Samyung ENC SI-30A, Инструкция по эксплуатации

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External SOG/COG in use
Internal SOG/COG in use
These messages indicate whether Speed over Ground and Course over Ground are being
supplied by the external sensors or are being calculated from the internal GNSS module.
Heading valid
This message is received when a valid heading is first received from the ship's sensors.
Rate of Turn indicator in use
Other ROT source in use
The first of these messages indicates that the SI-30A transponder is using Rate of Turn
information from an on-board device which directly calculates the rate of turn - such as a
gyro compass. The second message indicates that the rate of turn is being calculated from
changes in the ship's heading.
Chan management params changed
This message is issued each time that any of the channel management parameters are
altered. These may be altered by the receipt of specific VHF or DSC messages from base
stations and can also be modified directly by using the "Channel Regions" page on the SI-
30A's display unit.