Furuno ARP-17 manual Changing plot symbol shape, Automatic acquisition

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PLOT SYMBOLS

R1

1

Reference Immediately

Target After (Received Acquisition reliable

referencing)

1

1

20 scans

60 scans after

after

acquisition

acquisition

(Steady tracking)

1

1

Target which Target on

is being

collision course

plotted

(CPA/TCPA)

1

1

Lost Target

Target in GZ

Figure 5 Plot symbols

CAUTION

TARGET SWAP

When a tracked target near another tracked target, the targets may be "swapped." When two targets come close to each other, one of the two can become a "lost target." Should this happen, reacquisition of the "lost target" is required after the two targets have separated.

A

B

AB

Sector

0.5nm

Figure 6 Automatic acquisition area

Note: If you wish to create an auto acquisi- tion area having a 360 degree coverage around own ship, set point B in almost the same direction (approx. ± 5° ) as point A and press the [ENTER/SELECT] key.

Changing plot symbol shape

The plot symbol for a target may be changed after acquiring the target, on the R-type ra- dar only.

1.Place the cursor on the plot symbol mark you wish to change.

2.Press the [ENTER/SELECT] key succes- sively while pressing and holding down the [HL OFF] control to select plot sym- bol mark desired.

Automatic acquisition

1.Press [MENU], [7], [7] to display PLOT MENU 1.

2.Press the [0] key twice.

3.Press the [2] key to select SET from the AUTO ACQ field.

4.Press the [ENTER/SELECT] key.

5.Place the cursor at upper (lower) left edge of area and press the [ENTER/SELECT] key.

6.Place the cursor at the lower (upper) right edge of the area and press the [ENTER/ SELECT] key.

Plot symbols

Note: Changing the plot symbol mark while a target is under acquisition (target marked with dashed square) will cause all plot symbol marks above to be shown with dashed lines.

3.To inscribe a smaller plot symbol mark, place the cursor on any plot symbol, then press the [ENTER/SELECT] key. Mark size can be alternately selected to large or small by repeating this step.

7

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Contents Automatic Tracking AID B . N o . O M E 3 0 4 6 Safety Instructions Table of Contents Features ForewordWord to Furuno ARP-17 Owners Operational Overview IntroductionCriteria of Tracking Acquisition and trackingQualitative description of tracking error Automatic acquisition areas and suppression linesOwn ship maneuvers Other ship maneuversControls, Menu Description ControlsMenu tree Menu descriptionActivating, Deactivating the ATA Entering Own Ship’s SpeedAutomatic speed input Acquiring Targets Manual speed inputTarget-based speed input Manual acquisitionChanging plot symbol shape Automatic acquisitionTerminating Tracking of Targets VectorsDisplaying Target Data Past Position Display Set and DriftDisplaying data Selecting plotting intervalAlarms CPA/TCPA alarmSilencing CPA/TCPA audible alarm Lost target alarmGuard zone alarm Track Test Simulation DisplayDiagnostic Sequence CPA TcpaOutputting Target Data Specifications of Auto Plotter Index