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5.4
IS OPERATION
5
5.4.1 Initial Setting
This section explains the initial setting for using the AIS function.
Setting the GPS antenna location
Set the GPS antenna location. Set offset ranges in longitudinal direction and latitudinal direction from the
own ship's reference position.
For the setting procedure, refer to Section 8.5 ADJUSTMENT.
Setting collision decision criteria (CPA Limit/TCPA Limit)
The collision decision criteria for the ATA/ARPA function are applied to the AIS function.
For the setting procedure, refer to Section 5.1.3 Setting Collision Decision Criteria.
The AIS setting menu is also available for the collision decision criteria. Note that the same collision decision
criteria must apply to ATA and ARPA.
l If offset ranges are not set correctly, AIS symbols and
radar echoes may be displayed shifted.
l When offset ranges are set, latitude and longitude
data received from the GPS is offset, and the offset
data is displayed as the latitude and longitude of own
ship’s position.
Attention
l Set the optimum values of collision decision
conditions, depending upon vessel type, water area,
weather, and oceanographic conditions.
Attention
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