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Message index display
The
Message index
display shows the identifiers of messages from a specific
receiver. Unread messages have an “envelope” (
) mark; locked messages (see Full
message display) have a “key” (
) mark.
Message identifiers can be expanded to show either the first two lines or the full
message by selecting the desired message and pushing the appropriate softkey.
Messages from another receiver can be displayed using the
View
softkey, which
cycles through the available sources.
Messages are grouped by time interval. The
Show
softkey cycles through the set
intervals.
Message summary display
The
Message summary
display shows the first two lines of each message, selected
by various criteria.
Selection criteria are time, station identity and message type. The
Sort by
softkey
cycles through these criteria.
Depending on the selection, the “group” is a 4-hour period, a station or a message
type.
The
Show
softkey controls the total number of messages displayed by suppressing
messages which are older than the selected time frame.
A message can be shown in full by selecting it and pushing the
View
softkey.
Full message display
Because messages are automatically erased 72 hours after they are received, it is
necessary to take action to retain an important message beyond this time. Displaying
the message and pressing the
Lock
softkey causes the message to be retained
indefinitely. A locked message is identified by a “key” (
) mark in the
Index
display.
A locked message is unlocked by displaying it (in this view) and pressing the
Unlock
softkey.
Up to 250 messages can be saved for long term retention; once the limit has been
reached, operating the
Lock
softkey will not lock any more messages until some are
unlocked again.
Minimising the number of messages displayed
After the SMARTFIND GMDSS NAVTEX has been switched on for a while there will
be a large number of NAVTEX messages stored in memory. These can be quite
overwhelming if the user is looking for particular message categories or an individual
message.
Several design features have been incorporated into the SMARTFIND GMDSS
NAVTEX to make day to day operation easier:
Separate frequency channel pages
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Station filtering
Message category filtering
Time-limited display of messages
Separate frequency channel pages
A separate NAVTEX message display is provided for each of the 3 receiver channels.
All 518 kHz messages appear together, all 490 kHz messages appear together and
all 4209.5 kHz messages appear together. Switch between these displays by using
the
View
softkey.
Station filtering
NAVTEX transmitting stations that are not required can be de-selected by making the
appropriate selections in the Setup screens.
Message category filtering
NAVTEX message categories that are not required can be de-selected by making the
appropriate selections in the Setup screens.
Time-limited display of messages
In order to access recent messages quickly the
Show
softkey can be used to show
only NAVTEX messages that have been received in the selected time period (last
4 hours, last 12 hours etc)
SETUP MODE
To enter Setup mode, press and hold the ENTER key for 3 seconds.
All of the user-editable setup parameters are stored in non-volatile memory and will
be unchanged after a power cycle, unless otherwise stated in the descriptions of each
individual page.
To exit from Setup mode and return to normal operating mode, press and hold the
ENTER key for 3 seconds until the display returns to normal operating mode, or press
the top softkey to select the next main page.
Note that message pop-ups do not appear while in Setup mode to ensure they do not
interrupt the editing of a configuration field. Always exit from Setup mode when you
have finished configuring the SMARTFIND GMDSS NAVTEX and return to normal
mode before leaving the SMARTFIND GMDSS NAVTEX unattended.
