Furuno 841 MARK-2 manual Window Display, Selecting the Presentation Mode, CU course-up

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2.14 The Window Display

Area selector (1/4 or 1/3 of range)

The window display appears at the bottom right (or left) 1/4 of the display. Two types of window displays are available: zoom and wide. Zoom doubles the size of the area se- lected by the operator, and wide (range-up) compresses and displays the entire radar pic- ture on the next higher range.

Note: The zoom display does not function on the 0.125 and 0.25 nm ranges.

Window display area

VRM

EBL

+CURSOR

**.** NM

***.*°R

***.**NM ***.*° R

(1)Press [DISP MODE] to select the window display.

VRM

EBL

+CURSOR

**.** NM

***.*°R

***.**NM ***.*° R

(2)Press cursor keys to select area to zoom and press [ENT].

Selecting the type of window display

1)Press the [MENU] key.

2)Select Mode & Function and press the [ENT] key.

Note: When you place the circle cursor behind the window display, the window display shifts left (or right) so you may view the circle cursor.

3)Select Window Display to Zoom or Wide (range-up).

4)Press the [ENT] key followed by the [MENU] key.

Selecting the area for the zoom picture

1)Press the [DISP MODE] key to select the window display. The area selector is a solid circle.

2)Press the cursor pad to place the circle cursor (area selector) on the area to zoom.

3)Press the [ENT] key. The area selector becomes a dashed circle and the cursor can be moved indepedently.

To reselect area to zoom, press [ENT] or [DISP MODE] and follow steps 2 and 3.

Figure 2-12 How to select

the area to zoom

2.15Selecting the Presentation Mode

This radar provides four presentation modes: head-up, course-up (course-up or waypoint- up; selectable on menu), north-up and true motion. Press the [DISP MODE] and [HM OFF] keys together to select a presentation mode. Each time the keys are pressed, if heading signal is input to the radar, the pre- sentation mode and mode indication change in the sequence of HU, CU (or WU), NU, TM. If there is no heading signal input to the radar, the presentation mode is always HU.

 

 

CU

 

 

 

 

 

 

 

(couse-up)

 

NU

 

 

TM

HU

 

WU

 

 

 

(north-up)

(true motion)

(head-up)

(waypoint-up)

 

 

 

 

 

 

 

Selecting course-up mode for CU or

WPT-UP

In course-up, you may select CU or WPT- UP, on the menu.

CU (course-up)

An azimuth stabilized display in which the line connecting the center with the top of the display indicates own ship’s intended course.

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Contents Marine Radar B . N o . O M E 3 4 4 4 Safety Instructions Do not open the equipment Stay away from transmitting antennaDo not disassemble or modify the equipment Do not operate the equipment with wet handsIii Use the correct fuseTable of Contents Features ForewordSpecifications Antenna UnitTransceiver Module contained in radome Display UnitInterface Nmea Installation Materials CP03-15xx Accessories FP03-05900Equipment List Complete SetOptional Equipment Configuration Model 841 MARK-2Principle of Operation How radar works Operation Control DescriptionDisplay Indications and Markers Turning the Radar On and Off5NM 675NM 220.9R 0.646NM 308.7RAdjusting LCD Backlighting and Display Tone Adjusting Control Panel BrillianceTransmitting Selecting the RangeAdjusting GAIN, STC, A/C Rain and FTC General procedureSTC MAN Auto Tuning the Receiver Adjusting A/C RainAdjusting FTC How to tune manuallyMeasuring the Range Measuring the Bearing Menu Operation Press the Menu key to open the menu. The main menu appears See the table on the next Menu description Menu FunctionSelecting the Display Mode 11 Display modesSelecting the Presentation Mode Window DisplayCourse-up, you may select CU or WPT- UP, on the menu CU course-upGuard Alarm Setting the guard zoneSilencing the audible alarm WPT-UP waypoint-upCanceling the guard zone Suppressing Radar InterferenceSuppressing Noise Interference Off Centering the DisplaySelecting Pulselength Echo Trails Navigation Data DisplaySetting up the nav data display Echo Stretch magnifying long range echoesPress the Menu key Select Nav Data and press the ENT key Turning echo stretch on or offSelecting Unit of Measurement for Range Selecting Bearing ReferenceWatchman Turning on watchmanCanceling watchman Erasing the Heading MarkerDeselecting Ranges Displaying Navigation Data During Stand-byVisual Alarm Indications Error Visual alarmOutputting Cursor Position to Navigator Displaying Cursor Position, Range and Bearing to CursorInterpreting the Display Radar Wave and Radar HorizonTarget Properties and Radar Wave Reflection Super-refractionBearing Resolution Range ResolutionFalse Echoes Multiple echoesSide-lobe echoes Indirect echoesNautical Chart and Radar Picture Maintenance & Troubleshooting Safety InformationPreventative Maintenance Replacing the FusePeriod Check point Remarks Troubleshooting But ThenSelf Test Self TestAntenna Unit Installation Siting, handling considerationsMounting Holes for antenna unit Parallel with the fore and aft lineDisplay Unit Installation Mounting considerationsMounting procedure Display unit is designed to be mounted on a tabletopSignal cable connection ConnectionsTo connect external equipment to the OP- Tion connector For E/SNavigation aid, video sounder connection Heading Sensor ConnectionInstallation Check List RadarInitial Adjustment of Picture Displaying the Installation MenusFollow the procedure below to obtain proper radar picture Entering Initial Settings Relative Bearing AlignmentSweep Timing Closing the Installation Menus Press the Menu key and turn off the powerPage Page Page Page Page Page