Furuno GP-1850WF, GP-1850WDF manual Automatic Sounder Operation, Manual Sounder Operation

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2.5Automatic Sounder Operation

Automatic sounder operation is useful when you are preoccupied with other tasks and do not have time to adjust the display.

How the automatic sounder works

The automatic sounder function automatically selects the proper gain, range scale and clutter suppression level according to depth. It works as follows:

Range changes automatically to display the bottom echo on the screen.

The gain is automatically adjusted to display the bottom echo in reddish brown (default color arrangement).

Clutter, which suppresses low level noise, is automatically adjusted.

Two types of automatic sounder modes

Two types of automatic sounder modes are available: CRUISING and FISHING. CRUISING is for tracking the bottom, and FISHING is for searching fish schools. CRUISING uses a higher clutter rejection setting than FISHING therefore it is not recommended for fish detection - weak fish echoes may be erased by the clutter suppression circuit.

How to enable automatic sounder operation

1.To show the mode/freq window: Normal sounder display: Press the MODE/FREQ soft key. Plotter/sounder display: Press the SNDR, MODE/FREQ soft keys in order.

2. VIDEO SOUNDER OPERATION

Dual-frequency display: Press the

MODE soft key.

MODE/FREQ

AUTO CRUISING

AUTO FISHING

MANUAL

Mode/frequency window

2.Press ▲ or ▼ to select AUTO CRUISING or AUTO FISHING.

3.Press the RETURN soft key to close the window, or wait 10 seconds and the window closes automatically.

2.6Manual Sounder Operation

Manual operation is useful for observing fish schools and bottom using a fixed gain setting.

The gain, clutter, range and range shifting functions used together give you the means to select the depth you can see on screen. The basic range can be thought of as providing a “window” into the water column and range shifting as moving the “window” to the desired depth.

Selecting the manual mode

1.Press the appropriate soft keys to show the MODE/FREQ window.

2.Select MANUAL.

3.Press the RETURN soft key.

