearing to a target with the cursor How to measure range with the VRM Measuring range by VRMEBL/VRM soft keys Measuring the Bearing Erasing an EBL, EBL indication How to measure bearing with the EBL Reducing Noise Erasing the Heading Line, North Marker Radar interference Reducing Radar Interference Zooming in on radar targets ZoomZooming ARP, TTM targets Zoom Shifting the Picture Manual shiftTarget no. selection window Auto ship speed setting window Setting automatic shift maximum speedAutomatic shift Shifting the picture manually Using the Offset EBL Predicting a collision coursePredicting collision course with the offset EBL Measuring range and bearing between two targets Measuring range & bearing between two targets Trail time Echo TrailsSample echo trails Trail soft keys Trail brilliance MODEL1722 series Starting echo trailsTrail gradation MODEL1722C/1723C series Multitone and monotone trails Trail color window Trail color MODEL1722C/1723C series Types of echo stretch Echo Stretch Effect of echo averaging Echo Averaging Target soft keys Outputting TLL Data Setting a guard alarm zone Guard Alarm Canceling the guard alarm When the alarm is violated… Watchman Setting watchman stand-by intervalHow watchman works Turning on/off watchman Waypoint marker Waypoint Marker ARP option, TTM operation Usage precautions for ARP ARP setup menu Activating/deactivating ARP, TTMARP target info window Acquiring and tracking targets ARP only ARP plot symbolsManual acquisition Automatic acquisition Displaying target number internal, external ARP Automatic acquisition areaARP target number Terminating tracking of ARP targets Cancel all targets windowTerminating tracking of selected targets Terminating tracking of all targets Setting vector attributes ARP What is a vector?Vector reference, vector time Displaying past position display ARP Past position displaysHistory interval window ARP target data 25.7 ARP, TTM target data CPA window 25.8 CPA/TCPA alarm ARP Canceling a lost target Lost target alarm ARPTcpa window Lost target mark Interpreting the Radar Display GeneralMinimum and maximum ranges Bearing resolution Radar resolutionRange resolution Bearing accuracy Multiple echoes False echoesMultiple echoes Sidelobe echoes Virtual image Virtual imageShadow sectors 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 Racon Radar Beacon Appearance of racon signal on the radar displaySEA control Rain control Plotter Displays Full-screen plotter displayFull-screen plotter display Nav data window Contents of nav data window Compass display Compass display XTE range setting window Reading the XTE cross-track error monitor Highway display Highway display Nav data displays Nav data display North-up Plotter display, north-up mode Course-up Plotter display, auto course-up modeAuto course-up Plotter display, course-up mode, destination set Chart Scale Charts scalesShifting the Display Chart Cards Chart card overviewChart icons and their meanings Indices and chart enlargement Sample chart Japan showing indicesWhen a chart cannot be displayed Furuno and NavCharts Chart symbolsData for aids to navigation Port service icons NavCharts only Plotter display, showing port service displayCurrent or tide data Cursor and data display MAP cardsObjects window Example of caution area window Icon data Lighthouse iconObject windows Tide information Sample lighthouse data Port service icons Tide windowDate window Displaying track Working with TrackOwn ship track Track control menu Stopping, restarting plotting of own ship track Target trackTrack control menu MODEL1722C/1723C series Changing track color MODEL1722C/1723C series Own ship’s trackOwn ship track color window Track plotting method Track plotting method and interval for own ship trackPlot window Track plotting interval Memory track & mark window Changing own ship track/mark distribution setting Erasing track Erasing own ship track by areaErase menu Erase track by color window Erasing own ship track by color color modelErasing all own ship track Erasing all target tracks Entering a mark Marks, LinesChanging mark attributes Mark shapes Mark shape window Selecting line type Line style window Erasing marks, linesErasing an individual mark Erasing an individual line Erasing all marks, lines Entering waypoints WaypointsEntering a waypoint at own ship position Entering a waypoint with the cursor Waypoint mark color selection window Waypoint mark shape selection window Entering a waypoint by range and bearing Entering a waypoint from the waypoint list Editing waypoint dataAlphanumeric and local waypoint lists Editing waypoint data from the waypoint list Editing a waypoint from the plotter display Erasing waypoints Erasing a waypoint with the cursorErasing a waypoint from the waypoint list Chart details menu Changing waypoint mark size FURUNO, NavCharts Alphanumeric list Searching waypoints Creating routes RoutesEntering a route with existing waypoints Route menu 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 Inserting waypoint from the route list Inserting waypointsEdit route menu Waypoint list for editing a route local list Inserting a waypoint in an intermediate location on a route Inserting a waypoint from the plotter display Erasing routes Removing waypoints from a routeRemoving a waypoint from the route list Removing a waypoint from the plotter display Navigating to a quick point NavigationSelecting quick point entry method Goto method window Navigating to multiple quick points Navigating to waypointsSelecting waypoint from the plotter display Selecting waypoint from the waypoint list Navigating to ports, port services NavCharts/C-MAP Selecting an external waypointQP window Sample filling station locations southern Italy Port services and sample port list Selecting the route to follow Following a routePlotter display, route selected as destination Navigating route waypoints in reverse order Example of when to restart navigation Restarting navigationLog display Setting speed for ETA calculation Switching waypointsSelect speed for ETA window Canceling route navigation Audio alarm on/off AlarmsPlotter alarm menu Audio alarm window Arrival alarm How the arrival alarm worksArrival alarm window Anchor watch alarm How the anchor watch alarm