Operation Manual

52 Issue 1 M-2 AIS Operation
in which AIS transmissions are disabled, the message "Own reports disabled" is
displayed as a reminder that no AIS information is being transmitted. When the
vessel moves out of that channel region (or the transmission mode with in that
region is updated) the message "Own reports enabled" is displayed as a
reminder that normal operation has been restored.
Area setting uses invalid mode (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region which has value for the 'mode' field
which is greater than 5 (the maximum permitted by IEC 61162-1).
Area setting uses unsupported mode (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region which has value for the 'mode' field of
either 3 or 4, as these modes are not supported by this transponder.
Area is too small (Information 67)
Area is too large (Information 67)
One of these two messages will be output by the transponder when an attempt
is made to configure a channel management region which has at least one side
which is shorter than 20 nm longer than 200 nm.
Transition zone is too large (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region which has a transition zone size of
more then 5 nm .
Area setting has corner conflict (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region of which one corner lies to close to the
corners of existing regions. It is not permissable to have more than two regions
sharing a common corner, or for three or more reigons to have corners within
8nm or each other.
Area overruled by prior command (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region which overlaps with a region which has
been set by either DSC tele-comand or by a VHF message within the last two
hours. Regions received by these means cannot be changed by manual editing
until at least two hours after they have been received.
Area setting uses invalid channels (Information 67)
This message is output by the transponder when an attempt is made to
configure a channel management region in which either (or both) of the
specified AIS channels are not valid channel num bers as defined in ITU-T
M.1084 Annex 4.