Seatex AIS 100 Instruction Manual, rev. 5
External interfaces
56
NOTE 4
Value of 0, bandwidth is specified by channel number, see ITU-R
M.1084, Annex 4
Value of 1, bandwidth is 12,5 kHz.
NOTE 5
Value of 0, transmit on channels A and B, receive on channels A and B
Value of 1, transmit on channel A, receive on channels A and B
Value of 2, transmit on channel B, receive on channels A and B
Value of 3, do not transmit, receive on channels A and B
Value of 4, do not transmit, receive on channel A
Value of 5, do not transmit, receive on channel B
NOTE 6
Value of 0, high power
Value of 1, low power
NOTE 7
Source identifiers:
A, ITU-R M.1371 message 22: Channel Management addressed
message,
B, ITU-R M.1371 message 22: Channel Management broadcast
geographical area message,
C, IEC 61162-1 AIS Channel Assignment sentence,
D, DSC Channel 70 telecommand, and
M, operator manual input.
This field should be null when the sentence is sent to an AIS.
NOTE 8
This value is set to indicate that the other parameters in the sentence
are "in-use" by an AIS unit at the time that the AIS unit sends this
sentence. A value of "0" indicates that the parameters are not "in-use,"
and a value of "1" indicates that the parameters are "in-use." This field
should be null when the sentence is sent to an AIS.
NOTE 9
This is the UTC time that the "in-use" flag changed to the indicated
state. This field should be null when the sentence is sent to an AIS.
AIR – AIS interrogation request
This sentence supports ITU-R M.1371 message 15. It provides an
external application with the means to initiate a request for specific
ITU-R M.1371 messages from distant mobile or base AIS stations. A
single sentence can be used to request, as many as, two messages from
one AIS unit and one message from a second AIS unit. The message
types that can be requested are limited. The complete list of messages
that can be requested can be found within the message 15 description
in ITU-R M.1371. Improper requests may be ignored.
The external application initiates the interrogation. The external
application is responsible for assessing the success or failure of the
interrogation. After receiving this sentence, the AIS initiates a radio
broadcast (on the VHF Data Link) of a message 15 – Interrogation.
The success or failure of the interrogation broadcast is determined by
Summary of Contents for Seatex AIS 100
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Page 104: ...Seatex AIS 100 Instruction Manual rev 5 Troubleshooting 96 Blank page...
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Page 110: ...Seatex AIS 100 Instruction Manual rev 5 Appendix B Declaration of conformity 102 Blank page...