worksAnchor watch alarm window Speed alarm XTE Cross Track Error alarmHow the XTE alarm works XTE alarm window Proximity alarm Proximity alarm windowProximity mark Trip alarm window Trip alarm Alarm menu Alarm information Alarm messages Resetting Trip DistancePlotter alarm messages and their meanings General setup menu, Entering the MOB Mark, Setting MOB as Destination MOB conceptMOB mark messages This page is intentionally left blank Underwater conditions and video sounder display Principle of Operation Display mode window Sounder DisplaysSelecting a sounder display Single frequency display Description of sounder displays Dual-frequency display LF picture Dual-frequency displayHF picture Sounding area and transmission frequency Marker-zoom display plus normal sounder display Marker-zoom displayBottom-zoom display Bottom-zoom display plus normal sounder display Bottom-lock display plus normal sounder display Bottom-lock displayBottom discrimination display Bottom discrimination display Selecting screen split method in combination displays Scope display display onlyScope display Auto mode window How to enable automatic sounder operationAutomatic Sounder Operation How the automatic sounder works Adjusting the gain Selecting the manual modeManual Sounder Operation Selecting display range Range shifting Gain windowShift concept Measuring Depth, Time How to use the VRM, time cursor Reducing Interference Types of interferenceNoise limiter window Reducing Low Level Noise Appearance of clutterClutter window Signal level window Erasing Weak EchoesAppearance of weak echoes White marker window White Marker MODEL1722C/1723C series 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 Hue no. and background and echo colors Display Colors MODEL1722C/1723C series Sounder alarm menu Fish alarm Bottom alarmBottom alarm window Fish alarm window Fish alarm B/L window Fish alarm B/L Water temperature alarm window Water temperature alarm Fish Alarm When an alarm setting is violated Water Temperature Graph Sounder alarm messages and their meaningsChanging Pulse Repetition Rate Zero line Interpreting the Sounder DisplayBottom echo Zero line Surface noise/Aeration Fish school echoesFish school echoes Surface noise/aeration General setup menu General Setup Description Settings Default Setting Contents of general menu Radar Setup Radar display setupRadar display setup menu On next Contents of radar setting menu Contents of radar setting menu con’t from previous Radar range setup menu Radar range setup Default Function Function Key Label Function key setupRadar function key menu Radar function key options Menu Item Function Radar function keys Plotter Setup Display option menu Contents of display option menuNavigation options Default Function Plotter function key menuPlotter function key options RUL Ruler Plotter function keys Chart Setup Chart offsetPlotter display, chart offset selected Chart details menu FURUNO, Nav-Charts FURUNO, Nav-Chartschart attributes Description Settings Contents of chart details menu FURUNO, NavCharts Cntour Line soft key Contour line menu FURUNO, Nav-Charts Chart details menu C-map MAP chart attributes Contents of chart details menu C-map Settings description Contents of C-MAP chart details menu from previous Depth info menu C-map Depth Info soft key Data box menu Data Boxes Setup Hot Page Setup Hot page setup menuFull-screen selection window Ovrly for color model only Combination screen selection window Contents of nav setup menu Navigator SetupDescription Settings Default Navigation data source GPS sensor setup menu Contents of GPS setup menu GPS receiver setup Set equipped with GP-310B/320B GPS Status Contents of GPS sensor setup menu con’t from previous Contents of Waas Setup menu Waas Setup TD setup menu TD display setupDisplaying Loran C TDs Loran GRI & station pair window Decca chain and station pair window Displaying Decca TDs Nav Data Display Setup Nav data setup screenNav data setup window System setup Sounder SetupSounder system setup menu Sounder system setup menu description TVG Sounder system setup menu description con’t Sensor setup menu Sensor setupSensor setup menu settings Settings Default Setting Default ranges Sounder range setup menuSounding range, zoom range, bottom lock range Range Sounder function key options Sounder function key menu Sounder function keys Change this setting This page is intentionally left blank Memory Card Operations Formatting memory cardsSave data menu Saving data to a memory card Memory card messages Memory card messagesMessage Reason Remedy Load data menu Playing back data from a memory card Uploading, Downloading Data Setting communication software on the PCUploading or downloading data Upload and download menus Waypoint data format Baud rate windowWaypoint data format Characters available for comment Route data menu Route comment data formatEnd of sentence Loading Waypoint Data from Yeoman Receive data menu Receiving Data Via Network EquipmentHost name window Marks & lines window Select sentence menu Outputting Data Through the Network Preventive Maintenance Maintenance programCheck point Remedy Replacement of Fuse Replacement of BatteryParts Name Type Code No Simple Troubleshooting General troubleshootingIf… Then… Radar troubleshooting RadarIf… But… Then… Plotter Plotter troubleshooting Sounder Sounder troubleshooting Diagnostics Memory I/O testTest & memory clear menu Display unit test results ex. MODEL1722C series Display unit testGPS sensor test GPS receiver test results Network sounder ETR-6/10N, ETR-30N test Network sounder test resultsARP test 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 Equipment status error messages Error Messages Menu Overview Menu keyAP-1 Interval TIME, Distance AP-2 AP-3 AP-4 Zoom Marker ON, OFF AP-5 AP-6 System configuration AP-7 GPS Sensor Settings DD MM. MMM AP-8 Radar Simulation Data YES, no AP-9 AP-10 AP-11 Alarm key AP-12 Geodetic Chart List AP-13 World Time Chart AP-14 Icons Specifications of Marine Radar Transceiver Module Display Unit Plotter Function Environmental Condition This page is intentionally left blank Index-1 Index Index Index-2 Interference rejection Index-3 Index-4 Satellite disable GPS Receiver GP-310B Index-5 Switching in route navigationPage