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5. AIS Operation
5-15
5.11 Lost AIS Targets
A target is declared a lost target when it fails to produce data for six minutes or five reporting
intervals, whichever is the shorter. When this occurs, the target is marked with the (flashing)
lost target symbol and the indication "AIS lost target" appears.
To acknowledge a lost target, push the
ALARM ACK key
or use the trackball to select the
ALARM ACK box then push the left button.
Time out for indication of lost active AIS target is as shown in the table below:
Vessel speed (kt)
Period for time out
at anchor
18 min
0-14 60
sec
14-23 36
sec
> 23
12 sec
Automatic removal of lost active AIS target occurs under the following conditions:
•
When user acknowledge "Lost AIS target" alert for active AIS target.
•
When "Lost AIS target" state has occurred for two minutes.
Exception is moored/anchored active AIS target when time of period is 36 minutes.
Note 1:
If a TT lost target mark is displayed when the
ALARM ACK key
is pushed (or the ALARM ACK box is
clicked) to acknowledge an AIS lost target, the TT lost target will also be erased.
Note 2:
The AIS data transmission interval depends on target’s speed. For example, the data is transmitted every 10
seconds on the ship speed of 0 to 14 kt and every two seconds on the ship speed of more than 23 knots. For details,
see the owner’s manual of the AIS.
5.11.1 Enabling, disabling audio alarm for lost target
1. Put the cursor on the text "Lost target alarm" then left-click to select desired option (OFF, FILT, ALL).
2. For FILT, you can set additional conditions for lost AIS target and tracked target. Put the cursor on the text "Lost
target alarm." then right-click to open the CPA auto activate dialog box. Set desired additional conditions for
lost AIS target in the AIS field (Max range, Min. ship speed, Exclude class B, and Min. ship length).
SINGLE
AUTO
MAN
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Содержание FCR-2107 series
Страница 42: ...1 Operational Overview 1 20 This page intentionally left blank...
Страница 73: ...2 Radar Operation 2 31 ROUGH SEA SHIP HARBOR COAST Picture setup options and default settings con t...
Страница 154: ...5 AIS Operation 5 28 This page intentionally left blank...
Страница 253: ...7 Vector Chart Material 7 81 More information is available in text More information is available as a picture...
Страница 255: ...7 Vector Chart Material 7 83 Recommended track defined by two beacons...
Страница 256: ...7 Vector Chart Material 7 84 Recommended track defined by a building and a beacon...
Страница 257: ...7 Vector Chart Material 7 85 Measurement mile tails tails...
Страница 279: ...8 Manual Updates 8 19 12 10 11 9 13 7 8 Set positions with cursor and push left mouse button Click Accept button...
Страница 298: ...9 Chart Alerts 9 14 This page intentionally left blank...
Страница 322: ...10 Route Planning 10 24 This page intentionally left blank...
Страница 368: ...14 Backup Operations 14 6 This page intentionally left blank...
Страница 404: ...16 Recording Functions 16 16 This page intentionally left blank...
Страница 406: ...17 NAVTEX Messages 17 2 This page intentionally left blank...
Страница 416: ...19 Parameters Setup 19 8 This page intentionally left blank...
Страница 456: ...Appendix 2 IHO ECDIS Chart 1 AP 4 Information about the chart display 1 Information about the chart display 2...
Страница 457: ...Appendix 2 IHO ECDIS Chart 1 AP 5 Nature and Man made features Port features...
Страница 458: ...Appendix 2 IHO ECDIS Chart 1 AP 6 Depths Currents etc Seabed Obstructions Pipelines etc...
Страница 459: ...Appendix 2 IHO ECDIS Chart 1 AP 7 Traffic routes Special areas...
Страница 460: ...Appendix 2 IHO ECDIS Chart 1 AP 8 Aids and Services Buoys and Beacons...
Страница 461: ...Appendix 2 IHO ECDIS Chart 1 AP 9 Topmarks Color test diagram...
Страница 462: ...Appendix 2 IHO ECDIS Chart 1 AP 10 Mariners navigational symbols...
Страница 464: ...Appendix 3 Interpreting S57 Charts AP 12 Plain or symbolized boundaries Limited or full light sectors...
Страница 467: ...Appendix 3 Interpreting S57 Charts AP 15 Land features Water and seabed features Traffic routes...
Страница 468: ...Appendix 3 Interpreting S57 Charts AP 16 Cautionary areas Information areas Buoys and beacons Lights...
Страница 469: ...Appendix 3 Interpreting S57 Charts AP 17 Fog signals Radars Services...
Страница 472: ...Appendix 3 Interpreting S57 Charts AP 20 Low accuracy Services and small craft facilities Special areas...
Страница 474: ...Appendix 3 Interpreting S57 Charts AP 22 Light descriptions Nature of seabed Geographic names etc...
Страница 476: ...Appendix 3 Interpreting S57 Charts AP 24 This page intentionally left blank...
Страница 511: ...Appendix 5 Digital Interface AP 59 NRX NAVTEX received data...
Страница 544: ...Appendix 6 Parts List and Parts Location AP 92 This page intentionally left blank...
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