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Contents Color DGPS/PLOTTER/SOUNDER Color GPS/PLOTTER/SOUNDER 00080937000 Safety Instructions Table of Contents Routes IiiFeatures ForewordWord to GP-1850WDF/1850WF Owners Antenna Unit System ConfigurationWaas What is WAAS?Operational Overview Display Unit ControlsDisplay unit Remote Controller Turning the Power On/Off Inserting Mini Chart CardLocation of mini chart Card slot cover Direction of mini chart cardTurning the power off Adjusting Tone and BrillianceTone and brilliance adjustment window Display abbreviationsDisplay modes plotter Plotter DisplaysDisplay modes Sounder display Sounder DisplaysMenu Operation, Soft Keys Display setup 1 menuMain menu Time display windowDemo setting screen Demo mode windowDemonstration Display Video Sounder Operation Principle of OperationUnderwater conditions and video sounder display Sounder Display Description Normal sounder display indications, markersKHz picture Sounder function window Selecting sounder display modeMarker-zoom display plus normal sounder display Bottom-zoom display plus normal sounder displayPlotter/Sounder Display Dual-frequency DisplayManual Sounder Operation Automatic Sounder OperationAdjusting the gain Selecting display rangeRange shifting Measuring Depth Suppressing InterferenceSuppressing Low Level Noise White Marker Erasing Weak EchoesSelecting Background and Echo Colors Selecting Picture Advance SpeedAlarms Zero line Interpreting the DisplayMinute mark Fish school echoesSurface noise/aeration Surface noise/AerationPresentation Modes Plotter DisplaysNorth-up Course-upShifting the Display CursorDisplaying Nav Information Window Turning on the cursor, shifting the cursorMini Chart Cards Selecting Chart Scale/RangeIndices and chart enlargement Chart icons and their meaningsChart symbols Remarks on chart displaySample chart Japan and South Korea Showing indices Furuno chart symbolsAid to navigation data Port service icons Nav-ChartsTMcardsEnlarging an indication Navigation Data DisplayGPS satellite monitor display Navigation data displaySteering Display How to read the compass displayBeacon information display Beacon information displaySetting the range of the XTE scale How to read the XTE indicationXTE range setting window Highway DisplayPress the HIDE/SHOW key Changing Operation ModeSelecting fishing 1, fishing 2 mode Resetting trip distanceNavigation Trip Distance Track Chart setup menuDisplaying Track Stopping/Restarting Plotting of TrackTrack Plotting Method, Interval Changing Track ColorTrack plotting method Track color windowTrack plotting interval Changing Track Memory CapacityInterval window Track memory windowErasing tracks by area Erasing TracksErasing tracks by color Erasing all trackEntering Marks MarkPlotter display Changing displays Plotter displayVideo sounder display Changing Mark AttributesChanging displays Video sounder display Mark/line windowChanging Mark Size Chart details menuMark line window Mark color windowErasing Marks Displaying Track and Mark PointsTarget Mark Entering Waypoints WaypointsEntering waypoints at own ship’s position Entering waypoints at MOB positionWaypoint window Waypoints menuMark shape selection window Mark color selection windowEntering waypoints by range and bearing Entering waypoints by latitude and longitude position Erasing Individual WaypointsErasing waypoints by the cursor Erasing waypoints through the waypoint listChanging Waypoint Position on the Plotter Display Changing Waypoint DataWaypoint Mark Size Searching WaypointsSearch window Entering Routes RoutesEntering routes through the route list Route menuConnecting Routes Entering routes by the cursorConnect route window Inserting waypoints through the route list Inserting, Removing WaypointsChanging waypoints through the list Edit route menuRemoving waypoints from routes Inserting waypoints on the plotter displayCreating Track-based Routes Route contents displaySave route menu New route windowErasing Routes Navigating to Quick Points NavigationSelecting quick point entry method Navigating to a single quick pointNavigating to Waypoints waypoint list Navigating to Ports, Port ServicesPlotter display Sample port list southern ItalySample filling station locations southern Italy Sample port service listNavigate along specific leg of route Following a RouteRestarting navigation Navigate route waypoints in reverse orderSetting speed for ETA calculation Switching waypointsSelect speed for ETA window Canceling Navigation Audio Alarm On/Off Plotter AlarmsAlarm menu Audio alarm windowAnchor Watch Alarm Arrival AlarmXTE Cross Track Error Alarm Speed AlarmProximity Alarm Alarm Information Alarm messagesAlarm messages and their meanings Formatting Memory Cards Memory Card Operations10-1 Download/upload menu10-2 Saving Data to Memory CardSaving data Save Data messageLoading Data from Memory Card Error messages10-3 Data overwrite10-4 ConfigurationWaypoint/route Mark/lineChart Offset menu Chart Setup Options menuCustomizing Your Unit 11-1Chart Details menu Chart details menu description11-2 Display Setup 1 menu description Display Options menu11-3 Display setup 2 menu Display Setup 2 menu description11-4 Mag variation windowGPS Setup options menu GPS Setup Options menu description11.3 GPS/DGPS/TD Options menu 11-5Geodetic datum window 11-6DGPS/WAAS Setup Options menu 11-7DGPS/WAAS menu 11-8 TD Setup menuDisplaying Loran C TDs Displaying Decca TDsSystem Setup soft key Sounder Setup Options menuRange Setup soft key 11-9Echo Offset 200kHz, Echo Offset 50kHz 11-10Seabed LVL 200kHz, Seabed LVL 50kHz TVG conceptSetup Nmea Port 1 menu description Configuration menuSetup NMEA/DGPS Port 2 menu description 11-11UPLOAD/DOWNLOAD Data menu 11-12Upload/download menu Display unit, rear viewConnection of GP-1850WDF/GP-1850WF to PC 11-13Waypoint data format Character available for commentRoute data format 11-14Route comment format End of sentenceInserting Chart Card Using C-MAP NT ModelLocation of chart card slot cover 12-112-2 Cursor and Data DisplayObjects window Example of caution area window12-3 Tidal Information12-4 Date windowSET GO to Method window 12-5 Select Port Service windowSample filling station locations Make route windowLighthouse appearance when sector info is off Setting Chart Setup Options12-6 Sector infoDepth info display 12-7Displaying Program Number 12-8Memory, I/O test results Maintenance Maintenance & TroubleshootingRecommended maintenance program 13-1Simple Troubleshooting Replacement of Fuse, BatterySimple troubleshooting plotter 13-2Simple troubleshooting sounder Error MessagesError messages 13-313-4 Diagnostic TestsMemory, I/O port test Test menuKeyboard test 13-5Display test Keyboard testRemote controller test Remote controller testClearing Memories 13-6Menu Tree Default settings shown in bold italicMenu Tree 2 By soft key Next GRI Loran C ChainsChain Location Code Decca ChainsWorld Time OLD HAWAIIAN-OA Geodetic Chart ListThis page is intentionally left blank General Coating Color Index-1 IndexIndications Index-2Index-3 Index-4