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4. AIS OPERATION
4-2
There can be several hundreds or several thousands of AIS targets, and of those only
a few will be significant for your ship. To remove unnecessary AIS targets from the ra-
dar display, the feature "active and sleeping AIS targets" is available. Initially any new
AIS target received by an AIS transponder is not active (="sleeping"). Such sleeping
targets are shown with a small triangle. The operator can pick any AIS target and
change it from sleeping to active. Active AIS targets are shown with a large triangle
with speed vector, headline, ROT indicator, etc. Further, the operator can pick active
AIS targets and change their status to sleeping.
An indication of AIS target activated capacity limit is given well before it is reached.
When 95% of 500 targets are activated, the Alert 534 "AIS Target Activate 95%" ap-
pears. When 500 targets are activated, the Alert 535 "AIS Target Activate 100%" ap-
pears.
An indication of AIS target display capacity limit is given well before it is reached.
When 95% of 1,000 targets are displayed, the Alert 530 "AIS Target Display 95%" ap-
pears. When 1,000 targets are displayed, the Alert 531 "AIS Target Display 100%" ap-
pears.
An indication of AIS target processing capacity limit is given well before it is reached.
The Alert 532 "AIS Target Capacity 95%" will be given when 95% of 2,000 targets are
in the storage buffer and the Alert 533 "AIS Target Capacity 100%" appears when
2,000 targets are in the storage buffer.
This radar generates AIS-related alerts. These are Alert 536 "AIS CPA/TCPA" and
Alert 537 "AIS Lost". Only active AIS targets generate alerts. The operator can acti-
vate or sleep AIS target alerts as desired. The feature "active and sleeping AIS tar-
gets" is very effective for focusing on only those AIS targets that need supervision.
This radar further eases the task of the operator by automatically changing non-active
targets to active targets, if their CPA and TCPA are within a preset limit.
4.1 How to Deactivate the AIS Function
Long-click the AIS status indication at the bottom-right position to display [FUNC OFF]
to deactivate the AIS function (sleep all AIS targets) and AIS messaging facility. To
activate AIS, push the left button again.
Note: You cannot enable AIS if any of the items listed below are active.
• Manual speed
• Manual set & drift
• Speed is calculated from reference targets