Furuno 841 MARK-2 manual Operation, Control Description

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2. OPERATION

2.1 Control Description

Cursor pad

Shift cursor, VRM and EBL; select items and options on menu.

Registers selection	ENT	MENU	Opens/closes menus.
on menus.

Press to adjust gain,	ECHO	HM
Press to adjust gain,	ECHO	OFF
A/C RAIN, STC		OFF
A/C RAIN, STC
and FTC.
		RANGE

Erases heading marker;

selects cursor data (Lat/Long, R/B); outputs cursor position.

Selects radar range.

Adjusts display	TONE	BRILL	Adjusts display brilliance.
tone.
Turns the EBL	EBL	VRM	Turns the VRM on/off.
on/off.
Plots targets' trails.	TRAIL	RINGS	Turns the range
			rings on/off.
Sets guard	GUARD	OFF	Off centers
	GUARD	CENTER
		CENTER
zone area.			the display.
Selects display mode;	DISP	ST-BY	Sets radar in stand-by;
Selects display mode;	MODE	ST-BY	Sets radar in stand-by;
erases heading error	MODE	TX	transmits radar pulse.
erases heading error			transmits radar pulse.
indication.
		POWER	Turns power on/off.

Figure 2-1 Control panel

Image 15

Contents Marine Radar B . N o . O M E 3 4 4 4 Safety Instructions Do not operate the equipment with wet hands Do not open the equipmentStay away from transmitting antenna Do not disassemble or modify the equipmentUse the correct fuse IiiTable of Contents Foreword FeaturesDisplay Unit SpecificationsAntenna Unit Transceiver Module contained in radomeInterface Nmea Complete Set Installation Materials CP03-15xxAccessories FP03-05900 Equipment ListOptional Equipment Model 841 MARK-2 ConfigurationPrinciple of Operation How radar works Control Description Operation675NM 220.9R 0.646NM 308.7R Display Indications and MarkersTurning the Radar On and Off 5NMSelecting the Range Adjusting LCD Backlighting and Display ToneAdjusting Control Panel Brilliance TransmittingAdjusting GAIN, STC, A/C Rain and FTC General procedureSTC MAN Auto How to tune manually Tuning the ReceiverAdjusting A/C Rain Adjusting FTCMeasuring the Bearing Measuring the RangeMenu Operation Press the Menu key to open the menu. The main menu appearsSee the table on the next Menu Function Menu description11 Display modes Selecting the Display ModeCU course-up Selecting the Presentation ModeWindow Display Course-up, you may select CU or WPT- UP, on the menuWPT-UP waypoint-up Guard AlarmSetting the guard zone Silencing the audible alarmSuppressing Radar Interference Canceling the guard zoneSuppressing Noise Interference Off Centering the DisplaySelecting Pulselength Navigation Data Display Echo TrailsTurning echo stretch on or off Setting up the nav data displayEcho Stretch magnifying long range echoes Press the Menu key Select Nav Data and press the ENT keyTurning on watchman Selecting Unit of Measurement for RangeSelecting Bearing Reference WatchmanDisplaying Navigation Data During Stand-by Canceling watchmanErasing the Heading Marker Deselecting RangesDisplaying Cursor Position, Range and Bearing to Cursor Visual Alarm IndicationsError Visual alarm Outputting Cursor Position to NavigatorSuper-refraction Interpreting the DisplayRadar Wave and Radar Horizon Target Properties and Radar Wave ReflectionMultiple echoes Bearing ResolutionRange Resolution False EchoesIndirect echoes Side-lobe echoesNautical Chart and Radar Picture Safety Information Maintenance & TroubleshootingPreventative Maintenance Replacing the FusePeriod Check point Remarks But Then TroubleshootingSelf Test Self TestAntenna Unit Installation Siting, handling considerationsMounting Parallel with the fore and aft line Holes for antenna unitMounting considerations Display Unit InstallationDisplay unit is designed to be mounted on a tabletop Mounting procedureConnections Signal cable connectionHeading Sensor Connection To connect external equipment to the OP- Tion connectorFor E/S Navigation aid, video sounder connectionRadar Installation Check ListInitial Adjustment of Picture Displaying the Installation MenusFollow the procedure below to obtain proper radar picture Entering Initial Settings Relative Bearing AlignmentSweep Timing Press the Menu key and turn off the power Closing the Installation MenusPage Page Page Page Page Page

2. OPERATION

2.1 Control Description

A/C RAIN, STC

Figure 2-1 Control panel