Furuno INMARSAT-C MOBILE EARTH STATION FELCOM 12 - Manual (Page 45)

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12. Select “Normal Mode” or “Reverse Mode”.
Normal Mode displays black characters on white
backgrund.
Reverse Mode displays white characters on black
backgrund.
13. Press [Enter] to close the selection window.
14 Press [Esc] to return to the standby display.
Login and Logout
Each time the DTE and communication unit are turned on register
your vessel with the Inmarsat C system, to enable communications
between your vessel and LES. This is called login. The first time you
login you must do it manually; thereafter the NCS does it for you
automatically, even when you move to another ocean region.
Note that the distress alert can be transmitted and EGC messages
received regardless of whether you are logged in or not.
If you will not be using the FELCOM 12 for a prolonged period
you should logout from the Inmarsat C system, before turning
off the power to the communication unit. The Inmarsat C system
will then register you as inactive, notifying anyone trying to call you
that you are currently unavailable. If you do not log out before turn-
ing off the power, the LES may attempt to send a message to you. It
may charge your correspondent, even if you never receive the
message.
Note: The communication unit should be idle (“Current State: IDLE”
appears at the bottom of the screen) to login and logout.
Note: When the FFA version is active, vessel is automatically logged
in when the power is turned on.