Furuno FR-8051 Setting a Guard Alarm Zone, Selecting guard zone type, Activating the guard zones

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1.28Setting a Guard Alarm Zone

The guard allows the operator to set the desired range and bearing for a guard zone. When ships, islands, landmasses, etc. violate the guard zone an aural alarm sounds and the offending target blinks to call the operator’s attention. Two areas can be set, zone 1 (short dashed line) and zone 2 (long dashed line), and one may be active.

1)Press the MENU key.

2)Select the GUARD menu.

3)Press the ENTER/SELECT key.

4)Select MODE and press the ENTER/SELECT key.

5)Select IN (or OUT).

6)Press the ENTER/SELECT key.

7)Press the MENU key.

WARNING

•The alarm should not be relied upon as the sole means for detecting possible collision situations.

•A/C SEA, A/C RAIN and GAIN should be properly adjusted to be sure the alarm system does not overlook target echoes.

Selecting guard zone type

The guard alarm can be set to sound when a tar- get either enters (or exits) the guard zone. You can select which type of guard alarm you want to use through the GUARD menu. N-type: IN type alarm only.

In alarm: The alarm sounds on targets entering the guard zone. (IN) appears at the top right-hand corner when the In alarm is selected.

Out alarm: The alarm sounds on targets exiting the guard zone. (OUT) appears at the top right-hand corner when the Out alarm is selected.

Dashed line: no alarm

Guard zone

IN ALARM

OUT ALARM

Figure 1-24 In and out alarms

Activating the guard zones

Two guard zones may be set and one of them may be active. Select the guard zone to make active on the GUARD menu.

1)Press the MENU key.

2)Select the GUARD menu.

3)Press the ENTER/SELECT key.

4)Select AREA NO. and press the ENTER/SE- LECT key.

5)Select guard zone to make active; GUARD1 (or GUARD2).

6)Press the ENTER/SELECT key.

7)Press the MENU key.

Setting a guard zone

1)Referring to (1) in Figure 1-30, operate the trackball to place the cursor at point A or B.

2)Press the GUARD ALARM key. GUARD1 (or GUARD2) SET appears at the top right cor- ner on the display. See Figure 1-30 (2).

3)Operate the trackball to place the cursor at point C or D. See Figure 1-30 (3). GUARD1 (or GUARD2) IN (or OUT) appears.

4)Press the GUARD ALARM key.

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Contents Marine Radar First Edition NOV Safety Information Do not diassemble or modify the equipment Iii Radio Frequency Radation HazardUse the correct fuse Table of Contents Maintenance Foreword Features Word to FR-8051/8111/8251 OwnersVii Configuration of FR-8051/8111/8251 Antenna Unit SpecificationsTransceiver Module Display Unit Power Supply and Power ConsumptionEnvironmental Conditions OthersStandard Set Equipment ListsXii Name Type Qty RemarksSpare Parts Optional EquipmentXiii Name Type Code No RemarksXiv Categorization by SpecificationFunction Type Control Description Operation25 NM Display IndicationsDisplay indications lower part Selecting Range Turning the Radar On/OffTransmitting, Stand-by Selecting presentation mode Presentation ModePresentation mode Description Representative display Description Presentation modeBasic menu operation Menu OverviewChanging pages on the Initial menu MK Erase erase all fixed marks Menu treeInitial Tune SET AUTO, Manu SPD Mode MAN, LOG, NAV Adjusting Sensitivity Tuning the ReceiverAdjusting Picture Brilliance Selecting tuning modeAdjusting Range Ring Brilliance Adjusting Brilliance of Control Panel and MarkersSuppressing Sea Clutter Automatic anti-clutter controlHeading and North Markers Suppressing Rain ClutterMeasuring the Range Measuring range by the range ringsMeasuring Bearing Collision Assessment by Measuring Range Offset EBL Canceling the cursor offsetOff-centering the Picture Index LinesInscribing Marks on the Display ZoomFunction key Turning on a function Own Ship SpeedAutomatic speed input Interference Rejector Ship’s GraphicEcho Trails Manual speed inputStarting echo trail Canceling echo trailTrail time Trail referenceTrail brilliance Electronic Plotting E-plotPlotting a target Target data Canceling target plottingTrue or relative vector Vector timeSetting a guard zone Setting a Guard Alarm ZoneSelecting guard zone type Activating the guard zonesSilencing the aural alarm Watch AlarmCanceling the guard zone and guard alarm How to turn on echo averaging26 Echo average Suppressing Second-Trace EchoesEcho Stretch Presetting pulselengthNoise Rejection Selecting PulselengthOutputting Cursor Position TLL data Waypoint DisplaySelecting pulselength set to use Selecting Unit of Range Measurement, Bearing Reference Alarm Output Signal On/OffSector Blanking Radar Observation Range ResolutionRadar Picture, Target Properties and Radar Pulse False Echoes Bearing ResolutionIndirect echoes Multiple echoesSide-lobe echoes Minimum and Maximum RangesMinimum range Blind and shadow sectorsLocating a Ship or Survival Craft in Distress by Sart Gain When Working on the Antenna Unit MaintenancePart Type Life expectancy Remarks Interval Check point Check and measures RemarksSimple Troubleshooting TroubleshootingProblem Remedy Serviceman qualification Advanced-level TroubleshootingProblem Check point and probable Remedy Cause Problem Check point and probable Remedy Cause Problem Check point and probable Remedy Cause Diagnostic test, test pattern Diagnostic TestAntenna Unit Location of PartsModulator Trigger RF Transceiver UnitRF transceiver unit FR-8051/8111 Display unit, top view Display Unit common to all modelsDisplay unit, right side view Operating a performance monitor Performance MonitorTransmitter Receiver Performance Display Meaning Transmitter normal Receiver normalVideo Plotter RP-15 Auto Plotter ARP-15Fluxgate Heading Sensor C-2000 Page