BS EN 62287-2:2013 - Page 3

Maritime navigation and radiocommunication equipment and systems. Class B shipborne equipment of the automatic identification system (AIS). Self-organising time division multiple access (SOTDMA) techniques | Status: Current, Superseded, Under review

1 Scope This part of IEC 62287 specifies operational and performance requirements, methods of testing and required test results for Class B “SO” shipborne AIS equipment using Self-organised TDMA (SOTDMA) techniques as described in Recommendation ITU-R M.1371. This standard takes into account other associated IEC International Standards and existing national standards, as applicable. The main differences between Class B “CS” (IEC 62287‑1) and Class B “SO” units are that the Class B “SO”:

• • covers all 25 kHz channels listed in Recommendation ITU-R M.1084-5;
• • only uses the internal GNSS, no position sensor input is allowed;
• • requires use of VDL Message 17 for correction of the internal GNSS;
• • has a presentation interface;
• • has additional reporting intervals, down to 5 s;
• • has two power settings, with a high level of 5 W;
• • has the capability to transmit binary messages.

It is applicable for AIS equipment used on craft that are not covered by a mandatory carriage requirement of AIS under SOLAS Chapter V.