Installation Manual

89-041 Section 5 Issue 5 S5-7
ACA - MS Regional Channel Assignment Message
The zone created of this sentence must be accepted by the channel management rules (size of zone, distance to
own position, valid channel number etc). If the zone isn’t accepted, the zone will be ignored
Field Comment
Sequence Number Ignored
NE Latitude (2 fields) Used
NE Longitude (2 fIelds) Used
SW Latitude (2 fields) Used
SW Longitude (2 fields) Used
Transitional Zone Size Used
Channel A Used
Channel A Bandwidth Used
Channel B Used
Channel B Bandwidth Used
Tx/Rx Mode Used
Power Level Used
In Use Flag Ignored
Time of In Use Change Ignored
ACK - Acknowledge Alarm
Field Comment
ID of the alarm source Used
AIQ - Query Sentence
Field Comment
Approved sentence formatter of data being
requested
It’s possible to query the following sentences:
ACA, SSD, VSD,HRST
AIR - AIS Interrogation Request
This sentence may be used to perform a “UTC Request”. It is always sent on both Channel A and Channel B, for the
reason that this is a multiple addressed sentence.
Field Comment
MMSI 1 Used, may be NULL
Message Id 1.1 Used, may be NULL
Message Sub Section ignored
Message Id 1.2 Used, may be NULL
Message Sub Section Ignored
MMSI 2 Used, may be NULL
Message Id 2.1 Used, may be NULL
Message Sub Section ignored