AE–1800 Instruction Manual
Basic Operating Procedure
3. Basic Operat ing Procedure
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3 . 7 . St o p p i n g A u d i b l e a n d Vi s u a l A l a r m
Your equipment will warn you audibly and visually upon reception of a vital NAVTEX
message (type–D message), such as SAR information, piracy, or armed robbery warning.
An example type–D alarm message is given below, showing the visual alarm ( called the
alarm tag) attached to the message ID. The ID and text are also displayed in red to
indicate that the message below is a type–D alarm message, distinguishable from other
alarm messages (type–A: navigational, type–B: weather, or type–L: other alarm).
Figure 3-8 Visual Alarm Indication for Type–D Message – Example
To silence the audible alarm, simply press
.
If another D type message was received before the
current one, its audible alarm will also be stopped.
Pressing the key again will turn off the visual alarm indication (
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A L A R M !
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i
, alarm
tag), resetting the alarm.
A type–D message will remain fixed and will not automatically scroll until it is
acknowledged or until another D message is received on either receiver.
NOTE: Each alarm can be acknowledged and reset individually with the appropriate
software command via the RS–422 port. See paragraph 7.4.5 for details.
If additional alarm messages are left
unread in memory, that condition will be
indicated as in the example above.
Pressing
again will recall the next
unread alarm message onto the screen.
Figure 3-9 Visual Alarm Indication for Type–A
Message – Example
The equipment can also be
set to alert you to a
navigational warning (
type–A
message
), a weather warning
(
type–B message
)
or other
warning (t
ype–L message
) via
the menu system described
in paragraph 4.14.
(
continued on next page
)
Silencing the audible alarm
constitutes your acknowledgement
of the current alarm message
.
<
CAUTION
>
Visual alarm indication ( alarm tag)
This can be turned off with second
pressing of
.
JD36
II
A L A R M !
i i
210500 UTC JUN 07
SEARCH
AND RESCUE OPERATION
UNDERWAY FOR
A PASSENGER WHO WENT OVERBOARD
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NNNN
STORED (CER=00%)
M O R E U N R E AD AL AR M M S G L E F T !
This message indicates
more alarm messages are
left unread in memory
Message ID and text are
shown in red also as visual
alarm.
K A 8 8
II
A L A R M !
I I
270520 UTC JUN 07
BOMBING EXERCISE WILL BE CONDUCTED DAILY IN
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Message ID alone is shown in red.