scope:

This part of International Standard IEC 62287 specifies operational & 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.1084-4; - only uses the internal GNSS, no position sensor input is allowed; - uses 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; - has the capability to transmit the long-range broadcast message. It is applicable for AIS equipment used on craft that are not covered by a mandatory carriage requirement of AIS under SOLAS Chapter V.