Konsberg AIS 200, Руководство по установке

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Kongsberg AIS 200 Installation Manual, rev. 2 Appendix B - Digital interface IEC 61162-1
NOTE 1 The length of an ITU-R M.1371 message may be long and may require the use of
multiple sentences. The first field specifies the total number of sentences used for
a message, minimum value 1. The second field identifies the order of this
sentence in the message, minimum value 1. These cannot be null fields.
NOTE 2 The Sequential message identifier provides a message identification number from
0 to 9 that is sequentially assigned and is incremented for each new multi-
sentence message. The count resets to 0 after 9 is used. For a message requiring
multiple sentences, each sentence of the message contains the same sequential
message identification number. It is used to identify the sentences containing
portions of the same message. This allows for the possibility that other sentences
might be interleaved with the message sentences that, taken collectively, contain a
single message. This field shall be a null field when messages fit into one
sentence.
The AIS message reception channel is indicated as either "A" or "B." This
channel indication is relative to the operating conditions of the AIS when the
packet is received. This field shall be null when the channel identification is not
provid NOTE 3
ed. The VHF channel numbers for channels "A" and "B" are obtained by
using an ACA-sentence "query" of the AIS.
NOTE 4
ultiple sentences, and 63 valid
characters for a message using a single sentence.
NOTE 5
ll be set to zero when
no "fill bits" have been added. This cannot be a null field.
10.3.13 VDO – VHF Data-link Own-vessel message
s
rmatter.
The maximum string length of encapsulation is limited such that the total number
of sentence characters does not exceed 82. This field supports a maximum of 62
valid characters for a message transferred using m
To encapsulate, the number of binary bits must be a multiple of six. If it is not,
one to five "fill bits" are added. This parameter indicates the number of bits that
were added to the last 6-bit coded character. This value sha
This sentence is used to provide the information assembled for broadcast by the AIS. It use
the six-bit field type for encapsulation. The sentence uses the same structure as the VDM
sentence fo
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